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September 12, 2005 • Alcorn McBride AmpTraXX User’s Manual • Rev 1.2
Page 8
Firmware Update Mode
While in Firmware Update
Mode, AmpTraXX will not
operate normally. All
filters and amplifiers will
remain off until this switch
is returned to the ON state.
Whenever switch #3 is in the
OFF
(
Up
) position, AmpTraXX will be in Firmware
Update Mode. In this mode of operation, AmpTraXX will sit in an idle state and
wait for a firmware update via RS-232. For a detailed explanation on Updating
AmpTraXX firmware, see the
Updating Your Firmware
section.
Ground Lift
In the event of AC hum or noise, the fourth key on the 4 key DIP switch, may be
opened to isolate the unit’s ground from its chassis. For ground lifting, push the DIP
switch #4 to the
OFF
(
Up
) position.
Unbalanced Inputs
For balanced input obtain
the optional balanced
audio input module.
Sixteen RCA jacks are used for unbalanced audio input.