Measurement Computing USB-PDISO8 - Manual (Page 19)

Chapter 4
Specifications
Typical for 25°C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Relay specification
Table 1. Relay output specifications
Number 8
Contact configuration 8 FORM C (SPDT) NO, NC and Common available at connector
Contact rating 6 amperes (A) @ 240 volts AC (VAC) or 28 volts DC (VDC) resistive
Contact resistance 100 milliohms (mΩ) max
Operate time 10 milliseconds(ms) max
Release time 5 ms max
Vibration 10 to 55 hertz (Hz) (Dual amplitude 1.5 millimeters (mm))
Shock 10 G (11 ms)
Dielectric isolation 500 V (1 minute)
Life expectancy 10 million mechanical operations, min
Power on RESET state Not energized. NC in contact to Common.
Isolated inputs
Table 2. Isolated input specifications
Number 8
Isolation 500 volts ( V)
Resistance 1.6 K ohms (Ω) min.
Input high: +5.0 VDC min or –5.0 VDC min
Input low: +1.5 VDC max. or –1.5VDC max.
DC
Input range: 30 VDC max
Input high: 6.0 V
rms
min (50-1000 Hz)
Voltage range
AC (with filter)
Input low: 1.5 V
rms
max (50-1000 Hz)
w/o filter 20 µs Response
w/ filter 5 ms
Time constant 5 ms (200 Hz)
Filter control Software programmable at each input.
Filters
Power-up /reset Filters off
4-1