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• This command affects the period (and frequency) for all waveform
functions (not just pulse). For example, if you select a period using the
PULS:PER command and then change the function to sine wave,
the specified period will be used for the new function.
• Function Limitations: If you change to a function whose minimum
period is greater than that for a pulse waveform, the period is adjusted
to the minimum value allowed for the new function. For example,
if you output a pulse waveform with a period of 200 ns and then change
to the ramp function, the function generator will automatically adjust
the period to 5 µs (the lower limit for ramps). From the remote
interface, a "Settings conflict" error will be generated and the period
will be adjusted as described.
FUNCtion:PULSe:HOLD {WIDTh|DCYCle}
FUNCtion:PULSe:HOLD? [WIDTh|DCYCle]
Set the function generator to hold either pulse width or pulse duty cycle:
• WIDTh: The function generator holds the pulse width setting (in
seconds) constant as the period is varied. (Minimum width and edge
time restrictions apply.) If a command to set a duty cycle value is
received, the duty cycle is converted to the equivalent pulse width in
seconds. If Pulse Width Modulation (PWM) is turned on, the pulse
width is held, and the width deviation also is held, as the period is
varied. Duty cycle deviation commands are converted to width
deviation values.
• DCYCle: The function generator holds the pulse duty cycle setting (in
percent) constant as the period is varied. (Minimum width and edge
time restrictions apply.) If a command to set a pulse width value is
received, the width is converted to the equivalent duty cycle in
percent. If Pulse Width Modulation (PWM) is turned on, the pulse
duty cycle is held, and the duty cycle deviation also is held, as the
period is varied. Width deviation commands are converted to duty
cycle deviation values.
Note: The FUNC:PULS:HOLD command does not limit period settings.
The pulse width or duty cycle are adjusted if necessary to accommodate a
new period setting.
This command will cause the Width/Dty Cyc softkey in the pulse menu to
toggle its sense when appropriate. Also, changing the Width/Dty Cyc
softkey from the front panel will change the HOLD selection for subsequent
programmatic behavior.
Chapter 4 Remote Interface Reference
Pulse Configuration Commands
4
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