Pickering 41-743 User manual

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Issue 2.3 July 2021
41-743 User Manual
PXI Programmable Power Supply 48 V

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Page (II) REED RELAY MODULE 40-110/115/120/125
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© COPYRIGHT (2021) 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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PXI PROGRAMMABLE POWER SUPPLY 41-743
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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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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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PXI PROGRAMMABLE POWER SUPPLY 41-743
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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 Module............................................2.2
Section 3
Installation....................................................................................3.1
Pre Operation Checks...........................................................3.1
Software Installation .............................................................3.2
Hardware Installation ............................................................3.3
Soft Front Panel Installation.................................................3.4
Section 4
Programming Guide....................................................................4.1
Programming Options for Pickering PXI Modules .............4.1
Programming The 41-743 Power Supply.............................4.2
C Code Examples ..................................................................4.4
Using The Soft Front Panel ..................................................4.14
Section 5
Connector Information................................................................5.1
Section 6
Trouble Shooting.........................................................................6.1
Section 7
Maintenance Information............................................................7.1
Verication Procedure ..........................................................7.2
Verication Test Results .......................................................7.2
CONTENTS

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WARNINGS AND CAUTIONS
WARNING - HAZARDOUS ENVIRONMENTS SYMBOL
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.
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.
anti-static bags.
CAUTION - PRODUCT DOCUMENTATION SYMBOL
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.

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Page 1.1
PXI PROGRAMMABLE POWER SUPPLY 41-743
pickering SECTION 1 - TECHNICAL SPECIFICATION
SECTION 1 - TECHNICAL SPECIFICATION
PXI Programmable Power Supply 48 V 41-743
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ISSUE 1.9 APR 2018
yFully Isolated 0 to 48 V PSU
yHigh Accuracy and Low Noise
yCurrent Capacity 2 A to 20 V, 0.8 A at 48 V
yRemote Sense Connections
yProgrammable Current Limit
yVoltage Monitor
yTrigger For Measurement Operation or Output
Update
yBackplane Power From 2 PXI Slots
yVISA & IVI Drivers Supplied For Windows
Plus Soft Front Panel
ySupported by PXI or LXI Chassis
PCI
Interface
PXI
Bus
Isolated
DC-DC
Converter
PXI Power Linear
Regulator
Isolation
Barrier
Measurement
& Control
System
Vout+
Vout-
Vsense-
Vsense+
Block Diagram for 41-743 Power Supply Module
The 41-743 is a fully isolated programmable power supply
capable of delivering voltages to 48 V with a resolution
of less than 1 mV. It can deliver up to 40 W and requires
no external power source – power is drawn from two PXI
backplane slots.
Sense connections allow the 41-743 to regulate voltages
at a remote point to improve accuracy of test results when
wiring losses are significant. The sense facility can be set
to use a remote connection or to regulate the output at the
front panel terminals.
A programmable current limit protects switching systems
and the UUT when faults cause excessive current.
A monitor facility allows the user to read the actual voltage
being supplied and the current delivered to the load.
A trigger function allows the 41-743 to execute output
current limit or voltage settings in response to a hardware
event from the front panel or from the PXI Trigger Bus. The
trigger also supports the capture of current and voltage
measurements at the output, a buffer allows results to be
stored and read when the system is ready. Measurements
can also be made at timed intervals.
Output voltage rise time is controlled to avoid excessive
inrush current damaging the switching system when
driving capacitive loads.
The 41-743 can be supported by any PXI chassis or by
Pickering Interfaces’ LXI modular chassis.

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SECTION 1 - TECHNICAL SPECIFICATION
Programmable Power Supply 48 V, 41-743
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Specifications
Specification
Output Voltage
Range: 0 V to 48 V,
0.74 mV nominal resolution.
Output Voltage
Accuracy: ±0.2 % ±25 mV.
Voltage Slew Rate: 1 V/ms nominal at full load
Output Noise: 1.5 mVrms, 6 mV peak to peak, full load,
DC to 1 MHz.
Output Current
Range: 2 A to 20 V, de-rating linearly to
0.8 A at 48 V.
Current Limit: 0 to 2 A, 34 µA nominal resolution.
Current Limit
Accuracy: ±0.5 % of set value ±10 mA.
Voltage Sense: Voltage sense lines compensate for up
to 0.5 V voltage drop (0.25 V for each
connection), can be switched to sense
output voltage on user connector.
Current Monitor: Accuracy: ±0.2 % of reading ±5 mA
Resolution: 35 µA
Voltage Monitor: Accuracy: ±0.1 % of reading ±10 mV
Resolution: 0.74 mV
Isolation Barrier: Designed with ±250 V isolation barrier,
recommended to ±60 V relative to PXI
ground.
>100 MΩ insulation resistance from
voltage outputs to PXI ground.
Trigger Input: Front panel or PXI Trigger Bus.
Permits triggered output changes or
measurements, permits sampled output
measurements at time intervals in
multiple of 100 µs, permits a sequence
of output changes from stored settings.
Minimum trigger width 20 µs.
Front panel trigger input is optically
isolated, maximum input voltage +12 V,
50 mA.
Operating/Storage Conditions
Operating Conditions
Operating Temperature:
Humidity:
Altitude:
0 °C to +55 °C
Up to 90 % non-condensing
5000 m
Storage and Transport Conditions
Storage Temperature:
Humidity:
Altitude:
-20 °C to +75 °C
Up to 90 % non-condensing
15000 m
PXI & CompactPCI Compliance
The module is compliant with the PXI Specification 2.2.
Local Bus, Uses a 33 MHz 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
Dual slot 3U PXI (CompactPCI card).
3D models for all versions in a variety of popular file
formats are available on request.
Connectors
PXI bus via 32-bit P1/J1 backplane connector.
Power supply outputs & sense: 4-pin plug-in screw
terminal block
Trigger Input: SMB coaxial connector.
For pin outs please refer to the operating manual.
41-743 Safe Operational Area
Power Requirements
+3.3 V +5 V +12 V -12 V
750 mA 12 A max
(from 2 slots)
60 mA 0
Current
2.0A
0.8A
Voltage
20V 48V