HP 8360 L Series User Manual page 242

When you press
(
POWER LEVEL
X. XX dBm,
where X represents a numeric value. The data display area indicates:
INT : x.xx.
Normal, Uncoupled Attenuator,
In
Level Level Control Circuits
the
within the ALC level range (-l-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 CW 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 (t25 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:
x . x x .
EXT :
Normal, Power Meter (PwrMtr),
In
the output power of the swept CW generator as compared to the
feedback voltage of the power meter. The attenuator (if present) is
automatically uncoupled from the ALC system and the
Level DAC
key controls the
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 Range softkey. This mode of operation requires a feedback
Mtr
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
Level DAC Level Control Circuits
and
the active entry area displays:
),
the
[
POWER
Level Control Circuits (see
and
Operating and Programming Reference P-3
key controls
)
key
[ )
POWER LEVEL
key controls
POWER LEVEL