6100B/6105A
Users Manual
5-40
percentage of the total RMS voltage signal.
The query version of this command will return the present modulation depth value. The
returned number will be in standard scientific format (15.1 % would be returned as
1.51E1).
SOURce:PHASe<x>:VOLTage:FLICker:FREQuency(?) <dnpd>
This command sets the specified phase’s voltage channel flicker modulation frequency.
The <dnpd> is a number, which sets the required modulation frequency, expressed in Hertz.
The query command will return the present modulation frequency value. The returned
number will be in standard scientific format (440.0Hz would be returned as 4.40E2).
[SOURce]:PHASe<x>:VOLTage:FLICKer:FREQuency:UNIT(?) <cpd> { HZ | CPM }
This command selects the units for change rate:
• Hz - will set the change rate to Hertz.
CPM - set the change rate to Changes per Minute.
The query command will return HZ or CPM.
Note
On changing the units, the change rate will return to its default value of 1
CPM or 0.5 Hz depending on the unit selected.
Note
The "UNIT:FLICker:VOLTAge:FREQuency(?) <cpd> {HZ|CPM}" command
is now depreciated as it only affects Channel 1.
SOURce:PHASe<x>:VOLTage:FLICker:PST?
This query only command will return the present PST value. The returned number will be in
standard scientific format (1.82 would be returned as 1.82E0).
SOURce:PHASe<x>.:VOLTage:FLICKer:SHAPe(?)<cpd>{RECTangular|
SINusoidal|SQUare}
This command selects the specified phase’s voltage channel flicker modulation shape.
• RECT will set the modulation waveform to be rectangular.
• SIN will set the modulation waveform to be sinusoidal.
• SQU will set the modulation waveform to be square.
The query command will return SIN if the modulation shape is sinusoidal etc.
SOURce:PHASe<x>:VOLTage:FLICker:DUTY(?) <dnpd>
This command sets the specified phase’s voltage channel flicker duty cycle value for
rectangular modulation.
The query command will return the present duty cycle value. The returned number will be
in standard scientific format (10.55 would be returned as 1.055E1).
5-60. Extended Flicker Sub-System
The extended flicker sub-system allows the generation of signals conforming to the flicker-
meter test scenarios described in IEC 60000-4 section 4.3.3 to 4.3.7.
When one of the extended functions is active, it will over-ride the existing behaviour of the
phenomena selected for the voltage channel of the passed phase (the current channel will be
unaffected), the original settings will be restored on disabling the extended function.