46
No. 99MBC139A
4 Data Output
4.1.5 Timing Chart
■When power is ON
Initialization complete
(Start display, counter, and I/O input.)
Power supply
(10 V–27 V DC)
(internal initialization processing)
Max. 4 s
■Regarding input signals (1/2 SEL, CLEAR, HOLD and PRESET)
Ensure the duration of input signals is at least 25 ms.
When inputting input signals in succession, ensure at least a 25-ms interval between one input signal
and the next.
Input
signals
Min. 25 ms Min. 25 ms
●
1/2 SEL
1/2 SEL
Max. 25 ms
Min. 25 ms
Ch. 1 Max. 25 ms Ch. 2
●
CLEAR
CLEAR
Max. 25 ms
Min. 25 ms
Peak clear
●
HOLD
HOLD
Counter display value
Min. 25 ms
Max. 25 ms
Internal counter latched and counter display value displayed.