Agilent Technologies Signal Analyzer N9030a User Manual
Page 1156
6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Sweep/Control
Setting Sweep Time Rules to SA-Accuracy will result in slower sweep times than SA-Normal, usually
about three times as long, but with better amplitude accuracy for CW signals. The instrument
absolute amplitude accuracy specifications only apply when Sweep Time is set to Auto, and Sweep
Time Rules
are set to SA-Accuracy. Additional amplitude errors which occur when Sweep Time Rules
are set to SA-Normal are usually well under 0.1 dB, though this is not guaranteed. Because of the
faster sweep times and still low errors, SA-Normal is the preferred setting of Sweep Time Rules.
The third set of sweep time rules is called Stimulus/Response and is automatically selected when an
integrated source is turned on, such as a Tracking Generator or a synchronized external source.
The sweep times for this set of rules are usually much faster for swept-response measurements.
Stimulus-response auto-coupled sweep times are typically valid in stimulus-response
measurements when the system’s frequency span is less than 20 times the bandwidth of the
device under test. You can select these rules manually (even if not making Stimulus-Response
measurements) which will allow you to sweep faster before the “Meas Uncal” warning comes on,
but you are then not protected from the over-sweep condition and may end up with uncalibrated
results. However, it is commonplace in measuring non-CW signals such as noise to be able to get
excellent measurement accuracy at sweep rates higher than those required for CW signal accuracy,
so this is a valid measurement technique.
Auto
Sets the analyzer to automatically choose the Sweep Time Rules for the measurement.
Key Path
Sweep/Control, Sweep Setup, Sweep Time Rules
Remote Command
[:SENSe]:SWEep:TIME:AUTO:RULes:AUTO[:STATe] ON|OFF|1|0
[:SENSe]:SWEep:TIME:AUTO:RULes:AUTO[:STATe]?
Example
:SWE:TIME:AUTO:RUL:AUTO ON
Couplings
Set on Preset or Auto Couple
Preset
ON
Initial S/W Revision
Prior to A.02.00
SA - Normal
Chooses Sweep Time Auto Rules for optimal speed and generally sufficient accuracy.
Key Path
Sweep/Control, Sweep Setup, Sweep Time Rules
Example
:SWE:TIME:AUTO:RUL NORM
Dependencies
Not available (grayed out) when Source Mode=Tracking.
Couplings
Automatically selected unless Source is on
If directly selected, sets AUTO to Off
1156
Remote Language Compatibility Measurement Application Reference