Pickering 42-323 User manual

pickeringtest.com
Issue 1.2 August 2023
40/42-323 User Manual
PXI/PXIe High Voltage Power Relay Module

Page (II) PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
Page (II) REED RELAY MODULE 40-110/115/120/125
pickering
© COPYRIGHT (2023) 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)
PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
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) PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
Page (IV) REED RELAY MODULE 40-110/115/120/125
pickering
MEANING / DESCRIPTION SYMBOL
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.
DANGEROUS VOLTAGE
To indicate hazards arising from dangerous voltages.
WARNING / CAUTION
An appropriate safety instruction should be followed or caution to a potential hazard
exists.
Refer to the relevant instructions detailed within the product manual.
HEAVY
If this product is heavy reference should be made to the safety instructions for
provisions of lifting and moving.
STATIC SENSITIVE
To indicate that static sensitive devices are present and handling precautions should
be followed.
!
kg
SAFETY SYMBOLS
PRODUCT SAFETY
The following safety symbols may be used on the product and throughout the product documentation.

Page (V)
PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
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
Hardware Interlock ................................................................2.2
Section 3
Installation....................................................................................3.1
Pre Operation Checks...........................................................3.1
Hardware Installation ............................................................3.2
Software Installation .............................................................3.2
Testing Operation ..................................................................3.3
Section 4
Programming Guide....................................................................4.1
Programming Options For PXI/PXIe Modules.....................4.1
Module Architecture..............................................................4.2
Programming The Module ....................................................4.3
Section 5
Connector Information................................................................5.1
Section 6
Trouble Shooting .........................................................................6.1
Section 7
Maintenance Information............................................................7.1
Switching System Test Tools ...............................................7.1
Relay Lookup Table...............................................................7.2
Appendix A
Interlock Connector Wiring ........................................................A.1
CONTENTS

Page (VI) PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
THIS PAGE INTENTIONALLY BLANK

Page (VII)
PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
Page (VII)
2 AMP 1-POLE UHD MATRIX MODULES 40-575 / 576 / 577 / 578 / 579
pickering
WARNINGS AND CAUTIONS
WARNING - HAZARDOUS ENVIRONMENTS SYMBOL
This product is not specically designed for use in hazardous environments, for example in explosive
atmospheres. If the product is to be used in hazardous environments we recommend that the user
ensures suitable protective measures are taken.
!
WARNING - DANGER OF ELECTRIC SHOCK SYMBOL
This module may contain hazardous voltages. Before removing the module from the rack remove all
supplies and disconnect user I/O signals.
Unused slots in the host chassis are populated with blanking plates to prevent access to user I/O
signals that may be present. Blanking panels are available to order from Pickering in a variety of
slot widths. If the product is not used in this manner for example by using an extender card then
additional care must be taken to avoid contact with exposed signals.
Not to be used in safety critical circuits, refer to the Pickering Interfaces’ terms & conditions of sale.
This module must not be used for the switching of Mains Circuits. For the switching of voltages up
to the module’s full specication, Secondary Circuit power supplies and the Device Under Test must
be fully isolated from the Mains Circuit and the safety earth.
The host chassis must be correctly installed and be connected to mains or factory safety ground,
please refer to your chassis installation manual.
Diagram Showing Separation Between The Mains Circuit and Secondary Circuit / DUT
For the purposes of this document, a Mains Circuit is an installation classied as Overvoltage
Category II up to 300V. Separation between the Secondary Circuit and Mains Circuit is achieved
by a transformer in which the primary windings are separated from the secondary windings by
reinforced insulation, double insulation, or a screen connected to the protective conductor terminal.
CAUTION - HANDLING OF ELECTROSTATIC-SENSITIVE DEVICES SYMBOL
Certain semiconductor devices used in this equipment are liable to damage due to static voltage.
Observe the following precautions when handling these devices in their unterminated state, or
sub-assemblies containing these devices:
1. Persons removing sub-assemblies from equipment using these devices must be earthed by a
wrist strap and a resistor at the point provided on the equipment.
2. Soldering irons used during the repair operations must be low voltage types with earthed tips and
isolated from the mains voltage by a double insulated transformer.
3. Outer clothing worn must be unable to generate static charges.
4. Printed Circuit Boards (PCBs) tted with these devices must be stored and transported in
anti-static bags.
PXI Switching
Module
Device
Under Test
Power
Supply
Power
Supply
Host Chassis
Secondary Circuit
Mains
Circuit
Mains
Circuit
Mains/Factory
Safety Ground

Page (VIII) PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
Page (VIII) 2 AMP 1-POLE UHD MATRIX MODULES 40-575 / 576 / 577 / 578 / 579
pickering
CAUTION - PRODUCT DOCUMENTATION SYMBOL
Suitably qualied & trained users should ensure that the accompanying documentation is fully read
and understood before attempting to install or operate the product.
!
SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS
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).
• Appropriate manual handling procedures should be followed as dictated by the weight of the individual module or
the combined weight of the modules & chassis.
• Should a fault occur with the module or chassis, immediately isolate and disconnect the incoming power to the
chassis and the user I/O signals.
• Ensure the equipment is installed, operated and maintained by trained and authorised personnel.
• For suitably equipped products in the event of an emergency press the red “emergency stop” button situated on
the front of the unit.

Page 1.1
PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering SECTION 1 - TECHNICAL SPECIFICATION
SECTION 1 - TECHNICAL SPECIFICATION
yAvailable as a PXI or PXIe Module
y7 or 14 Relays Per Module
yCold Switch up to 9 kVDC/9 kVAC Peak
yHot Switch up to 7.5 kVDC/7.5 kVAC Peak
y0.25 A Hot Switch Current
yMaximum Power 50 W
yDry Reed Switch Contacts With RFI
Suppression for Long Life
yHardware Interlock Provided
yDrivers Supplied for Windows & Linux,
Plus Support for Real-time Systems
yPXI Version Supported by PXI or LXI
Chassis
y3 Year Warranty
40/42-323 High Voltage Power Relay
- Available as 7 x SPST or 14 x SPST
A1 C1
A2 C2
A3 C3
A4 C4
A5 C5
A6 C6
A7 C7
A8 C8
A9 C9
A10 C10
A11 C11
A12 C12
A13 C13
A14 C14
A1 C1
A2 C2
A3 C3
A4 C4
A5 C5
A6 C6
A7 C7
The 40-323 (PXI) and 42-323 (PXIe) are suitable for
applications requiring high voltage power switching with
high density. They have current handling up to 0.25 A, cold
switching up to 9 kVDC/9 kVAC peak and hot switching up
to 7.5 kVDC/7.5 kVAC peak. They are available with 7 or
14 separate single pole, single throw (SPST) relays. User
connections are made via a Redel K or S series high voltage
connector.
Applications include; circuit board isolation testing, relay
testing, semiconductor breakdown monitoring and cable
harness insulation testing.
A hardware interlock is provided on the front panel
connector that prevents relay operation if a suitably wired
mating connector is not fitted. This can, for example, be used
to disable relay operation if the test system cabinet door is
open.
Cover not shown
for clarity
pickeringtest.com
40/42-323
PXI/PXIe SPST High Voltage Power Relay
Issue 1.2 August 2023

Page 1.2 PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
SECTION 1 - TECHNICAL SPECIFICATION
Hardware Interlock
The 40/42-323 modules are fitted with a hardware
interlock. The interlock, when activated, will return all
relays to their default unpowered state (assuming the
switches are fully functional) and also provide error
notification via the software interface. The interlock
feature can be daisy-chained between additional
hardware interlock enabled modules for example to
allow one signal to disable multiple cards. For further
details please refer to the Hardware Interlock section
within the user manual.
100 Ω
+3.3 V
GND
External
Wire Link
Front Panel
Connector
Interlock
Daisy-chain
Interlock
Detection
Circiuitry
Processor Relay Driver(s)
SPI Serial
Comms
Output Enable
SPI Serial
Comms
Output Enable
Drive
Outputs
To
Relays
Interlock Signal Routing Diagram for 40/42-323
Interlock Connector
“Hot” Switching
This is when the load is switched with the high
voltage source applied. Hot switching may generate
considerable RFI, both within the switching module
and on interconnecting wiring. Care must be taken to
suppress or shield all cabling.
Note that any precaution which adds extra capacitance
to a cable should be taken with great care, even a very
small capacitance at high voltages can cause very
large inrush current through the module resulting in
possible switch weld and excessive RFI.
The 40/42-323 includes extensive built-in suppression
circuits that minimize RFI and surge problems.
“Cold” Switching – The Preferred Option for Reliability
& Long Life
With cold switching, the relay is operated before the high voltage
source is applied. In this case the maximum carry current is much
greater, also there will be much less stress on the reed relays,
resulting in improved reliability and life.
Most high voltage sources include a soft start facility which reduces
the likelihood of generating RFI or temporary over-voltage.
High voltage switching modules are often used for isolation testing
applications (e.g. cable, transformer or semiconductor isolation
tests), in these cases, cold switching is nearly always the preferred
option to reduce the risk of high voltage transients that may cause
premature breakdown.
Overview of “Hot” & “Cold” Switching Techniques
40-323-900-HI & 40-323-901-HI PXI High Voltage
Power Relay Modules with Covers
RFI Suppression
The 40/42-323 module includes RFI suppression that extends
relay contact life in hot switching applications and controls
surges caused by high voltage transients in cold switching
applications. The suppressors also ensure the module’s safe
operation when connected to a high voltage source via cable
assemblies that might otherwise generate additional transients
or RFI problems.
The suppression components result in reduced bandwidth and
slightly higher path resistance compared to standard designs
(please refer to the switching specification table).
Please note, it is good practice to keep high voltage switching
modules away from more sensitive units to minimize crosstalk.
40/42-323
pickeringtest.com Page 2
PXI/PXIe SPST High Voltage Power Relay

Page 1.3
PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering SECTION 1 - TECHNICAL SPECIFICATION
Operating/Storage Conditions
Operating Temperature:
Humidity:
Altitude:
0 °C to +55 °C
Up to 70 % non-condensing
5000 m
Storage Temperature:
Humidity:
Altitude:
-20 °C to +75 °C
Up to 70 % non-condensing
15000 m
High Voltage Switching Specification
Switch Type: Tungsten Reed
Max Hot Switch Voltage:
Max Cold Switch Voltage:
7.5 kVDC/7.5 kVAC peak*
9 kVDC/9 kVAC peak*
Max Power:
Max Hot Switch Current:
Max Cold Switch Current:
50 W
0.25 A
0.25 A
Initial On Path Resistance:
Off Path Resistance:
Thermal Offset:
<2.3 Ω
>1x1012 Ω
<85 µV
Operate Time: 7 ms typical
Expected Life: >1x107 operations
* For full voltage rating, signal sources to be switched must
be fully isolated from mains supply and safety earth.
RF Specification
Bandwidth (-3 dB): 1.4 MHz (typical)
VSWR (1.5:1): 340 kHz (typical)
Crosstalk (typical): 10 kHz:
100 kHz:
1 MHz:
4 MHz:
-70 dB
-70 dB
-60 dB
-45 dB
Isolation (typical): 10 kHz:
100 kHz:
1 MHz:
4 MHz:
60 dB
70 dB
50 dB
40 dB
Mechanical Characteristics
40-323 - Single slot 3U PXI (CompactPCI card).
42-323 - Single slot 3U PXIe, compatible with PXIe hybrid slot.
Module weight: 430 g
3D models for all versions in a variety of popular file formats
are available on request.
Connectors
40-323 - PXI bus via 32-bit P1/J1 backplane connector.
42-323 - PXIe bus via XJ3 and XJ4 backplane connectors.
Signals via front panel connectors:
• 40/42-323-900-HI - Redel K series high voltage, 22-pin
• 40/42-323-901-HI - Redel S series high voltage, 51-pin
• Interlock: 1 x 4-pin female 00 series (mating half supplied
with module, to be wired by end user).
For pin outs please refer to the operating manual.
Relay Type
The 40/42-323 is fitted with high quality tungsten reed
relays specifically designed for very high voltage switching
and are manufactured by our Relay Division:
pickeringrelay.com
Power Requirements - 40-323
+3.3 V +5 V +12 V -12 V
0.2 A 0 0.8 A 0
Power Requirements - 42-323
+3.3 V +12 V
0.2 A 0.8 A
PXI & CompactPCI Compliance - 40-323
The module is compliant with the PXI Specification 2.2. Local
Bus, Trigger Bus & Star Trigger are not implemented.
Uses a 33 MHz 32-bit backplane interface.
PXIe Compliance - 42-323
The module is compliant with the PXIe Specification 1.0. Local
Bus, Trigger Bus & Star Trigger are not implemented.
Safety & CE Compliance
All modules are fully CE compliant and meet applicable
EU directives:
Low-voltage safety EN61010-1:2010,
EMC Immunity EN61326-1:2013, Emissions
EN55011:2009+A1:2010.
40/42-323
pickeringtest.com Page 3
Specifications

Page 1.4 PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
SECTION 1 - TECHNICAL SPECIFICATION
Support Products
Spare Relay Kits
Kits of replacement relays are available for the majority of
Pickering’s switching products, simplifying servicing and
reducing down-time.
Product Relay Kit
4x-323-90x-HI 91-100-121
For further assistance, please contact the Pickering sales
office.
Interlock Connectors
Spare/replacement connectors can be ordered for the
interlock function.
Product Description
44-961-040 Connector with internal link.
44-960-040 Connector only, no internal wiring (replacing
that supplied with the module).
Mating Connectors & Cabling
For connection accessories for the 40/42-323 range
please refer to the 90-025HVD 22-pin Redel K series or the
90-026HVD 51-pin Redel S series Connector Accessories data
sheet where a complete list and documentation can be found
for accessories.
Product Order Codes
PXI High Voltage Power Relay Module
7 x SPST With Hardware Interlock
14 x SPST With Hardware Interlock
40-323-900-HI
40-323-901-HI
PXIe High Voltage Power Relay Module
7 x SPST With Hardware Interlock
14 x SPST With Hardware Interlock
42-323-900-HI
42-323-901-HI
42-323-900-HI & 42-323-901-HI PXIe High Voltage
Power Relay Modules (covers not shown for clarity)
Product Customization
Pickering modules are designed and manufactured on our
own flexible manufacturing lines, giving complete product
control and enabling simple customization to meet very
specific requirements. Customization can include:
• Alternative relay types
• Mixture of relay types
• Alternative number of relays
• Different performance specifications
All customized products are given a unique part number, fully
documented and may be ordered at any time in the future.
Please contact your local sales office to discuss.
40/42-323
pickeringtest.com Page 4
Ordering Information

Page 1.5
PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering SECTION 1 - TECHNICAL SPECIFICATION
40/42-323
pickeringtest.com Page 7
Supporting Products & Software
Chassis Compatibility
The PXI versions of this module are compatible with the following chassis types:
• All chassis conforming to the 3U PXI and 3U Compact PCI (cPCI) specification
• Legacy and Hybrid Peripheral slots in a 3U PXI Express (PXIe) chassis
• Pickering Interfaces LXI or LXI/USB Modular Chassis
The PXIe versions of this module are compatible with the following chassis types:
• All chassis conforming to the 3U PXIe specification
• PXIe and Hybrid Peripheral slots in a 3U PXI Express (PXIe) chassis
Chassis Selection Guide
Pickering LXI or LXI/USB Modular Chassis
Only accept our PXI Switching & Simulation Modules:
• Choose from 1000+ Pickering PXI Modules
• Ethernet or USB control enables remote
operation
• Low-cost control from practically any
controller
• LXI provides manual control via Web
browsers
• Driverless software support
• Power sequencing immunity
• Ethernet provides chassis/controller voltage isolation
• Independence from Windows operating system
PXI and PXIe (with PXIe and/or Hybrid slots)
Chassis from any Vendor:
• Mix our 1000+ PXI/PXIe switching &
simulation modules with any vendor’s
PXI/PXIe instrumentation
• Embedded or remote Windows
PC control
• Real-time Operating System Support
• High data bandwidths, especially with PXI Express
• Integrated module timing and synchronization

Page 1.6 PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
SECTION 1 - TECHNICAL SPECIFICATION
40/42-323
pickeringtest.com Page 8
Supporting Products & Software
Connectors
& Backshells
Multi-way
Cable Assemblies
RF Cable
Assemblies
Breakouts
Connectivity Solutions
We provide a full range of supporting cable and connector solutions for all our switching
products—20 connector families with 1200+ products. We offer everything from simple
mating connectors to complex cables assemblies and terminal blocks. All assemblies are
manufactured by Pickering and are guaranteed to mechanically and electrically mate to our
modules. These accessories are detailed in Connector Accessories data sheets, where a
complete list and documentation can be found for each accessory.
Connector
Blocks
We also offer customized cabling and have a free online Cable Design Tool that can be used to create custom cable solutions for
many applications.
• Fully supported on modern browsers and tablet operating systems.
• Built-in tutorials and videos allow you to get quickly up to speed.
• Store cable assemblies in the Cloud and develop over time.
• Each cable design has a downloadable PDF documentation file
detailing all specifications
Start designing your custom cabling, go to pickeringtest.com/cdt
Mass Interconnect
We recommend the use of a mass interconnect solution when an Interchangeable Test Adapter (ITA) is required for PXI/LXI
based test systems. Our modules are fully supported by Virginia Panel and MacPanel.
Pickering Reed Relays
We are the only switch provider with in-house reed relay manufacturing capability
via our Relay Division. These instrument grade reed relays feature SoftCenter™
technology, ensuring long service life and repeatable contact performance.
To learn more go to pickeringrelay.com

Page 1.7
PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering SECTION 1 - TECHNICAL SPECIFICATION
40/42-323
pickeringtest.com Page 8
Supporting Products & Software
Connectors
& Backshells
Multi-way
Cable Assemblies
RF Cable
Assemblies
Breakouts
Connectivity Solutions
We provide a full range of supporting cable and connector solutions for all our switching
products—20 connector families with 1200+ products. We offer everything from simple
mating connectors to complex cables assemblies and terminal blocks. All assemblies are
manufactured by Pickering and are guaranteed to mechanically and electrically mate to our
modules. These accessories are detailed in Connector Accessories data sheets, where a
complete list and documentation can be found for each accessory.
Connector
Blocks
We also offer customized cabling and have a free online Cable Design Tool that can be used to create custom cable solutions for
many applications.
• Fully supported on modern browsers and tablet operating systems.
• Built-in tutorials and videos allow you to get quickly up to speed.
• Store cable assemblies in the Cloud and develop over time.
• Each cable design has a downloadable PDF documentation file
detailing all specifications
Start designing your custom cabling, go to pickeringtest.com/cdt
Mass Interconnect
We recommend the use of a mass interconnect solution when an Interchangeable Test Adapter (ITA) is required for PXI/LXI
based test systems. Our modules are fully supported by Virginia Panel and MacPanel.
Pickering Reed Relays
We are the only switch provider with in-house reed relay manufacturing capability
via our Relay Division. These instrument grade reed relays feature SoftCenter™
technology, ensuring long service life and repeatable contact performance.
To learn more go to pickeringrelay.com
40/42-323
pickeringtest.com Page 9
Supporting Products & Software
Programming
Pickering provide kernel, IVI and VISA (NI & Keysight) drivers which are compatible with all Microsoft supported versions of
Windows and popular older versions.
For more information go to pickeringtest.com/os
The VISA driver support is provided for LabVIEW Real Time Operating Systems (Pharlap and Linux-RT). For other RTOS support
contact Pickering. These drivers may be used with a variety of programming environments and applications including:
• Pickering Interfaces Switch Path Manager
• National Instruments products (LabVIEW, LabWindows/CVI, Switch Executive, MAX, TestStand, VeriStand, etc.)
• Microsoft Visual Studio products (Visual Basic, Visual C++)
• Programming Languages C, C++, C#, Python
• Keysight VEE and OpenTAP
• Mathworks MATLAB, Simulink
• Marvin ATEasy
• MTQ Testsolutions Tecap Test & Measurement Suite
Drivers for popular Linux distributions are available, other environments are also supported, please contact Pickering
with specific enquiries. We provide Soft Front Panels (SFPs) for our products for familiarity and manual control, as well as
comprehensive documentation and example programs to help you develop test routines with ease.
To learn more about software drivers and development environments go to pickeringtest.com/software
DMM+ R3a
S+ R3b
DMM- R3c
S- R3d
DMM
S+ S-
DMM+ DMM-
aX1 aX3
aX4
aX7 aX9 aX11 aX13 aX15 aX17 aX19 aX21 aX23 aX25 aX27 aX31
aY1
aY2
aY3
aY4
Switch 1
bY1
bY2
bY3
bY4
bY5
bY6
bY7
bY8
bX1 bX5 bX7 bX9 bX11 bX13 bX15 bX17 bX19 bX21 bX23
R3a R3b
R3c R3d
Switch 2 Device Under Test
Signal Routing Software
Our signal routing software, Switch Path Manager,
automatically selects and energizes switch paths
through Pickering switching systems. Signal
routing is performed by simply defining test
system endpoints to be connected together, greatly
accelerating Test System software development.
To learn more go to pickeringtest.com/spm

Page 1.8 PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
SECTION 1 - TECHNICAL SPECIFICATION
40/42-323
pickeringtest.com Page 10
Supporting Products & Software
© Copyright (2023) Pickering Interfaces. All Rights Reserved.
Pickering Interfaces maintains a commitment to continuous product development, consequently we reserve the right to vary from the description given in this data sheet.
Diagnostic Relay Test Tools
eBIRST Switching System Test Tools are designed
specifically for our PXI, PCI or LXI products, these tools
simplify switching system fault-finding by quickly testing
the system and graphically identifying the faulty relay.
To learn more go to pickeringtest.com/ebirst
Three Year Warranty & Guaranteed Long-Term Support
All standard products manufactured by Pickering Interfaces are warranted against defective materials and workmanship for
three years from the date of delivery to the original purchaser. Extended warranty and service agreements are available with
various levels for your requirements. Although we offer a 3-year warranty as standard, we also include guaranteed long-term
support—with a history of supporting our products for typically 15-20 years.
To learn more go to pickeringtest.com/support
Available Product Resources
We have a library of resources including success stories, product and support videos, articles and white papers as well as
application-specific brochures to assist you. We have also published reference books on switching technology and the PXI and
LXI standards.
To view, download or request any of our product resources go to pickeringtest.com/resources
B
B
IRST
IRST
e
e

Page 2.1
PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering SECTION 2 - TECHNICAL DESCRIPTION
SECTION 2 - TECHNICAL DESCRIPTION
FUNCTIONAL DESCRIPTION
A functional block diagram is provided in Figure 2.1. The 40/42-323-901-HI High Voltage Power Relay Module is
powered by +3.3V and +12V input via Compact PCI connector J1, or Compact PCIe connectors XJ3 and XJ4. The
interface to the user test equipment is via the front panel mounted 51-pin REDEL S-Series connector. The module
comprises a PCB populated with 14 high voltage tungsten reed relays. The relays are energised via control
signals from relay drivers U15-U18, which are addressed by FPGA U1, to output the required signal. Module
conguration is determined by links and data stored in FRAM U8. FPGA U1 is congured by FRAM U7.
The 40/42-323-900-HI High Voltage Power Relay Module has the same architecture but is partially populated with
7 high voltage tungsten reed relays and the user connection is a 22-pin REDEL K-Series connector.
Relay
Drivers
U15-18
PXI/PXIe High Voltage Power Relay Module - 40/42-323
Relays RL1-14
or RL6-11, 14
14 or 7 SPST High
Voltage Relays
Front Panel Connector J2 - 51-pin
S-Series or 22-pin K-series REDEL
PCI Bridge
Configuration
Memory U7
Level
Translators
U2-3
(40-323)
PCI Bridge U1
GND
Module
Configuration
Memory U8
Compact PCI Bus
Connector J1 (40-323)
+5V
+3.3V
GND
PXIe Connectors
XJ3 & XJ4 (42-323)
+12V
+3.3V
+12V
Interlock Connector
4-pin 00-series
Hardware
Interlock
Circuit
Figure 2.1 - Power Relay Module 40/42-323: Functional Block Diagram
40/42-323
pickeringtest.com Page 10
Supporting Products & Software
© Copyright (2023) Pickering Interfaces. All Rights Reserved.
Pickering Interfaces maintains a commitment to continuous product development, consequently we reserve the right to vary from the description given in this data sheet.
Diagnostic Relay Test Tools
eBIRST Switching System Test Tools are designed
specifically for our PXI, PCI or LXI products, these tools
simplify switching system fault-finding by quickly testing
the system and graphically identifying the faulty relay.
To learn more go to pickeringtest.com/ebirst
Three Year Warranty & Guaranteed Long-Term Support
All standard products manufactured by Pickering Interfaces are warranted against defective materials and workmanship for
three years from the date of delivery to the original purchaser. Extended warranty and service agreements are available with
various levels for your requirements. Although we offer a 3-year warranty as standard, we also include guaranteed long-term
support—with a history of supporting our products for typically 15-20 years.
To learn more go to pickeringtest.com/support
Available Product Resources
We have a library of resources including success stories, product and support videos, articles and white papers as well as
application-specific brochures to assist you. We have also published reference books on switching technology and the PXI and
LXI standards.
To view, download or request any of our product resources go to pickeringtest.com/resources
B
B
IRST
IRST
e
e

Page 2.2 PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
SECTION 2 - TECHNICAL DESCRIPTION
HARDWARE INTERLOCK
The 40/42-323 modules have an interlock feature that can be used to return the relays (assuming they are fully
functional) to their default unpowered state if the interlock connector is not in place or if the connection between the
two interlock pins is open-circuit..
Note: The mating half to the hardware interlock connector is supplied with the module in an unwired state,
the user must implement the link connections as detailed in this section to permit operation of the module.
The user connector has the following control pins:
●Pin1: A 3.3V output from a 100Ω series protection resistor
●Pin2: An Enable pin which is by default pulled low by a 10kΩ resistor. NO RELAYS WILL BE
SWITCHED BY THE MODULE UNLESS THIS PIN VOLTAGE IS RAISED TO 3.3V.
The pin can be raised to 3.3V by connecting to the supplied 3.3V pin above. This is a global Enable for
all the relays on the module. If the Enable pin is allowed to be set low then the module will continue to
disable the relay operation until the software resets the channels to be on.
●Pin3: A Status Readback pin which is raised to 3.3V when the Enable pin is set high AND the software
has reset the module to enable relay control. This is available as physical signal on the user connector
and its status can be read back by the software driver.
●Pin4: A connection to PXI Ground
The interlock can be used in a variety of ways when multiple modules are used in a system:
●All the Enable pins can be linked together and a single switch used to pull the Enable high to 3.3V. The
enable pin can be pulled high using a user connection. The software driver can then enable or disable
individual channels.
●All but one of the Enable pins can be connected together and connected to the Readback Status pin
of one of the modules (Master Module). The Master Module then has its Enable pin connected high
(3.3V). To restart the system the software driver would then have to enable each module through the
Master Module’s Module Enable and then turn on each 40/42-323 through its Module Enable.
●Each module can be independently controlled by linking its Enable pin to its 3.3V pin, if the user
connector is disconnected or if the link between the interlock pins is open-circuit all the relays will return
to the default unpowered state and will require restarting through its software driver control.
●The Status Readback output from one module can be connected to the Enable of the next module in
the series chain. Disconnection of the user connector or if the link between the interlock pins is open-
circuit will result in the relays of all the modules further returning to their default unpowered state. As in
the previous cases when the user connection is re-established the software driver will need to restart
the system.
It should be emphasized that if the Enable pin of the module is set low, even temporarily, the module will not
automatically turn back on when the Enable returns high. The software driver must be used to turn the channels
back on.
If required, spare / replacement hardware interlock connector(s) can be purchased, please refer to Support Products
in Section 1 for details.

Page 2.3
PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering SECTION 2 - TECHNICAL DESCRIPTION
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
To Other 40/42-323 Modules
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
To Other 40/42-323 Modules
MASTER
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
Enable
40/42-323
HIGH
VOLTAGE
RELAY
MODULE
Status
+3.3V
PXI Gnd
To Other 40/42-323 Modules
MASTER
Figure 2.2 - All 40/42-323 Modules Enabled by a Common Signal
Figure 2.3 - 40/42-323 Modules Enabled by a Master Module
Figure 2.4 - Each 40/42-323 Module Enabled Independently
Figure 2.5 - 40/42-323 Module Enables Daisy-Chained From a Master

Page 2.4 PXI/PXIe HIGH VOLTAGE POWER RELAY MODULE 40/42-323
pickering
SECTION 2 - TECHNICAL DESCRIPTION
THIS PAGE INTENTIONALLY BLANK