8003 Precision Scalar Analyzer
3-30 Manual 20791, Rev. C, June 2001
3.3.19 Measurement Query Command Structure
OUTPUT, OP
Output Current Data Syntax:
OP hs Channel Specifier us modifier [us modifier]
Output Current Data:
One form of the OP verb defines a measured data output. The data captured will be the
data measured on the channel indicated by the channel specifier which follows the output
verb. The format of the measured data depends upon the measurement mode and the
output request. If the channel is making a swept measurement and the data returned
represents the measured trace, the format is:
data(freq min),data(freq n),...,data(freq max) EOL.
See the section describing the swept measurement verb SWP on page 3-54 for more
details. If the channel is making a CW measurement and the data represents the
measured data point, the format is dataEOL.
See the section describing the CW power measurement verb POWER on page 3-36 for
more details. If the request is for cursor power measured at the cursor frequency, the
format definition can be found on page 3-31 using the CURP modifier.
Output Current Data Specifiers:
Channel Specifiers are 1, 2, 3, and 4
Output Current Data Modifiers:
This modifier defines the number of data items to be returned when the measured data is
requested for output to the host computer.
Modifier name: ITEMS
Modifier Syntax: ITEMS ds numerical value
valid numerical values: 1 to 512
assumed units: no units
This modifier is used if the channel is making a swept measurement. The format of the
returned data is detailed in the section describing the swept measurement verb SWP on
page 3-54.
This modifier is to specify that a service request be sent upon completion of the measure-
ment defined for this channel.
Modifier name: SRQ
Modifier Syntax: SRQ
Once the SRQ modifier is received, the 8003 will make the measurement specified for this
channel. If the number of averages defined for this channel has been satisfied, the event
complete bit is set in the external status register and the service request and the external
status bits are set in the instrument status byte.
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