R&S ESCI MKR – Analyzer
1166.6004.12 4.123 E-1
SIGNAL
COUNT
The SIGNAL COUNT softkey switches the frequency counter on/off.
The frequency is counted at the position of the reference marker (MARKER
1). The sweep stops at the reference marker until the frequency counter has
delivered a result. The time required for a frequency measurement depends
on the selected frequency resolution. The resolution is set in the side menu.
If no marker is enabled when the SIGNAL COUNT softkey is pressed,
MARKER 1 is switched on and set at the largest signal.
In addition, the SIGNAL COUNT function is displayed in the marker info field
on the screen with [Tx CNT].
MARKER 1 [T1 CNT]
23.4567891 MHz
-27.5 dBm
Switching the SIGNAL COUNT function off is accomplished by pressing the
softkey again.
IEC/IEEE-bus command: CALC:MARK1:COUN ON;
CALC:MARK:COUN:FREQ?
MARKER NEXT menu
The resolution of the frequency counter is set in the NEXT menu of the MARKER menu. R&S ESCI
offers counter resolutions between 0.1 Hz and 10 kHz.
MARKER
CNT RESOL
10 kHz
CNT RESOL
1 kHz
CNT RESOL
100 Hz
CNT RESOL
10 Hz
CNT RESOL
1 Hz
CNT RESOL
0.1 Hz
The CNT RESOL ... softkeys select the counter resolution. They are selection
switches, i.e. only one of the can be active at any one time.
The marker stop time, ie the frequency measurement time, depends on the
selected resolution.
IEC/IEEE-bus command: CALC:MARK1:COUN:RES <value>
Measurement example:
The frequency of a CW signal is to be determined by means of the frequency
counter with a resolution of 10 Hz.
[PRESET] R&S ESCI is set to the default setting.
[MARKER] MARKER 1 is switched on and set to the maximum value
of the displayed spectrum.
[SIGNAL
COUNT] The frequency counter is switched on. R&S ESCI counts
the frequency of the signal at the marker position with a
resolution of 1 kHz. The counted frequency is indicated in
the marker info field.
[NEXT] Changes to the submenu for setting the counter resolution.
[CNT RESOL
10 Hz] The frequency counter resolution is increased to 10 Hz.
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