National Instruments NI 9425 User Manual
Page 12
NI 9425 Operating Instructions and Specifications
12
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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.