Instruction manual

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When an AMP header with an argument of 0 is used, the waveform will stop and drop to zero
volts at the point specified by the PHZ A value.
The following ASCII string will stop the waveform at 0 degrees for .01 seconds and return to
115 volts:
PHZ A 0 AMP 0 DLY .01 VAL 115
The STP header is used to identify the following argument numeric value as the increment or
decrement value for a FRQ, CRL, AMP, PHZ, THD, or CAL ramp.
The following example will ramp all outputs from 130 volts in 1.5 volt/.5 sec. steps to 10 volts.
AMP130 DLY.5 STP1.5 VAL10
The header VAL is used to identify the following numeric argument as the final Value of a
ramp or step. If the VAL argument is larger than the initial value for the parameter to be
ramped, the ramp will increment with step size defined by STP and DLY. With the VAL
argument less than the initial value, the ramp will decrement from the initial parameter.
A ramp or step operation can be started at anytime by the GPIB message Group Execute
Trigger (GET). The operation will wait for the Group Execute Trigger when the TRG header is
added to the string.
The following example will decrement the output amplitude of phase A only from 120 in .1
volt/.2 sec steps to 100 volts after a Device Trigger.
AMP A 120 DLY.2 STP.1 VAL100 TRG
The following example will simultaneously ramp the Frequency from 50 to 500 Hz at a rate of
1 Hz per second and the Amplitude from 5 to 230 volts in increments of .5 volts per step:
RNG270 AMP5 FRQ50 STP1 DLY1 VAL500 STP.5
A GPIB Service Request will be generated at the end of a ramp if SRQ2 is included in the
setup string.
A ramp or step operation can be stopped at anytime by the GPIB Group Execute Trigger.
3.7.5.6.EXTERNAL SYNCHRONIZATION (SNC)
The SNC header is used with the EXT argument to synchronize the phase A output to an
external sync input. The phase A output will be phase referenced to the sync input with the
displacement equal to the PHZ A value.