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Guest Message by DevFuse

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Problems with usb/serial HR20&HR22 control

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4 replies to this topic

#1 OFFLINE   ahr65


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Posted 08 February 2009 - 03:29 PM

I have an HR20 and HR22 that I am controlling through a Crestron system via a usb/serial connection.

The serial commands work fine, however both boxes lock up every night forcing a red button reset (lockups seem to happen in the early morning hours after watching them at night).

I tried disconnecting them from my network to no avail (thinking that it was something on the network causing them to lockup).

Is anyone else experiencing this problem while controlling their boxes via usb/serial commands?

I can program the Crestron system to run a reboot sequence to occur every morning say at 5am. Is this something that would damage either unit over time?

I have both connected to esata 1TB WD drives. My fear is that if I reboot them every night, one of these times it will erase my esata drives (so far this has not happened).

My last resort would be to return to IR control but I'd rather not do this if possible.

Any help or suggestions would be appreciated.

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#2 OFFLINE   carl6


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Posted 08 February 2009 - 04:34 PM

When you say both boxes lock up every night, you are referring to the two HR2x DVRs, right? Have you tried disconnecting the serial port adapters to see if the lockup still occurs without them connected?

Here is a link to information about the serial interface commands. I have not used them, so can't speak from first hand experience.


This post was from a DBSTalk user, who might be able to offer you better guidance on using the serial interface.

And this is supposedly the only/best USB to RS232 adapter for the job:

#3 OFFLINE   MountainMan10



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Posted 08 February 2009 - 05:47 PM

I have my HR21-700 controlled via serial port/usb and have not had any problems.

There is a newer document, but I do not have the link handy. Here is the list of suggested adpaters from the manual. I have the IOGear.

IOGEAR GUC232A 0x067B 0x2303
ATEN UC-232A 0x067B 0x2303
BAFO BF-810 0x067B 0x2303

#4 OFFLINE   ahr65


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Posted 08 February 2009 - 06:21 PM

When I had them connected via IR control, they did not lock up. So, I do feel it is an issue with the usb/serial interface.

Yes, both the HR20 and the HR22 units exhibit the same behavior. Both require frequent red button reboots (almost daily - so it doesn't occur every night but I'd say both units require reboots on a daily basis 90% of the time).

#5 OFFLINE   ahr65


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Posted 08 February 2009 - 06:22 PM

I am using the IOGEAR GUC232A.

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