GW Instek GLC-9000 User Manual - Manual (Page 171)

EXTERNAL I/O
171
Timing Description
When the
KEYLOCK
signal is low, the external control (EXT-I/O) signal
can be enabled, after which a panel setting ( LOAD0 ~ LOAD4 ) can be
loaded and the START signal can then be pulsed low to start automatic
measurement. The timing chart of the output signals is shown below:
Description Minimum time
T1 Measurement Start time (pulse width) 1ms
T2 Automatic Measurement time 2s
T3 Wait time before measurement 1s
T4 Measurement time 1s