160 Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter
Using Scanner Interface
Timing Chart
9-
Timing Chart
Figure 9-3 shows the timing chart. The time periods of T1-T5 in the figure are 
described in the following table.
Figure 9-3  Timing chart of the scanner interface
Minimum value  Typical value 
T1 Trigger pulse width 1 µs -
T2
Trigger response time of 
/INDEX and /EOM
-60 µs
T3
Channel number input 
hold time
-0 µs
T4
Channel number input 
setup time
-0 µs
T5 Trigger wait time - 0 µs
e4981aue0014
EXT_TRIG
Ch(n)
Ch(n)     : Channel Number at Nth measurement
Ch(n+1) : Channel Number at (N+1)th measurement
Ch(n+1) : Channel Number at (N-1)th measurement
Ch(n+1)
Ch(n-1) Ch(n) Ch(n+1)
T1 T2 T3
T4
T5
/INDEX
/EOM
/Ch0 - /Ch7
/CH_VALID
E4981A Channel Setting