HP 8360, User Handbook Manual

Page: 277 / 508

LEVEL
)
INT : x.xx.
In
Normal, Uncoupled Attenuator,
the
(
POWER LEVEL
)
key controls
the Level and Level Control (see Figure A-l)
within the ALC level range to -20 The attenuator is
uncoupled from the ALC system and is controlled separately with the
Set key.
When you press
(
POWER LEVEL
),
the active entry area displays:
X A L C :
where X represents a numeric value. The data display area indicates:
Power
INT : x . x x .
In
Normal, External Detector
the
[
POWER LEVEL
)
key
controls the output power of the synthesizer as compared to the
external detector feedback voltage. 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 a
negative-output diode detector to the EXT ALC connector.
When you press
(
POWER LEVEL
),
the active entry area displays:
X EXT POWER: ,
where X represents a numeric value. The data display area indicates:
EXT : x . x x .
In
Normal, Power Meter
the
(
POWER LEVEL
)
key
controls the output power of the synthesizer as compared to the
feedback voltage of the power meter. 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 a more restricted range of the ALC level.
Instead of the 45
range of the ALC in other modes, 12 is
available in this mode, with the upper end of the range set by the
Pwr Range This mode of operation requires a feedback
connection from the recorder output of a power meter.
When you press
(
POWER LEVEL
),
the active entry area displays:
X POWER LEVEL: ,
where X represents a numeric value. The data display area indicates:
HP 8360
User’s Handbook Operating and Programming Reference