HP 8360 B Series, Руководство пользователя

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When you press
(
POWER LEVEL
),
the active entry area displays:
X POWER LEVEL: ,
where X represents a numeric value. The data display area indicates:
Power
MTR : x . x x .
In
Normal, Module,
the
(
POWER LEVEL
)
key controls the output
power of the swept signal generator as compared to the feedback
voltage from a millimeter-wave source module. The attenuator (if
present) is automatically uncoupled from the ALC system and the
[
POWER LEVEL
)
key controls the
Level DAC
and
Level Control Circuits
(see Figure A-l) within the ALC level range to -20 This
mode of operation requires a feedback connection from the module
to the swept signal generator through the SOURCE MODULE
INTERFACE.
When you press
[
POWER LEVEL
),
the active entry area displays:
X MODULE LEVEL: ,
where X represents a numeric value. The data display area indicates:
Power
MDL : x . x x .
In there is no feedback voltage to level the power, so power
level is uncalibrated. A leveling point is not specified in this mode.
The
[
POWER LEVEL
)
key controls the linear modulator directly,
from 0 to approximately -80 The attenuator (if present) is
automatically uncoupled from the ALC system.
When you press
(
POWER LEVEL
),
the active entry area displays:
X REFERENCE: ,
where X represents a numeric value. The data display area indicates:
Ref
OFF : x . x x
and the message line indicates: UNLVLED.
In
Search,
any of the leveling points can be specified and used as the
comparison feedback voltage. Basically, this mode operates the same
as ALCoff after the searched-for power level is reached. The active
entry area displays different information depending on the leveling
point chosen.
P-4 Operating and Programming Reference