Sinking Digital Input Module Operating Instructions and Specifications

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 time
1
......................................... 0 μs min
Setup time
2
........................................ 1 μs min
Update/transfer time
3
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.