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840A V2azur
The 840A V2 features a Control Bus input/output
that allow un-modulated remote control commands
(positive logic, TTL level) to be received electrically
by the unit and looped to another unit if desired.
These control commands are typically generated
by custom installation (multi-room) systems or remote IR receiver
systems. The Control Bus sockets are colour-coded orange.
An IR Emitter Input is also provided that allows modulated IR remote
control commands to be received electrically by the unit. Commands
on this input operate the unit only and are not looped out demodulated
on the Control Bus Output.
An RS232C port is also featured which allows the 840A V2
to be controlled by C.I. systems.
In addition the units feature ‘direct’ IR/Control codes as well as toggle
codes for some of their features to simplify programming custom
installation systems. Special direct On/Off and Mute commands can be
accessed on the supplied remote control for teaching into C.I. systems
as follows:
1. Press and hold the Standby/On button. The remote first generates
it's standby (toggle) command. Keep the button held down, after 12
seconds an amplifier “On” command will be generated. If the button
is kept held down for a further 12 seconds, an amplifier player “Off”
command is generated.
2. Press and hold the Mute button. The remote first generates it's mute
(toggle) command. Keep the button held down, after 12 seconds a
“Mute on” command will be generated. If the button is kept held
down for a further 12 seconds, a “Mute off” command is generated.
A full code table and RS232 protocol for this product is available on the
Cambridge Audio website: www.cambridge-audio.com
Custom installation (C.I.) use
IR Emitter
In In Out
Control Bus
ENGLISH