Fonctionnalités

The NI 6527 devices are 48-bit, parallel, isolated digital I/O
interfaces for PCI bus computers and PXI/CompactPCI chassis. The
NI 6527 boards have 24 digital inputs and 24 digital switch
outputs, and are completely jumperless. With the NI 6527 you can
sense digital levels up to 28 VDC and switch currents of up to 120
mA. Because the NI 6527 is isolated, you can protect your system
from noise and spikes on external signals and break ground loops.

Specifications

Digital Input
Optically isolated input channels.................... 24, each with its own isolated ground
reference
Maximum input voltage................................. 28 VDC
Digital Logic Levels

Input current
5 V input................................................... 1.3 mA/channel minimum
24 V input................................................. 7.3 mA/channel minimum
Isolation ......................................................... 60 VDC channel-to-channel, and
from computer
Digital Switch Output
Solid-state relay output channels.................... 24, each with two terminals isolated from
other channels
Relay type ...................................................... Normally open form A solid-state relays
Maximum switching voltage
AC............................................................. 30 VRMS (42 V peak)
DC ............................................................ 60 VDC
Maximum switching capacity, 25 °C.............. 120 mA

Common-mode isolation ............................... 60 VDC or 30 VRMS 42 V peak
channel-to-channel and from computer
On resistance................................................. 35 W maximum
Off leakage current (maximum) ..................... 200 nA
Relay set time (maximum) .............................. 3.0 ms
Relay reset time (maximum) ........................... 3.0 ms
Power-on state............................................... Relays open
Overcurrent protection on outputs ................ 260 mA, typical
Power Requirement
+5 VDC (±5%) ............................................... 500 mA, maximum
Power available at I/O connector................... +4.5 to +5.25 VDC, fused at 1 A
Physical
Dimensions (not including connectors)
PCI-6527 ................................................... 17.5 by 10.7 cm (6.9 by 4.2 in.)
PXI-6527.................................................... 16 by 10 cm (6.3 by 3.9 in.)
I/O connector................................................ 100-pin female 0.050 Series D-type
Environment
Operating temperature.................................. 0 to 50 °C
Storage temperature...................................... -20 to 70 °C
Relative humidity ........................................... 10% to 90%, noncondensing

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