Rohde & Schwarz EVSF1000, User Manual

Page: 84 / 295

Numeric Measurement Modes
R&S
®
EVSF1000
84 User Manual 1178.6410.02 ─ 05
If the COM Analysis option (R&S EVSG-K6) is installed, signals from VHF/UHF com-
munication channels can be analyzed with the R&S EVSF1000. Very high frequency
(VHF) and ultrahigh frequency (UHF) communication is used for air traffic control (ATC
COM), for example.
The COM mode can be used to analyze both the civil aircraft band and military fre-
quencies, with channels spaced at 25
kHz or 8.33 kHz.
The R&S EVSF1000 can perform COM measurements on signals containing one or
two carriers (see Chapter 6.1.4.1, "Channel and Frequency Configuration" ,
on page 49). It assumes a 1000 Hz test tone is being sent.
Remote command:
MODE_COM
on page 237
6.4.1 COM Measurement Results
The COM measurement provides the following results. For measurements on two fre-
quencies, the results for the individual frequencies and the sum of both are displayed.
You can display graphical results directly from the COM mode by selecting the softkey
in the "Meas" menu. In this case, the settings for the current measurement are applied
to the graphical results.
To return from the graphical results to the COM mode, select "Return" ([F8]).
For details on the graphical results, see:
●
Chapter 7.1, "RF Spectrum Mode (Option R&S EVSG-K10)" , on page 93
●
Chapter 7.2, "IF Spectrum Mode (Option R&S EVSG-K10)" , on page 97
●
Chapter 7.3, "AF Spectrum Mode (Option R&S EVSG-K11)" , on page 102
●
Chapter 7.4, "AF Time Domain Mode (Option R&S EVSG-K12)" , on page 107
Remote command:
MODE_COM
on page 237
● RF Level and Frequency Display ............................................................................84
● IF Spectrum Preview ...............................................................................................86
● COM Main View ...................................................................................................... 86
● COM Recording View ..............................................................................................88
6.4.1.1 RF Level and Frequency Display
The measured RF power and frequency of the input signal is displayed both numeri-
cally and graphically.
COM Mode (Option R&S EVSG-K6)