HP 8360 - Manual (Page 239)

Leveling Mode
Normal
Function Group ALC
Menu Map
Description This lets you set the leveling mode of the synthesizer to
continuous leveling at the desired leveling point. In this mode, the
RF OUTPUT is controlled by the automatic level control (ALC)
circuit, otherwise referred to as the leveling loop. The attenuator
works in conjunction with the ALC to achieve the full range of
power levels. At factory preset, ALC normal is the default state. An
asterisk next to the key label indicates that this feature is active.
Programming Codes SCPI: POWer:ALC:STATe
Analyzer: Al, internal normal; external normal; external
power meter normal; source module normal.
See Also
Leveling Mode
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Function Group ALC
Menu Map
Description This causes the ALC to switch off once the desired power
level is reached. When this leveling mode is activated, or when
power, or frequency is changed, the synthesizer switches to CW
frequency and closes the ALC system until the desired power level is
reached. The synthesizer reverts to its original frequency/modulation
state and opens the ALC system. This mode is similar to ALC off
mode and is useful for narrow pulse applications. An asterisk next to
the key label indicates that this feature is active.
Programming Codes SCPI: POWer:ALC:STATe
Analyzer:
Pulse Modulation
“Working with Spectrum Analyzers,” in Chapter 1.
Operating and Programming Reference HP 8360
User’s Handbook