VXI VT1538A user manual SOURcePULSePERiod?, SOURcePULSeWIDTh

Usage SOUR:PULS:PER .005,(@140)	set PWM pulse train to 200 Hz
	on channel 40

SOURce:PULSe:PERiod?

SOURce:PULSe:PERiod? (@<channel>) returns the fixed pulse period value on the pulse width modulated pulse channel in <channel>.

Parameters

Parameter	Parameter	Range of	Default
Name	Type	Values	Units
channel	string	100 - 163	none

Comments • If the channels specified are not on a Frequency/Totalize SCP, an error will be generated.

•Returned Value: numeric period. The type is float32.

•Send with VXIplug&play Function: hpe14XX_cmdReal64_Q(...)

SOURce:PULSe:WIDTh

SOURce:PULSe:WIDTh <pulse_width>,(@<ch_list>) sets the fixed pulse width value on the frequency modulated pulse channels in <ch_list>.

Parameters

Parameter	Parameter	Range of	Default
Name	Type	Values	Units
pulse_width	numeric (float32)	7.87E-6 to 7.8125E-3	seconds
		(238.4E-9 resolution)
ch_list	string	100 - 163	none

Comments • If the channels specified are not on a Frequency/Totalize SCP, an error will be generated.

•*RST Condition: SOUR:FM:STATE OFF and SOUR:PULM:STATE OFF

•Related Commands: SOUR:PULM:STATE, SOUR:PULS:POLarity

•The variable frequency control for this channel is provided by the algorithm language. When the algorithm executes an assignment statement to this channel, the value assigned will be the frequency setting. For example:

O143 = 2000 /* set channel 43 to 2KHz */

Agilent E1538A Enhanced Frequency/Totalize/PWM SCP 71