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4 - Front Panel Operation
54
Note that phase synchronization is referenced to an internal phase signal. The output of the unit is
normally offset by 0° with respect to this internal reference. Because synchronized transient events
always occur with respect to the internal reference, the output will normally be in phase with the value
programmed for phase synchronization. (The Phase command can be used to change the offset of the
output with respect to the internal phase reference.)
Figure 4-7. Trigger Delays and Phase Synchronization
Example Display
j This example uses the default trigger parameters. First, access the Voltage
menu and program the immediate and triggered voltage levels, followed by
the voltage transient mode.
Then press Trigger Control and Enter, followed by Shift Trigger.
VOLT 120
VOLT:T 150
VOLT:M STEP
INIT:IMMED
ô
In this example, you will set a trigger delay. First, access the Voltage menu
and program the immediate and triggered voltage levels, followed by the
voltage transient mode.
Press Trigger Control. Then press ô until you access the delay parameter.
On the Entry keypad, press . 0 1 6 7 Enter.
Then press Trigger Control and Enter, followed by Shift Trigger.
VOLT 120
VOLT:T 150
VOLT:M STEP
DELAY 0
DELAY .0167
INIT:IMMED
í
This example uses the phase sync mode with no delay, but synchronized at 90.
First, access the Voltage menu and program the immediate and triggered
voltage levels, followed by the voltage transient mode.
Press Trigger Control. Press ô until you access the delay parameter. If
necessary, set it to 0. Press ô until you access the sync source command. On
the Entry keypad, press ° to obtain PHASE. Press Enter.
Access the Trigger Control menu again and press ô to access the sync phase
reference parameter. On the Entry keypad, program a 90° phase reference by
entering 9 0 Enter.
Then press Trigger Control and Enter, followed by Shift Trigger.
VOLT 120
VOLT:T 150
VOLT:M STEP
DELAY 0
SYNC:SOUR PHASE
SYNC:PHAS 90
INIT:IMMED
1
2
3
0.0167
0.000
0
90
Trigger
VOLT T level
VOLT level
VOLT T level
VOLT level
VOLT T level
VOLT level