Agilent Technologies ESA-E E4401B, User'S/Programmer'S Reference

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Chapter 2 135
Front-Panel Key Reference
Source
Fr
ont-P
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l K
e
y
Ref
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NOTE
For spectrum analyzers with Option 1DN or Option 1DQ, the tracking
generator must be turned on (
Source
,
Amplitude (On)
) before you set up
the segmented sweep table.
NOTE
When
Amplitude (Off)
is selected, the output attenuation on the Agilent
E4402B, E4403B, E4404B, E4405B, E4407B, and E4408B is set to the
maximum attenuation.
Power Sweep
On Off
Sets the power-sweep function to
On
or
Off
. The value of the
power-sweep range is displayed in the active-function block when you
press
Power Sweep (On)
. The analyzer continues to sweep the specified
frequency range when power sweep is on. (To do a power sweep at a
fixed frequency, set the analyzer to zero span at the desired frequency.)
The available power-sweep range is a function of the source attenuator
setting. For your instrument’s available power sweep range refer to the
appropriate Specifications Guide for your analyzer.
The output power of the tracking generator is swept according to the
sweep rate of the analyzer. The output power is always swept from the
source power setting to a higher power setting (negative source power
sweep values are not allowed).
Power-sweep measurements are particularly useful in making gain
compression measurements or output power versus frequency
measurements.
CAUTION
When using the power sweep functionality, the actual source amplitude
will be greater than the source amplitude indicated. The source
amplitude value is the starting amplitude for a power sweep, so the
ending amplitude for a power sweep will be higher then the displayed
value. As a result, exercise caution when connecting a power-level
sensitive device to the tracking generator output.
Key Access:
Source
Attenuation
Auto Man
Allows you to select between automatic and manual adjustment of the
tracking generator’s output attenuator. The Agilent E4401B and
E4411B can be manually adjusted from 0 to 60 dB in 10 dB steps. All
other Agilent ESA analyzers can be manually adjusted from 0 to 56 dB
in 8 dB steps. When auto-coupled, the attenuation function
automatically adjusts the attenuator to yield the source amplitude level
specified by the
Amplitude On Off
softkey function. For the Agilent
E4401B and E4411B, press
Attenuation (Man)
for power sweeps greater
than 10 dB.
Key Access:
Source