R3132 Series Spectrum Analyzer Operation Manual
3.3.11 LEVEL Key (Frequency Level)
3-43
ON:
Turns on the built-in pre-amplifier at the gain of 20 dB
and over. Since the gain of the pre-amplifier at each fre-
quency is corrected, no gain needs to be considered for
level measurement.
OFF:
Turns the built-in pre-amplifier off.
1/2_more
Displays the Level menu (2/2).
Ref Offset ON/OFF
Toggles the reference level offset function on or off.
ON:
Allows you to set the offset level in a range of 0 to
±
100.0 dB. The relationships between the displayed
reference level, the set reference level and the offset
are shown below:
Reference level (displayed) = Reference level (set) +
Offset.
OFF:
Turns off the offset.
Input 50
Ω
/75
Ω
Sets the impedance input level for the display. The 75
Ω
setting is
used when a 75
Ω
impedance converter (ZT-130NC) is connected
to the RF input.
The R3132 converts all levels for the 75
Ω
system and displays
them.
2/2_more
Displays the Level menu (1/2).