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Front Panel Operation - 4
45
Pulse Transient
In the following example, the output is four 83.3-millisecond, 120 Vrms pulses at 60 Hz. The figure
shows the trigger, pulse count, pulse period, and duty cycle.
NOTE: From the Output Menu, execute the *RST command to reset the ac source. This is
necessary because any previously programmed functions remain in effect until cleared.
Figure 4-5. Pulse Transients
Action Display
1.
Press Voltage to access the Voltage Menu. On the Entry keypad, press 1 0 2 Enter.
VOLT 102
2.
Press ô to access the triggered voltage command. On the Entry keypad, press 1 2 0
Enter.
VOLT 120
3. Access the Voltage Menu again and press ô to access the voltage mode command. On
the Entry keypad, press ¯ or ° to scroll through the mode parameters to obtain
PULSE and press Enter.
VOLT:M PULSE
4.
Press Pulse to access the Pulse Menu. From the Entry keypad, press
. 0 8 3 3 Enter to enter a pulse width of 83.3 milliseconds.
WIDTH .0833
5. Access the Pulse Menu and press ô to access the duty cycle command. From the Entry
keypad, press 3 3 Enter to change the duty cycle to 33%.
DCYCLE 33
6. Access the Pulse Menu and press ô to access the pulse count. On the Entry keypad,
press 4 and Enter.
COUNT 4
7.
Press Trigger Control and Enter to initiate the transient trigger sequence.
INIT:IMMED
8.
Press Shift Trigger. This sends the ac source an immediate trigger signal to generate
the four output pulses.
Note: The ac source output returns to 102 V at the completion of the output pulses.
102 V 60 HZ
On three-phase ac sources the voltage pulses are phase selectable. You can output a different voltage
pulse for each phase. To do this, use
Phase Select to first choose the desired phase, as previously
described in example 1 for setting the immediate output voltage.
120Vrms
Trigger
83.3ms
250ms
count = 4
102Vrms