Crown IQ-P.I.P.-SLM User manual

100471-1
7/97
Printed on
recycled paper.
©1997 by Crown International, Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: 219-
294-8000. The IQ–P.I.P.–SLM is produced by the Professional Audio Division of Crown International, Inc.
Trademark Notice: MPX-6
™,
SMX-6
™and
Macro Reference
™are trademarks and
Amcron
®,
Crown
®,
IQ
System
®,
IOC
®,
ODEP
®,
Macro-Tech
®,
Com-Tech
®and
P.I.P.
®are registered trademarks of Crown
International, Inc. Other trademarks are the property of their respective owners.
An IQ System
®
Programmable Input Processor with Load Monitoring
for Crown
®
P.I.P.
®
-compatible Power Amplifiers

Page 2
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
WORLDWIDE
SUMMARY OF WARRANTY
The Crown Audio Division of Crown International, Inc., 1718 West
Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you,
theORIGINALPURCHASERandANYSUBSEQUENTOWNERofeach
NEW Crown1product, for a period of three (3) years from the date of
purchase by the original purchaser (the “warranty period”) that the new
Crown product is free of defects in materials and workmanship, and we
furtherwarrantthenewCrownproductregardlessofthereasonforfailure,
except as excluded in this Crown Warranty.
1
Note: If your unit bears the name “Amcron,” please substitute it for the
name “Crown” in this warranty.
ITEMS EXCLUDED FROM THIS CROWN WARRANTY
This Crown Warranty is in effect only for failure of a new Crown product
whichoccurred withinthe WarrantyPeriod. Itdoes notcover anyproduct
which has been damaged because of any intentional misuse, accident,
negligence, or loss which is covered under any of your insurance
contracts. This Crown Warranty also does not extend to the new Crown
product if the serial number has been defaced, altered, or removed.
WHAT THE WARRANTOR WILL DO
Wewill remedyanydefect, regardlessofthe reasonfor failure (exceptas
excluded), by repair, replacement, or refund. We may not elect refund
unless you agree, or unless we are unable to provide replacement, and
repairisnotpracticalorcannotbetimelymade.Ifarefundiselected,then
youmustmakethedefectiveormalfunctioningproductavailabletousfree
and clear of all liens or other encumbrances. The refund will be equal to
theactualpurchaseprice,notincludinginterest,insurance,closingcosts,
andother finance charges less areasonable depreciationon theproduct
fromthe date of original purchase.Warranty workcan onlybe performed
atour authorized service centers. Wewill remedythe defectand ship the
productfromtheservicecenterwithinareasonabletimeafterreceiptofthe
defective product at our authorized service center.
HOW TO OBTAIN WARRANTY SERVICE
You must notify us of your need for warranty service not later than ninety
(90)days afterexpiration of thewarranty period.All components mustbe
shipped in a factory pack. Corrective action will be taken within a
reasonable time of the date of receipt of the defective product by our
authorized service center. If the repairs made by our authorized service
center are not satisfactory, notify our authorized service center
immediately.
DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES
YOUARENOTENTITLEDTORECOVERFROMUSANYINCIDENTAL
DAMAGES RESULTING FROM ANY DEFECT IN THE NEW CROWN
PRODUCT.THISINCLUDESANYDAMAGETOANOTHERPRODUCT
OR PRODUCTS RESULTING FROM SUCH A DEFECT.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or modify this Crown
Warranty.ThisCrownWarrantyisnotextendedbythelengthoftimewhich
you are deprived of the use of the new Crown product. Repairs and
replacementparts providedunderthe termsofthis CrownWarrantyshall
carry only the unexpired portion of this Crown Warranty.
DESIGN CHANGES
Wereservetherighttochangethedesignofanyproductfromtimetotime
without notice and with no obligation to make corresponding changes in
products previously manufactured.
LEGAL REMEDIES OF PURCHASER
Noaction toenforce thisCrown Warrantyshall becommenced laterthan
ninety (90) days after expiration of the warranty period.
THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS
CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS.
9/90
NORTH AMERICA
SUMMARY OF WARRANTY
The Crown Audio Division of Crown International, Inc., 1718 West Mishawaka
Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL
PURCHASER and ANY SUBSEQUENT OWNER of each NEW Crown prod-
uct, for a period of three (3) years from the date of purchase by the original
purchaser(the “warrantyperiod”)that thenewCrown productis free ofdefects
in materials and workmanship. We further warrant the new Crown product
regardless of the reason for failure, except as excluded in this Warranty.
ITEMS EXCLUDED FROM THIS CROWN WARRANTY
This Crown Warranty is in effect only for failure of a new Crown product which
occurred within the Warranty Period. It does not cover any product which has
beendamagedbecauseofanyintentionalmisuse,accident,negligence,orloss
which is covered under any of your insurance contracts. This Crown Warranty
also does not extend to the new Crown product if the serial number has been
defaced, altered, or removed.
WHAT THE WARRANTOR WILL DO
We will remedy any defect, regardless of the reason for failure (except as
excluded), by repair, replacement, or refund. We may not elect refund unless
you agree, or unless we are unable to provide replacement, and repair is not
practical or cannot be timely made. If a refund is elected, then you must make
thedefectiveor malfunctioning productavailabletous freeandclearofall liens
or other encumbrances. The refund will be equal to the actual purchase price,
notincluding interest, insurance, closing costs,and otherfinance chargesless
a reasonable depreciation on the product from the date of original purchase.
Warrantyworkcanonlybeperformedatourauthorizedservicecentersoratthe
factory.We willremedy the defectand shipthe product fromthe servicecenter
or our factory within a reasonable time after receipt of the defective product at
our authorized service center or our factory. All expenses in remedying the
defect,includingsurfaceshippingcostsintheUnitedStates,willbebornebyus.
(You must bear the expense of shipping the product between any foreign
countryandtheportofentryintheUnitedStatesandalltaxes,duties,andother
customs fees for such foreign shipments.)
HOW TO OBTAIN WARRANTY SERVICE
You must notify us of your need for warranty service not later than ninety (90)
days after expiration of the warranty period. All components must be shipped
in a factory pack, which, if needed, may be obtained from us free of charge.
Correctiveaction willbe takenwithin areasonable timeof the dateof receiptof
thedefectiveproductbyusorourauthorizedservicecenter.Iftherepairsmade
by us or our authorized service center are not satisfactory, notify us or our
authorized service center immediately.
DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES
YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL
DAMAGES RESULTING FROM ANY DEFECT IN THE NEW CROWN
PRODUCT. THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR
PRODUCTS RESULTING FROM SUCH A DEFECT. SOME STATES DO
NOT ALLOW THE EXCLUSION OR LIMITATIONS OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR
EXCLUSION MAY NOT APPLY TO YOU.
WARRANTY ALTERATIONS
Nopersonhastheauthoritytoenlarge, amend, ormodifythisCrownWarranty.
This Crown Warranty is not extended by the length of time which you are
deprived of the use of the new Crown product. Repairs and replacement parts
providedundertheterms ofthisCrownWarrantyshall carryonlytheunexpired
portion of this Crown Warranty.
DESIGN CHANGES
We reserve the right to change the design of any product from time to time
without notice and with no obligation to make corresponding changes in
products previously manufactured.
LEGAL REMEDIES OF PURCHASER
THIS CROWN WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, YOU
MAYALSOHAVEOTHERRIGHTSWHICHVARYFROMSTATETOSTATE.
NoactiontoenforcethisCrownWarrantyshallbecommencedlaterthanninety
(90) days after expiration of the warranty period.
THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS
CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS.
9/90
Telephone: [phone]. Facsimile: 219-294-8301
Telephone: [phone]. Facsimile: 219-294-8301
THREE YEAR
FULL WARRANTY
YEAR
3
YEAR
3

Page 3
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
Quick Install Procedure
This procedure is provided for those who are already familiar with Crown’s IQ System
and who would like to install the IQ–P.I.P.–SLM in the shortest time possible. Less
experienced installers or those wishing a full explanation of the installation procedure
are encouraged to go to Section 4 where the full installation procedure is described.
Prepare the IQ–P.I.P.–SLM:
1. Set the IQ address switch SW1 (see Figures 4.1 and 4.2) on the IQ–P.I.P.–SLM to an
unused IQ address. (Tip: Record the IQ address on the small blank label that is pro-
vided on the P.I.P. panel.)
Prepare the amplifier:
2. Turn down the level controls of the amplifier and turn off the amplifier.
3. Unplug the power cord of the amplifier from the AC mains.
4. Remove the existing P.I.P. or cover panel from the amplifier back panel (two screws).
Install the IQ–P.I.P.–SLM into the amplifier:
5. Carefully ground yourself to the chassis of the amplifier before installing the IQ–P.I.P.–
SLM . It is a good idea to maintain ground contact between yourself and the amplifier
while inserting the module into the amplifier in the next step.
6. Turn the P.I.P. upside down so you can clearly see the two ribbon cable connectors
located on the underside of the top board near the back corner (see Figure 4.3). Attach
the ribbon cables from your amp to the ribbon-cable connectors. The 20-pin cable
should be connected first, then the 18-pin cable should be connected. Both ribbon
cables should run untwisted from the amplifier to the P.I.P. card.
Important:Important:
Important:Important:
Important: Be careful when attaching the ribbon cable to the connector that the cable
is properly seated before applying pressure to the connector. Forcing the cable onto
the connector could cause the keying tabs, which ensure proper pin alignment, to
break. Connecting the ribbon cables with improper pin alignments may well result in
catastrophic damage to the P.I.P. component.
When both cables are firmly attached, turn the IQ–P.I.P.–SLM back to an upright posi-
tion and insert into the P.I.P. opening in the back of the amplifier. Take care while insert-
ing the P.I.P. to make sure you do not crimp, pinch or stretch the ribbon cables.
7. Tighten the two P.I.P. mounting screws until it is secured to the amplifier back panel.
Install the wiring:
8. Connect the IQ–P.I.P.–SLM to the IQ System via the Crown Bus (see Section 4.6 if more
information is needed).
9. Connect the audio signal wiring to the IQ–P.I.P.–SLM (see Section 4.7 if more informa-
tion is needed).
10. Connect the amplifier back to the AC receptacle.

Page 4
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
The information furnished in this manual does not include all of the details of design, production, or variations of
the equipment. Nor does it cover every possible situation which may arise during installation, operation or
maintenance. If you need special assistance beyond the scope of this manual, please contact our Technical
Support Group. Crown Audio Division Technical Support Group
Plant 2 SW, 1718 W. Mishawaka Rd., Elkhart, Indiana 46517 U.S.A.
Phone: [phone] (North America, Puerto Rico and Virgin Islands) or 219-294-8200
Fax: [phone] Fax Back (North America only): 800-294-4094 or 219-293-9200
Fax Back (International): 219-294-8100 Internet: http://www.crownintl.com
WARNING
TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE!
FCC COMPLIANCE NOTICE
ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClass
A digital Device, pursuant to Part 15 of the FCC Rules. These limits are
designedtoprovidereasonableprotectionagainstharmfulinterferencewhen
the equipment is operated in a commercial environment. This equipment
generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residentialareaislikelytocauseharmfulinterferenceinwhichcasetheuser
will be required to correct the interference at his own expense.
“The user is cautioned that any changes or modifications not expressly
approvedbyCrownInternationalcouldvoidtheuser’sauthoritytooperatethe
equipment.”
PLEASE NOTE
The following universal symbols may appear on your product and/or in various sections of
this manual. Wherever they appear, they are to be interpreted as follows:
Lightning Bolt Symbol:
This symbol is used to alert the user to the presence of dangerous
voltages and the possible risk of electric shock.
ExclamationMarkSymbol:
This symbol is used to alert the user to refer to the instruction manual
for important operating or maintenance instructions.

Page 5
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
CONTENTS
Quick Install Procedure ...............................................3
1 Welcome.......................................................................7
1.1 Unpacking ..........................................................7
2 Facilities .......................................................................8
3 Features .....................................................................10
3.1 Power/Standby Indicators .................................10
3.2 IOC Event Monitor .............................................10
3.3 Power Control....................................................10
3.4 Signal Mute .......................................................10
3.5 Polarity Inverter .................................................10
3.6 Input Signal Level Monitor .................................10
3.7 Output Signal Level Monitor ..............................10
3.8 ODEP Level Monitor ..........................................10
3.9 Input Signal Attenuator ......................................10
3.10 Data Indicator ...................................................11
3.11 Aux Port ............................................................11
3.12 Memory Backup................................................11
3.13 Amp Mode ........................................................11
3.14 Amplifier Information .........................................11
3.15 User Labels.......................................................11
3.16 “All” Commands ................................................11
3.17 User Default Settings.........................................12
3.18 Reset ................................................................12
3.19 Load/Output Monitoring.....................................12
3.20 Fixed Frequency Generator...............................13
3.21 Test Tolerances .................................................13
3.22 Dataframe Trigger .............................................14
3.23 Synchronous Operation (Sync Mode) ............14
3.24 Auto Standby...................................................14
3.25 Crown Bus “Drop Out” Relays ........................14
3.26 “No-Fault” Warranty.........................................14
4 Installation..................................................................15
4.1 Prepare the IQ–P.I.P.–SLM ..................................15
4.2 Prepare the Amplifier .........................................16
4.3 Install the IQ–P.I.P.–SLM into the Amplifier ..........16
4.4 Install the Wiring................................................17
4.5 Prepare the Audio System .................................17
4.6 Configure the IQ–P.I.P.–SLM............................... 17
4.7 A Closer Look at Crown Bus Wiring ...................17
4.8 A Closer Look at Audio Signal Wiring ................19
4.9 Using the AUX Connector .................................20
4.9.1 Triggering a Test (AUX In) .......................20
4.9.2 Signaling a Failed Test (AUX Out) ...........20
4.9.3 Controlling External Devices (AUX Out) ..21
4.10 Synchronous Setup ...........................................21

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IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
ILLUSTRATIONS
1.1 IQ–P.I.P.–SLM .............................................................................. 7
2.1 The IQ–P.I.P.–SLM Facilities......................................................... 8
4.1 IQ Address Switch (SW1) Location ............................................ 15
4.2 IQ Address Switch (SW1) Values ............................................... 15
4.3 Installing the IQ–P.I.P.–SLM ....................................................... 16
4.4 A Removable Eurostyle Mating Plug .......................................... 18
4.5 IQ–P.I.P.–SLM Output to IQ Component with Barrier Block ........ 19
4.6 IQ–P.I.P.–SLM Output to IQ Component with DIN ...................... 19
4.7 IQ Component with DIN Connector to IQ–P.I.P.–SLM Input........ 19
4.8 Crown Bus Wiring “Loops” from Output to Input ........................ 19
4.9 Audio Input Wiring..................................................................... 19
4.10 The Internal AUX Circuit ............................................................ 20
4.11 A Sample AUX Output Circuit .................................................... 21
5.1 IQ–P.I.P.–SLM Circuit Block Diagram ......................................... 23
7.1 IQ Address Switch (SW1) Settings from 0 to 125 ....................... 25
7.2 IQ Address Switch (SW1) Settings from 126 to 250 ................... 26
5 Technical Information ................................................22
5.1 Audio Signals ....................................................22
5.2 Amplifier Monitoring ..........................................22
5.3 Amplifier Control................................................22
5.4 Signal Generator ...............................................22
5.5 IQ System Communications ..............................22
5.6 Microprocessor, Digital Logic, Reset Switch ......22
Contents continued...
6 Specifications ............................................................24
7 IQ AddressTables ......................................................25
8 Service .......................................................................27
8.1 Worldwide Service ............................................27
8.2 North American Service ....................................27
8.2.1 Service at a N. Am. Service Center .........27
8.2.2 Factory Service.......................................27

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IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
Fig. 1.1 IQ–P.I.P.–SLM
1 Welcome
The IQ–P.I.P.-SLM brings both load and current moni-
toring capabilities to your PIP2-compatible amplifier.*
Featuring a built-in sine-wave generator and data-
acquisitionsystem,theP.I.P.-SLMallowsyouto perform
independent testing of each amplifier channel for both
load impedance and amplifier frequency response.
The IQ–P.I.P.–SLM is an IQ2 -series component. This
means it supports Crown’s UCODE protocol and re-
quires an IQ System
®with an
IQ2 -compatible IQ Inter-
face (such as IQ-INT V2.00+ or IQ–PSI) plus IQ for
Windows 1.1+ software. UCODE (universal code) en-
ables users and third parties to develop custom soft-
ware objects to control and monitor IQ2 -compatible
components like the IQ–P.I.P.–SLM .
The IQ–P.I.P.–SLM connects the amplifier to the Crown
Bus of an IQ System so the amplifier can be controlled
and monitored. In addition, the IQ–P.I.P.–SLM contains
abuilt-insine-wavegeneratorand dataacquisitionsys-
tem which permits measurement and storage of load
impedance and system frequency response reference
curves for each channel. The generator on each card
isindependentofthoseonother cards,permitting each
channel of each amplifier to be tested separately.
The IQ–P.I.P.–SLM is powered by the amplifier and in-
cludes a microprocessor with a memory backup fea-
ture that enables the amplifier to resume operation with
all of its IQ settings intact after a power outage.
This manual will help you successfully install your unit.
We strongly recommend that you read all the instruc-
tions, warnings and cautions contained within. Also for
your protection, please send in the warranty registra-
tion card today and save the bill of sale since it is your
official proof of purchase.
1.1 Unpacking
The unit is shipped in a protective antistatic bag.
CAUTION: STATIC ELECTRICITY MAY DAMAGE
THE UNIT. Use caution when handling the unit.
Carefully ground yourself BEFORE touching the unit.
Avoid unnecessarily touching the components, edge
connector or solder pads on the circuit boards.
Please unpack and inspect the unit for any damage
that may have occurred during transit. If damage is
found, notify the transportation company immediately.
Only you, the consignee, may initiate a claim with the
carrier for shipping damage. Crown will be happy to
cooperate fully as needed. Save the shipping carton
as evidence of damage for the shipper’s inspection.
Even if the unit arrived in perfect condition, as most do,
save all packing materials. NEVER SHIP THE UNIT
WITHOUTTHE FACTORY PACK.
*Note: You must have a PIP2-compatible amplifier to use the IQ–P.I.P.–
SLM. The IQ–P.I.P.–SLM is NOT compatible with older Crown P.I.P.
amplifiers, with or without a PIP2 adapter.

Page 8
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
Fig. 2.1 The IQ–P.I.P.–SLM Facilities
Front View
Bottom View
SW1
OUTIN
Programmable
Input Processor
AUDIO IN
CH-2 CH-1
AUX
OUT IN
DATA CROWN BUS
SLM#.###
G
BB E FA A
H H
C
CABLE A
CABLE B
ON OFF
1
2
4
8
16
32
64
128
IQ ADDRESS
SWITCH
D
I J K
L
2 Facilities
A. Mounting Screws
The IQ–P.I.P.–SLM is secured to the back panel of the
amplifier with two Phillips-head screws and star-tooth
lock washers. The lock washers are required for proper
ground connection.
B. Balanced Audio Inputs
A 3-pin, Eurostyle®, removable barrier-block connec-
tor is provided for balanced audio input to each chan-
nel of the amplifier.* These removable connectors
make it easy to attach an input cable with just three
screws. Once the cable is attached, the connector can
be quickly unplugged and, if desired, moved to a dif-
ferent amplifier. Do not use the Ch.2 input if the ampli-
fier is configured in either Bridge or Parallel-Mono
mode.
*Eurostyle is a registered trademark of Beau Interconnect, Gilford NH.

Page 9
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
C. AUX Input/Output Connector
A 3-pin, Eurostyle, removable barrier-block connector
is provided to control auxiliary equipment. The AUX
output delivers 15 VDC at 15 mA maximum output
when switched on and may be controlled via software
or may be programmed to switch when a fail condition
is present on any channel.* The AUX connector also
includes a high-impedance (10 K ohm) input that can
sense logic signals and can be programmed to trigger
a test or report fault conditions when a logic high is
present. In this case the sweep is leading-edge trig-
gered and may be aborted by sending a second lead-
ing-edge trigger. (See Section 4.7 for more
information.)
D. Reset Switch
A multifunction reset switch is provided to restore the
IQ–P.I.P.–SLM to a prior state. It can be depressed with
a straightened paper clip through the small hole in the
P.I.P. panel. Press the reset switch for less than 2 sec-
onds and all settings will be reset with “user default”
parameters and the Data LED will flash once. (If no
“user default” settings have been stored, the unit will
be reset to the “factory default” settings described
next.) Press the reset switch for more than 2 seconds,
and the same settings will be reset with “factory de-
fault” parameters and the Data LED will flash twice. Af-
ter the unit has been reset to the factory default
settings, it will behave like a standard P.I.P.-FX until it is
reprogrammed by an IQ System controller or it is
toggled to the “user default” settings.
E. Data LED
The Data LED flashes whenever a valid IQ command
has been received. The indicator can also be forced to
stay on to aid rapid troubleshooting of the Crown Bus
wiring.
F. Crown Bus Input/Output Connector
A 4-pin, Eurostyle, removable barrier-block connector
is provided for both input and output connection to the
Crown Bus.
G. IQ Address Switch (SW1)
An 8-section DIP switch is used to set the IQ address
of the unit (see Section 4.1 and (L) below). A valid IQ
address is any number from 1 to 250. Do not use a
number higher than 250 since they are reserved for
special use. This switch is located on the top (IQ) cir-
cuit board. Each IQ component on a Crown Bus is
given a unique IQ address so it can be independently
controlled and monitored. Two or more IQ components
of the same type should NEVER have the same ad-
dress on the same Crown Bus loop.
H. Molex Ribbon Cable Connectors
An 18-pin and a 20-pin Molex ribbon-cable connector
are used to connect the IQ–P.I.P.–SLM to the amplifier.
The cable-connections diagram (I) printed on the bot-
tom circuit board illustrates connector positioning. The
P.I.P. card should be turned over (audio circuit board
upward) when connecting the ribbon cables from the
amplifier. Turn the P.I.P. card back to an upright posi-
tion (audio circuit board downward) before inserting
the card into the amplifier case.
I. Cable-Connections Diagram
The cable-connections diagram is printed on the bot-
tom circuit board to illustrate the positioning of the
Molex ribbon-cable connectors. When connecting the
ribbon cables from your amplifier to the IQ–P.I.P.–SLM ,
the 20-pin cable (A) should be connected first, then
the 18-pin cable (B) should be connected.
J. IQ Circuit Board (Top)
The top circuit board contains the IQ communication
circuitry, including the IQ address switch (SW1).
K. Audio Circuit Board (Bottom)
The bottom circuit board contains the audio analog cir-
cuitry.
L. IQ Address Switch Diagram
This diagram illustrates the IQ address switch layout.
Each switch, when activated (ON), carries the value
indicated in the switch diagram. The address of the
component is determined by adding the value of all
switches which are turned on. Also see Section 4.1 for
information on setting the IQ address.
*The AUX output uses inverse logic when it is configured to report a fail
condition. Normally high, it switches low when any channel fails a test. In
this way it can also indicate a power loss.

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IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
3 Features
The IQ–P.I.P.-SLM is a powerful companion for any
Crown PIP2 amplifier, with a range of features that al-
low an attached amplifier to be monitored, controlled
and tested via the IQ System. The various functions of
the IQ–P.I.P.-SLM can be categorized into two areas:
auto-control features and signal-and-load-monitoring
features.
The auto-control features provided by the IQ–P.I.P.-
SLM enable the attached Crown amplifier to function
automatically. For example, an IQ–P.I.P.-SLM can auto-
matically turn off the high voltage supplies of the am-
plifier when no input signal is present. This can lower
electrical usage and provide long-term cost savings.
In addition, a range of signal and load-monitoring fea-
tures are provided in the IQ–P.I.P.-SLM , allowing it to
be used as a powerful troubleshooting and security
tool. For example, by testing the impedance of the at-
tached load, you may be able to find and replace a
damaged speaker before it fails completely. Or you
may be able to detect unauthorized changes made to
signal levels by testing the output signal.
Configuration of the IQ–P.I.P.-SLM requires a host com-
puter (usually a PC), attached to the IQ System via an
IQ2 -compatible IQ interface, running IQ for Windows
1.1 software. Please contact your Crown representa-
tive or Crown’s Technical Support Group if you are un-
familiar with IQ software.
Once the IQ–P.I.P.–SLM is configured, it can function
as a stand-alone device without an IQ System. This will
require the use of the unit’s AUX input for manually trig-
geringtests, as wellas an AUXoutput device formanu-
ally signalling failed tests (see Section 4.7 for more
information).
3.1 Power/Standby Indicators
Power/standby indicators allow you to tell at a glance
whether power is on for each channel and whether the
output is muted. These indicators are accessed
through IQ for Wiindows 1.1 software.
3.2 IOC Event Monitor
The Input/Output Comparator (IOC
®
) of each channel
of the amplifier can be monitored by the IQ System us-
ing IQ for Wiindows 1.1 software. The IOC circuitry
actsas a sensitive distortion meter to provideyou proof
of distortion-free performance . If distortion of any kind
equals or exceeds 0.05%, the IOC circuit will cause an
indicator on the software control panel to flash, alerting
a user that distortion is occurring.
3.3 Power Control
Each channel’s high-voltage supply can be indepen-
dently turned on and off with the Power control. The IQ
for Windows software is used to set this control.
3.4 Signal Mute
The output signal of each channel can be indepen-
dentlymuted by the IQfor Windows software.The func-
tion typically provides 80 dB or more of attenuation.
3.5 Polarity Inverter
The polarity of the input signal of each channel can be
independently inverted by the IQ System . Note: Small
ticks or pops may be heard when changing polarity.
These are perfectly normal and should not be a cause
for concern.
3.6 Input Signal Level Monitor
The input signal level of each channel can be moni-
tored by IQ software. This monitor feature has a range
from +15 dBu to –40 dBu in ½-dB steps.
3.7 Output Signal Level Monitor
The output signal level of each channel of the amplifier
can be monitored by the IQ System . This monitor fea-
ture has a range from –40 dB to 0 dB where 0 dB is
referenced to the rated output voltage of the amplifier
model. (This is assumed to be 70-V or the rated 8-ohm
output for Com-Tech amplifiers or the rated 8-ohm out-
put voltage for all other amplifiers.)
3.8 ODEP Level Monitor
The Output Device Emulation Protection (ODEP
®
) level
of each channel of the amplifier can be monitored by
the IQ software. This level represents the percent of
available thermodynamic energy that is currently be-
ing used. When the ODEP level reaches 100%, the
amplifier cannot produce any more power and “ODEP
limiting” will begin to limit the drive level to the output
devices,thereby protectingthemfromtoo much stress.
(See the amplifier’s Reference or Owner’s Manual for
more information about ODEP .)
3.9 Input Signal Attenuation
An attenuator is available for each channel via IQ for Win-
dows software to control the output level signal. Each out-
put attenuator has as range from 0 dB to –80 dB in ½-dB
steps. (Zero equals no attenuation.)

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IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
3.10 Data Indicator
A Data LED is provided on the front panel. It flashes
whenever commands addressed to the IQ–P.I.P.-SLM
are received. It can be forced to stay on by IQ software
to assist with troubleshooting of an IQ System.
3.11 Aux Port
A 3-pin Eurostyle removable barrier-block connector is
provided to control auxiliary equipment. The status of
the Aux In and Aux Out ports can be monitored, and
the Aux Out port can be controlled, via the IQ System
using IQ software.
The Aux output can be used to signal a failed test, amp
fault,or to signal or switchexternal equipmentlike other
IQ Aux ports. When used in this mode, the Aux Out
uses reverse logic (high = pass; low = fail), so the unit
will not give a false pass signal when it has no power.
Both an Aux Out control and indicator are provided in
IQ software to turn the output auxiliary port of the P.I.P.
on and off., and to indicate the current on/off status of
the Aux port. When on, +15 VDC is supplied across
the OUT and (GND) pins of the Aux port. A total of
15 milliamps of current is available. A 1.5 K ohm resis-
tor protects against shorts.
In addition, the Aux input can be used to manually trig-
ger a test. This is required when the unit is operated
without a computer running IQ software actively at-
tached. When the presence of an input signal (5 to 15
VDC) is detected across the IN and (GND) pins of
the Aux port, the IQ software will signal the presence of
a logic high.
For more information on configuring the Aux port to
activate Aux In Testing and Aux Out Reporting options,
see Section 4.9.
3.12 Memory Backup
Local EEPROM memory provides secure, nonvolatile
storage of all measurements and settings. This means
that the generator settings and test data will not be lost
when power is removed from the unit. The factory de-
fault setting for the memory backup feature is “en-
abled,” although this can be disabled, if desired. When
enabled,thebackupstoresallrun-timeparametersthat
can be controlled by the IQ software into nonvolatile
memory (EEPROM) at approximately one-second in-
tervals. When disabled, all run-time parameters are re-
turned to the factory defaults whenever the unit loses
power.
Caution: Be careful to turn on the memory backup fea-
ture if the input attenuators will be used to set critical
levels. If the memory backup feature is turned off and
the IQ–P.I.P.-SLM loses power, the attenuators will be
reset to 0 dB, resulting in the loudest possible signal.
3.13 Amp Mode
The stereo/mono mode of the amplifier can be stored
into the unit’s memory so the IQ System is aware of the
amplifier’s stereo/mono switch setting. Storing this set-
ting serves as an “electronic reminder” to the system—
however, the stereo/mono mode cannot be controlled
withthissetting.Themodesavailable areStereo(Dual),
Bridge-Mono and Parallel-Mono. This software amp
mode setting is controlled by the IQ System.
3.14 Amplifier Information
Several items of information about an amplifier can be
displayed by the IQ software. These include the manu-
facturer, model, date code, serial number and revision
level. Which items are available depends on both the
amplifier and the IQ software used.
3.15 User Labels
The IQ–P.I.P.-SLM features a “user label” capability
which gives you a way to enter and keep any informa-
tion you choose into two user labels of 15 characters
each. Once created, the text of these labels is stored
both in the dataframe and in the memory of the P.I.P.
itself. The text in user label 1 is also used as a part of
the caption at the top of the control panel The text of
these labels is edited using the IQ software.
3.16 User Default Settings
The parameters for all functions (except the amplifier
ID code or user scale factors) can be saved as “user
default” parameters within the component itself. This
user preset, which can only be triggered by pressing
thereset switchlocated on the componentfor less than
two seconds, will restore all settings to the “user de-
fault” values. Please consult the documentation of your
IQ software for instructions on setting the “user default”
values.
3.17 Reset
A recessed reset switch, located on the P.I.P.’s front
panel, enables the IQ–P.I.P.-SLM to be restored to one
of two sets of default settings. A straightened paper
clip or similar object is required to press the reset
switch.

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IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
If “user default” settings have been previously estab-
lished through the IQ software, these settings will be
enabled when the reset switch is pressed and immedi-
ately released. The “Data” indicator (located on the
front panel of the IQ–P.I.P.-SLM) will also flash once to
verify this change..
When the reset switch is pressed and held (at least
two seconds), the component will switch to the factory-
default settings. At the same time, the “Data” indicator
will flash twice to verify this change. Once placed in
factory-defaultmode, the IQ–P.I.P.-SLM willoperate like
a standard P.I.P.-FX until it is reprogrammed by an IQ
System or it is toggled to the “user default” settings.
If no “user default” has been defined, either action will
result in the component reverting to the factory-default
settings.
3.18 Load/Output Monitoring
The IQ–P.I.P.–SLM can monitor both the impedance re-
sponse of a load (typically a loudspeaker) and the fre-
quency response of the amplifier. This makes it
possible to monitor the amplifier output and each loud-
speaker load to make sure that the loudspeakers are
functioning normally and that they are being fed a cor-
rect signal at a correct level.
In order to provide the required swept sine wave signal
for the tests, the IQ–P.I.P.–SLM includes its own inter-
nal, variable amplitude, direct digital synthesis (DDS)
sine wave generator. The generator’s sine-wave output
can vary in frequency from 20 Hz to 22 kHz and is se-
lectable in increments from 1 octave to 1/24 octave.
Generator frequencies are channel independent, so
each channel can sweep over a different range of fre-
quencies.
The generator output level (amplitude) range is –40
dBu to +10 dBu in 1 dB steps via a digitally controlled
attenuator. The duration of a sweep will be determined
by the sweep resolution setting and the start/stop fre-
quencies.
In addition, the generator level is summed with the at-
tenuator input level, so the net generator output will be
the sum of the two faders. For example, a –15 dB gen-
erator level paired with a –10 dB attenuator level will
result in a net generator output of –25 dB.
When a test is not being conducted, the signal gen-
erator can also be used to produce a steady sine wave
signal (test tone) at a fixed frequency for other applica-
tions. See Section 3.20 for more information on using
the Fixed Frequency Generator.
Monitoring is performed by the IQ–P.I.P.–SLM via a
three-part process. First, reference curves are created
and stored to document the “normal” operating condi-
tions of the system. Then, acceptable tolerances are
set for all test parameters, to describe acceptable de-
viation from “normal” operations. Finally, monitor test(s)
are performed to gauge the system’s current operating
conditions, with results measured against the stored
reference curves. Results recorded outside of the ac-
ceptable tolerances receive “fail” status; results within
acceptable tolerances receive “pass” status.
To begin the monitoring process, the audio system
mustfirst be configuredtoduplicate, as closely aspos-
sible, normal operating conditions. Then the signal
generatormust be configuredusing the IQSystem and
IQ for Windows 1.1 software to set the following pa-
rameters:
Label: These text input areas (one for each channel)
allow you to label each channel with an identifier.
Simply type in any label of up to 15 characters. Both
labels are held in the memory of the P.I.P. itself.
Acquire Mode: Any one of six “Acquire Modes” can
bespecified as part of thechannel’stest parameters.
The selected mode determines whether or not data
is gathered during a test, the type of data gathered,
and even whether testing is performed, or if an auto-
matic “Pass” is generated for that channel. Select
any of the following six Acquire Modes:
1. Off/Pass - performs no new data gathering—re-
ports "Pass" as a test result.
Note: The remaining five acquire modes report
"Pass/Fail" based on a comparison of test data
with reference data (The parameters for this
comparison are set through Test Tolerances).
Consequently, the differences have to do with
what new data, if any, is gathered during a test.
2. Off/Report - performs no new data gathering.
3. ImpedanceTest - gathers new impedance data
4. FrequencyTest - gathers new frequency data
5. Imp/Freq Test - gathers new impedance and
frequency data
6. Reference - gathers new impedance and fre-
quency reference data
Test Range (20 - 22,000 Hz): Sets both the begin-
ning and ending frequency of a test, plus the begin-
ning and ending frequency of the returning data.

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IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
Note: While the frequency ranges of the tests for
each channel will be restricted to those set by indi-
vidual start/stop parameters, the sweep itself will
begin at the lower of the two Start frequencies and
end at the higher of the two Stop frequencies. The
sweep becomes active/audible only over the fre-
quency range defined for each channel.
Generator Amplitude: This controls the level of the
sweep for the respective channel (channel 1 or 2).
Its range is –40 dBu to +10 dBu. Note that the gen-
erator amplitude is also used to control the level of
output for the Fixed Frequency Generator.
Sweep Resolution: Sets the frequency step size of
the test sweep. It can be set to 1/24-, 1/12-, 1/6-,
1/3-, 1/2-, 2/3- and 1-octave steps. Both channels of
the PIP-SLM share the same Sweep Resolution.
When both the audio system and the signal generator
have been properly configured, tests should be per-
formed to establish the “baseline” results for normal
operating conditions. Reference test results will be
stored as voltage, impedance, or voltage and imped-
ance curves in local memory; one curve per channel.
In addition, the most recent test results may also be
retained in local memory: one curve per channel of
voltage, impedance, or voltage and impedance. User-
defined labels for all curves may also be created and
stored in local memory. Please consult the documen-
tation for your IQ software for instructions on initiating,
monitoring, and aborting tests, as well as viewing test
results.
3.19 Fixed Frequency Generator
When a test is not being conducted, the signal gen-
erator can be used to produce a steady sine wave sig-
nal (test tone) at a fixed frequency for other
applications.
Caution: Use care when operating the test oscilla-
tor manually. The oscillator is capable of supplying
high-levelsine waves tothe amplifier,which will, inturn,
supply them to the load. A poorly adjusted oscillator
could easily damage loudspeakers or other sensitive
components. Remember, Crown is not liable for dam-
age due to the overpowering of other components.
The signal generator is configured using the IQ Sys-
tem and IQ for Windows 1.1 software to set the follow-
ing parameters:
Fixed Frequency Generator On/Off: When turned
on, the generator will output a fixed sine wave to that
channel at the frequency specified by the Fixed Fre-
quency Generator Frequency Setting.
Fixed Frequency Generator Frequency Setting:
This determines the frequency setting for the fixed
sinewave generator. It can be set from 20 to 22,000
Hz.
3.20 Test Tolerances
Once the audio system’s baseline results for normal
operating conditions has been established, tolerances
should be set to define an acceptable “window” of op-
erating conditions. Two tolerance settings are available
for configuration: Impedance and Frequency. Consult
your IQ software documentation for information on us-
ing the software interface to set tolerance amounts.
Impedance tolerance: This sets the percentage of
difference by which an impedance test may vary
from the reference and still be considered “passing.”
Tests conducted where the impedance is measured
at a percentage outside this tolerance at any point
alongthe frequencyrange will beconsidered“failed”
for purposes of the impedance test.
Frequency tolerance: This sets the difference in dB
by which a frequency test may vary from the refer-
ence and still be considered "passing." Tests con-
ducted where the frequency is measured at a dB
level outside of this tolerance at any point along the
frequency range will be considered "failed" for pur-
poses of the frequency test.
3.21 Dataframe Trigger
( IQ for Windows 1.1 software only) This software op-
tion configures the IQ System so that any subsequent
loading of the specified dataframe will result in the ini-
tiation of a test.
3.22 Synchronous Operation (Sync Mode)
When used in conjunction with an IQ–SLM-8, multiple IQ–
P.I.P.–SLMs can be configured for synchronous operation
using the shared IQ–SLM-8 test signal. When this option
is specified via IQ software, data gathering will take as
long as the longest possible sweep as required by
eight channels of data gathering in the Crown SLM-8.
When set in this configuration, a single IQ–SLM-8 gen-
erator may be used to provide the source signal for all
units under test. To use this feature to its best advan-
tage, all Start/Stop frequencies and the Sweep Resolu-
tionsmust be setthe same for allunits under test. Also,
the start of the test must be synchronized either by us-
ing the "All Start" option or by using remote Aux In trig-
ger.

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IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
Please note that when Sync Mode is selected, the main
audioinputs areusedand nodigital signalis producedby
the IQ–P.I.P.–SLM's internal DDS, since it is assumed that
an appropriate alternate DDS (from an IQ–SLM-8, for ex-
ample) is being properly utilized. When Sync Mode is not
selected, however, the IQ–P.I.P.–SLM uses its own DDS
and the main audio inputs are disabled.
See Section 4.10 for more information on Synchronous
Operation.
3.23 Auto Standby
The Auto Standby feature automatically turns off the
high-voltage supplies of the amplifier when no audio
signal is detected at the input for a predetermined
period of time. The channels are controlled
independently. Using it, many IQ Systems can pay for
themselves in just a few years due to reduced energy
costs. There are four parameters which control this
feature:
Auto Standby on/off: Turns this function on/off.
Input Gate Level: Sets the level, in dB, below
which an amplifier channel’s high voltage supply
will be turned off. The range is from +16 dBu to
–40 dBu.
Turn Off Delay: Sets the time, in minutes, that the
input signal must remain below the Standby Level
before the channel’s high-voltage supply is turned
off. The range is from 0 to 255 minutes. A setting of
0 (zero) yields a turn-off delay of approximately 2
seconds to facilitate setup of the function.
3.24 Short Errors
The Short Errors Reporting feature will automatically
signal the presence of excessive ODEP levels (a sta-
tus most often caused by a short). When Short Error
Reporting is turned on, a warning will appear when
the ODEP level exceeds that set by the level control.
The level control value will be a percentage ranging
from 1% to 100%. NOTE: High ODEP levels indicate
that the amplifier is running to "hot." Oftentimes, this is
the direct result of a short along the outputs. Set the
ODEP Level to a value over which you believe it is rea-
sonable to assume that a short has occurred.
3.25 Fault Conditions
The Fault Conditions Reporting feature will automati-
callysignal the conditionwherethe IOC is"locked"; that
is, input signal is present and appears normal, but no
output signal is being generated. You can choose to
have fault conditions reported to you via screen warn-
ings for either channel of an amplifier. When Fault Con-
dition Error Reporting is turned on, a warning will be
displayed if a fault condition exists while the input level
is below a level that you set (-40 dB to +16 dB).
Some P.I.P.s also have the ability to report Fault Errors
through the Aux Out port. This control, when turned
on, will automatically set the Aux Out port "high." Any
fault error detected will set this port "low." In this case,
the Aux Out on is the normal state of affairs, while Aux
Out off means trouble!
NOTE: It may be normal for an IOC error to exist at
extremely high input levels. Set your level at a level
belowwhich anIOC event wouldbe trulyabnormal and
not just the product of excessive input level.
3.26 Crown Bus “Drop Out” Relays
“Drop out” relays are provided on the Crown Bus ports
to maintain the continuity of the IQ communication loop
even if the IQ–P.I.P.–SLM loses power.
3.27 “No-Fault” Warranty
A three-year “No-Fault” full warranty is provided to
guarantee the specifications and protect your invest-
ment.

Page 15
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
4 Installation
Before beginning, please carefully note:
CAUTION: STCAUTION: ST
CAUTION: STCAUTION: ST
CAUTION: STAA
AA
ATIC ELECTRICITY MATIC ELECTRICITY MA
TIC ELECTRICITY MATIC ELECTRICITY MA
TIC ELECTRICITY MAY DAMAGEY DAMAGE
Y DAMAGEY DAMAGE
Y DAMAGE
THETHE
THETHE
THE
IQ–PIQ–P
IQ–PIQ–P
IQ–P.I.P.I.P
.I.P.I.P
.I.P..
..
.–SLM–SLM
–SLM–SLM
–SLM
MODULE.MODULE.
MODULE.MODULE.
MODULE.Use caution when han-
dling the unit. Carefully ground yourself BEFORE
touching the IQ–P.I.P.–SLM module. Don’t unnecessar-
ily touch the connectors, components or solder pads
on the circuit boards.
4.1 Prepare the IQ–P.I.P.–SLM
1. Set the IQ address switch SW1. By giving
each IQ component a unique address, it can be
individually controlled and monitored. When-
ever the IQ System wants to send a command to
just one IQ component, it first sends its address
and then the command down the Crown Bus.
A valid IQ address is any number from 1 to 250.
Do not use a number higher than 250 since they
are reserved for special use. An address of “0”
(zero) should never be used except to put the
IQ–P.I.P.–SLM into a stand-alone mode where it
is invisible to the IQ System and acts as a
“dumb” balanced audio input.
Switch SW1 is located on the right side on the
underside of the top circuit board (Figure 4.1). It
has eight segments because it actually contains
eight tiny switches inside. There is an arrow
printed on the switch along its left side that
points to the “ON” position and the switches are
numbered along the bottom (Figure 4.2).
BOTTOM
OUTIN
Programmable
Input Processor
AUDIO IN
CH-2 CH-1
AUX
OUT IN
DATA CROWN BUS
SLM#.###
SW1
Fig. 4.1 IQ Address Switch (SW1) Location
The 8-segment DIP switch (SW1) shown above
and in Figure 4.2 is used to set the IQ address of
the IQ–P.I.P.–SLM. No two IQ components of the
same type which are connected to the same
Crown Bus can have the same address. Sup-
pose, for example, the IQ System has two
Crown Bus loops and this IQ–P.I.P.–SLM is in-
stalled into loop 1 and given address 77. No
other IQ–P.I.P.–SLM can have the same address
in loop 1. However, an IQ–P.I.P.–SLM in loop 2
can have the same address.
Different IQ components in the same Crown Bus
loop can have the same address. For example,
both an SMX-6 mixer and an IQ–P.I.P.–SLM can
use address 77 in the same loop.
1
2
4
8 16 32 64 128
VALUE
TOP VIEW
12345678
ON
SW1
Fig. 4.2 IQ Address Switch (SW1) Values
Each of the eight switches in SW1 has a value
which doubles as the switch number increases.
For example switch 1 has a value of 1; switch 2
has a value of 2; switch 3 has a value of 4;
switch 4 has a value of 8 and so on.
The address is determined by adding the val-
ues of all switches which are turned on. In Fig-
ure 4.2 switches 1, 3, 4 and 7 are on. Simply add
the values to find the address: 1+4+8+64=77.
A convenient series of IQ address tables are in-
cluded in Section 7. The tables show the switch
settings for all 250 addresses. A diagram illus-
trating the IQ address switch values is also
printed on the right side of the bottom circuit
board for easy reference.
4.2 Prepare the Amplifier
2. Turn down the level controls (full counter-
clockwise) and turn off the amplifier.
3. Disconnect the amplifier’s power cord.
4. Remove the existing P.I.P. or cover panel from
the amplifier back panel (two screws). If the
amp is a PIP2 amplifier, it may contain a P.I.P.

Page 16
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
card and a PIP2 input adapter. If so, remove
both the P.I.P. card and the PIP2 adapter by de-
taching the ribbon cables from the PIP2 adapter.
The P.I.P. card and PIP2 adapter may then be
inserted into another P.I.P.-compatible amplifier,
or may be stored for future use. Be sure to store
both the P.I.P. and adapter in antistatic packag-
ing.
4.3 Install the IQ–P.I.P.–SLM into the
Amplifier
5. Carefully ground yourself to the chassis of the
amplifier before installing the IQ–P.I.P.–SLM . It is
a good idea to maintain ground contact be-
tween yourself and the amplifier while inserting
the module into the P.I.P.
6. Install the IQ–P.I.P.–SLM into the amplifier:
Turn the IQ–P.I.P.–SLM over so that you can
clearly see the two ribbon-cable connectors lo-
cated on the underside of the top board near the
back corner (see Figure 2.1). Connect the two
input ribbon cables of the amplifier. The 20-pin
cable (A) should be connected first, then the 18-
pin cable (B) should be connected. Both ribbon
cables should run untwisted from the amplifier
to the P.I.P. card (see Figure 4.3).
ImporImpor
ImporImpor
Important:tant:
tant:tant:
tant: Be careful when attaching the rib-
bon cable to the connector that the cable is
properly seated before applying pressure to the
connector. Forcing the cable onto the connector
could cause the keying tabs, which ensure
proper pin alignment, to break. Connecting the
ribbon cables with improper pin alignments may
well result in catastrophic damage to the P.I.P.
component.
When both cables are firmly attached, turn the
IQ–P.I.P.–SLM back to an upright position and
insert into the P.I.P. opening in the back of the
amplifier. Take care while inserting the P.I.P. to
make sure you do not crimp, pinch or stretch the
ribbon cables.
7. Tighten the two P.I.P. mountingscrewsuntilthe
P.I.P. is secured to the amplifier back panel.
4.4 Install the Wiring
8. Connect the IQ–P.I.P.–SLM to the IQ System
via the Crown Bus. See Section 4.7 for full in-
structions.
Fig. 4.3 Installing the IQ–P.I.P.–SLM
OUTIN
Programmable
Input Processor
AUDIO IN
CH-2 CH-1
AUX
OUT IN
DATA CROWN BUS
SLM#.###
Rotate PIP2 180° in
opposite direction
BACK PANEL
OF PIP2
AMPLIFIER
OUTIN
Programmable
Input Processor
AUDIO IN
CH-2 CH-1
AUX
OUT IN
DATA CROWN BUS
SLM#.###
Slide PIP2 Into Amplifier
BACK PANEL
OF PIP2
AMPLIFIER
Plug In CABLE A
B
A
BACK PANEL
OF PIP2
AMPLIFIER
18 PIN (B)
20 PIN (A)
OUTIN
Programmable
Input Processor
AUDIO IN
CH-2 CH-1
AUX
OUT IN
DATA CROWN BUS
SLM#.###
BACK PANEL
OF PIP2
AMPLIFIER
18 PIN (B)
B
A
20 PIN (A)
OUTIN
Programmable
Input Processor
AUDIO IN
CH-2 CH-1
AUX
OUT IN
DATA CROWN BUS
SLM#.###
Rotate PIP2 180°
18 PIN (B)
20 PIN (A)
Plug In CABLE B
B
A
BACK PANEL
OF PIP2
AMPLIFIER
OUTIN
Programmable
Input Processor
AUDIO IN
CH-2 CH-1
AUX
OUT IN
DATA CROWN BUS
SLM#.###

Page 17
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
13. Perform and verify reference tests. Using the
IQ software, make a reference measurement for
each channel that you plan to use. The refer-
ence measurements will be used for compari-
son with all future measurements to determine if
the system is still within tolerance. Note: Refer-
ence measurements may include both imped-
ance and frequency response.
Remember that environmental conditions can
cause natural variations in any audio system.
Make several preliminary measurements before
the final reference measurements in order to de-
termine how the system varies under normal op-
erating conditions. For example, temperature,
humidity, wind and ambient noise levels can all
have a significant effect on loudspeakers. Try to
obtain reference measurements that reflect the
average response of your system.
14. Set the tolerance levels. After the natural sys-
tem variations have been determined in Step
13, use the IQ software to set the tolerance of
each channel’s impedance and frequency re-
sponse measurements. The tolerance of the im-
pedance measurements is set as a ± percent
range (%) and the tolerance of the frequency
response is set as a ± decibel range (dB).
In the future you will need to use either the IQ software
or the AUX input to trigger a test. You will also need to
use the IQ software or the AUX output to signal a failed
test.
If you choose to disconnect the IQ–P.I.P.–SLM from the
IQ System for stand-alone operation, refer to Section
4.9.1 for instructions on how to use the AUX input to
manually trigger a test without an IQ System and Sec-
tion 4.9.2 for instructions on how to use the AUX output
to signal a failed test without an IQ System.
Finally, we suggest that you establish a schedule for
making tests on a regular basis. The scheduling fea-
tures included in your IQ software can assist with this
process. See the IQ software documentation for more
information.
4.7 A Closer Look at Crown Bus Wiring
The IQ–P.I.P.–SLM must be connected to a Crown Bus
loop having an IQ2 -compatible IQ interface in order
for the IQ System to control or monitor it. An IQ2- com-
patible interface is an IQ-INT (containing a V2.0+ chip)
or an IQ-PSI (Pocket Serial Interface). The Crown Bus
is a serial communication loop designed to transmit IQ
9. Connect the audio signal wiring to the IQ–
P.I.P.–SLM . Two 3-pin Eurostyle barrier block in-
put wiring connectors, one for each channel,
are provided on the IQ–P.I.P.–SLM . See Section
4.8 for full instructions.
10. Reconnect amplifier to the AC receptacle.
4.5 Prepare the Audio System
Since the IQ–P.I.P.–SLM will be used to verify that the
system is working properly, the “normal” condition of
the audio system must be established before the IQ–
P.I.P.–SLM can be configured. This involves the next
two steps:
11. Set all equalizers, filters and delays. (NOTE:
This step applies only to IQ–P.I.P.–SLMs syn-
chronized with an IQ–SLM-8.) If you plan to
use the IQ–P.I.P.–SLM to monitor the frequency
response of the audio system, you must first
place the IQ–P.I.P.–SLM in Syn Mode with an IQ–
SLM-8 (see Section 4.10 for more information).
Then you will need to adjust and verify the set-
ting of all equalizers, filters, delays and any
other processing gear that will affect the monitor
points.
12. Set and verify all levels. You will also need to
adjust and verify the gain structure of your audio
system. This means adjusting all levels to the
optimal setting for your system. For example,
determine the master volume setting for your
mixer or preamps and adjust your compressors,
limiters and other processing gear with gain
controls to their optimal setting.
Steps 11 and 12 are included so you will understand
that your audio system must be prepared before the
IQ–P.I.P.–SLM can be configured. However, a full de-
scription of these steps is beyond the scope of this
manual.
4.6 Configure the Load Monitoring Functions
of the IQ–P.I.P.–SLM
Once the IQ–P.I.P.–SLM has been installed and the au-
dio system has been properly prepared, it is time to
configure the IQ–P.I.P.–SLM . This will require that the
IQ–P.I.P.–SLM be connected toan IQSystem .The mini-
mum required equipment is an IQ interface and a host
computer running Turbo 1.4 or IQ for Windows 1.1+
software.
The following steps summarize the process used to
configure your IQ–P.I.P.–SLM. Please refer to your IQ
software documentation for complete instructions.

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IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
commands and data. As implemented in the IQ–P.I.P.–
SLM , it is a 20 milliamp current loop operating at a
BAUD rate of 38.4 K. The loop must be unbroken.
If the system includes an IQ–INT II interface, it can ac-
cept eight different Crown Bus loops or zones. Divid-
ing the sound system into different zones, each with its
own Crown Bus loop, can have several advantages.
The following list contrasts those advantages with
those of a single loop.
Multiloop Advantages
• A break in communication in one loop does not
affect other loops.
• Over 250 IQ components of the same type can
be used in a system.
• The same IQ address can be used more than
once (once per loop per model).
Single Loop Advantages (with IQ-INT II interfaces)
• The IQ System can send and retrieve data faster
in a single loop.
• “Real time” level display of a greater number of
units is possible.
The IQ–P.I.P.–SLM can be connected to the Crown Bus
with inexpensive twisted-pair wiring (shielded or un-
shielded). If fiber optic wiring is required, contact the
Crown Technical Support Group (see page 4).
Here are some guidelines for twisted-pair wiring:
•Use unshielded twisted-pair wirUse unshielded twisted-pair wir
Use unshielded twisted-pair wirUse unshielded twisted-pair wir
Use unshielded twisted-pair wiree
ee
e in most
cases, since unshielded wire has lower capaci-
tance and, typically, interference is not a prob-
lem. However, when interference is a problem,
you should use shielded twisted-pair wiring at
least 26 AWG in size. The wire should be of
good quality and should have low capaci-
tance—30 picofarads/foot or less is good. (West
Penn 452 or an equivalent wire works well.) The
shield serves two purposes: First, it helps pre-
vent the IQ data signal from transmitting to
nearby audio wiring. Second, it helps prevent
outside RF from interfering with the data signal.
•Minimize the total capacitance of eachMinimize the total capacitance of each
Minimize the total capacitance of eachMinimize the total capacitance of each
Minimize the total capacitance of each
CrCr
CrCr
Crown Bus loop.own Bus loop.
own Bus loop.own Bus loop.
own Bus loop. The total capacitance should
be less than 30 nanofarads. Allow for approxi-
mately 60 picofarads for each IQ component in
a loop. This accounts for a slight delay which
occurs as data signals pass through a compo-
nent.
•Add an IQ RepeaterAdd an IQ Repeater
Add an IQ RepeaterAdd an IQ Repeater
Add an IQ Repeater for very long loops—
greater than 1,000 feet (305 m)—or when re-
3/16 in
(0.48 cm)
Fig. 4.4 A Removable, Eurostyle Mating Plug
quired by high-capacitance wire. Although we
recommend a repeater for loops longer than
1,000 feet, it is often possible to go 2,000 feet
(610 m) or more. The most significant character-
istic of the wire is its capacitance. Lower capaci-
tance allows longer loops. Unshielded wire
usually has less capacitance.
•Never use the grNever use the gr
Never use the grNever use the gr
Never use the ground wiround wir
ound wiround wir
ound wire in a mic snakee in a mic snake
e in a mic snakee in a mic snake
e in a mic snake
line.line.
line.line.
line. It may sometimes be convenient to run
Crown Bus data signals to and from stage moni-
tor amplifiers along unused wire pairs in a mic
snake. Do not use the ground wire which is nor-
mally connected to pin 1 on an XLR connector
or data noise will be added to the audio lines.
Use only the signal lines which normally con-
nect to pins 2 and 3 of the XLRs. Note: Because
typical mic cables have high capacitance, the
maximum possible Crown Bus loop distance will
be less.
Outside RF interference is seldom a problem for a
Crown Bus loop—especially if shielded twisted-pair
wire is used. However, there are extreme situations
when fiber optic wiring is recommended. For example,
locating a Crown Bus loop next to an AM radio trans-
mission line may require fiber optic cabling. An ex-
tremelylong CrownBus loop distance may also require
fiber optic cabling.
There are two different types of connectors used for
Crown Bus wiring: DIN connectors and removable
Eurostyle barrier block connectors. The IQ–P.I.P.–SLM
uses a single 4-pin Eurostyle barrier block connector
that accepts a removable mating plug like the one
shown in Figure 4.4.
Forreliableconnection, cleanly strip the jacketfromthe
wire, twist and fold conductor back over the jacket. In-
sert wire into Eurostyle connector and tighten the set
screw.

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IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
Figure4.5shows how the output of the IQ–P.I.P.–SLM is
wired to an IQ component with a similar connector.
Wiring the output of a similar IQ component back to the
input of the IQ–P.I.P.–SLM is simply the reverse.
4.8 A Closer Look at Audio Signal Wiring
Balanced 3-pin removable Eurostyle barrier block con-
nectors are provided for audio input connection. The
audio cables should be wired in one of the following
manners (see Figure 4.9):
INPUT
INPUT
2-wire line cord
(or battery power)
Note: If two or more channels with
the same input ground reference
are driven from the same
floating source, connect
only one shield to the
source chassis.
Floating
source
–
+
3-wire grounded line cord
(or other ground connection)
Output
Shield not connected
at this end
Grounded
source
–
+
Output
+–
+–
Fig. 4.9 Audio Input Wiring
Thenexttwo figuresshow howtoconnect the IQ–P.I.P.–
SLM toIQcomponentswithdifferentconnectors.Figure
4.6 shows how to connect the IQ–P.I.P.–SLM to an IQ
component with a DIN input connector.
1 Input (–)
2 Input (+)
3 GND
4 Not used
5 Not used
Output (+)
Output (–)
Input (+)
Input (–)
2
5
3
4
1
Optional Shield
IQ Component Input
OUT IN
+–+–
IQ–P.I.P-SLM Output
Output (+)
Output (–)
Input (+)
Input (–)
GND Lu
g
GND 1
Output (+) 2
Not used 3
Not used 4
23
41
Optional Shield
IQ Component Output
OUT IN
+–+–
IQ–P.I.P-SLM Input
Fig. 4.6 IQ–P.I.P.–SLM Output Connection to an
IQ Component with a DIN Input Connector
Fig. 4.7 An IQ Component with a DIN Output
Connector to an IQ–P.I.P.–SLM Input Connection
Figure4.7showshowtoconnectanIQcomponentwith
a DIN output connector to the IQ–P.I.P.–SLM.
The IQ components in each Crown Bus loop are wired
sequentially. The loop begins and ends with the IQ
interface. The output of one IQ component “loops” to
the input of the next and so on as shown in Figure 4.8.
Fig. 4.5 IQ–P.I.P.–SLM Output Connection to Another
IQ Component with a Barrier Block Connector
OUT IN
+–+–
Output (+)
Output (–)
Input (+)
Input (–)
GND Lug
Output (+)
Output (–)
Input (+)
Input (–)
IQ–P.I.P-SLM Output
Optional Shield
OUT IN
+–+–
IQ Component Input
IQ Interface
IQ Component
IQ Component
IQ Component
CROWN BUS LOOP
Fig. 4.8 Crown Bus Wiring “Loops” from the Output
to the Input of Each IQ Component

Page 20
IQ–P.I.P.–SLM Programmable Input Processor with Load Monitoring for IQ Systems
Reference Manual
The internal AUX circuit is shown below in Figure 4.10:
The AUX connector is a 3-pin removable Eurostyle bar-
rier block connector. The OUT and (GND) pins are
used to send a signal and the IN and (GND) pins
are used to receive a signal .
4.9.1 Triggering a Test (AUX Input)
The AUX input is a high-impedance (10 K ohm) input.
To trigger a test with it you must do two things: 1) Use
IQ software to set the IQ–P.I.P.–SLM to respond to a
logic “high” at the AUX input; and 2) Connect an exter-
nal voltage (TTL level) to the AUX input across the IN
and (GND) pins. A +5 to +15 VDC signal will be
recognizedasalogic high. Asignallessthan+1.6VDC
oran electrical open will beinterpretedas a logic “low.”
See the IQ software User Manual for instructions on
configuring the IQ–P.I.P.–SLM to respond to the AUX
input.
Note: A negative signal can also be used as a logic low
because the signal is internally clamped to protect the
internal circuitry.
4.9.2 Signaling a Failed Test (AUX Output)
When the AUX output is turned on, +15 VDC is sup-
plied across the OUT and (GND) pins. A total of 15
milliamps of current is available. A 1.5 K ohm resistor
protects against shorts.
The IQ–P.I.P.–SLM can be configured by the IQ soft-
ware to signal a failed test via the AUX output. It does
this with reverse logic. The AUX port will be turned on
to indicate that all channels have passed the most re-
cent test and turned off to indicate that one or more
We strongly recommend that balanced wiring be used
if possible. Some important guidelines follow:
• Always use shielded wire. The higher the density
of the shield (the outer conductor), the better.
Spiral wrapped shield is not recommended.
• When using unbalanced lines, keep the cables
as short as possible. Avoid lengths greater than
10 feet (3 meters).
• Donot run audio input cables together with high-
level wiring such as loudspeaker wires or AC
cords. (This lessens the chance of hum or noise
being induced into the input cables.)
• Do not connect audio and data grounds to-
gether. For example, do not connect the audio
ground to the Crown Bus ground.
• Turn the entire sound system off before chang-
ing any connections. Turn the level controls
down before powering the system back up.
Crown is not liable for damage incurred when
any transducer or component is overdriven.
IMPORTANT: Do not feed asignal into thephone jacks
on the back panel of the amplifier (if provided). The
phone jacks are wired in parallel with the output of the
P.I.P. connector inside the amplifier. Any audio signal
fed into the phone jacks could feed back into the out-
put of the IQ–P.I.P.–SLM and generate a distorted input
signal. The phone jacks can be used to “daisy chain”
thepost-processedsignal fromthe IQ–P.I.P.–SLM to the
inputs of other amplifiers.
DO NOT USE THE CHANNEL 2 INPUT if the amplifier
is used in either Bridge-Mono or Parallel-Mono mode.
For additional information on audio input connection
please refer to the amplifier’s Reference or Owner’s
Manual . It contains helpful information on preventing
unwanted subsonic frequencies, radio frequency inter-
ference, ground loops, and feedback oscillation.
4.9 Using the AUX Connector
The IQ System offers tremendous flexibility and the
AUX connector provides a means of tapping into it. For
example, the AUX input can be used to trigger a test
and the AUX output can be used to signal that one or
more channels have failed an impedance and/or fre-
quency response test. Both of these features must be
configured via IQ software.
TheAUX port can also functionlike a traditionalIQ AUX
port. For example, the AUX output can be used to
switch a relay that can turn on/off other non-IQ compo-
nents in the system.
Fig. 4.10 The Internal AUX Circuit
IN
OUT
AUX
CONNECTOR
GND
1.5 K ohm
+15 V
INTERNAL AUXILIARY
CIRCUITRY
20 K ohm
20 K ohm