HP (Hewlett-Packard) 24A Manual De Usuario

 

MTR: x.xx .

In 

the 

(

POWER LEVEL

) 

key controls the output

power of the synthesizer 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 synthesizer 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:

MDL: x.xx .

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:

OFF: x.xx

and the message line indicates: UNLVLED.

In 

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.

POWer[:LEVEL] <num>[lvl suffix] or

PL

 

 CONNECTORS, Det 

 

Set 

 Tracking Menu, 

 

“Programming Typical Measurements,” in Chapter 1.