Keithley 6487 Reference Manual page 114

7-6 Triggering
Trigger-In source — The Trigger-In control sources are explained as follow:
•
•
Trigger delay
A programmable delay is available after event detection. It can be set manually (0 to
999.9998 seconds) or an auto delay can be used. With auto delay selected, the Model 6487
automatically sets delay according to range. The auto delay settings are listed in
Immediate (TRIGger:SOURce IMMediate) — Event detection for the trigger
layer is satisfied immediately allowing operation to continue to perform a
measurement.
TLink (TRIGger:SOURce TLINk) — Event detection for the trigger layer is satis-
fied when an input trigger via the TRIGGER LINK connector is received by the
Model 6487. Note that if the source bypass is set to ONCE (TRIGger:DIRection
SOURce), operation will loop around the source detector on the initial pass
through the arm layer. Detection for each subsequent pass is satisfied by an input
trigger. The bypass resets when the Model 6487 leaves the trigger layer.
Table 7-1
Auto delay settings
Range
2nA
20nA
200nA
2μA
20μA
200μA
2mA
20mA
Delay
10ms
10ms
10ms
10ms
5ms
5ms
1ms
0.5ms
Model 6487 Reference Manual
Table 7-1.