RS-232 what does it do?

[ernie00]

On my yamaha RX 1500 there is a RS-232 plug, what does it do?

Thanks for the info
Ernie

 

[MDS]

rs-232 is a serial communication protocol. On the receiver it is probably used for doing firmware updates. Some companies actually support remote control via the rs-232 interface but the specs of the remote protocol are almost never public (custom installers can get them).

For all intents and purposes, it is useless for the consumer.

 

[Nomo]

For all intents and purposes, it is useless for the consumer.

With one exception:
With the Yamahas the RS232 makes it possible to control via a computer.
Unlike the firmware updates, this software is available on the Yamaha website.

 

[Thunder18]

Pioneer

Pioneer uses it to output the results of the multi channel acoustic calibration onto a computer for visual inspection and manipulation of the settings.