Specifications

Chapter 5 109
Measurement Start and Detection of Measurement End
Measurement Trigger (Measurement Start)
5. Measurement Start and Detection of Meas. End
Waiting for Trigger State (Trigger Detection State)
When a trigger is made (detected) or the command for TRIG on page 525 is executed
during Waiting for trigger, the trigger system transits to the Measurement state and
measurement (sweep) starts. How a trigger is made depends on the trigger source setting.
Use the following GPIB command to set the trigger source.
• TRIG:SOUR on page 526
Use the following GPIB command to set the trigger detection points.
• TRIG:EVEN on page 525
NOTE Even with sweep averaging set to enabled and the trigger detection point set to “for each
sweep,” by making a trigger first or by executing the
TRIG command, sweep is repeated
until the number of times specified for sweep averaging is completed.
Trigger source setting How to make a trigger
Internal trigger (INT) An internal trigger is made automatically.
External trigger (EXT)
*1
When a trigger signal is input via the EXT
TRIGGER connector on the rear panel, a trigger is
made.
GPIB trigger (BUS) When *TRG on page 284 is executed, a trigger is
made.
Manual trigger (MAN) When the [Trigger] key is pressed on the front panel,
a trigger is made.
*1. When an external trigger is selected, the command for TRIG:SLOP on page 526 can
be used to set the polarity (positive/negative) of a trigger signal input through the EXT
TRIGGER connector.
Trigger detection points Description
For each sweep When a trigger event is detected, sweep is performed
once. If sweep averaging is enabled, sweep is
performed the same number of times as that of sweep
averaging.
For each measurement point When a trigger event is detected, measurement is
performed at each measurement point.
For each segment When a trigger event is detected during segment
sweep, sweep is performed for each segment.