Agilent Technologies Signal Analyzer N9030a - Manual (Page 1134)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Source
As stated above, when the Source Mode is set to Tracking, the analyzer acquires control of the
source. When this happens the source is told to save its state and then perform a preset. Usually
both of these operations take very little time; however, on an N5172B or an N5182B, if many
Source real-time apps are in use, both save and preset can take several seconds. If it takes longer
than the analyzer expects to acquire control, you will see an error: “Source connection lost, check
interface connection”. If you see this error, and you are using an N5172B or an N5182B, you can
shorten the acquire time by presetting your MXG before attempting to use External Source Control.
Key Path Source
Scope Meas Global
Remote Command :INSTrument:SOURce[:SELect] TRACking|OFF
:INSTrument:SOURce[:SELect]?
Example :INST:SOUR TRAC
Dependencies Grayed out if no Source is selected, in this case go to the Select Source menu to choose,
configure and/or verify your source
Grayed out and forced to Off if either BBIQ or External Mixing are selected
Blanked in Modes that do not support a source
Grayed out in Measurements that do not support a source
Tracking is grayed out when Manual FFT is selected
Tracking is grayed out when the RF Preselector is on (in models which support the RF
Preselector).
Couplings When RF Output is turned On, Source Mode is set to Tracking. When Source Mode is turned
Off, RF Output is turned Off.
Whenever you switch to an application (Mode) in which the Source Mode was previously set to
Tracking, it is again set to Tracking. That is, the last setting of the Source Mode is remembered
when you leave an application (Mode) and restored when you return
Source Mode is forced to Tracking when the RF Output is turned on if the measurement supports
Tracking
If Source Mode is set to Tracking, then it is forced to Off when you select a measurement that
does not support Tracking.
If Source Mode is set to Tracking, then it is forced to Off when you turn on the RF Preselector (in
models which support the RF Preselector).
Whenever the Source Mode is set to Tracking, the analyzer acquires the Source. Similarly, the
Source is released whenever the Source Mode is set to Off. This is true whether the Source
Mode was set directly by you, was set indirectly through a coupling, if you switched to an
application (Mode) that had previously been set to Tracking, or if you switched to an application
(Mode) in which the Source Mode is not set to Tracking.
For an external source, “acquiring the source” involves contacting the external instrument over
the remote interface (which puts it into Remote) and taking control of it.
1134 Remote Language Compatibility Measurement Application Reference