maybeoneday

New member
Hi all,
please be gentle,

I have a Cambridge Audio 540R v2 which I'm wanting to control via serial port on pc, using LinuxMCE.
Acording to CA's tech support the rs232c port on the receiver is for software updates only (540R v3 does support), and having tried that option (they originally told me it was posible)...Dead end ? ...no ..the receiver has a Custom Install Bus which appears to be a normal rca audio connector.

The manual states............


"The 540R V2.0 features a Control Bus input that allows un-modulated
remote control commands (positive logic, TTL level) to be received
electrically by the unit. These control commands are typically generated
by custom installation (multi-room) systems or remote IR receiver
systems. The Control Bus socket is colour-coded orange.
This unit features 'direct' IR/Control codes as well as toggle codes for
many of their features to simplify programming custom installation
systems. Special direct On/Off 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 on the remote control. The
remote first generates it's standby (toggle) command. Keep the
button held down, after 12 seconds an AV receiver “On” command
will be generated. If the button is kept held down for a further 12
seconds, an AV receiver “Off” command is generated.
Repeat this procedure with the Mute, Sub On/Off, Stereo Mono and
Tuner AM/FM buttons to send On/Off commands. The Tuner AM/FM
button also provides unique FM and AM commands to allow switching to
a specific band."

and also

CONTOL BUS INPUT

"Opto isolated, TTL positive logic,
Unmodulated"


So, my questions,
1) would it really be an rca phono plug?
2)if so would it be possible to connect via com port on pc,and if so which pins ?
3) any potential problems?


any help / clues on where to start greatly appreciated,
tia
Ian

ps..please...KISIS...keep it simple I'M stupid.
 
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