
The Power Menu
The power menu is used to
and control analyzer power. It consists of the following
softkeys:
. . . . . . . . . . . . .
n
. . . .
. . .../
. . . . . . . . . . . . ../......................./...
.
provides access to the power range menu.
.
compensates for power loss versus the frequency sweep, by sloping the output power
upwards proportionally to frequency.
.
allows you to switch the source power on or off. When a power trip
. . . . . .. . . . ::
occurs, the trip is reset by selecting
.
. . . .
allows you to couple or uncouple primary channel power.
. . . . . . . . . . . . . . . . . . . . . . . . .
... . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......
. . . .
n
. . . . . . . . . . . . . . . . . .
Understanding the Power Ranges
The built-in synthesized source contains a programmable step attenuator that allows you to
directly and accurately set power levels in eight different power ranges. Each range has a total
span of 25 The eight ranges cover the instrument’s full operating range from + 10
to
-85
(see
6-6). A power range can be selected either manually or automatically.
Automatic mode
. . . . . .
. . . . . . . . . . .
of the instrument and the source attenuator will automatically switch to the corresponding
range.
Each range overlaps its adjacent ranges by 15
therefore, certain power levels are
designated to cause the attenuator to switch to the next range so that optimum (leveled)
performance is maintained. These transition points exist at -10 from the top of a range and
at from the bottom of a range. This leaves 10 of operating range. By turning the
. . . . . . . . . . . . . . . . . . .
... . .. . . .__
these transitions occur (see
6-6).
Manual mode
. . . . . . .
,
the power range that corresponds to the power level you want to use. This is accomplished by
. .
this mode, you will not be able to select power levels greater than 3 above or below the
range limits This feature is necessary to maintain accuracy once a measurement calibration is
activated.
When a calibration is active, the power range selection is switched from auto to manual mode,
and
appears on the display.
Application and Operation Concepts
Содержание HP 8753E
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Страница 138: ...Figure 2 62 aw000024 Gating Effects in a Frequency Domain Example Measurement Making Measurements 2 87 ...
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Страница 174: ...Figure 3 23 Example Swept Power Conversion Compression Measurement 3 32 Making Mixer Measurements ...
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