compleate newbe,

soundguy

HI,
I'm a complete newbe to Propeller. I need some advice before I venture into a project.
I have a number of professional audio amps that have a data port on the back of them. On this port there is information abuot voltages, temp and overload/clip protection.
What i would like to do is be able to get this data from the Amp and display in on either an LCD or DOT Matrix display and Clip LED.

I am not sure what protocol is used for the data but I believe it could be serial. There are 7 pins of data and a ref GND.

Would the propeller be the best thing to use to read this data and display it on a remote display assuming i know what format the data is being sent from the amp?

SRLM

Do you have a datasheet or link or part number?

soundguy

http://www.alconsaudio.com/site/products/downloads/Usermanual_ALC2_rev01.pdf
that is a link to the data sheet for one of the amps.
on page 16 is the information about the Data port.

Clock Loop

The problem is, the data sheet says nothing about the protocol (the way the data is being sent, and at what baud)

With out that info, your shooting in the dark. A skilled person might be able to capture all the data being sent over the wires and figure out the baud rate, and see the data loop (the point at which the data repeats) which would get you closer to decoding what means what.

Without the signal format information, your almost sol.

Contact the amp manufacturer and see if they are willing to send you info on the data structure that is coming out that port. It looks like they make devices that communicate with that port, so if they are greedy they will not tell you the data format because they want you to buy their monitoring devices.

Good luck.

---

Datasheet reads

"The Data port located on the rear panel of the ALC2, is the connection for remote controlling the amplifier. Through the 15 pin high density D-connector, signals
indicating the status of the ALC2 are available for the remote control unit. The input signals to the amplifier can also be supplied through this connector.

For cinema applications, the Data port is compatible with existing D-connector connected cinema monitors. In that application in addition to the data port
connection only the AC mains and loudspeakers need to be connected, and so the Data port caters for reduced set-up and installation time and standardised in-
and output levels.


Data port pinout:

1 Channel 1 audio input-
2 Not used
3 Channel 1 voltage monitor plus parallel/bridge mode information
4 Channel 1 current monitor plus channel 1 temperature information
5 Channel 1 clip and protect information
6 Ground
7 Channel 1 audio input+
8 Channel 2 audio input+
9 +15V output, max. 200 mA
10 Reference ground
11 Channel 2 audio input-
12 Model ID
13 Channel 2 voltage monitor plus power supply monitor
14 Channel 2 current monitor plus channel 2 temperature information
15 Channel 2 clip and protect information "

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Meh. Nothing here, move along.