Measurement Computing BTH-1208LS-OEM - Manual (Page 22)

BTH-1208LS-OEM User's Guide Specifications
22
External trigger
Table 12. Digital trigger specifications
Parameter Specification
Trigger source External digital; TRIG terminal
Trigger mode Software configurable for edge or level sensitive, rising or falling edge, high or low
level.
Trigger latency 10 µs max
Trigger pulse width 1 µs min
Input type
Schmitt trigger, 47 kΩ pull-down to ground
Schmitt trigger hysteresis 0.76 V typ
0.4 V min
1.2 V max
Input high voltage threshold 1.74 V typ
1.3 V min
2.2 V max
Input high voltage limit 5.5 V absolute max
Input low voltage threshold 0.98 V typ
0.6 V min
1.5 V max
Input low voltage limit –0.5 V absolute min
0 V recommended min
External clock input
Table 13. External clock input specifications
Parameter Specification
Terminal name AICKI
Terminal type Input
Input clock rate 50 kHz, max
Clock pulse width 1 µs min
Input type Schmitt trigger, 47
kΩ pull-down to ground
Schmitt trigger hysteresis 0.76 V typ
0.4 V min
1.2 V max
Input high voltage threshold 1.74 V typ
1.3 V min
2.2 V max
Input high voltage limit 5.5 V absolute max
Input low voltage threshold 0.98 V typ
0.6 V min
1.5 V max
Input low voltage limit –0.5 V absolute min
0 V recommended min