RTS 4010 User manual

TECHNICAL MANUAL
MODEL 4010 1
0
0
Central Electronics
9300-2594-00 Rev G 6/00
RTSTM
Includes:
Model 4001 ControlStationfor 4 IFB, 1SA
Model 4001M ControlStation for 4 IFB, 1SA withMicrophone
Model 4002 ControlStationfor
8 IFB, 2 SA
Model 4002M ControlStation for
8 IFB, 2 SA withMicrophone
Model
4003 ControlStationfor 12IFB, 3 SA
Model 4lW3M ControlStationfor 12 IFB,
3 SA withMicrophone
Model
4020
Portable User Statlon / TalentElectronics

PROPRIETARY NOTICE
The RTS pmduct informationand design disflosed herein
were ori~natedby and
are the property of Telex
Communications.lnc.Telex reserves all tent,
proprietary design, manufacturing,repdction,useand
salesnghts thereto, and
to any anicled~sclosedthereln,
except to the extent rights
are expressly granted to others.
COPYRIGHT NOTICE
Co fight 1994by Telex Communications,Inc.. All
R
rig ts reserved. Reproduction in whole or in part without
pnor written permission from Telex is prohibited.
UNPACKINGAND INSPECTION
Immediately upnrecei of the equipment, inspect the
shippingcontalnerand
5: e contentscarefully foran
discreoanciesor damage. Should there be anv. noti& the
, .
freighicompany and &e dealer atonce.
WARRANTY INFORMATION
RTS products are wananted by Telex Communications,
Inc. to
be Eree from defectsin materialsand workmanship
fora period of three years
from the dateof sale.
The soleobligationof Telex during the warranty period is
to provide,
without charge,parts and labor necessary to
remedy covered defects appearin in products returned
pre 'd toTelex. This wananty
f oes not coverany defect,
magnction or failurecaused beyond
the controlof Telex,
covered by this warranty.
Toobtain wamnty service, followthe procedures entitled
"Procedure For Returns" and "Shippingto Manufacturer
forRepairor Adjustment".
Thiswarranty is the soleand exclusive expresswarran
Y
eiven with resuect m RTS ~roducts.It is the resmnsibi itv
6f the user to determinebetore purchase that &s produci
is suitablefor the user's intended purpose.
WARRANTY.
NEITHER TELEX NOR THE DEALER WHO SELLS
RTS PRODUCTSIS LIABLE FOR INCIDENTAL OR
CONSEQUENTIALDAMAGES OF
ANY KIND.
CUSTOMER SUPPORT
Technical questionsshould be directedto:
CustomerService Deoartment
RTSITelex,
12000Podand Avene South
Burnsville.
MN 55337U.S.A.
~elephone
[phone]
Fax: [phone]
RETURNSHIPPING INSTRUCTIONS
PROCEDURE FOR RETURNS
If a repair isnecessary,contact the dealerwhere this unit
was pwchased.
If re air throu the dealer is not possible, obtain a
&A& ORIZATION
from:
CustomerServiceDepamnent
Telex Communications,Inc.
Telephone: [phone]
Fax: [phone]
DO NOT RETURN ANY EQUIPMENT DIRECTLY
TO
THE FACTORY WITHOUT FIRST
OBTAINING A RETURN AUTHORIZATION.
Be prepared to provide the company name, address,
phone number. a penon to contact regardink the repair.
the type and
quantity ofequipment, a description of the
problem and ihe serialnum&(s).
SHIPPING TOMANUFACTURER FOR REPAIR OR
ADJUSTMENT
All shipmentsof RTS products should be made via
United Parcel Service or the best available ship,
.
pre~id.The yuifment should be shipped in e onglnal
pac ng carton,
I that 1s not available,use any suitable
containerthat isrigid and of adequatesize. If a substitute
containeris
used, the equipment should be wrap
moer and sumunded with at leastfour incheso ped in
kxielsiororsimilar shock-absorbingmaterial. All
shi menu must
he sent to the following address and must
inc
P ude the Return Authorization.
Factoly ServiceDepartment
Telex Communicahons,Incorporated
West 1stStreet
Blue
Earth, MN 56013U.S.A.
Upon completion of any re 'r
ihe equipment will be
returned vla United Parcel crviceor specified shipper
-.
collect.
-Page ii-

TABLE OF CONTENTS
SECTION 1: NlRODU(XI0N AND SPECIFICATIONS ............................... Id
.....................................................
1.1INTRODUCTION 1-1
1.2 USER STATIONMODEL 4020
............................................. 1-1
1.3CENTRALELF!CIRONICSMODEL4010 ....................................... 1-1
1.4 CONTROLSTATIONMODELS4001.4002. 400314001M
. 4002M. 4003M ..................... 1-2
1.5 SPLIITERASSEMBLYMODELS
4022 AND 4025A ................................. 1-2
1.6SPECIALOPTIONS
.................................................... 1-2
....................................................
1.7SPECmCATIONS 1-3
1.7.1 MODEL4010CENTRALELEClXONICS
.................................... 1-3
1.7.2 MODELS 40011400lM.
W4002M. 400314003M ............................... 1-3
SECTIONTINSTAUATION
............................................... 21
2.1 STANDARDINSTALLATION .............................................. 2-1
2.1.1
INPUT ELECTRICALPOWER (MAINS) .................................... 2-1
2.1.2CONFlGURATIONS
................................................ 2-1
2.1.3
WIRE AND CABLE CONSIDERATIONS .................................... 2-1
2.1.4 CONNECnON
TO EXISTINGMICROPHONES. "TW" TYPE USER STATIONS & OTHER SOURCES . 2-1
2.2 OFTIONSINSTALLATION
............................................... 2-1
2.21 SEITINGUPPRIORrIY
............................................. 2-2
2.2.2
SEITINGUPSPEAKERMUTINGZ0NF.S ................................... 2-2
2.2.3
RElVRN IF'B INSTALLATIONS ......................................... 2-2
2.2.4 EXPANDING
THE CONTROL STATI0N"S ALL FUNCTION ........................ 2-2
2.2.5MONO
IFB ..................................................... 2-2
......................................
SECTION J: OPERATINGINSTRUCTIONS
.....................................................
3-1
3.1INTRODUCTION 3-1
3.2 SETUPAND OPERATION OF
THE CENTRAL ELEClXONICS. MODEL 4010
.................. 3-1
. . ..............
3.3 CONTROLSTATION OPERATIONMODELS 40011400lM 4fM2I4OOZM 400314003M 3-1
3.4 USER STATIONOPERATION. MODEL
4020 ..................................... 3-1
3.5 SUBSTITUTING
"TW" INTWCOMSTATIONS FOR IFB USER STATIONS .................... 3-1
3.6 OPERATING
WITH TELCODRY PAIR@) ....................................... 3-2
3.7 OPERATINGDISTANCES
................................................ 3-2
........................................
SE€TION4:THEORYOFOPERATION 4-1
.....................................................
4.1INTRODUCTMIN 4-1
4.2 OVERALLFUNCTIONALDESCRIPTION
.......................................
4-1
4.3
CENTRAL ELF!CIRONICS FUNCTIONALDESCRIPTION ............................. 4-1
4.4 CONTROLSTATIONFUNCTIONALDESCRIPTION
................................. 4-3
4.5 USER STATIONFUNCTIONALDESCRIPTION
.................................... 4-4
4.6RETURNIFBFUNCTIONALDESCRIPTION ..................................... 4-4
SECTI0NS:mTNAN CE ............................................... 5-1
5.1INTRODUCTION ..................................................... 5-1
5.2SERVICEINFORMATION.
............................................... 5-1
5.3 GENERALMAINTENANCE
............................................... 5-1
5.3.1
INPUT POWER SELECTION ...........................................
5-1
....................................................
5.3.2CLEANING 5-1
5.3.3 NSEREPLACEMENT
.............................................. 5-1
-Page iii-

r l
TABLE OF CONTENTS (Continued)
5AF'EwoRMANCE~ ................................................ 55
5.4.1 MODEL 4010TEST PROCEDURE 5-5
5.4.2 MODEL 4001CONTROL STATIONMIC PRETESTPROCEDURE 5-5
..........................................
a
........................
5.4.3 MODEL 4001 IFB CONTROLSTATION TEST PROCEDURE ........................... 5-6
5.4.4 MODEL
4002 IFB CONTROL STATION TESTPROCEDURE ........................... 5-6
5.45 MODEL4003
IFB CONTROL STATION TEST PROCEDURE ........................... 5-7
5.4.6 MODEL4020USER STATION
TEST PROCEDURE ................................ 5-8
5.5TROUBLESHOOTlNG
.................................................. 5-8
SECITON 6: LISTS OF REPLACEABLE PARTS ....................................
6-1
6.1INTRODUCnON ..................................................... 6-1
6.2 HOW
M OBTAINPARTS ................................................
6-1
6.3 SHIPPINGLISTMODEL
4001 - KlOO-2359M) .................................... 6-1
6.3.1
FINALASSEMBLY.MODEL4001-9010-24W3-0. ............................. 6-1
6.3.2
PRINTED CIRCUIT ASSY. MODEL 4001,MIC PRE BOARD. CC4000 - 9030-1999-W .......... 6-2
6.3.3 FRONT PANEL,MODEL 4001
- 9070-200600 ................................ 6-3
................... 6.3.3.1 FRONT PANEL,MODEL 4001M GOOSENECK - 9070-2360-00 6-3
6.4 SHIPPING
LIST, MODEL 4002 - KlOO-2361M) .................................... 6-3
.............................. 6.4.1 FINALASSEMBLY, MODEL 4002-9010-2011-00 6-3
6.4.2 PRINTED
CIRCUIT ASSY. MODEL 4002. MIC PRE BOARD, CC4000 - 9030-1999-00 ..........
6-4
6.4.3 PRINTED CIRCUIT ASSY, MODEL 4002. SWITCHBOARD - 9030-4376-00 ...............
6-5
................................
6.45 FRONTPANEL, MODEL 4002 - 9070-2014-00 6-5
................... 6.45.1 FRONT PANEL. MODEL 4002M GOOSENECK - 9070-236143 6-5
....................................
6.5 SHIPPING LIST, MODEL 4003 - KlOO-236360 6-5
..............................
65.1 FINAL ASSEMBLY. MODEL4003 - 9010-201- 66
6.5.2 PRINTED CIRCUIT ASSY, MODEL4003 . MIC PRE BOARD, (3(34000 - 9030-1999-0 .......... 6-6
6.5.3 PRINTED CIRCUITASSY, MODEL 4003. SWITCH BOARD. CC~OOO - 90~3n-00 .......... 6-7
................................
6.5.4 FRONT PANEL. MODEL4003 - 9070-2022M)
6=1
................... 6.5.4.1 FRONT PANEL,MODEL 4003M GOOSENECK - 9070-2364- 6-7
6.5.5 SHIPPING
UST. MODEL4010 - WXL2365-0 ................................
6-8
6.5.6 FINALASSEMBLY, MODEL4010-9010-213&0O
..............................
6-8
.........................
6.5.7 BACK PANEL ASSEMBLY, MODEL 4010-9020-213POO 6-8
6.5.8
PRINTED CIRCUIT ASSEMBLY. MODEL4010. CC4010 - 9030-1974-00 .................
6-9
6.5.9 FRONT PANEL,MODEL4010-9070-1977-
................................ 6-11
6.6 SHIPPING
LIST, MODEL 4020 - KlOO-23684 .................................... 6-11
6.6.1 FINALASSEMBLY. MODEL
4020 - 9010-1927M) .............................. 6-12
6.6.2 BACK PANEL ASSEMBLY. MODEL
4020 - 9020-1926-00
......................... 6-12
6.6.3 PRINTED
CIRCUIT ASSEMBLY. MODEL4020 - 9030-1904-00 ...................... 6-12
APPENDMA ......................................................... A-1
APPENDMB ......................................................... El
NOTES ............................................................. N-1
SECFION7:DIAGRAMS ................................................. 7-1

SECITON 1: INTRODUCTION AND
SPECIFiCATIONS
l.l INTRODUCTION
This IFB System is a one-way Interruptible FeedBacka
wmmunications system (a program mterrupt system)
created especially
to meet the criticalrequirementsof the
television broadcast industry,
as well as other live or
recarded media applications. The system
is composed of
User StationsCentralElectronicsand ControlPanels. A
modular approach
assures the optimum configuration for
each installation. Should svstem exnansion
be desired.
aadindalwmpon~ntsmibe add&
as necessary. A
typical system may consist of the following: up to four
Control Panels, one Central Electronics unit, four User
Stations, and assortedcablingand interconnect
units. The
maximum standard wnfiguration
allows four Control
Panels, three Central Electronics, and twelve User
Stations.
l.2 USERSTATION MODEL 4020
The User Station, a small "belt pack" package, allows the
talent to
receive the audio signals designated by the
Central Electronicsand the Control Stations and may be
worn by talent, such as newscasters, musicians,
sportscasters, etc. Behind-the-scenes pemnnel may
also
findthe IFB feedsusehlfor production coordinationand
wntrol. These may be production assistants, audio boom
operators,stagemonitor mixers,"on stage"producers,etc.
Each belt pack contains the necessary electronics to
orovide a stereo audio siensl to the user.
Two paver
&npliirsrated at In waneachare ca ableof dhgany
TR
set of headohonesor loudsoeakers.
us the IFB can be
conveniently extended to hressing rooks or other off-
camera
areas where communicationsis desirable.
The line inputto thebelt pack
is driven from the Central
Electronics unit. This signal contains the audio
information
as well as the DC voltage ne- topower
the belt pack. Both the left and right signals are wried
on a standardtwo-eonductormicrophone cable. The left
channel is designated
as interruptible,the right channel,
noninterruptible. Separate
jacks are provided for mono
and stereo headphones. Individual left and right volume
controls on the belt pack enable the user to adjust
listening levels for personal wmfort. When mono
headphones
are used, they are fed only the left channel
program
- interruptedprogram audio.
A standard TW Intercom belt pack is fully compatible
with this system and may be used
in place of the Model
4MO User Stationif necessary.
*"IFBm is also known as "IRF, Interrupted Return Feed"
and "foldback".
13 CENTRAL ELECTRONICS MODEL4010
The Central Electronics unit contains all the necessary
wntrolfunctionsand electronicstoprovide theactive
link
between the Control Station and the User Station. It
accepts three program inputs, four microphone inputs
and switch keying signal inputsfrom up
to four Control
Stations.Inaddition, itsuppliescompositeoutputfeedsto
the User Stationbelt
packs, line-level audio feeds to the
Stage Announce (SA) ampuer, relay contacts
for
monitor muting, and interwnnection to the Control
Stations.
Thethreebridgingprogram inputs
are availableona rear-
vanel terminalstrirj. These simals are attenuated and fed
b eight selector-k4tches
that assign any one
of thethree ro
sources tothe lespective front-panel
level wntrofl=tput of
this level control is fed to a
driver amplifier
which sends audii to the noninterrupted
output.
This uninterrupted signal feeds the User Station
right channel line input. For the interrupted channel, the
output of the level control
is fed to an electronic switch
then to a summing amplifier. The summing amplifier
drivesapower outputstagewhich addstheaudiosignalto
a
29 volt DC potential. This audiofeedsthe User Station
left channel line input.
This allows forpmgram interrupt
in
the left channel only. H-er, the right channelmay
be assigned the same s@al as the left channel via an
internal
circuit board santch. The User Station may now
have the interrupt signal in both
ears when using stereo
headphones.
The
SA (Stage Announce)* feature routes any of the
threeprogramsignalstotheSAOutputconnector.
This SA Output is similar to the left channel of a User
Station feed, except
it does not carry dc and it is fully
floatin transformer-balanced. This output may be
amp
hf! ' ed and fed to a stage announce speaker, dressing
mom speaker or some other area The program signal
assigned to the SA output
can be interrupted by a
micro honesignalfrom anyof thecontrolpanels. Should
a pr
ol uction not require a program feed to the stage, the
pmgram level control
may be turned off, in which case
onlythemicrophonesignal is heard.
When the SA function
is used, one or two relays are
activated inside the Central Electronics. Tkeir contacts
appear on the
rear panel terminal strip and can be
connected to a control room monitor amplifier input.
They can be used tomute the local monitor speaker and
prevent feedback when the SA
is in use. In addition,
internal programming jumpers
may be configured to
allowtwo separate areas of speakermuting,e.g., the audio
booth Control Station SA function may be engaged,
muting that local speaker only, and not aaecting the
productioncontrolroom speaker.
Page
1-1

*"SAU is also known as Studio Announce or Studio
Address A frontpanel monitor section allows for
selectablemonitoring of any input or output signal via a
st- phone jack. A volume controland a selectorswitch
sffaonlythe monitor circuits and do not interferewith
otherfunctions.
Insidethe Model4010, a singlelargecircuitboard isused
to mount all electronic wmponents.
A rear-panel
terminal strip provides connections for the program
inputs,
IFB outputs, SA output, and relay contacts.
Connectionbetween the ControlStationsand the Central
Electronics
is made through a 50-pin miaoribbon
connector.
1.4 CONTROLSTATIONMODELS
4001,4802,4003 1 WlM, -2M, 4003M
TheControlStation is designed tomount in a combor
equipment rack. It provides a given number of switch
functions
accordin to the model number. The 4001
offers
IFB 1 thru dB 4, IFE ALL and SA. The4002 has
IFB 1 thm IFB 8, IFB ALL, SA 1 and SA 2. Model 4003
supplk
IFB 1 thru 12, IFB ALL., SA 1, SA 2 and SA 3.
Each model number may be ordered with an "M" suffix.
This refers to a gooseneck micro hone attached to the
panel. Should an existing microp
R one be more suitable
for operations, a connection on the Control Station
microphonepreamp circuit
board may beused to accept a
microphone-level or line-level signal from that
microphone.
Each Control Station is connected to the Central
Ele~troniCS
via a Model 4025 Splitter and 50-conductor
cable with microribbon connectors. An the Control
Stations converge at the 4025 and a single cable then
connectstothe4010.
This configurationallows uptofour
Model 4001 ControlStationstobe connected to a single
CentralElectronicsunit. When
two Model 4010 Central
Electronics units are ud in an eight output
con£iguration, the Model 4002 controls all outputs from
up to four locations. Similarly, three Model 4010's and
twelve outputs
are controlled with a Model 4003, also in
up to four locations. Priority of Control Station switch
signals is pmgrammable and may be
set at the time of
installation. The system may be used without priority
switchingif desired.
1.5 SPLCITERASSEMBLY
MODELS
4022 And 4025A
The Model 4022 features a single male connector
paralleling two female connectors to co~ect
two
controls\stations to thecentralelectronics
TheModel
4WA features a single male connector with
four female mmectors for use with up to four control
stations.
AU connectors are held searelyin place with a
snap-on cover housing.
1.6 SPECIALOFTIONS
A return-send function may be incorporated with some
small modifications. This feature allows the talent at the
User Station
to communicate with the Control Stations
via a closed-circuit bop.
This is done at the User Ststion
by switching in an extra load, usually a lamp, agoas the
feed to that station.
Sensor ckmits in the Central
Electronics
turn on relay-driving circuits, the outputs of
which connect to a 9-pin miniature D mnnector on the
rear panel.
This allows an external relay to be used to
transfer the announar's microphone from the propam
line to a monitor
am litier or intercom in the control
room. Theperson at t
f econtrolstationmay now listento
theannouncerwithout having thesignalgo over the
air.
The splitter assemblies connect the control stationswith
the centralelectronicsria 25-pair cable with microribbon
connectors.
Page1-2

W.1 MODEL4010 CENTRAL ELECTRONICS
FrequencyResponse
30Hz to 16kHz
Nok* Interruptchannel
Non-intemptchannel
TotalHarmonicDistortion
Nominal InputLevel
Miaophone
@ linelevel
Program
-10 dBdinput Z=2k ohms
0 dBu/input Z=2k ohms
Nominal OutputLevel
To
User Stations
To
SA amplifier
-8 dBuhnbalanced, Z=10 ohms
-5 dBu/balanced, 2=800 ohms
Crosstalk
Fmmotherprogram inputs
Between left
& right channels
Mains Power
Consumption
1201240 VAC 50/60 Hz 45
volt-amps
1.7.2 MODELS 4001/4001M,4002/4002M, 4003l4003M
FrequencyResponse
5OHzto16lcHz
Signal-To-NoiseRatio
TotalHarmonicDistortion
Nominal InputLevel
Microphone
Line
123mV p-p
-15 dBu to -5 dBu
InputImpedance
Microphone
Line
Unbalanced input
470 ohms
4.711 ohms
Gain
Nominal OuputLevel
-10 dBu,balanced, Z=UM ohms
Page
1-3

SizeAndWeight
4001/4001M
4003/4003M
Power Supply
PowerRequirements
4001/4001M
4002/4WZM
4003I4003M
14VAC
@ 200 mA
14VAC @ 450 mA
14VAC @ 1.0 amp
SpecificationNotes
* Ref: 05V @ 1 kHz, measure at output terminal terminatedinto 600 ohms @ +10 dBV,20 Hz to 20 kHz, average
respondingmeter.
NOTE: AU product informationand specifications are subjecttochangewithout notice
Page 1-4

SECTION 2: INSTALLATION
2.1 STANDARD INSTALLATION
The Central El&&, Model 4010, is a rack
mounted unit.
me mu of the Model 4010 must be
sopported Mth the provided. htallation
dimensions and outline
dra* for all wmponents
of the
Snies 4000 IFB System are located at the end
of
this manual. TheCentral Electronics,Model 4010,
provides a rear panel terminal
strip for connection to
the Model
4020 User Stations. This is a low-
impedance, line-level signal and may be sent over
standard microphone cable. or telw cable. The User
Station
will work at distances of up to 760 meters
(2500 feet) with #22 cable. With an optional battery
adapter,
this range can be extended to 1500 meters
(5WO feet). Connections for SA Output, SA relays,
and Program Inputs, may be made at
this terminal
strip.
The ControlStations
use eitherindividual or common
localAC power supplies. This allows the interconnect
2.12 CONFIGURATIONS
A standardinterruptedfeedback system can wnsist of
oneModel4010 Central Elwtronics, four Model
4020
User Stations,one Model 4025 SplitterAssembly, and
atleast one Model 4001ControlStation.
As many as
four ControlStationsmay be used. Seefigure 22
2.13 WIRE AND CABLE CONSIDERATIONS
The Control Stations are connected to the Central
Electronics with 50-conductor ribbon cables, Model
4015-MI.
The MI is the cable length in feet. These
cables may be ordered in 5-foot increments from
5
feet to 100 feet. The maximum recomended cable
length
is 100 feet from any Control Station to the
CentralElectronics. The user stations are wmected
to the Central Electrodtes through standard
two-
wnductor-plus-shieldmicrophone cable (e.g. Belden
#9451).
A Smith #5209 spadelug attaches to the
rear-panelterminal strip.
See figure 2-5.
The Stage Announce output is balanced and provides
cables (to
the Central Eledronics) to remain signal-
carrying only, avoiding the chance that a shortedcable
might bring the entire system down This local power
supply provides power for
the electronics and the
switch lamp.
2.1.1 INPUT ELECCRICAL POWER (MAINS)
The standard Model4010 IFB central ekt~onies is
designed to operate on 120 volts ac 10% at either
50or60Hz
Thew-100voltmodelisdesignedto
operateat % volts ac 10%,50 or 60 Hz The 220-
volt model operates on 220 volts ac 10%-50 or 60
Hz The 240-volt model operates on 240 volts ac
10%,50 or 60 Hz The series 4000 control stations
require 1214 volts ac or 16-20 volts de. A
wall
mounted power module with an output of S14volts
ac at
1 amp is provided for this. Any external supply
or transformer capableof supplying
this may be nsul.
TheoptputmanedstoTB2,tenninals3and4onthc
microphonepreamplifier board of the control station.
See figure2-1.
an average
signal level of about -5 dBa Seefigure 26.
The program inputs accept balanced lines with a
signallevel of +4to +8dBu. Seefigure
26.
2.lA CONNECllON TO EMSTING MICRO-
PHONES, 1W" TYPE USER STATIONSAND
OTHER SOURCES
Any series 4000 Control Station can be conneded to
existing microphones
(figures 2-7 and 28) and TW"
type. user stationsA series 4000 Control Station can
use.themicrophoneinanexistitlgTW"typcuser
station. Connedthe UnSwitched Mic output (USM)
from
the TW" user station to the line-level input on
the Control Station.
See figure 29. For connections
toa Model 801Master station, seeAppendixC.
The design of theSeries 4MW) IFB system pedeasy
field installaton and adjustment of
the options and
features
diseussed below. Options/featuns indude
priority controtspeakermutingmnes or areas, return
IFB, expansion of the IFB "ALL" function
andselection of monaural
IFB (same signal-the

22 OPnoNSINSTALLATION (mtfaued)
intmptedprogram-in both em). The rrtllm IFB option
rrpuires
additional equipment (see mtbdow and Appendix
A)tobesuppliedbythecuaomcrortobecustom~
from RTS Systems. The additional equipment
wdd
normally consist of relaysto switch he-level microphone
signalsina soitablejunction box
and a power supplyforthe
relays. The relays
are coatrolled from the Model 4010
Central Electronics unit. In addition.a modi6cationto the
Model 4020 for "IW" system type user station is required
(see text below and Appeadix B).
The Model 4010
IFB Central Electronics, as supplied, has
a priority arraagemnt by which one Contml MW will
override another.
The priority of a Control Station is
aetermined at the Conml Station Bychangiug which plug
(figure 2-10) go- to which jack on the Control Station's
switchboatd, the priority
of that Control Station can be
cbanged See
fipm 2-11 through 2-13. If desind, the
prioritymay bedefeatadby1wnovingU6andU16inthe
Model 4010 Central Electronics. In this mode all Control
Statimhave
equal priority. Thepriorityovenidefunction
worLsonlywiththeIFBkeys. Thestageann-hasno
priority fm.The signals
are merely mixed t0gek-x
should
two ContmlStationsbe keyed sim-usly.
Two
sap of relay mulcts are provided at the back panel of
the 4010 central Elecaonics for area contrd of speaker
muting. These relays work in conjunction with the Stage
Announce (SA)
buaons on the Couhul Sta6m. Tbis
penuits, for example, the audio oparator to use the SA
withoutintermptiag
the director's pmgrammonitor speaker
and viceversa By cutting outthe resistors shown in fiugre
2-14 the relay wilt be deactivated for that station. The
station numbers are dmrmined by their priority selection
(see section 2.2.1, Setting Up Riority). Station 1 has
priority 1, station2 has priority 2, etc. Normally, with all
resistors intact, both relays work when an SA button is
pressed onany controlstation.
RETURN IFB INSTALLATIONS
A~-&fuMionmayk~withgomt
smaU modiiicatious (sea figm 2-15). This feat1118 allows
the talmt
at ~JJC User Station to communicate witb the
Control
Stationsvia a closed-circuit loop. This is done at
the User Station by switching in an exm load, usually a
lamp,acrossthefeedtothatmtion. Asglsmcircuitinthe
Cmtral Electnmica tums on a trsnsistor whose collecbx
terminal appears open ended at a 9-pin miniature D
connectoron
the mar panel. This allowsa relay tobe used
to transfer the anmumdsmiaophone from the program
lhetoadtoramplihainthecontrolrwm. Thepason
at the Control Station may now listen to the anno-
without the signal going overthe air. The outputthrough
the
miniature D wmecbx is capableof operatiaga 12- to
%volt relay
at up to SO mibmpa The relay will uigger
when60~touX)~isdrawnfromtheline.
Thew;actvnlueissetbyR4forchannel1,R33 forcbanuel
2, R62 for
channel 3, and R91 for channel 4. See figwe
2-15. To hi- the hay, switch a 12-volt 90 milliamp
iampacrossthe12voltsintheasastation Note: Odyone
user station
per outputmay be used when the return option
is
used.
22A EXPANDING THE CONTROL STATION'S
ALL FUNCTION
The"IFBW"bumooontheControlstationcausesallof
theIFBbuttonstobeactivated. The"SAnbuaonis~
activattd TomaketheSAw&withthePBWbuttoa
add thefollowing diodes.
MODEL: DIODWS):
40010 D25
4002(M) D56, D61
40030 D100, D105, Dl10
When the switches inside the4010 Central Electronics are
switchedtothe right both I& and right charnels at the user
stationwiUreceive thehtemqtd programfeed. Sea figure
2- 16.
Page 2-2

OLD VERSION NEW VERSION
FROM POWER MODULE
_(
OR ALTERNATE SOURCE
Figure 2-1
Power Connection To Series 4000 Control Stations

The system may be expanded for up to twelve. User Stations, three Central Electronics,three Splitter Ass-
emblies and four Control Stations. See figures 23 and 2-4.
Page 2-4

CONTROL
STATION
mq
STATION
CONlROL
STATION
1x4
SPUmR
MODEL
4025
Fire 2-3
A ConGgumtion-2 System
Page 2-5

Figore 2-4
A Contiguration-3 System

TOUT
41
-0UT3- -OUT
21
-OUT
11
INON
NoN NoN NoN
INT
LO
INT INT LO INT
INT
LO INT INT
LO
INT
SHIELDED MICROPHONE
CABLE
#22
MIN
TO
USER
STAT1
ON
S

TO Si
FROM
PROGRAM
SOURCES
Figure 24
Pmgram Input And SA Output Connections
Page 2-8

OLD VERSION NEW VERSION
Figwe 2-7
Balanced Mic Lavel Input

OLD VERSION NEW VERSION
Page 2-10

APPROX EQUAL TO -1 0 dB
SOURCE SUCH AS "USW
TERMINAL OF
MI USER STATION (ClRCUrf SIDE)
OLD VERSION
Figurn 2-9
Une LeveI Input
NEW MRSION

Figwe 2-10
Control Station Cable Assembly
Page 2-12