Model 2500A225C
34
Rev A
2.11.7
ALC Mode
This command sets the mode of the Automatic Leveling Control (ALC) feature to either a default mode
(MANUAL) or a user-configurable mode (ALC INT).
In the default mode (MANUAL), the ALC Detector Gain, ALC Response, and ALC Threshold settings do not
affect the operation of the ALC feature because factory settings are used instead.
In the user-configurable mode (ALC INT), the ALC Detector Gain, ALC Response, and ALC Threshold
settings are used to configure the ALC functionality.
*
NOTE
:
For safety reasons, the user-configuration of the ALC feature cannot be used to force the
amplifier to exceed any RF output limiting that occurs when in the default (MANUAL) mode.
Syntax:
MODE:<MANUAL|ALC<space>INT>
Query:
No (see the Amplifier State Query command)
Example 1:
To set the ALC to a default configuration, send the following command:
MODE:MANUAL<LF>
Example 2:
To set the ALC to allow user configuration, send the following command:
MODE:ALC<space>INT<LF>
2.11.8
ALC Detector Gain Adjust
This command sets the ALC detector gain, in percent. Use this setting to change how aggressively the ALC
feature reacts when the ALC Threshold value has been exceeded.
Syntax:
LEVEL:DET<det gain>
<det gain>:
Specifies the ALC Detector Gain in % from
0
(least aggressive) to
100
(most
aggressive).
Query:
No (see the Machine State query command)
Example
To set the RF Detector Gain to maximum aggression, send the following
command:
LEVEL:DET100<LF>
Default Value:
50%
2.11.9
ALC Threshold Level Adjust
This command allows the user to adjust the internal ALC threshold value between 0% (no gain) and 100%
(default ALC Threshold Level). The default ALC Threshold level cannot be exceeded.
For instance, setting the threshold to 50% will limit the RF Output to 50% of the default threshold level.
Syntax:
LEVEL:THR<thresh val>
<thresh val>:
Specifies the ALC Threshold value in % from
0
(no gain) to
100
(default ALC
Threshold value)
Query:
No (see the Machine State query command)
Example
To set the ALC Threshold Level to half of the default value, send the following
command:
LEVEL:THR50<LF>
Default Value:
100%
Summary of Contents for 0053007
Page 2: ......
Page 4: ......
Page 6: ......
Page 18: ...Model 2500A225C iv ...
Page 28: ......
Page 70: ...Model 2500A225C 46 Rev A ...
Page 80: ...Model 2500A225C 56 Rev A Figure 4 7 SMA Module Input Figure 4 8 Final Module RF Output ...
Page 82: ...Model 2500A225C 58 Rev A ...
Page 84: ...Model 2500A225C 60 Rev A ...
Page 86: ......
