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Front-Panel Key Reference
Det/Demod
Demod View
On Off
Speaker
On Off
Demod Time
It is normal to hear clicking sounds when the Auto Alignment function
NOTE
is On. During retrace, a small portion of the analyzer circuitry is
realigned. Some of the switching of the analyzer circuitry is done using
relays. It is the rapid switching of these relays during retrace that
causes the clicking sounds. To eliminate the clicking sounds, turn the
auto alignment off by pressing
When this is done, the
periodically. Refer to the Specifications Guide for your instrument to
learn more information on how often to perform
auto alignment is off.
82
Key Access:
Det/Demod
When
(On) is pressed, the vertical scaling
Demod View
of the display is in frequency, and marker will read out
the FM deviation in kHz. When Demod View is On, the
following functions are not available: Log/Lin (the
display is always linear and calibrated in Hz),
Y Axis Units, Normalize, Display Line, Peak Excursion,
and Peak Threshold. In AM Demod, pressing
(On) has no effect.
Demod View
Key Access:
Det/Demod
Turns the internal speaker on and off. The volume from
the speaker is controlled by the front-panel volume
control knob. Selecting AM or FM turns the speaker on.
Turning AM or FM off, pressing
is set to
, or cycling the power sets the speaker
Factory
function to off.
Key Access:
Det/Demod
Allows you to set the time, in non-zero spans, to pause
and demodulate the signal after each sweep. The
demodulated signal can be heard during demodulation
when in
Speaker (On)
demodulation is performed (and can be heard)
throughout the sweep.) In AM, the Video BW is set to
3 kHz and the Resolution BW is set to 10 kHz. In FM,
the Video BW is set to 30 kHz and the Resolution BW is
set to 100 kHz.
When AM or FM Demod is enabled, the instrument will
tune to the marker frequency and wait for the Demod to
take place. For long Demod times, pressing
is set to
Preset Type
Factory
function. The default value is 500 ms.
Key Access:
Det/Demod
System
,
Align Now
All
,
Demod
,
Demod
when
Preset
,
Demod
mode. (In zero span,
will abort the Demod
,
Demod
,
,
Alignments
Auto Align
function should be performed
Align Now
Preset Type
when
Preset
,
.
Off
,
when the
All
Chapter 2
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