Agilent Technologies Agilent 33500 Series, Руководство по эксплуатации и обслуживанию, Страница: 221 / 429

FUNCtion Subsystem
Duty Cycle
≥
[(0.8 x Leading Edge Time) + (0.8 x Trailing Edge Time) ]/ Period x 100
and
Duty Cycle
≤
[1 – [(0.8 x Leading Edge Time) + (0.8 x Trailing Edge Time) ]/ Period] x 100
[SOURce[1|2]:]FUNCtion:PULSe:HOLD {WIDTh|DCYCle}
[SOURce[1|2]:]FUNCtion:PULSe:HOLD?
Sets the pulse waveform parameter (either pulse width or duty cycle) to be held constant as other parameters are var-
ied.
Parameter Typical Return
{WIDTh|DCYCle}, default WIDTh WIDT or DCYC
Set the instrument to hold duty cycle for pulse waveforms:
FUNC:PULS:HOLD DCYC
l
WIDTh: the instrument holds the pulse width setting (in seconds) constant as the period is varied. If a command
to set a duty cycle value is received, the duty cycle is converted to the equivalent pulse width. If pulse width mod-
ulation (PWM) is turned on, the pulse width and width deviation are held as the period is varied. Duty cycle devi-
ation commands are converted to width deviations.
Minimum width and edge time restrictions still apply. May cause a change in the selected edge times, pulse width,
or both.
l
DCYCle: the instrument holds the pulse duty cycle setting (in percent) constant as the period is varied. If a com-
mand to set a pulse width value is received, the width is converted to the equivalent duty cycle. If pulse width mod-
ulation (PWM) is turned on, the pulse duty cycle and the duty cycle deviation are held as the period is varied. Width
deviation commands are converted to duty cycle deviation values.
Minimum width and edge time restrictions still apply. May cause a change in the selected edge times, duty cycle, or
both.
The FUNCtion:PULSe:HOLD command does not limit period settings. The pulse width or duty cycle
may be adjusted if necessary to accommodate a new period setting.
[SOURce[1|2]:]FUNCtion:PULSe:PERiod {< seconds >|MINimum|MAXimum}
[SOURce[1|2]:]FUNCtion:PULSe:PERiod? [{MINimum|MAXimum}]
Sets the period for pulse waveforms. This command is paired with the FREQuency command; the one executed last
overrides the other, as frequency and period specify the same parameter.
Parameter Typical Return
From reciprocal of instrument's maximum frequency up to 1,000,000 s. Default 1
ms +2.000000000000000E-
07
Set the period to 500 ms:
FUNC:PULS:PER .5
or
FUNC:PULS:PER 500 ms
220 Agilent 33500 Series Operating and Service Guide