Appendix A Specifications for SCXI-1120D
SCXI-1120/D User Manual A-8 www.natinst.com
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
Safety
Designed in accordance with IEC 61010-1, UL3111-1, and
CAN/CSA C22.2 No. 1010.1 for electrical measuring and test equipment.
Approved at altitudes up to 2000 m
Installation Category II
Pollution Degree 2
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