Reset
Resets all menu items, including presets, to their default conditions.
Con
fi
rm
The user must con
fi
rm the reset by pressing and releasing the Select knob. While the module is
resetting, Reseting appears on the display.
To exit without resetting, turn the Select knob until Cancel appears on the display and then
press and release the Select knob, or press the Esc button.
Cancel
Cancels the reset.
Setting Base Attenuation
When operating the PA5 manually in User Attenuation (UserAtt) mode, the Base Attenuation
(BaseAtt) parameter can be used to apply a
fi
xed attenuation level to the signal. Any additional
attenuation to the signal is displayed relative to this base level within a range of 0 to 120 dB.
For example: if the BaseAtt is set to 6 dB, when the user sets the attenuation to 3 dB the actual
attenuation applied is 9 dB. This feature can be used to calibrate a number of different
experimental setups, attenuating each by a different base attenuation so as to provide identical
signal levels when each is set to 0.0 dB UserAtt.
When this feature is in use, a "+" symbol is displayed on the left side of the display. Note that
the Base Attenuation and Reference parameters can be used simultaneously. When both of
these features are in use, the letter "R" and a "+" symbol are displayed on the left side of the
display. See
for more information.
To set the base attenuation:
Access the
UserAtt
mode, by turning the
Select
knob until
UserAtt
appears on the display,
then pressing and releasing the knob.
Access the
UserOps
menu, and turn the
Select
knob until
BaseAtt
appears on the display.
Press and release the
Select
knob. 0.0 dB appears on the display.
Turn the
Select
knob until the display shows the desired level of attenuation.
Press and release the
Select
knob. The level is saved and
BaseAtt
appears on the display.
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PA5 Programmable Attenuator | 12
