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Key Function Descriptions
Key Descriptions
LAST SPAN
LAST STATE
LINE
LINEAR
LOCK HARMONIC
Table 4-6
Mixing Harmonics for Unpreselected External Mixing
Frequency
Band
K
A
Q
U
V
E
244
Sets the spectrum analyzer to the previously selected
span, allowing you to toggle between two settings. For
example, you can toggle between zero span and a larger
span to view modulation in both the frequency and time
domains.
Front-panel key access:
Recalls the instrument state that existed before the last
time that
was pressed.If the spectrum analyzer
PRESET
has just been turned on, the recalled state will be the
state that the instrument was in when power was
turned off.
Front-panel key access:
Sets the trigger to line mode. Sweep triggers occur at
intervals synchronized to the line frequency.
Front-panel key access:
Selects a linear amplitude scale. Measurements using a
linear scale are normally read in millivolts, but other
units can be selected. See the UNITS softkey
description.
Front-panel key access:
Displays and locks to the current harmonic number.
A harmonic number refers to the local-oscillator
harmonic that is used to sweep a specific external
mixing frequency band. These numbers are shown in
Table on page 244. When locked, only center
frequencies and spans that fall within the frequency
band of the current harmonic may be entered. When
under
FULL SPAN
SPAN
to the frequency band of the selected harmonic.
Front-panel key access:
Frequency
Mixing
Range
Harmonic
(GHz)
18.0 to 26.5
6−
26.5 to 40.0
8−
33.0 to 50.0
10−
40.0 to 60.0
10−
50.0 to 75.0
14−
60.0 to 90.0
16−
SPAN
or
PRESET
RECALL
TRIG
AMPLITUDE
is activated, the span is limited
AUX CTRL
Conversion
Loss
(Default)
30 dB
30 dB
30 dB
30 dB
30 dB
30 dB
Chapter 4
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