NI 9425 Operating Instructions and Specifications 12 ni.com
I/O protection
Input voltage
8 channels....... .....................60 VDC max
32 channels......... .................30 VDC max
Reverse-biased voltage
8 channels......... ...................– 60 VDC max
32 channels.......................... –30 VDC max
Hold time1.........................................0 μs min
Setup time2........................................1 μs min
Update/transfer time3
cRIO-9151 R Series
Expansion chassis.......................8 μs max
All other chassis......................... 7 μs max
1 Hold time is the amount of time input signals must be stable after initiating a read
from the module.
2 Setup time is the amount of time input signals must be stable before reading from the
module.
3 The update/transfer time is valid when the module is used in a CompactRIO system.
When used in other systems, driver software and system latencies impact this time.