AMETEK BPS Series Programming Manual - Manual (Page 150)

AMETEK Programmable Power BPS / MX / RS Series SCPI Programming Manual
150 Manual P/N 7003-961 Rev AA
6.4.2 Step and Pulse Transients
Step 1 : Set the functions that you do not want to generate transients to FIXed mode. A
convenient way to do this is with the *RST command. Then set the mode of the function that
will generate the transient to STEP or PULSe as required. For example, to enable the
voltage function to generate a single triggered output voltage change, use:
*RST
VOLTage:MODE STEP
Step 2 : Set the triggered level of the function that will generate the transient. For example, if
the previously programmed voltage function is going to step the output voltage amplitude to
135 volts upon reciept of a trigger, use:
VOLTage:TRIGger 135
Step 3 : Select the trigger source that will generate the trigger. For example, to select the
Immediate use:
TRIGger:SOURce IMM
Trigger sources are discussed in detail under “Triggering Output Changes”
Step 4 : Only perform this step if you have selected PULSE as the transient mode in Step 1.
Specify the pulse count, the pulse period, and then either the duty cycle or the pulse width
using the following commands:
PULSe:COUNt 1 specifies 1 output pulse
PULSe:PERiod 1 specifies a pulse period of 1 second
PULSe:DCYCle 50 specifies a duty cycle of 50%
PULSe:WIDTh .5 specifies a pulse width of .5 seconds (not necessary in this case
since a duty cycle has already been specified)
Step 5 : Initiate the transient trigger system to enable it to receive a trigger. To enable the
trigger system for one transient event use:
INITiate
Example
The following example programs a voltage dropout for 2 cycles of a 120 volt, 60 Hz output.
The dropout begins at the positive peak of the output voltage waveform (90 degrees phase)
and is triggered by IEEE-488 bus trigger.
*RST Begin at power-on state
VOLT 120 Set initial output voltage (immediate-level)
FREQ 60 Set initial output frequency
OUTP ON Enable the output
VOLT:MODE PULS Enable output to generate pulses when triggered
VOLT:TRIG 0 Set the voltage dropout (triggered level)
PULS:WIDT .03333 Set pulse width for 2 periods
PULS:PER 0.0667 Set pulse period for 4 cycles
TRIG:SOUR BUS Respond to IEEE-488 bus triggers
TRIG:SYNC:SOUR:PHAS Synchronize triggers to internal phase reference
TRIG:SYNC:PHAS 90 Sets internal phase reference point to 90 degrees
INIT Set to Wait-for-trigger state
<device trigger> Send the IEEE-488 bus trigger