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© National Instruments Corporation A-1 6527 User Manual
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Specifications
This appendix lists the specifications for the 6527 devices. These
specifications are typical at 25 °C unless otherwise noted.
Digital I/O
PCI/PXI-6527......................................... 24 optically-isolated digital input
channels and 24 solid-state relay
output channels
Isolated Inputs
Number of input channels......................24, each with its own ground
reference isolated from other
channels
Max input voltage ..................................28 VDC
Digital logic levels
Input current
5 V inputs........................................1.5 mA/channel max
24 V inputs......................................8 mA/channel max
Isolation.................................................. 60 VDC channel-to-channel and
from computer ground and V
CC
Relay Outputs
Number of channels ...............................24, each with two terminals that
are isolated from other channels
Relay type ..............................................Normally open form A solid-state
relays
Level Min Max
Input low voltage 0 VDC 1 VDC
Input high voltage 2 VDC 28 VDC