Agilent Technologies Agilent 86120C manual For 30 or 40 seconds

Programming Commands

SENSe Subsystem

	DATA?
	Queries the time domain samples of the input laser line.
Syntax	:SENSe:DATA?
Attribute	Preset State: none
Summary	SCPI Compliance: instrument specific
	Query Only
Description	Be prepared to process a large amount of data when this query is
	sent. The amount of data returned depends on the measurement
	update state of the instrument which is set using the resolution argu-
	ment of an instrument function. Refer to “Measurement Instructions”
	on page 4- 15.
	When NORMAL measurement update is specified, over 2,200 kilobytes
	of data (217 values) can be returned to the computer. When FAST mea-
	surement update is specified, over 1,100 kilobytes of data (216 values)
	can be returned.
	The floating point values are scaled from 1.000 to 1.999756 (1 + 4095/
	4096). Amplitude values are not calibrated.
	The input laser line(s) generate an interference pattern on the photo-
	detector as a function of the Michelson interferometer optical path
	delay. The time domain data is sampled at uniform optical path delay
	increments of the reference laser wavelength, or 0.632991 microns.
	When NORMAL measurement update is selected, the first data value is
	sampled at –41.48 mm optical path delay, and the last value is sam-
	pled at +41.48 mm optical path delay. When FAST measurement update
	is selected, the first data value is sampled at +20.74 mm optical path
	delay, and the last value is sampled at –20.74 mm optical path delay.
	The data value that corresponds to zero optical path delay is approxi-
	mately, but not exactly, located in the center of the time domain data.
	If your program is aborted or interrupted after sending this query, the
	Agilent 86120C continues to process the data but does not place it in
	the output buffer. Because of the amount of data processed, the
	instrument will not respond to any new commands in its input buffer
	for 30 or 40 seconds.

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