R3131 Spectrum Analyzer Operation Manual
2.1 Panel Description
2-11Jul 10/98
Annotation Description
1 Title Displays the title you have entered to distinguish the
current data from other data
2 Reference level Current reference level
3 Amplitude scale Current amplitude scale graduation
475Ω mode indicator Indicates that the input impedance is 75Ω (nothing is
displayed if the input impedance is 50Ω).
5 HOLD mode indication Indicates that the panel key is set to the HOLD mode.
6 RF attenuator Current attenuator level. ATT is preceded by an aster-
isk (*) when set in the manual mode
7 Trace Trace mode and search mode which are currently
selected
8 Date Current date and time
9 Soft-menu Menu item corresponding to the soft key
10 Marker area Frequency and level of a marker
11 UNCAL message Indicates that the measurement has not been calibrated
12 Message window Displays error messages as they occur
13 Frequency span or
Stop frequency
Frequency span of the current display (displays may
differ depending on the currently active function)
14 Sweep time Time required to make a single sweep. SWP is pre-
ceded by an asterisk (*) when set in manual mode
15 Video bandwidth (VBW) Frequency selected for the video bandwidth filter.
VBW value is preceded by an asterisk (*) when set in
manual mode.
16 Center frequency or
Start frequency
Indicates the frequency at the center of the current dis-
play (the displayed RBW value is preceded by an
asterisk (*) when set in manual mode)
17 Resolution bandwidth
(RBW)
Displays the current resolution bandwidth (RBW is
preceded by an asterisk (*) when set in manual mode)
18 Line setup display Shows values for the display line, reference line and
squelch line
19 Average count display Displays the averaging number
20 Active area Used to display the currently active functions (note
that the data can be changed) and their related values
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