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Forum: RDM Physical Layer/Hardware Discussion March 27th, 2015
Replies: 19
Views: 16,546
Posted By ericthegeek
Seems like it must be a bug in the controller. ...

Seems like it must be a bug in the controller. Get in touch with them and see if they can look into it.

BTW: The Manufacturer Label should be the Name of the manufacturer and not a URL. We're...
Forum: RDM Physical Layer/Hardware Discussion March 26th, 2015
Replies: 19
Views: 16,546
Posted By ericthegeek
Manually decoding that response, I see a few...

Manually decoding that response, I see a few things:

Protocol version = 0x01 0x20. Invalid. It should be 0x01 0x00
Model ID = 0x06 0x01. Fine (manufacturer assigned value)
Product Category =...
Forum: RDM Physical Layer/Hardware Discussion March 26th, 2015
Replies: 19
Views: 16,546
Posted By ericthegeek
No need to apologize. This forum was created to...

No need to apologize. This forum was created to help developers like you.



Can you post a HEX Dump of your GET_RESPONSE to the DEVICE_INFO?



The standard doesn't define how controllers...
Forum: RDM Physical Layer/Hardware Discussion March 25th, 2015
Replies: 19
Views: 16,546
Posted By ericthegeek
Glad to hear you got it working. As you...

Glad to hear you got it working.

As you proceed with your development, I'd encourage you to consider attending one of the RDM plugfests. The plugfests are a great way to test your RDM equipment...
Forum: RDM Physical Layer/Hardware Discussion March 25th, 2015
Replies: 19
Views: 16,546
Posted By ericthegeek
To add to what Scott said, it's a good idea to...

To add to what Scott said, it's a good idea to look at the actual 485 signals, and not just the digital side of the 485 driver. The analog waveforms on the bus may help you determine if you have...
Forum: RDM Physical Layer/Hardware Discussion March 24th, 2015
Replies: 19
Views: 16,546
Posted By ericthegeek
This is a broadcast Unmute followed by a...

This is a broadcast Unmute followed by a discovery request. I didn't validate the checksums, but the overall structure looks correct



This is a valid Discovery EUID for the UID 090C:01010101. ...
Forum: RDM Physical Layer/Hardware Discussion March 24th, 2015
Replies: 19
Views: 16,546
Posted By ericthegeek
I see what you're talking about. When the RE#/DE...

I see what you're talking about. When the RE#/DE pins (shorted together) are low, the 485 line driver's receiver is active. The line driver will read the idle state on the bus and thus drives the...
Forum: RDM Physical Layer/Hardware Discussion March 24th, 2015
Replies: 19
Views: 16,546
Posted By ericthegeek
Because I don't know the details of that specific...

Because I don't know the details of that specific RDM controller it's hard to say for sure. What is the frequency of the high-low sequence you are seeing, and what are the voltage levels?

Most...
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