Limits – Agilent Technologies Signal Analyzer N9030a User Manual
Page 793
6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Meas Setup
Voltage Avg
In this Average type, all filtering and averaging processes work on the voltage of the envelope of
the signal. This scale is good for observing rise and fall behavior of AM or pulse-modulated
signals such as radar and TDMA transmitters, but its response to noise-like signals is 1.049 dB
lower than the average power of those noise signals. This is compensated for in the Marker Noise
function.
In the equation for averaging on this scale (below), K is the number of averages accumulated. (In
continuous sweep mode, once K has reached the Average/Hold Number, K stays at that value.)
New avg = 20 log ((1/K)((K–1)(10Old avg/20)+10New data/20))
Equation assumes all values are in the decibel scale.
Key Path
Meas setup, Average Type
Example
AVER:TYPE SCAL
Notes
See
Couplings
See
Readback
Pwr (RMS)
Initial S/W Revision
Prior to A.02.00
Limits
The limits key opens a menu of softkeys to control the limits for the current measurement. Limits
arrays can be entered by the user, sent over SCPI, or loaded from a file.
Key Path
Meas Setup
Dependencies
This key will only appear if you have the proper option installed in your instrument.
Preset
Limits are turned off by a Preset, but the Limits arrays (data) are only reset (deleted) by Restore
Mode Defaults. They survive shutdown and restarting of the analyzer application, which means
they will survive a power cycle.
Initial S/W Revision
A.02.00
Select Limit
Specifies the selected limit. The term “selected limit” is used throughout this document to specify
which limit will be affected by the functions.
Remote Language Compatibility Measurement Application Reference
793