Ametek BPS Series Programming Manual Instrukcja Użytkownika Pobierz pdf (Strona 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

1 2 ... 145 146 147 148 149 150 151 152 153 154 155 ... 225 226

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