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Special Functions
6 -ATT COUPLING
6
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ATT
This function allows you to set the RF attenuator coupling switch. When
COUPLING
the switch is on, internal algorithms select the proper attenuator setting for
optimum ALC performance.
When the attenuator coupling is turned off, the attenuator setting is set to
the whatever the current value is and left there. When the coupling is off,
the UNCPLD annunciator appears in the right-hand display. If ATT SETTING
(special function number 7) is used to set a specilic attenuation, the RF
attenuator coupling switch is automatically turned off.
NOTE
Since this function applies only to Internal or Unleveled ALC modes, the UNCPLD annunciator will
light in external ALC mode operation regardless of how the attenuator coupling switch is set.
NOTE
This function is visible with all instruments, but only active in instruments with Option
1El.
Associated SCPI Commands
POWer:ATTenuation:AUTO ON
Turns
the RF attenuator
couping
swkch on.
POWer:ATTenuation:AUTO OFF
?ims the RF attenuator coupling
sw/ich
oh!
15-11
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