Trigger delay; 90 degree phase synchronization
Voltage
VOLT:M STEP VOLT 120 VOLT:T 150
Trigger Control
DELAY .0167 SYNC:SOUR PHAS SYNC:PHAS 90 INIT:IMMED
Shift |
| Trigger |
|
|
|
When these commands are sent, the voltage amplitude changes at the next 90 degree phase angle that occurs after the .0167 second delay has expired, following the receipt of a trigger.
0
90
TRIG level
VOLT level
Trigger | Delay |
More about the trigger system
In the previous examples, a front panel trigger is used to generate the output transients. The trigger is shown occurring at 270 degrees but actual triggers may occur at any phase. Delay and phase synchronization however, will occur as programmed.
Note that trigger system used in the ac source provides great flexibility in generating triggers. The following figure is a simplified model of the trigger system. A complete discussion of the capabilities of the trigger system is found in the ac source Programming Guide.
IDLE STATE
INIT:IMMED
INITIATED STATE
TRIGGER RECEIVED
DELAYING STATE
DELAY COMPLETED
WAIT FOR SYNC STATE
PHASE ANGLE OCCURS
OUTPUT CHANGES
16
