R3131 Spectrum Analyzer Operation Manual
3.3 Menu Function Descriptions
3-30
3.3.11 LEVEL Key (Frequency Level)
This section describes the menu displayed when the LEVEL key is pressed.
Ref Level
Allows you to set the reference level.
ATT AUTO/MNL
Toggles the input attenuator between AUTO and MNL.
AUTO:
Automatically sets an optimum input attenuator in
accordance with the reference level setting.
MNL:
Allows you to set an input attenuator within a range
of 0 to 50 dB (in 10 dB step). Setting the attenuation
to 0 dB is possible only by using the numeric keys.
dB/div
Displays the dB/div menu which is used to set the graduation of
amplitude scale (vertical axis).
10dB/div
Sets the amplitude scale graduation (vertical axis) to 10 dB/div.
5dB/div
Sets the amplitude scale graduation (vertical axis) to 5 dB/div.
2dB/div
Sets the amplitude scale graduation (vertical axis) to 2 dB/div.
1dB/div
Sets the amplitude scale graduation (vertical axis) to 1 dB/div.
Linear
Displays the reference level data between 0 V and the REF level
on a linear scale (in volts).
Units
Displays the Units menu which sets the units used for the
reference level, the display line and the marker level.
dBm
Sets the unit to dBm.
dBmV
Sets the unit to dBmV.
dB
µ
V
Sets the unit to dB
µ
V.
Watts
Sets the unit to W.
Volts
Sets the unit to V.
Apr 10/98
