Appendix A
Specifications for SCXI-1120
©
National Instruments Corporation
A-3
Input protection (continuous)................. 250 V
rms
max
1
Output protection ................................... Continuous short-to-ground
Power consumption................................ 170 mA at ±18.5 V
50 mA at ±5 V
Digital I/O
Absolute maximum voltage
input rating ............................................. 5.5 V with respect to DIG GND
Digital input specifications (referenced to DIG GND):
V
IH
input logic high voltage............ 2 V min
V
IL
input logic low voltage ............. 0.8 V max
I
I
input current leakage ................... ±1 µA max
Digital output specifications (referenced to DIG GND):
V
OH
output logic high voltage ........ 3.7 V min at 4 mA max
V
OL
output logic low voltage .......... 0.4 V max at 4 mA max
Physical
Dimensions............................................. 3.1 by 17.3 by 20.3 cm.
(1.2 by 6.8 by 8.0 in.)
Connectors ............................................. 50-pin male ribbon-cable rear
connector, 32-pin DIN C male
front connector(18-screw
terminal adapter available)
Environment
Operating temperature ........................... 0 to 50 °C
Storage temperature .............................. –20 to 70 °C
Relative humidity ................................... 5% to 90% noncondensing
1
Module designed to meet IEC-1010 standard for double or reinforced insulation for category II pollution degree 2
