32-Channel (2-Wire), 300 V Multiplexer Switches
NI PXI-2527, NI PXIe-2527
NEW!
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64x1 1-wire, 32x1 2-wire, or 16x1
4-wire multiplexer
Maximum switch capacity
Up to 300 VDC/300 VAC, CAT I
Up to 2 A switching/2 A carry
Up to 60 W or 62.5 VA
Onboard relay counting
140 cycles/s
Fully software programmable
Deterministic operation with
hardware triggers
32,000-step scan list
Available in both PXI and PXI Express
versions for optimal slot placement
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Operating Systems
Windows XP/2000/NT
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Recommended Software
LabVIEW
LabWindows
™
/CVI
Measurement Studio
for Visual C++
NI Switch Executive
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Other Compatible Software
Visual Basic
ANSI C/C++
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Driver/Measurement Services
Software (included)
NI-SWITCH
NI-DAQmx
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Compliance
UL
CE
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Overview and Applications
The NI PXI-2527 and PXIe-2527 are high-voltage multiplexer switch modules
designed for medium- to high-density automated test systems. With a
switching capacity of up to 300 VDC/300 VAC and up to 2 A, an NI 2527
acts as an effective front end for NI 4070 and NI 4072 digital multimeters
(DMMs), offering simple channel expansion for voltage, current, resistance,
capacitance, or inductance measurements. NI provides multiple-channel
configurations including 64x1 one-wire, 32x1 two-wire, and 16x1 four-wire.
Each channel, using robust electromechanical relays, is capable of scanning
up to 140 channels/s. A cold-junction compensation (CJC) sensor is also
included in the front-mounting terminal block to assist in thermocouple
scanning applications.
Relay Count Tracking
These switch modules count relay closures on each of their relays. Relay counts
are incremented each time a relay is actuated. You can retrieve the counts,
stored on board the modules, programmatically and use them for predictive
maintenance to reduce unexpected system downtime.
Simplified Signal Connectivity
Make signal connections for the NI 2527 modules in the TB-2627 front-mounting
screw-terminal block. Additionally, to simplify connectivity with a DMM, use the
HV6-BAN4 cable, which connects the banana jack inputs of a DMM to the COMs
of each multiplexer bank.
Software
All National Instruments PXI 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, NI Switch Executive software provides an
easy-to-use, intelligent switch management and visual routing environment.
Use the NI-SWITCH soft front panel for simple relay operations or debugging
switch code/execution.
Automatic Scanning
NI 2527 switches are able to maximize throughput in automated test applications
with the use of scanning. Scanning improves throughput by downloading a list
of up to 32,000 connections to the switches 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 2527 with an instrument such
as an NI 407x FlexDMM, which issues a trigger after each measurement.
32-Channel (2-Wire), 300 V Multiplexer Switches
Ordering Information
NI PXI-2527 ...................................................................................778572-27
NI PXIe-2527 ..................................................................................780587-27
Includes NI-SWITCH driver software.
Accessories
TB-2627 terminal block .................................................................779358-01
HV6-BAN4 DMM connectivity cable ...........................................192795-0R2
NI Switch Executive
Development system......................................................................778546-01
Deployment engine ........................................................................778548-00
BUY NOW
For complete product specifications, pricing, and accessory information,
call 800 813 3693 (U.S.) or go to
ni.com/switches.
Safety Compliance
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IEC 61010-1, EN 61010-1
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:
EN 61326 (IEC 61326): Class A emissions; Basic immunity
EN 55011 (CISPR 11): Group 1, Class A emissions
AS/NZS CISPR 11: Group 1, Class A emissions
FCC 47 CFR Part 15B: Class A emissions
ICES-001: Class A emissions
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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:
2006/95/EC; Low-Voltage Directive (safety)
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2004/108/EC; Electromagnetic Compatibility Directive (EMC)
BUY ONLINE at ni.com or C
ALL 800 813 36
93 (U.S.)
2
32-Channel (2-Wire), 300 V Multiplexer Switches
Specifications
Specifications subject to change without notice. Visit
ni.com/manuals
for
the latest full specifications.
Dynamic Characteristics
Maximum speed....................................
Relay operate time
Typical ...............................................
Maximum ..........................................
300 V, CAT I
300 V
2A
60 W, 62.5 VA
Refer to Figure 1
Expected relay life
Mechanical .......................................
Electrical
<30 mV, <10 mA, resistive ................
30 VDC, 2 ADC, resistive ..................
300 VDC, 60 mADC, resistive ...........
2.5x10
6
cycles
1x10
5
cycles
5x10
5
cycles
1x10
8
cycles
1 ms
3.4 ms
140 cycles/s
Input Characteristics
Maximum switching voltage
Channel-to-ground ............................
Channel-to-channel ..........................
Maximum switching/carry current ...
Maximum switching power
AC systems .......................................
DC systems .......................................
Physical
Relay types ............................................
Contact material....................................
I/O connectors .......................................
Dimensions............................................
Electromechanical, latching
Palladium-ruthenium, gold-covered
100 POS HDI right-angle, male
2 by 10 by 17.4 cm
(0.8 by 3.9 by 6.9 in.) single-slot, 3U
Environment
Operating temperature..........................
Storage temperature .............................
Relative humidity ..................................
Figure 1. Maximum Switching Power for DC Loads (per channel).
0 to 55 °C
-20 to 70 °C
5 to 85% noncondensing
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Note: If you are using an NI 2527 with an NI PXI-101x or the NI PXI-1000B chassis,
operating temperature for the NI 2527 modules is 0 to 45 °C.
Pollution degree ....................................
Indoor use only.
Typical DC path resistance
Initial .................................................
End of life..........................................
Differential thermal EMF
Typical ...............................................
Maximum ..........................................
Bandwidth (-3 dB)
1-wire................................................
2-wire................................................
>30 MHz
>25 MHz
2.5 V
<12 V
<1½
>2½
BUY ONLINE at ni.com or C
ALL 800 813 36
93 (U.S.)
3
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
ni.com/support.
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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Training and Certification
NI training is the fastest, most certain route to productivity with our products.
NI training can shorten your learning curve, save development time, and reduce
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courses in cities worldwide, or we can hold a course at your facility. We also
offer a professional certification program that identifies individuals who have
high levels of skill and knowledge on using NI products.
Visit
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Hardware Services
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NI system assurance programs are designed to make it even easier for you
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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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ni.com
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800 813 3693
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National Instruments
info@ni.com
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