Potential reasons for USBUIRT not tuning accurately?

[IVB]

I have a USBUIRT controlling a hidef DirecTV box (I believe it's the H21-100). It was working fine for months, then I pulled the USBUIRT to do something on another PC. I put it back on the Sage Server, but all of a sudden channel changes aren't being received properly by my DTV box.

More specifically, the channel #s aren't being received fully by the DTV box. If I tune channel 242, it'll see the first & last 2, but not the 4. If I tune 245, it'll see the 2 and 4, but not the 5. If I tune 300, it'll see the 3 and first 0, but not the second zero.

It's not always that specific problem, but some form of not seeing the full channel transmitted.

I tried changing the delay between codes in the Remote Control options, seems to have some benefit, but not working fully.

Here's my current Remote Control Options:

Digits per channel: 0
Channel Change Prefix Code: none
Channel Change Confirm Code: None
Delay Between Codes: 1100 msec
Delay Between Channel Changes: 800 msec
IR Blaster Repeat Factor: 3

I suppose the H21 could be bad, or the USBUIRT could be bad, but i'm loathe to think so as it was all working fine before my change.

Any thoughts? I happen to have a Paterson tech cable (two actually), but I can't get them to work. I'll start a different thread for that, though.

[Apap]

Mine used to be rock solid but now it misses about 1 in 20 times with the same symptom of not seeing all the digits.

Here are my settings

Digits per channel: 4
Channel Change Prefix Code: none
Channel Change Confirm Code: None
Delay Between Codes: 600 msec
Delay Between Channel Changes: 800 msec
IR Blaster Repeat Factor: 2


I am not sure what to tweak to improve performance.

[IVB]

Mine is more like 18 of 20 being missed, so really quite strange, and quite upsetting. If I didn't have 3 HD-OTA tuners, I'd really be in trouble.

[mbowling]

I also experienced this problem. At times, the channel would not change. I had recently rerouted some wires behind my computer desk near the SageTV server. Apparently, the USB UIRT emitter wires were too close to other wires and were picking up interference. I rerouted the USB UIRT emitter wires away from the mess of wires behind my desk and the channels are changing normally again.

Similar experiences in this thread http://forums.sagetv.com/forums/showthread.php?t=24791

[IVB]

Now that is interesting... I can all but guarantee that the wire path is different in the new run than the old. I'll have to play with that.

[stanger89]

Is the aiming the same?

FWIW, here are my settings which are working perfect like always with a Dish VIP211 box:

Digits per channel: 3
Channel Change Prefix Code: E
Channel Change Confirm Code: E
Delay Between Codes: 6 msec
Delay Between Channel Changes: 100 msec
IR Blaster Repeat Factor: 2

E is the enter/select command on the Dish box. And the 3 digits per channel doesn't seem to prevent the tuning of 4 digit channels.

[IVB]

yep, aiming is identical. Man that Dish box is fast, if I put in a delay between codes of less than 800ish msec's, the box doesn't get them all. Not a new issue, this is what it was like when it was new.