Pickering 41-761 User manual

pickeringtest.com
Issue 1.0 December 2019
41-761 User Manual
PXI Isolated Millivolt Thermocouple Simulator Module

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ISOLATED MILLIVOLT THERMOCOUPLE SIMULATOR 41-761
Page (II) REED RELAY MODULE 40-110/115/120/125
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© COPYRIGHT (2019) 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

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ISOLATED MILLIVOLT THERMOCOUPLE SIMULATOR 41-761
Page (III)
REED RELAY MODULE 40-110/115/120/125
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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]

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ISOLATED MILLIVOLT THERMOCOUPLE SIMULATOR 41-761
Page (IV) REED RELAY MODULE 40-110/115/120/125
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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.

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ISOLATED MILLIVOLT THERMOCOUPLE SIMULATOR 41-761
Copyright Statement .......................................................... ii
Technical Support and Warranty....................................... iii
Contents (this page)........................................................... v
Section 1
Technical Specication...................................................... 1.1
Section 2
Technical Description ........................................................ 2.1
Functional Description................................................. 2.1
Guidance on Using the Module................................... 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 Pickering PXI Cards........ 4.1
Programming The 41-761............................................. 4.2
General Soft Front Panel ............................................. 4.4
Appendix: Sub-Units & Bit Usage............................... 4.5
Section 5
Connector Information....................................................... 5.1
Section 6
Trouble Shooting ................................................................ 6.1
Section 7
Maintenance Information................................................... 7.1
Software Update ........................................................... 7.1
Verication & Adjustment Procedure ......................... 7.2
Verication Test Results .............................................. 7.5
Section 8
Accessories ........................................................................ 8.1
Cold Junction Compensation Block........................... 8.1
CONTENTS

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SECTION 1 - TECHNICAL SPECIFICATION
Page 1.1
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ISOLATED MILLIVOLT THERMOCOUPLE SIMULATOR 41-761
SECTION 1 - TECHNICAL SPECIFICATION
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PXI Isolated Millivolt Thermocouple Simulator 41-761
ISSUE E NOV 2019
PRELIMINARY DATA
• 32, 24, 16 or 8 Channel Low Voltage Source
• Ideal For Thermocouple Simulation
• +/-100mV, +/-50mV and +/-20mV Output Ranges
• 0.7µV Voltage Resolution (+/-20mV Range)
• Two-Wire Output for Each Channel
• Independently Isolated Channels
• Open Circuit Simulation
• Supported in PXI or LXI Chassis
• Kernel and VISA Drivers
• 3 Year Warranty
78-Pin D-Type Front Panel Connector
VOLTAGE
GENERATOR
1
Vo1 Vcold1
Channel 2 Channel 32Channel 1
VOLTAGE
GENERATOR
2
Vo2 Vcold2
VOLTAGE
GENERATOR
32
Vo32 Vcold32
Functional Diagram for the 41-761-001 Isolated Millivolt Thermocouple Simulator Module
The 41-761 is a low voltage output module ideal for simulating the
operation of a thermocouple, available with a choice of 32, 24, 16
or 8 channels. Each channel of the 41-761 provides a low voltage
output across two connector pins capable of providing ±20mV with
0.7µV resolution, ±50mV with 1.7µV resolution and ±100mV with
3.3µV resolution, covering most thermocouple types.
The use of two wire outputs and isolation from ground ensures that
the 41-761 can be used to accurately simulate low voltages even in
the presence of common mode voltages in the system. Each Vcold
connection is independent permitting the 41-761 to be connected
to multiple cold junctions.
Each simulation channel is able to provide an open circuit setting
to simulate faulty wiring connections to a sensor.
For improved accuracy each channel of the Low Voltage Output
carries accurate calibration data stored in EEPROM on the
module. Regular calibration of the channels is not necessary.
When used for Thermocouple Simulation the 41-761 can be
connected straight into the measurement system, bypassing the
need for Isothermal Blocks and Cold Junction Compensation. To
aid in this, Pickering offers a 78-pin connector solution that has
32, 24, 16 or 8 copper twisted pairs terminated with mini copper
thermocouple plugs. Use of copper connections minimizes offset
voltage generation in the connection interface.
Alternatively Pickering can also supply connector blocks that
convert the copper connections of the module’s 78-pin connector to
that of the required thermocouple type.

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SECTION 1 - TECHNICAL SPECIFICATION
ISOLATED MILLIVOLT THERMOCOUPLE SIMULATOR 41-761
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Isolated Thermocouple Simulator – 41-761
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Specifications
PRELIMINARY DATA
Specification
Low Voltage Channels:
Number of Channels: 32, 24, 16 or 8
Output Voltage Range: ±20mV, ±50mV and ±100mV ranges
(Vo to Vcold).
Voltage Resolution: 0.7µV nominal (±20mV range),
1.7µV nominal (±50mV range),
3.3µV nominal (±100mV range).
Channel Isolation: 100V
Output Resistance: 2.6Ω typical
Accuracy*
(Measuring Condition:
High-Z Instrument): 0.1% ±5µV (±20mV range),
0.1% ±10µV (±50mV range),
0.1% ±15µV (±100mV range).
* Valid at ±10°C from calibration temperature
(factory calibrated at 21°C).
Operation Time: 780µs typical (xed range)
3.7ms typical (across range)
Power Off State: Open circuit
Software support:
Supplied with software that responds to a voltage instruction on
the selected channel.
Power Requirements
+3.3V +5V +12V -12V
270mA 1.4A 0 0
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 & CompactPCI Compliance
The module is compliant with the PXI Specication 2.2. Local Bus,
Trigger Bus and Star Trigger are not implemented.
Uses a 33MHz 32-bit backplane interface.
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.*
Mechanical Characteristics
Single slot 3U PXI (CompactPCI card).
3D models for all versions in a variety of popular le formats are
available on request.
Connectors
PCI Interface: 33MHz, 32 bit address, 16 bit data
Interface is compatible with PXI, PXI Express
Legacy and PXI Express Hybrid slots.
Signals via front panel 78-pin male D-type connector, for pin outs
please refer to the operating manual.
Vo1
Vcold1
Channel 2
Channel 1
Vo2
Vcold2
Vo32
Vcold32
Channel 32
41-761 UUT
Using 41-761-001 directly connected to UUT for
Thermocouple Simulation

SECTION 1 - TECHNICAL SPECIFICATION
Page 1.3
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ISOLATED MILLIVOLT THERMOCOUPLE SIMULATOR 41-761
Isolated Thermocouple Simulator – 41-761
pickeringtest.com
Ordering Information
PRELIMINARY DATA
Mating Connectors & Cabling
For connecting the Thermocouple Simulator module to the device
under test we recommend the following cables:
78-pin D-type to 32 mini copper
thermocouple plugs, 1m length*
A078DFR-32M002T5A100
78-pin D-type to 24 mini copper
thermocouple plugs, 1m length*
A078DFR-24M002T5A100
78-pin D-type to 16 mini copper
thermocouple plugs, 1m length*
A078DFR-16M002T5A100
78-pin D-type to 8 mini copper
thermocouple plugs, 1m length*
A078DFR-08M002T5A100
*Other lengths are available.
Other 78-pin cable/connector products are available but may
reduce the performance of the product.
For applications requiring specic thermocouple wiring and
connector types. please contact your local Pickering Sales Ofce.
Product Order Codes
Isolated Millivolt Thermocouple Simulator
32 Channel
24 Channel
16 Channel
8 Channel
41-761-001
41-761-002
41-761-003
41-761-004
Accessories
Compensation Block 40-965-912
Product Customization
Pickering PXI modules are designed and manufactured on our own
exible manufacturing lines, giving complete product control and
enabling simple customization to meet very specic requirements.
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 ofce to discuss.
Pickering Interfaces is dedicated to developing its Millivolt
Thermocouple Simulation range. If there are any sensor
types or features that are not currently available, please
contact your local sales ofce with details.
41-761 Isolated Millivolt
Thermocouple
Simulator Module
Temperature
Sensor
Temperature
Sensor
Temperature
Sensor
Temperature
Sensor
40-965-912 Compensation Block
The Compensation Block accessory (40-965-912) allows the temperature of the front panel junction to be read
back through the provided driver, enabling compensation of settings to increase accuracy.

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SECTION 1 - TECHNICAL SPECIFICATION
ISOLATED MILLIVOLT THERMOCOUPLE SIMULATOR 41-761
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Isolated Thermocouple Simulator – 41-761
pickeringtest.com
Supporting Products & Software
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.
Visit: pickeringtest.com/cdt to start your design.
Mass Interconnect
We recommend the use of a mass interconnect solution when an Interchangeable Test
Adapter (ITA) is required for a PXI or LXI based test system. Our modules are fully
supported by both Virginia Panel and MacPanel.
Pickering Reed Relays
We are the only switch provider with in-house reed relay manufacturing capability via
our sister company, Pickering Electronics. These instrument grade reed relays feature
SoftCenter® technology, ensuring long service life and repeatable contact performance.
To learn more, please go to: pickeringrelay.com
Chassis Compatibility
This PXI module must be used in a suitable chassis. It is compatible with the following chassis types:
• All chassis conforming to the 3U PXI and 3U Compact PCI (cPCI) specication
• Legacy and Hybrid Peripheral slots in a 3U PXI Express (PXIe) chassis
• Pickering Interfaces LXI or LXI/USB Modular Chassis
Chassis Selection Guide
Standard PXI or hybrid PXIe Chassis from any Vendor:
• Mix our 1000+ PXI switching & simulation modules with any
vendor’s PXI instrumentation
• Embedded or remote Windows PC control
• Real-time Operating System Support
• High data bandwidths, especially with PXI Express
• Integrated module timing and synchronization
Pickering LXI or LXI/USB Modular Chassis—only accept
our 1000+ PXI Switching & Simulation 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
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.
Connectors & Backshells Multiway Cable Assemblies RF Cable Assemblies Connector Blocks