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40-260
Precision Programmable Resistor Module
O Precision Variable Resistance From 90Ÿto 8kŸ
O 3 Channels Per Module
O Very High Accuracy and Stability
O Controlled by Simple Resistor Value Calls
O Fine Setting Resolution <10mŸ
O Short and Open Circuit Simulation
O Low Thermo-Electric EMF
O Simple Calibration With External DMM
O VISA & Kernel Drivers Supplied for
Windows XP/Vista/7/8
O Supported by PXI or LXI Chassis
O 3 Year Warranty
The 40-260 is the first in a new family of PXI based precision
programmable resistor modules from Pickering Interfaces.
This new generation of modules features high resistance
setting resolution with excellent resistance stability and
accuracy through the use of innovative switching networks
and software correction techniques.
Each module supports three identical resistor channels that
can be set to a range of resistance values with a setting
resolution of better than 10mŸ, making the 40-260 ideal
for simulating sensors that require fine adjustment of their
resistance. Thanks to the use of innovative technology the
40-260 ensures all resistance values can be set – no missing
values because of switch resistance or resistor tolerance.
Additionally, each channel can be set as open or short circuit
to simulate faults in cabling systems.
Applications include strain gauge and temperature dependent
resistor emulation.
Each channel can operate with a differential input voltage
range of greater than ±15V relative to a defined common
mode voltage. The common mode voltage can be set to 0V,
(input range of at least ±15V), +12V (input range of +27V
to -3V), -12V (input range of -27V to +3V) or an external
common mode source of up to ±50V.
The 40-260 provides a convenient system to support
calibration of the resistance for each channel using an
external DMM connected to the Calibration port. The
calibration system permits modules to be cascaded so just
one DMM can support the calibration of multiple devices and
resistor channels in-situ. Calibration can be performed while
the UUT is connected to the resistor channel connector.
Use of special switching techniques reduces measurement
errors caused by thermo-electric EMFs to a minimum.
The 40-260 offers a stability, accuracy and setting resolution
unmatched by any other PXI resistor module, minimizing the
need for customized resistor modules and user calibration in
the test system.
The 40-260 can be supported in an LXI Modular Switching
Chassis such as the Pickering 60-100A, 60-102 or 60-103.
RESISTOR CHANNEL
CONNECTOR
CHANNEL 2
CALIBRATION PORT
CONNECTOR
CHANNEL 3
COARSE
ADJUST
FINE
ADJUST
CALIBRATION
MUX
Functional Diagram for the 40-260 Precision Programmable Resistor Module
pickeringtest.com
ISSUE 3.0 MAY 2013
CHANNEL 1
0.10
Specification
Resistor Channels
0.08
Configuration:
3 resistor channels per module.
Resistance Range
40-260-001
0.06
Resistance resolution:
<10mŸ, continuous resolution, no
missing settings.
Accuracy:
0.1% (can be improved with
calibration).
Short Circuit Setting:
<0.3Ÿinitial
Open Circuit Setting:
>109Ÿ
% ERROR
0.04
90Ÿ to 8kŸand open circuit or
short circuit.
0.02
0
-0.02
-0.04
-0.06
-0.08
-0.10
Operating Voltage:
50
Common mode voltage
Input voltage range
0V
-15V to +15V
+12V
-3V to +27V
-12V
-27V to +3V
External
Exernal ±15V
250
450
650
RESISTANCE (OHMS)
850
1050
Typical accuracy of 40-260 over the entire resistance
range measured at 21˚C
Performance is measured in 10mŸ increments by making a
resistance call (in Ohms) to the module and then
measuring the actual resistance with a DMM. Vertical axis
shows the reading error as % of the requested value.
Common mode voltage can be selected by software control. Default
value is 0 Volts.
Damage level is a differential voltage level of ±18V wrt common or
the maximum power rating, whichever is lower.
Other Resistor Modules
Pickering Interfaces manufacture a range of variable resistor
modules in the PXI format. If you have a requirement for a
variable resistor module please contact your local sales office
with the information below and we will advise you on the
best solution for your application.
Ext common mode
voltage:
±50V
Maximum power:
100mW
Lowest Resistance †
Thermo-electric emf:
<2μV 90Ÿ to 260Ÿ
<5μV60Ÿ to 8kŸ
Highest Resistance
Resistance - power off:
Open circuit
Operating time:
3ms typical
Resistance Resolution
Overall Accuracy
Maximum Power/Current
Calibration Channel
Number of Channels (variable resistors)
Function:
Supports 4 terminal measurements
of all the channels in the module.
Modules can be cascaded together
to permit single DMM to support
multiple modules with resistor
channel connected to UUT.
Software support:
Supplied with software that accepts
a resistance instruction.
Power
+3.3V
+5V
+12V
-12V
0
0.2A
10mA
10mA
Physical Parameters
Physical characteristics:
One slot, 3U PXI.
Weight: 280g
3D models in a variety of popular
file formats are available on
request.
PCI Interface:
33MHz, 32-bit address, 16 bit data.
Connectors:
15-way male D-type for resistor
channels.
9-way male D-type for calibration
connection.
† Resistance is as measured across the user connector terminals,
minimum resistance must have a non-zero value.
Product Order Codes
3 Channel Precision Resistor 90Ÿ to 8kŸ
40-260-001
Accessories:
Calibration port to DMM lead (shrouded 4mm bayonet plug)
for single module (1x9way D-type)
40-975-009-SL1
for two modules (2x9way D-types)
40-975-009-SL2
for three modules (3x9way D-types)
40-975-009-SL3
(calibration leads capable of supporting a greater number
of modules are available, please contact sales office)
Mating Connectors & Cabling
For connection accessories for the 40-260 please refer to
the 90-010D 15-way D-type and 90-003D 9-way D-type
Connector Accessories data sheets where a complete list
and documentation can be found for accessories, or refer
to the Connection Solutions catalog.
The 40-260 uses innovative techniques which
are the subject of protected Pickering Interfaces
intellectual property rights.
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Soft Front Panel for the 40-260 Precision Resistor Module
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Programming
Pickering provide kernel, IVI and VISA (NI and Agilent) drivers
which are compatible with 32/64-bit versions of Windows
including XP, Vista, 7 and 8 operating systems. 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:
y National Instruments products (LabVIEW, LabWindows/
CVI, Switch Executive, MAX, TestStand, etc.)
y Microsoft Visual Studio products (Visual Basic, Visual C+)
y Agilent VEE
y Mathworks Matlab
y Geotest ATE Easy
y MTQ Testsolutions Tecap
Drivers for popular Linux distributions are available, other
environments are also supported, please contact Pickering
with specific enquiries.
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.
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 Switching
chassis. For information on driving your switching solution in
an LXI environment refer to the LXI Product Guide.
Operating/Storage Conditions
Operating Conditions
0°C to +55°C
Up to 90% non-condensing
5000m
Storage and Transport Conditions
Storage Temperature:
-20°C to +75°C
Humidity:
Up to 90% non-condensing
Altitude:
15000m
Please refer
f to
t the
th Pickering
Pi k i
Interfaces “Connection
Solutions” catalog for the full list
of connector/cabling options,
including drawings, photos and
specifications. This is 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.
Latest Details
Please refer to our Web Site for Latest Product Details.
www.pickeringtest.com
“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.
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 “PXI
Module Map”
- a simple foldout selection
guide to all
Pickering’s
600+ PXI
Modules.
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© Copyright (2013) 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.
Operating Temperature:
Humidity:
Altitude: