Att Coupling - HP 83751A User Manual

This function allows you to set the RF attenuator coupling switch. When
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.
N O T E
Since this function applies only to Internal or Unleveled ALC modes, the
light in external ALC mode operation regardless of how the attenuator coupling switch is set.
N O T E
This function is visible with all instruments, but only active in instruments with Option 1El.
POWer:ATTenuation:AUTO ON
POWer:ATTenuation:AUTO OFF
Associated SCPI Commands
Special Functions

6 -ATT COUPLING

annunciator will
UNCPLD
15-11