High-Density Multiconfiguration Matrix Switch Modules
NI PXI-2531, NI PXIe-2531, NI PXI-2532, NI PXIe-2532
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512-crosspoint matrix in a single
3U PXI slot
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4x128 (1-wire), 8x64 (1-wire),
4x64 (2-wire), and 8x32 (2-wire)
matrix configurations
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Switch capacity
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NI 2531: Up to 60 VDC/30 VAC, 0.5 A
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NI 2532: Up to 100 VDC/100 VAC, 0.5 A
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2,000 cycles/s
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32,000-step scan list for
deterministic scanning
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Fully software programmable
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Onboard relay count tracking
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Multiple-module synchronization
with hardware triggers
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Sixteen 2x16 matrix banks for
custom matrix configurations
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Available in both PXI and PXI Express
versions for optimal slot placement
Operating Systems
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Windows XP/2000/NT
Recommended Software
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LabVIEW
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LabWindows
™
/CVI
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Measurement Studio
for Visual C++
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NI Switch Executive
Other Compatible Software
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Visual Basic
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ANSI C/C++
Driver Software (included)
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NI-SWITCH
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NI-DAQmx
Compliance
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UL (NI 2532 only)
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CE
Module
NI 2531
NI 2532
Maximum Voltage
60 VDC, 30 VAC
100 VDC, 100 VAC
Maximum Current
0.5 A per channel (10 W max)
0.5 A per channel (10 W max)
Module Connector
2x 150 pos, Samtec ERM8 series (optimized for ruggedness)
2x 160 pos, Samtec BTE-EM (optimized for high voltage)
Terminal Block Connector
2x female VHDCI (with optional screw terminal breakout)
Standard 0.050 in. pitch headers to ribbon cables
(with optional screw terminal breakout)
Overview
The NI PXI-2531, PXIe-2531, PXI-2532, and PXIe-2532 are 512-crosspoint,
high-speed matrix switch modules. With the ability to create up to a 4x2176 or
8x1088 one-wire matrix in a single PXI chassis and even larger configurations
with multichassis solutions, an NI 2531/2 is ideal for high-channel-count
automated test configurations. Featuring compact reed relays with switching
speeds up to 2,000 cycles/s and the ability to synchronize with instruments,
these modules provide maximum throughput in a test system for signals up to
100 VDC/100 VAC or 0.5 A.
modules are built with sixteen 2x16 matrices, you can also create matrix sizes
outside the standard terminal block configurations. Other one-wire configurations
include a 16x32 matrix or four independent 4x32 matrices. In a two-wire
configuration, you can build a dual 4x32 or 16x16 matrix. Contact NI for more
information on creating custom configurations.
Relay Count Tracking
An NI 2531/2 counts relay closures on each of its 512 relays. Relay counts are
incremented each time a relay is actuated. You can programmatically retrieve
the counts, which are stored on board the module, and use them for predictive
maintenance to reduce unexpected system downtime.
Matrix Operation
The NI 2531/2 modules are general-purpose matrices used to route referenced
or differential signals. Through software, you can control the modules to connect
any row to any column. One of the key advantages of these matrices is you can
adapt them to your switching needs. You can configure them in many different
matrix configurations by using NI terminal blocks listed. For example, you can
create a 4x128 one-wire matrix by using the TB-2640 terminal block with an NI
2531/2 module. You can easily transform the same module into an 8x64
one-wire matrix by using a TB-2641 terminal block. Because the NI 2531/2
Automatic Scanning
These modules maximize throughput in automated test applications by the
use of scanning. Scanning improves throughput by downloading a list of up to
32,000 connections to the switch and cycling through the list using an event
(trigger) without any interruption from the host processor. You can most
efficiently implement scanning by mating an NI 2531/2 with an instrument
such as the NI PXI-4070 6½-digit FlexDMM, which issues a trigger after
each measurement.
High-Density Multiconfiguration Matrix Switch Modules
Signal Connections
You can choose from several solutions for your signal connections. Terminal
blocks provide connectivity to strain-relieved 0.050 in. pitch headers ideal for
ribbon cable or to 68-pin VHDCI connectors with cabled breakout accessories.
You also can use mass interconnect solutions from industry leaders such as
Virginia Panel and MAC Panel. Contact NI for details on these products or for
information on creating your own custom connectivity solutions.
Ordering Information
NI PXI-2531 ....................................................................................778572-31
NI PXIe-2531 ..................................................................................780587-31
NI PXI-2532 ....................................................................................778572-32
NI PXIe-2532 ..................................................................................780587-32
Includes switch module and NI-SWITCH driver software.
Software
All National Instruments PXI and SCXI switch modules are shipped with
NI-SWITCH, an IVI-compliant driver that offers complete functionality for
all switch modules. For additional assistance in configuring, programming,
and managing higher-channel-count switching systems, consider using
NI Switch Executive.
NI 2531 Accessories
NI TB-2648 4x128 terminal block for NI 2531 ...............................781181-01
NI TB-2649 dual 4x64 terminal block for NI 2531 .........................781181-02
NI TB-2650 8x64 terminal block for NI 2531 .................................781181-03
NI TB-2651 dual 8x32 terminal block for NI 2531 .........................781181-04
NI 2532 Accessories
NI TB-2640 4x128 terminal block for NI 2532 ...............................779056-01
NI TB-2641 8x64 terminal block for NI 2532 .................................779056-03
NI TB-2643 dual 4x64 terminal block for NI 2532 .........................779056-07
NI TB-2644 dual 8x32 terminal block for NI 2532 .........................779056-09
NI Switch Executive Software
NI Switch Executive is an intelligent switch management and routing application.
With NI Switch Executive, you gain increased development productivity by
interactively configuring and naming switch modules, external connections,
and signal routes. You also increase test code reuse and system performance
with switch programming combined with NI TestStand test management
software, the LabVIEW and LabWindows/CVI development environments, and
Measurement Studio for Microsoft Visual Basic 6.0. Ultimately, NI Switch
Executive simplifies switch system configuration and increases test performance,
thus lowering your cost of test.
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For complete product specifications, pricing, and accessory information,
call 800 813 3693 (U.S.) or go to
ni.com/switches.
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High-Density Multiconfiguration Matrix Switch Modules
Specifications
Specifications subject to change without notice. Visit
ni.com/manuals
for the
latest full specifications.
Crosstalk, typical (50 Ω termination) – channel-to-channel
NI 2531
10 kHz ...........................................
100 kHz .........................................
1 MHz ...........................................
10 MHz .........................................
NI 2532
10 kHz ...........................................
60 V
60 V, CAT I
100 V
100 V, CAT I
2A
0.5 A (per channel)
0.5 A (per channel)
10 W (per channel)
<1 Ω
>2 Ω
>1 GΩ
100 kHz .........................................
1 MHz ...........................................
10 MHz .........................................
10 kHz ...............................................
100 kHz .............................................
1 MHz................................................
10 MHz..............................................
<-89 dB
<-73 dB
<-54 dB
<-36 dB
>91 dB
>71 dB
>51 dB
>32 dB
<-70 dB
<-70 dB
<-58 dB
<-38 dB
Input Characteristics
All input characteristics are DC, AC
pk
, or a combination, unless otherwise specified.
Maximum switching voltage
NI 2531
Channel-to-ground .......................
Channel-to-channel ......................
NI 2532
Channel-to-ground .......................
Channel-to-channel ......................
Maximum switching current.............
Maximum switching current.............
Maximum carry current ....................
Maximum switching power ..............
DC path resistance
Initial .................................................
End of life..........................................
Open channel ....................................
Isolation, typical (50 Ω termination) – open channel
Dynamic Characteristics
Maximum cycle speed ..........................
Relay operate time ................................
Release time .........................................
Simultaneous drive limit .......................
Expected relay life
Mechanical .......................................
10
9
cycles
10
8
cycles
5x10
6
cycles
10
6
cycles
2000 cycles/s
0.25 ms
0.25 ms
40 relays
Transfer Characteristics
Thermal EMF
1-wire................................................
2-wire................................................
NI-2531 bandwidth, typical
Module..............................................
TB-2648 (4x128) ................................
TB-2649 (Dual 4x64) .........................
TB-2650 (8x64) ..................................
TB-2651 (Dual 8x32) .........................
NI-2532 bandwidth, typical
Module..............................................
TB-2640 (4x128) ................................
TB-2643 (Dual 4x64) .........................
TB-2641 (8x64) ..................................
TB-2644 (Dual 8x32) .........................
30 MHz
10 MHz
11 MHz
9 MHz
12 MHz
20 MHz
10 MHz
11 MHz
11 MHz
14 MHz
<50 μV
<20 μV
Electrical (resistive)
10 V, 100 mA .....................................
25 V, 400 mA .....................................
60 V, 160 mA .....................................
Physical
Relay type..............................................
Relay contact material ..........................
Dimensions............................................
Reed
Rhodium
10 by 16 cm (3.9 by 6.3 in.)
single-slot, 3U
Environment
Operating temperature..........................
Storage temperature .............................
Relative humidity ..................................
Pollution degree ....................................
Approved at altitudes up to 2,000 m.
0 to 55 °C
-20 to 70 °C
5 to 85% noncondensing
2
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High-Density Multiconfiguration Matrix Switch Modules
Safety Compliance
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IEC 61010-1, EN 61010-1
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UL 61010-01, CSA 61010-1
Electromagnetic Compatibility
This product meets the requirements of the following EMC standards for
electrical equipment for measurement, control, and laboratory use:
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EN 61326 (IEC 61326): Class A emissions; Basic immunity
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EN 55011 (CISPR 11): Group 1, Class A emissions
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AS/NZS CISPR 11: Group 1, Class A emissions
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FCC 47 CFR Part 15B: Class A emissions
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ICES-001: Class A emissions
Note:
For EMC compliance, operate this product according to the documentation.
CE Compliance
This product meets the essential requirements of applicable European Directives
as follows:
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2006/95/EC; Low-Voltage Directive (safety)
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2004/108/EC; Electromagnetic Compatibility Directive (EMC)
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NI Services and Support
NI has the services and support to meet
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your needs around the globe and through
the application life cycle – from planning
and development through deployment and
ongoing maintenance. We offer services
and service levels to meet customer
requirements in research, design, validation,
and manufacturing.
Visit
ni.com/services.
Local Sales and Technical Support
In offices worldwide, our staff is local to the country, giving you access to
engineers who speak your language. NI delivers industry-leading technical
support through online knowledge bases, our applications engineers,
and access to 14,000 measurement and automation professionals within NI
Developer Exchange forums. Find immediate answers to your questions at
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We also offer service programs that provide automatic upgrades to your
application development environment and higher levels of technical support.
Visit
ni.com/ssp.
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NI training can shorten your learning curve, save development time, and reduce
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Visit
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NI recognizes the need to maintain properly calibrated devices for high-
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Repair and Extended Warranty
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