Appendix A
Specifications
©
National Instruments Corporation
A-7
Stability
Offset temperature coefficient ............... ±50 µV/°C
Gain temperature coefficient.................. ±25 ppm/°C
Digital I/O
Number of channels ............................... 8 input/output
Compatibility ......................................... TTL/CMOS
DIO<0..7>
Digital logic levels
Power-on state ........................................ Input (High-Z),
50 k
Ω
pull up to +5 VDC
Data transfers ......................................... Programmed I/O
Timing I/O
Number of channels ............................... 2 up/down counter/timers, 1
frequency scaler
Resolution
Counter/timers ................................ 24 bits
Frequency scalers............................ 4 bits
Compatibility ......................................... TTL/CMOS
Level
Min
Max
Input low voltage
Input high voltage
Input low current (V
in
= 0 V)
Input high current (V
in
= 5 V)
0 V
2 V
—
—
0.8 V
5 V
–320
µ
A
10
µ
A
Output low voltage (I
OL
= 24 mA)
Output high voltage (I
OH
= 13 mA)
—
4.35 V
0.4 V
—