Pickering PXI 40-412 User manual

Page (1)
32-CHANNEL DIGITAL I/O MODULE 40-412
pickering
Issue 4.1 January 2016
User Manual
32 Channel Digital I/O Module
With Programmable Threshold
(Model No. 40-412)
pickeringtest.com pickering

Page (II) 32-CHANNEL DIGITAL I/O MODULE 40-412
pickering
© COPYRIGHT (2016) PICKERING INTERFACES. ALL RIGHTS RESERVED.
No part of this publication may be reproduced, transmitted, transcribed, translated or stored in any form, or by
any means without the written permission of Pickering Interfaces.
Technical details contained within this publication are subject to change without notice.
ISO 9001
Reg No. FM38792

Page (III)
32-CHANNEL DIGITAL I/O MODULE 40-412
pickering
Page (III)
REED RELAY MODULE 40-110/115/120/125
pickering
TECHNICAL SUPPORT
For Technical Support please contact Pickering Interfaces either by phone, the website or via e-mail.
WARRANTY
All products manufactured by Pickering Interfaces are warranted against defective materials and workmanship for a period of
three years, excluding programmable power supplies, from the date of delivery to the original purchaser. Any product found to be
defective within this period will, at the discretion of Pickering Interfaces be repaired or replaced.
Products serviced and repaired outside of the warranty period are warranted for ninety days.
Extended warranty and service are available. Please contact Pickering Interfaces by phone, the website or via e-mail.
ENVIRONMENTAL POLICY
Pickering Interfaces operates under an environmental management system similar to ISO 14001.
Pickering Interfaces strives to full all relevant environmental laws and regulations and reduce wastes and releases to the
environment. Pickering Interfaces aims to design and operate products in a way that protects the environment and the health and
safety of its employees, customers and the public. Pickering Interfaces endeavours to develop and manufacture products that can
be produced, distributed, used and recycled, or disposed of, in a safe and environmentally friendly manner.
Worldwide Technical Support and Product Information
pickeringtest.com
Germany
Tel: [phone]
E-mail: [email protected]
Sweden
Tel: [phone]
E-mail: [email protected]
USA
Tel: (West) [phone]
Tel: (East) [phone]
E-mail: [email protected]
Czech Republic
Tel: [phone]
E-mail: [email protected]
France
Tel [phone]
E-mail [email protected]
Pickering Interfaces Headquarters
Stephenson Road Clacton-on-Sea CO15 4NL United Kingdom
Tel: [phone]
E-Mail: [email protected]
China
Tel: [phone]
E-mail: [email protected]

Page (IV) 32-CHANNEL DIGITAL I/O MODULE 40-412
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MEANING / DESCRIPTION SYMBOL SIGNIFICATION / DESCRIPTION
PROTECTIVE EARTH (GROUND)
To identify any terminal which is intended
for connection to an external conductor for
protection against electric shock in case of
a fault, or the terminal of a protective earth
(ground) electrode.
MISE À LA TERRE
Pour identier les ornes destines  tre
raccordes  un conducteur eterne de
rotection contre les chocs lectriues en cas
de dfaut disolement ou our maruer la
orne de mise  la terre
DANGEROUS VOLTAGE
To indicate hazards arising from dangerous
voltages.
TENSION DANGEREUSE
Pour indiuer les dangers dcoulant des
tensions dangereuses.
WARNING / CAUTION
An appropriate safety instruction should
e followed or caution to a otential haard
exists.
Refer to the relevent instructions detailed
within the product manual.
AVERTISSEMENT - ATTENTION
es consignes de scurit arories
doivent tre suivies n cas de danger
otentiel eistant rendre des rcautions
onsulter les instructions dtailles dans le
manuel du produit.
HEAVY
If this roduct is heav reference should e
made to the safety instructions for provisions
of lifting and moving.
CHARGE LOURDE
Si ce produit est lourd il convient de se
rfrer au consignes de scurit our les
disositions de levage et de dlacement
STATIC SENSITIVE
To indicate that static sensitive devices are
resent and handling recautions should e
followed.
SENSIBILITÉ STATIQUE
Pour indiuer ue des aareils sensiles
statiues sont rsents et les rcautions de
maniulation doivent tre suivies
!
kg
he following safet smols ma e used on the
product and throughout the product documentation.
es smoles de scurit suivants euvent tre
utiliss sur le roduit et dans lensemle de la
documentation produit.
SAFETY SYMBOLS SYMBOLES DE SÉCURITÉ
PRODUCT SAFETY LA SÉCURITÉ DES PRODUITS

Page (V)
32-CHANNEL DIGITAL I/O MODULE 40-412
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Copyright Statement ...................................................................II
Technical Support and Warranty ................................................III
Product Safety .............................................................................IV
Contents (this page) ....................................................................V
Warnings and Cautions ..............................................................VII
Section 1
Technical Specication ...............................................................1.1
Section 2
Technical Description .................................................................2.1
Functional Description .......................................................2.1
Guidance on Using The 40-412 .........................................2.2
Section 3
Installation ....................................................................................3.1
Pre Operation Checks ........................................................3.1
Hardware Installation .........................................................3.1
Software Installation ..........................................................3.3
Testing Operation ...............................................................3.4
Section 4
Programming Guide ....................................................................4.1
Programming Options for PXI Cards ................................4.1
40-412 Digital Input-Output Sub-Units ..............................4.3
Using The Direct I/O Driver or VISA Driver ......................4.5
Input Threshold Voltage Bit Patterns ...............................4.8
Section 5
Connector Information ................................................................5.1
Section 6
Troubleshooting ..........................................................................6.1
Section 7
Maintenance Information ............................................................7.1
Verication Procedure .......................................................7.2
Verication Test Results ....................................................7.5
Input/Output Look-Up Tables - 40-412-001 .......................7.6
Input/Output Look-Up Tables - 40-412-111 .......................7.8
CONTENTS

Page (VI) 32-CHANNEL DIGITAL I/O MODULE 40-412
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Page (VII)
32-CHANNEL DIGITAL I/O MODULE 40-412
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WARNINGS
AND CAUTIONS
AVERTISSEMENTS
ET PRÉCAUTIONS
WARNING
HAZARDOUS ENVIRONMENTS SYMBOL AVERTISSEMENT ENVIRONNEMENTS DANGEREUX
his roduct is not secicall designed for
use in haardous environments for eamle in
elosive atmosheres If the roduct is to e
used in haardous environments we recommend
that the user ensures suitale rotective
measures are taken
e roduit nest sciuement as conu our
un usage dans des environnements dangereu
ar eemle en atmoshres elosives i le
roduit doit tre utilis dans des environnements
dangereu nous recommandons  lutilisateur
de sassurer ue des mesures de rotection
arories soient rises
!
WARNING
DANGER OF ELECTRIC SHOCK SYMBOL AVERTISSEMENT DANGER DE CHOC ELECTRIQUE
his module ma contain haardous voltages
efore removing the module from the rack
remove all sulies and disconnect user I
signals
nused slots in the PII chassis are
oulated with lanking lates to revent access
to user I signals that ma e resent lanking
anels are availale to order from Pickering in a
variet of slot widths If the roduct is not used
in this manner for eamle  using an etender
card then additional care must e taken to avoid
contact with eosed signals
e module eut contenir des tensions
dangereuses vant de retirer le module de la
aie enlever toutes les fournitures et dconnecter
les signau d utilisateur
es slots non utiliss dans le chssis PII
sont eules doturateurs our emcher
laccs au signau d utilisateur ui euvent
tre rsents es oturateurs sont disoniles
sur commande che Pickering dans une
varit de largeur de fente i le roduit est
utilis sans oturateur ar eemle en utilisant
une carte detension alors des rcautions
sulmentaires doivent tre rises our viter
tout contact avec les signau eoss
CAUTION - HANDLING OF
ELECTROSTATIC-SENSITIVE
SEMICONDUCTOR DEVICES
SYMBOL
ATTENTION - MANIPULATION DES
APPAREILS SENSIBLES
ELECTROSTATIQUES
ertain semiconductor devices used in this
euiment are liale to damage due to static
voltage serve the following recautions when
handling these devices in their unterminated
state or suassemlies containing these
devices
 Persons removing suassemlies from
euiment using these devices must e
earthed  a wrist stra and a resistor at the
oint rovided on the euiment
 oldering irons used during the reair
oerations must e low voltage tes with
earthed tis and isolated from the mains
voltage  a doule insulated transformer
 uter clothing worn must e unale to generate
static charges
 Printed ircuit oards Ps tted with these
devices must e stored and transorted in
antistatic ags
ertains aareils semiconducteurs utiliss
dans cet uiement sont suscetiles dtre
endommager en raison de la tension statiue
esecte les rcautions suivantes lorsue
vous maniule ces aareils dans leur tat
non termin ou sousensemles contenant ces
aareils 
 es ersonnes dmontant artiellement
luiement  laide de ces aareils
doivent tre mises  la terre ar racelet
antistatiue et une rsistance au oint rvu
sur luiement
 es fers  souder utiliss endant les
orations de raration doivent tre de te
asse tension avec des outs relis  la terre
et isols  artir de la tension du rseau ar un
transformateur  doule isolation
 es vtements eternes ne doivent as
gnrer des charges lectrostatiues
 es cartes de circuits imrims P uies
de ces aareils doivent tre entreoses et
transortes dans des sacs antistatiues

Page (VIII) 32-CHANNEL DIGITAL I/O MODULE 40-412
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SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS CONSIGNES DE SÉCURITÉ
All cleaning and servicing requires the equipment to be
isolated and disconnected from the power source and
user I/O signals (refer to the Maintenance Section).
 roriate manual handling rocedures should e
followed as dictated by the weight of the individual
module or the combined weight of the modules &
chassis.
 hould a fault occur with the module or chassis
immediately isolate and disconnect the incoming
power to the chassis and the user I/O signals.
 nsure the euiment is installed oerated and
maintained by trained and authorised personnel.
 or suital euied roducts in the event of an
emergency press the red “emergency stop” button
situated on the front of the unit.
Les travaux de nettoyage et de réparation nécessitent
que l’équipement soit isolé et déconnecté de la source
dalimentation et des signau d utilisateur voir la
section ntretien
 es rocdures de maniulation manuelle arories
doivent être suivies en fonction du poids du module
seul ou le poids combiné des modules et du châssis.
 n cas de dfaut avec le module ou le chssis isoler
immédiatement et débrancher l’alimentation entrant au
chssis et les signau d utilisateur
 assurer ue le matriel est install utilis et entretenu
par du personnel formé et autorisé.
 Pour les roduits convenalement uis en cas d
urgence aue sur le outon rouge arrt durgence
situé sur l’avant de l’unité.
CAUTION
PRODUCT DOCUMENTATION SYMBOL ATTENTION DOCUMENTATION PRODUIT
uital ualied  trained users should ensure
that the accompanying documentation is fully
read and understood before attempting to install
or operate the product.
es utilisateurs ualis et forms doivent veiller
à ce que la documentation soit entièrement lue
et comprise avant l’installation ou l’utilisation du
produit.
!

Page 1.1
32-CHANNEL DIGITAL I/O MODULE 40-412
pickering SECTION 1 - TECHNICAL SPECIFICATION
SECTION 1 - TECHNICAL SPECIFICATION
40-412
32 Channel Digital I/O - Programmable Threshold
Functional Diagram 40-412-001 32-Channel Digital I/O
Module With Serial Input Acquisition
The 40-412 is a 32-channel Digital I/O module with high output voltage and
current capability and a dual variable threshold input.
Each of the 32 channel outputs can be used to drive the output high or low
using a high current capacity drive capable of sourcing 0.4A from the high side
or 0.5A sink on the low side for each channel. Accidental operation of both
the high and low side driver is prevented by the supplied driver. Each output
is fully protected against over-voltage, over-current and thermal overload,
ensuring robust and reliable operation in the toughest test environments.
For high side voltage driving the high side voltage source is supplied from an
external voltage source, permitting the module to drive high capacity loads
without impacting the PXI chassis power supply. For low side driving the
external source can be left unconnected, permitting the module to be used for
applications served by open collector or open drain drivers.
The built in protection systems allow the module to drive relays without the
use of flyback diodes if required since an overvoltage clamp is included.
●32-Channel Input
●Dual Programmable Voltage Threshold, 0.3 to 50V
●Serial or Parallel Acquisition Versions
●High Input Voltage Tolerance
●32-Channel Output
●High Side or Low Side Driving
●0.5A Low Side Sink Capability
●0.4A High Side Source Capability
●Fully Protected Outputs
●High Side External Voltage Input
●VISA, IVI & Kernel Drivers Supplied for
Windows XP/Vista/7/8
●Supported by PXI or LXI Chassis
●3 Year Warranty
PCI
INTERFACE
PXI
BUS
Vext
1
2
32
1
2
32
Digital Outputs
Digital Inputs
High Side
Driver
Low Side
Driver
Vext
GND
En
En
Output 1
Output 2
Output 32
32
Attenuator
MUX
1
Dual
Threshold
Detector
Ref1
Ref2
The 32 input channels can be read back through
the PXI interface by comparing the voltage to two
threshold voltages that can be set between 0.3
and 50V by the user. The thresholds can be set
with 12.5mV resolution, permitting the user to test
the input against the system test limits that define
a logic low or logic high. The 40-412 is supplied
with one of two different read back methods. The
40-412-001 uses a series acquisition to capture
the input status using a single set of comparators.
The driver includes a facility to capture the input
status of all 32 channels from a single command.
The 40-412-111 uses 32 sets of comparators to
synchronously capture all 32 input states and then
reads the status in a single operation.
Each input can withstand the accidental
application of high external voltage to greater than
100V. The inputs can be user connected to the
driver outputs without risk of damage, allowing
the module to be configured for operation as 32
channels of independent input and output or as
32 channels of configurable I/O.
The 40-412 provides it’s I/O on an easy to use 78-
pin D-type connector which is supported by a full
range of connector accessories.

Page 1.2 32-CHANNEL DIGITAL I/O MODULE 40-412
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SECTION 1 - TECHNICAL SPECIFICATION
Product Order Codes
32-Channel Digital I/O Module - Serial
Input Acquisition, Programmable Threshold 40-412-001
32-Channel Digital I/O Module - Parallel
Input Acquisition, Programmable Threshold 40-412-111
Power Requirements from PXI Power Supply
+3.3V +5V +12V -12V
0V 0.1A 0.05A 0.05A
Output Specification
No. of Output Channels: 32
Output States: Driven high, driven low or off.
Low Side Driver Output
Resistance: 0.6at 0.5A
High Side Driver Output
Voltage: Vext less 1.5V at 0.4A
Maximum Current: 0.5A for Low Side drivers,
0.4A for High Side drivers,
10A module total (40-412-001),
8A module total (40-412-111),
Maximum Voltage: +50V
Output Protection: Current limited, overvoltage limited,
thermal protection. Overvoltage
limit can be used to limit back emf
generated from inductive loads
such as relay coils.
Vext: User supplied +5V to +50V, applied
to multiple pins of user connector,
relative to front panel ground.
Input Specification
No. of Input Channels: 32
Logic Threshold: Compares selected input voltage
against two reference voltages,
each of which can be set from
0.3 to 50V with 12.5mV setting
resolution.
40-412-001 uses serial
acquisition
40-412-111 uses faster parallel
acquisition from a common pair
of threshold voltages.
Settling Time (40-412-001): 50µs following a state change or
channel selection.
Typical read back time for all 32
states 1.3ms.
Settling Time (40-412-111): 5µs following a state change.
Read back time for all 32 states
50µs typical.
Channel Selection: Single channel selection or
automated sequential access to
all 32 channels.
Maximum Input Voltage: 100V
Input Impedance: 1M
PCI
INTERFACE
PXI
BUS
Vext
1
2
32
1
2
32
Digital Outputs
Digital Inputs
High Side
Driver
Low Side
Driver
Vext
GND
En
En
Output 1
Output 2
Output 32
32-Channel
Attenuator
32-Channel
Dual
Threshold
Detector
Ref1
Ref2
Functional Diagram 40-412-111 32-Channel Digital I/O
Module With Parallel Input Acquisition
PXI Characteristics
Backplane connection: 33MHz, 32-bit.
Mechanical: 3U, 1-slot.
Weight: 180g
3D models for all versions in a
variety of popular file formats
are available on request.
Front Panel I/O: 78 pin male D-type.connector
Mating Connectors & Cabling
For connection accessories for the 40-412 please refer to
the 90-006D 78-way D-type Connector Accessories data
sheet where a complete list and documentation can be
found for accessories, or refer to the Connection Solutions
catalog.

Page 1.3
32-CHANNEL DIGITAL I/O MODULE 40-412
pickering SECTION 1 - TECHNICAL SPECIFICATION
Programming
Pickering provide kernel, IVI and VISA (NI and Agilent) drivers
which are compatible with all Microsoft supported versions
of Windows and popular older versions. The VISA driver is
also compatible with Real-Time Operating Systems such as
LabVIEW RT. For other RTOS support contact Pickering.
These drivers may be used with a variety of programming
environments and applications including:
National Instruments products (LabVIEW, LabWindows/
CVI, Switch Executive, MAX, TestStand, etc.)
Microsoft Visual Studio products (Visual Basic, Visual C+)
Agilent VEE Mathworks Matlab
Marvin ATE Easy MTQ Testsolutions Tecap
Tecap Switching
Drivers for popular Linux distributions are available, other
environments are also supported, please contact Pickering
with specific enquiries.
Operating/Storage Conditions
Operating Conditions
Operating Temperature:
Humidity:
Altitude:
0°C to +55°C
Up to 90% non-condensing
5000m
Storage and Transport Conditions
Storage Temperature:
Humidity:
Altitude:
-20°C to +75°C
Up to 90% non-condensing
15000m
PXI & LXI Chassis Compatibility
Compatible with all chassis conforming to the 3U PXI and
3U cPCI specification. Compatible with Legacy and Hybrid
peripheral slots in a 3U PXI Express chassis.
Compatible with Pickering Interfaces LXI Modular Chassis.
For information on driving your switching solution in an LXI
environment refer to the LXI Product Catalog.
PXI & CompactPCI Compliance
The module is compliant with the PXI Specification 2.2. Local
Bus, Trigger Bus and Star Trigger are not implemented.
Uses 33MHz 32-bit backplane interface.
Safety & CE Compliance
All modules are fully CE compliant and meet applicable EU
directives: Low-voltage safety EN61010-1:2001,
EMC Immunity EN61000-6-1:2001, Emissions EN55011:1998.
Please refer to the 200 page
Pickering Interfaces “Connection
Solutions” catalog for the full list
of connector/cabling options,
including drawings, photos and
specifications. Available in either
print or as a download.
Alternatively our web site has
dynamically linked connector/
cabling options, including pricing,
for all Pickering PXI modules.
Ever wondered what PXI is all
about?
Pickering Interfaces’ “PXImate”
explains the basics of PXI
and provides useful data for
engineers working on switch
based test systems.
The PXImate is available free
on request from the Pickering
website.
“The Big PXI Catalog” gives
full details of Pickering’s entire
range of PXI switch modules,
instrument modules and
support products.
At over 500 pages, the Big
PXI Catalog is available on
request or can be downloaded
from the Pickering website.
The “PXI
Module Map”
- a simple fold-
out selection
guide to all
Pickering’s
1000+ PXI
Modules.
The “Cables &
Connectors
Map” - outlines
the cable and
connector
options
available
for all PXI
Modules.
Latest Details
Please refer to our Web Site for Latest Product Details.
www.pickeringtest.com

Page 1.4 32-CHANNEL DIGITAL I/O MODULE 40-412
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SECTION 1 - TECHNICAL SPECIFICATION
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Page 2.1
32-CHANNEL DIGITAL I/O MODULE 40-412
pickering SECTION 2 - TECHNICAL DESCRIPTION
SECTION 2 - TECHNICAL DESCRIPTION
FUNCTIONAL DESCRIPTION
A functional block diagram is provided in Figure 2.1. The Module is powered by the +5V, +12V and -12V supplies
from the PXI backplane via Compact PCI connector J1. The interface to the user’s equipment is via the front panel
mounted 78-way D-type connector, J2.
The module’s 32 channel output section comprises High Side and Low Side drivers U26 to U89 and Shift Registers
U18 to U25. The shift registers control the output drivers and are supplied with serial data from the PCI Bridge, U1,
via the control logic. Each output can be switched to either sink current to the GND terminal via a Low Side driver
device, or source current from the Vext terminal via a High Side driver device.
or the  version with serial inut acuisition the modules  inut channels are rst fed through an
attenuator circuit, then multiplexed to a single analog stream using U13 and U14. A programmable threshold detector
circuit, U15 and U16, converts the analog signal into a digital data stream determined by the high and low thresholds
programmed by the user. The input data is then read by the PCI Bridge via the control logic.
or the  version with arallel inut acuisition the inut circuitr is tted to a daughter oard which is
mounted on to of the mother oard he modules  inut channels are rst fed through an attenuator circuit then
comparator devices U17 to U32 determine whether each input signal is greater than the two thresholds programmed
by the user. The resultant 64 data bits are latched by U33 to U40 and read by the PCI Bridge.
he PI ridge is congured  P  the module conguration is stored in P 
78-WAY D-TYPE
CONNECTOR
J2
MODULE
CONFIGURATION
U11
PCI
BRIDGE
FPGA
U1
PCI BRIDGE
CONFIGURATION
U2
TERMINATING
RESISTORS
R1 TO R12
COMPACT PCI
BUS
CONNECTOR
J1
+5V
0V
HIGH SIDE &
LOW SIDE
DRIVERS
U26 to U89
SHIFT
REGISTERS
U18 to U25
CONTROL
LOGIC
U2 to U10
+12V
-12V
VOLTAGE
REGULATOR
U17
+2.5V
INPUT
ATTENUATOR
R50 to R145
ANALOG
MUX
U13 & U14
PROGRAMMABLE
THRESHOLD
DETECTOR
U15 & U16
Vext
GND
INPUT
ATTENUATOR
R50 to R145
COMPARATORS
U17 & U32
DATA
LATCHES
U33 & U40
40-412-111 PARALLEL INPUT ACQUISITION - DAUGHTER BOARD
40-412-001 SERIAL INPUT ACQUISITION - MOTHER BOARD
Figure 2.1 - Digital I/O Module 40-412: Functional Block Diagram

Page 2.2 32-CHANNEL DIGITAL I/O MODULE 40-412
pickering
SECTION 2 - TECHNICAL DESCRIPTION
GUIDANCE ON USING THE 40-412
Output Drivers
The 40-412 provides two output driver types on each of the 32 channels:
• High Side Driver. The high side driver allows the user to set the output voltage actively high to an externally
supplied voltage source. The external voltage source can be between +5V and +50V relative to ground.
• Low side driver. The low side driver actively connects the output to ground.
The software driver inhibits both the high and low side drivers being turned on at the same time.
Each driver output is fully protected from thermal, voltage or current overloads. However, continuous operation at
voltages beyond the stated ratings may cause damage.
Each driver contains overvoltage protection that can be used to protect the driver from inductive back EMF spikes
generated when turning coil currents off. Using this protection to manage the back EMF will not cause damage to
the driver, however the sudden current change can generate EMC events. Pickering Interfaces recommends that
where ossile the user should rovision local measures such as a wheel diode to limit the ack  current
ow through the cales
he user can select oth drivers to e inactive to rovide a tristate oen outut voltage
The external voltage source needs to be applied only if the high side driver is required to be used, it can grounded
or left unconnected if the high side driver is not required to be used.
Driving Inductive Loads
Users can use the high/low side drivers to drive highly inductive loads such as the coils of relays or solenoids, the
protection circuits in the 40-412 will ensure the drivers are not easily damaged. However, it is recommended that
precautions are taken to manage the resulting EMC issues that might arise.
High Side
Driver
Vext
FP_GND
En
40-412
GND
D1
D3
D2
Output
External Voltage
Figure 2.2 - Using the 40-412: Driving an inductive load with a High Side Driver
When using the high side driver, on driver closure, current will build in the coil until it reaches a steady state. When
the driver is opened, the energy in the inductor will need to be discharged. This discharge can be through the diode
inside the   igure   this will not damage the  owever the discharge ma cause a ground
sike that ma result in  emission e recommend that where ossile a local diode is tted  igure 
which will reduce the ground current owing and reduce the  emissions

Page 2.3
32-CHANNEL DIGITAL I/O MODULE 40-412
pickering SECTION 2 - TECHNICAL DESCRIPTION
When using the low side driver a similar effect occurs when the driver is opened. The inductive energy stored is
discharged  the voltage on the  outut ecoming ositive and a clam diode  igure  acting to
rotect the driver It is recommended that the user ts a wheel diode  igure  to discharge the inductive
energ If a wheel diode is not tted the  will clam the outut at a voltage etween  and  relative
to the front panel ground, the voltage being dependent upon the breakdown voltage of D1, Figure 2.3.
Driving Capacitive Loads
The 40-412 can be used to drive capacitive loads. When the driver is closed, the current limit protection circuit will
limit the current owing into the caacitive load ontinuous raid connection and disconnection to a caacitive load
may result in the thermal protection circuits preventing further operation. If this occurs, simply allow the 40-412 to
cool down, after which normal operation will resume.
Vext Connection
When using the high side drivers, Vext is required to provide the current to the 40-412 output circuits. The Vext
connection is made using multiple pins on the D-type connector. It is strongly recommended that if high load
currents are expected, then all the available pins are used to spread the current load in order to avoid damaging the
connector he connections to et are internall linked together in the  so secic ins are not reuired to
be used for a particular bank of drivers. To maximize connector life we suggest using 5 Amps per pin or less. Users
should not al negative voltages relative to ground to et or al voltages greater than 
FP_GND Connection
When using the low side drivers, FP_GND is required to sink the current from the 40-412 output circuits. The FP_
GND connection is made using multiple pins on the D-type connector. It is strongly recommended that if high load
currents are expected, then all the available pins are used to spread the current load in order to avoid damaging
the connector he connections to P are internall linked together in the  so secic ins are not
required to be used for a particular bank of drivers. To maximize connector life we suggest using 5 Amps per pin
or less. Spare FP_GND Connections can be used for the purpose of screening or shielding in cable assemblies or
connector blocks
Using High and Low Side Drivers
The user can select on an individual channel basis whether a high side or low side driver is used. In Figure 2.2, D3
prevents the discharge of energy into Vext when the low side driver is operated.
Low Side
Driver
Vext
FP_GND
En
40-412
GND
D1
D2
Output
C
Figure 2.3 - Using the 40-412: Driving an inductive load with a Low Side Driver

Page 2.4 32-CHANNEL DIGITAL I/O MODULE 40-412
pickering
SECTION 2 - TECHNICAL DESCRIPTION
INPUT CONNECTION
Each of the 32 channels can be compared to two voltage references levels. The reference level is set by a 12 bit
digital word with full scale corresponding to 50V and zero to 0V. In the case of the 40-412-001, the user selects the
channel to be monitored by setting the input MUX to the required channel. The use of two threshold levels makes
it easier for a user to determine the status of the input. For example, a typical application might be in a system
operating from 28V supplies where the state needs to be established using a criteria equivalent to 20% of the supply:
• irst threshold is set to   of  a low condition will indicate the state is low
• econd threshold is set to   of  to conrm a high state
• Intermediate conditions can e detected since the inut is aove the rst threshold ut elow the second
threshold.
Since the state is read at the same instant against each threshold, measurements are not confused by dynamically
changing voltages.
With the 40-412-001, all 32 channels can be monitored by checking each input in turn, but the user should be aware
that with dynamically changing signals these measurements are not made at the same instant in time. A command
is also available to extract the state of all 32 channels by automated sequential sampling.
As the 40-412-111 has parallel input sampling, all inputs are compared to the programmable voltage reference levels
at the same time.
Vext and GND Break Detection
Some applications require a test to ensure that an input connection is not broken. For a connection that is set be at
et the  inut imedance to the inut will drag the voltage down to ground in the event of a reak o detect a
break to a signal that is supposed to be at ground potential this will not give a good indication. However, if the input
is connected  an eternal  resistor to et then in the event that there is a reak the signal will go to  of
Vext and the dual detection thresholds can be set to detect this.
Example:
Vext is 28V, the thresholds are set at 4V and 24V. The input will appear to be in the mid voltage state of 14V,
greater than 4V but less than 24V and the signal break can be detected.
Settling Time 40-412-001
The input monitoring is designed for operation with static or relatively infrequently changing inputs, such as those
associated with relay coils, alarms and visual indicators.
he inut circuits ehiit an inut time constant of aroimatel s measured as an  time constant llowing
  time constants is sufcient for a changed state to e accuratel returned or the  a state of change
at a rate of greater than 10kHz may result in an intermediate condition being regularly returned. No damage can
result from operation above 10kHz.
Settling Time 40-412-111
The 40-412-111 uses a synchronous acquisition process that samples all the 32 states at the same time, eliminating
the settling time constants associated with the switching system. The 40-412-111 is more suited to applications
where states may be changing and users wish the states to be sampled at the same instant in time. The input
states are captured and then read back to the PXI control system through a serial process. The read back speed
is dependent on the speed of the controller, modern controllers will read back the 32 states in between about 10µs
and 30µs.
CONNECTING INPUT AND OUTPUT
It is permitted for a user to connect an input and output channel together using external wiring (for example in a
connector lock In this wa the inut can e used to check that the outut connection is eing correctl driven
It should e noted that if the outut is set tristate oth drivers off the inut imedance to the inut channel will drag
the output voltage to a low state in the absence of any external source of voltage or current.
Note that when the inputs and outputs are wired together by the user and both the high side and low side drivers are
off, the input/output state will be asserted low. This is due to the impedance of the input connection.

Page 3.1
32-CHANNEL DIGITAL I/O MODULE 40-412
pickering SECTION 3 - INSTALLATION
!
!
kg
Refer to the Warnings and Cautions
at the front of this manual
Reportez-vous aux Avertissements et
Mises en garde au début du manuel.
Modular products require installation in a suitable
PXI/LXI chassis. The module is designed for indoor
use only.
Les produits modulaires nécessitent une installation
dans un châssis PXI/LXI approprié. Le module est
conçu pour une utilisation en intérieur.
PREOPERATION CHECKS
(UNPACKING)
CONTRÔLES AVANT UTILISATION
(DÉBALLAGE)
1. Check the module for transport damage and report
any damage immediately to Pickering Interfaces.
Do not attempt to install the product if any damage
is evident.
2. Position the chassis relative to any other equipment
the module(s) will connect with. Ensure the chassis
is not connected to the electrical supply.
3. Ensure that the designated area for the chassis
containing the module is of at and solid construction
to withstand and support the combined weight of
the module and chassis.
 rie ue le module nest as t endommag
endant le transort et signale immdiatement tout
dommage  Pickering Interfaces essae as
dinstaller le matriel si des dgts sont vidents
 Place le chssis contenant le module ar raort
à tout autre équipement qui est censé se connecter
avec ssurevous ue le chssis nest as
connect  lalimentation lectriue
 ssurevous ue la one dsigne our le chssis
contenant le module est de construction plate et
solide an de rsister et suorter le oids du
module et le châssis.
HARDWARE INSTALLATION
ELECTRICAL CONNECTION
(CHASSIS)
INSTALLATION DU MATÉRIEL
RACCORDEMENT ÉLECTRIQUE
(CHASSIS)
1. The chassis containing the module must be
electrically installed in accordance with local
regional electrical codes  a ualied engineer
2. The chassis containing the module must be
grounded.
1. Le châssis contenant le module doit être installé
électriquement en conformité aux normes en
vigueur ar un ingnieur uali
2. Le châssis contenant le module doit être mis
à la terre.
Electrostatic discharge can damage the components
on the module. To avoid such damage in handling the
board refer to page VII.
Ensure that there is adequate ventilation.
Les décharges électrostatiques peuvent endommager
les composants du module. Pour éviter de tels
dommages en manipulant la carte se reporter
à la Page VII.
ssurevous ue la ventilation est aduate
SECTION 3
INSTALLATION
SECTION 3
INSTALLATION
!
kg
!

Page 3.2 32-CHANNEL DIGITAL I/O MODULE 40-412
pickering
SECTION 3 - INSTALLATION
Page 3.2
SECTION 3 - INSTALLATION pickering
REED RELAY MODULE 40-110/115/120/125
The module should be installed in accordance with
the following procedure:
1. Ensure that the system is turned OFF but still
connected to mains so that it remains grounded.
2. Choose an appropriate slot in the rack.
3. Remove the blanking plate for the chosen slot.
4. Ensure that the injector/ejector handle is in its
downward position. Align the module with the card
guides on the top and bottom of the slot.
Do not raise the injector/ejector handle whilst
inserting the module as the module will not insert
properly.
5. Hold the handle whilst slowly sliding the module
into the card guides until the handle catches on the
injector/ejector rail (refer to Figure 3.1).
6. Raise the injector/ejector handle until the module
rml seats into the acklane he front anel of
the module should e ush with the front anel of
the chassis.
7. Secure the front panel of the module using both
screws to the chassis front panel mounting rails.
8. In a system employing a remote control interface
to connect an external controller to a PXI chassis
or to link multiple chassis, power-up the system as
follows:
a. For a system comprising an external controller
and one chassis, power up the chassis before
powering up the external controller.
b. For a system comprising more than one chassis,
turn ON the last chassis in the system followed
 the enultimate etc and nall turn  the
external controller or chassis containing the
system controller.
9. For Pickering Interfaces modular LXI installation
there is no reuirement to use an articular ower
u seuence
e module doit tre install conformment 
la rocdure suivante
 ssurevous ue le sstme est teint mais uil
reste connect au rseau lectriue an uil reste
reli  la terre
 hoisisse un emlacement arori dans la aie
 etire la laue doturation de lemlacement
choisi.
 ssurevous ue la oigne insertion  ection
est dans sa position vers le bas. Alignez le module
avec les guides de la carte sur le haut et le bas de
la fente.
e as lever la oigne insertion  ection tout en
insrant le module sinon celuici ne sera as insr
correctement.
 ene la oigne tout en glissant lentement le
module dans les guides de la carte usu la rise
des oignes sur le rail insertion  ection voir la
Figure 3.1).
 eleve la oigne insertion  ection usu ce
ue le module se lace fermement dans le fond
de anier e anneau avant du module doit tre
align avec le anneau avant du chssis
7. Fixez le panneau avant du module en utilisant les
deux vis du panneau avant du rail de montage du
chssis
 ans un sstme utilisant une interface de
commande  distance our connecter un
contrleur eterne  un chssis PI ou our relier
lusieurs chssis faites la mise sous tension du
sstme comme suit
a Pour un sstme comrenant un contrleur
eterne et un chssis mette le chssis avant
dallumer le contrleur eterne
 Pour un sstme comrenant lus dun chssis
allume le dernier chssis dans le sstme
suivi ar lavantdernier etc et enn active le
contrleur ou le chssis eterne contenant le
contrleur sstme
 Pour linstallation modulaire I de Pickering
Interfaces il nest as ncessaire dutiliser une
suence de mise sous tension articulire

Page 3.3
32-CHANNEL DIGITAL I/O MODULE 40-412
pickering SECTION 3 - INSTALLATION
SECTION 3 - INSTALLATION
Page 3.3
pickering
REED RELAY MODULE 40-110/115/120/125
Figure 3.1 - Installing the module
into a PXI/cPCI/LXI Chassis
SOFTWARE INSTALLATION INSTALLATION DU LOGICIEL
First install the appropriate Pickering PXI switch
card drivers by running the installer program
Setup.exe (provided in a compressed zip
le either from the  sulied or 
downloading the latest version from our website
pickeringtest.com - the recommended method.
etu is accomanied  a eade le containing
additional installation information. A single installation
covers all cards in the System 40, System 45 and
System 50 ranges.
When installation completes, the installed
drivers eade le is offered for disla It can
also be displayed later using a shortcut on the
Programs>>Pickering menu.
If you are not a LabVIEW user you should choose the
“full” version, and once that has been installed run the
LabVIEW Runtime Engine installer via the shortcut
on the Programs>>Pickering menu. In the absence of
aI the untime ngine is reuired to suort
the Pickering Test Panels application.
aord installe les ilotes de la carte de
commutation PI de Pickering en ecutant le
rogramme dinstallation etuee fourni dans un
chier comress i soit  artir du  fourni
ou en tlchargeant la dernire version sur notre site
pickeringtest.com  la mthode recommande
etu est accomagn dun chier isemoi
contenant des informations sulmentaires sur
linstallation ne seule installation our toutes les
cartes dans les gammes stme  stme  et
stme 
ne fois linstallation termine le ilote install ise
moi est offert  lafchage Il eut galement tre
afch ultrieurement  laide dun raccourci dans le
menu Programs >> Pickering.
i vous ntes as un utilisateur de aI vous
deve choisir la version comlte et une fois uelle
a t installe ancer le rogramme dinstallation
LabVIEW Runtime Engine via le raccourci dans
le menu Programs  Pickering n lasence de
aI le untime ngine est ncessaire our
suorter lalication est Panels de Pickering
PXI / LXI Chassis
(Châssis PXI/LXI)
(Module PXI)
( Poignée Insertion/Ejection)
(Insertion/Ejection Rail)
(Figure 3.1 Installation du module
dans un châssis PXI/cPCI/LXI)

Page 3.4 32-CHANNEL DIGITAL I/O MODULE 40-412
pickering
SECTION 3 - INSTALLATION
Figure 3.2 - Typical Soft Front Panels when using ‘Test Panels’
Matrix Module
Multiplexer
Programmable Resistor
TESTING OPERATION
After installation of the hardware start the Test Panels application from the “ All Programs/Pickering Interfaces
Ltd/PXI Utilities
” menu. If you are a LabVIEW user, run “Test Panels (LabVIEW VI)”; if not, run “Test Panels
(EXE)”. A selector panel will appear, listing all installed Pickering PXI switch cards. Click on the card you wish
to control, and a graphical control panel is presented allowing operation of the card. Panels can be opened
simultaneously for all the installed cards.
As an alternative to the Test Panels, the simple Terminal Monitor program PILMon (again on the “All Programs/
Pickering Interfaces Ltd/PXI Utilities” menu) allows access to all functions of Pickering switch cards through a
command-line interface. In PILMon, enter “HE” for help on it’s commands.
Please note that both the Test Panels and Terminal Monitor gain exclusive access to the cards, and so only one
of them can be operational at any time.