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Appendix A
Specifications
©
National Instruments Corporation
A-3
Digital Signals
Absolute max voltage input rating ......... 5.5 V with respect to DGND
Digital input specifications (referenced to DGND)
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
µ
A max
Digital output specifications (referenced to DGND)
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
Filters
Cutoff frequency (–3 dB) ....................... 2 Hz
NMR (60 Hz) ......................................... 40 dB
Step response
To 0.1%........................................... 1 s
To 0.01% ......................................... 10 s
Stability
Recommended warm-up time ................ 20 min.
Offset temperature coefficient ............... 1
µ
V/
°
C
Gain temperature coefficient.................. 10 ppm/
°
C
Physical
Dimensions............................................. 115 by 273 mm
(4.54 by 10.75 in.)
I/O connector.......................................... 50-pin male ribbon cable
rear connector
96-pin male DIN C front
connector