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Operation
6
NAD ATO LOGIC
The CI-series amplifier may be turned on in any one of three discrete ways for complete system flexibility:
From the front-panel switch, the 12V-TRIGGER circuit, or by a "SLEEP/WAKE" signal-sensing circuit. The
ON/OFF power control is managed by the Automated Turn-On logic or ATO Logic circuit that requires the
amplifier to be switched back to standby in the same manner by which it was activated. In other words,
if the amplifier is switched on via a 12V-control signal, it cannot be switched to standby via the front-panel
switch, it must wait for removal of the 12V-control signal. In practice, you probably would use only one
of the methods once the NAD CI-series amplifier is installed.
ATO LOGIC CHART
Amber LED over
SWITCH
front power switch
VACATION switch set to VACATION
VACATION switch set to ON
Press front power switch with
VACATION switch set to ON
Press front power switch with
VACATION switch set to ON
Amber LED over
12V TRIGGER
front power switch
VACATION switch set to VACATION
VACATION switch set to ON
12 V INPUT TRIGGER = 0V with
VACATION switch set to ON
12V INPUT TRIGGER = 12V with
VACATION switch set to ON
Amber LED over
SLEEP/WAKE
front power switch
VACATION switch set to VACATION
VACATION switch set to ON
SLEEP/WAKE SENSE DEFEAT switch
set to SENSE DEFEAT with VACATION
switch set to ON
SLEEP/WAKE SENSE DEFEAT switch
set to SLEEP/WAKE and any source
input greater than 20mV with
VACATION switch set to ON
Green
Green
SWITCH LED
12V-TRIGGER LED
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
Green
Green
SWITCH LED
12V-TRIGGER LED
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
ON
Green
Green
SWITCH LED
12V-TRIGGER LED
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
Green
SENSE LED
OFF
OFF
OFF
OFF
Green
SENSE LED
OFF
OFF
OFF
OFF
Green
SENSE LED
OFF
OFF
OFF
ON
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