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.
NI [ NATIONAL INSTRUMENTS CORPORATION ]
