Chapter 4 Channel Power Operation
Setting up the level parameters
9102 Handheld Spectrum Analyzer Software version 5.31
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The attenuation setting can be coupled to automatically follow the
reference level setting. For reference levels of –20 dBm and lower, the
attenuation is set to 10 dB; the maximum attenuation is 50 dB.
Attenuation or gain due to external coupling can be compensated by
frequency-dependent coupling factors, so that the displayed measure-
ment values reflect the power at the device under test.
Setting the reference
level
1 In the main menu, push the Ref. softkey or select Level followed by
Ref. Alternatively, push the REF function key.
The Reference Level input field opens.
2 Enter the new reference level either using the numeric keys,
closing the input field with the appropriate enter key, or with the
U
P/DOWN arrow keys.
The new reference level appears at the top of the vertical axis. The
reference is based on the actually set output power.
Setting the hardware
attenuation
1 In the main menu, push the Attenuation softkey.
The Attenuation input field opens.
2 Enter a new attenuation value in the range from 0 to 50 dB (in
10 dB steps) and close the input field with one of the enter keys, or
use the U
P/DOWN arrow keys to select the attenuation value in the
range from 10 to 50 dB.
If the attenuation value is changed, the attenuation option will
change to “auto”.
WARNING
The maximum allowable input power level at the RF
IN connector is
30 dBm (1 W). Higher input levels may result in serious damage of
the instrument.
NOTE
The attenuation value of 0 dB can be set only with the numeric keys
to avoid accidental deactivation. The 0 dB setting should be selected
carefully because input levels that are too high at the input may
damage the instrument.
NOTE
For precision measurements, the input level subtracted by the atten-
uation should not exceed –23 dBm.
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