Ceyear 4051 Series, User Manual

Page: 504 / 751

5 Menu
5.2. Description of menu
490
● Status saved: saved in the instrument status.
●
Remote Command:
:acpower:detector negative
:acpower:detector?
[Average ▶
Video Average]
●
Menu description: to set the detector command for the currently selected trace as Video Average. Also
called Logarithm Power Average Detector, i.e., take the logarithm power average value for all data
assigned to each trace point; earlier signal/spectrum analyzer generally displays the measurement trace of
logarithm scale, and all filtering and averaging are based on the logarithm power data; the trace is
generally called as video signal. After digital IF processing is adopted, to make measurement results
same as the earlier signal/spectrum analyzer, the video average detector function is added.
● Key path:
【
Trace
】
, [More 1/2
▶
], [Detector
▶
], [Trace Average
▶
], [Log-Pwr Avg] on the front panel.
● Status saved: saved in the instrument status.
● Remote Command:
:acpower:detector LOG
:acpower:detector?
[Average
▶
Power Average]
● Menu description: to set the detector command for the currently selected trace as Power Average. Also
called root mean square (RMS) detector. Calculate the root mean square of all sampling data assigned to
each trace point; the 4051signal/spectrum analyzer envelopes the detector for the RF input signal and
obtains linear voltage. After square these voltage values, take sum and divide the count of sampling data
points corresponding to each trace point. Finally, take square root. When the scale is logarithm, take 20
times of logarithm transformation for these RMS values (with 10 as base) and obtain the trace data. When
the scale type is linear, those RMS values are trace data.
●
Key path: 【 Trace 】 , [More 1/2 ▶ ], [Detector ▶ ], [Trace Average ▶ ], [Pwr Avg] on the front panel.
●
Status saved: saved in the instrument status.
● Remote Command:
:acpower:detector average or
:acpower:detector RMS
:acpower:detector?
[Average
▶
Average Voltage]
● Menu description: to set the detector command for the currently selected trace as Voltage Average. Also
called average (AVG) detector. Take linear average for all sampling data assigned to each trace point; the
4051 signal/spectrum analyzer envelopes the detector for the RF input signal and obtains linear voltage.
After summing those voltage values, divide the number of sampling data points corresponding to each
trace point. When the scale is logarithm, take 20 times of logarithm transformation for these RMS values