HP 8360 B Series User Manual page 284

(
When you press
POWER LEVEL
X. XX dBm,
where X represents a numeric value. The data display area indicates:
Power (dBm)
INT :
Normal, Uncoupled Attenuator,
In
Level DAC Level Control Circuits
the and
within the ALC level range (+25 to -20 dBm). The attenuator is
uncoupled from the ALC system and is controlled separately with the
Set Atten key.
(
When you press
POWER LEVEL
where X represents a numeric value. The data display area indicates:
Power (dBm)
INT: x . x x .
Normal, External Detector (ExtDet),
In
controls the output power of the swept signal generator as compared
to the external detector feedback voltage. The attenuator
(if present) is automatically uncoupled from the ALC system and the
( )
key controls the
POWER LEVEL
(see Figure A-l) within the ALC level range (+25 to -20 dBm).
This mode of operation requires a feedback connection from a
negative-output
diode detector to the EXT ALC connector.
(
When you press
POWER LEVEL
where X represents a numeric value. The data display area indicates:
EXT : x . x x .
Normal, Power Meter (PwrMtr),
In
the output power of the swept signal generator as compared
to the feedback voltage of the power meter. The attenuator
(if present) is automatically uncoupled from the ALC system and
( )
the key controls the
POWER LEVEL
Circuits
(see Figure A-l) within a more restricted range of the ALC
level. Instead of the 45 dB range of the ALC in other modes, 12 dB
is available in this mode, with the upper end of the range set by the
Pwr Mtr Range softkey. This mode of operation requires a feedback
connection from the recorder output of a power meter.
],
the active entry area displays:
(
the
POWER LEVEL
(see Figure A-l)
),
the active entry area displays:
(
the
POWER LEVEL
Level DAC Level Control Circuits
and
),
the active entry area displays:
(
the
POWER LEVEL
Level DAC
and
Operating and Programming Reference P-3
( )
POWER LEVEL
]
key controls
]
key
)
key controls
Level Control