R3131 Spectrum Analyzer Operation Manual
3.3 Menu Function Descriptions
3-18
3.3.3
CAL Key (Calibration)
This section describes the menu displayed when the SHIFT key and the 7 (CAL) key are pressed.
Cal All
Executes all calibration routines.
Total Gain
Measures the absolute error using a resolution bandwidth of 300
kHz, and the calibration signal output of both -15dBm and 1dB/
DIV.
CAUTION: Do not perform a PRESET operation (SHIFT, PRESET)
while calibrating the spectrum analyzer because this will
erase all calibration data.
Each Item
Changes the display to the Each Item menu.
IF Step Amp
Measures the IF Step AMP switching error and calibrates it.
RBW Switch
Measures the switching error for the IF Filter resolution
bandwidth and calibrates it.
Log Linear
Measures the linearity of the ordinate axis at a range of 10 dB/
DIV to 1 dB/DIV on the LOG scale and calibrates it.
AMPTD MAG
Measures the switching error at a range of 10 dB/DIV to 1 dB/
DIV on the LOG scale and calibrates it.
PBW
Measures PBW (noise power bandwidth) at a resolution
bandwidth range of 1 kHz to 1 MHz and calibrates it.
Freq Corr ON/OFF
Toggles the frequency correction function on or off.
ON:
Frequency characteristics are corrected.
OFF:
Turns the frequency correction function off.
Cal Corr ON/OFF
Toggles the calibration factor on or off.
ON:
The calibration factor is used.
OFF:
The calibration factor is not used.
Cal Sig Level ON/OFF
Toggles the calibration signal output level on or off.
ON:
Connects the calibration signal to the input part of the
spectrum analyzer. The calibration signal output level
can be set.
OFF:
Disconnects the calibration signal from the input part of
the spectrum analyzer.
Apr 10/98
