Error Rate

[dallascowboys]

Was watching a video on the 436 person stated that the Threshold should be 8 which mine is and the error rate between 1 and 10 what is error rate ? is this the same as squelch ?

 

[ofd8001]

See: https://www.radio-electronics.com/i...gn/ber/bit-error-rate-tutorial-definition.php


Basically it's where the scanner got a bit of data and couldn't determine for sure whether it was a 0 or 1. As you probably suspect, a lower number is better.


Squelch is a whole 'nother thing.

 

[Ubbe]

If a threshold level should be something then Uniden would have made that value fixed and not selectable. It depends of the site and system type and probably other things that dictates what are the optimum values. You adjust it to get the lowest error rate. 0 is the best, no errors.

/Ubbe

 

[dallascowboys]

Thanks for the info, is this error rate already set or do I have to set it and if I have to set it how is this done ?

 

[ofd8001]

From page 59 of the manual:

Allow the scanner to monitor the site or channel for several minutes. The error rate should drop for each transmission and the threshold levels should automatically adjust to a more optimal setting. Then, once the threshold level settles to a stable setting, make a note of the value. This is the site’s or channel’s optimum decode threshold.
Press Func and rotate the Scroll Control to set the MAN decode threshold start level to a setting that most closely matches the system’s optimum decode threshold. Whatever you set at this point will be remembered for this site as the starting point for the auto-tuning function for subsequent transmissions.

To exit P25 Adjustment Mode:
(BCD536HP) Press Func then Vol.
(BCD436HP) Press Vol.

Noting that I often do things is a little different than other folks, if I have a P25 digital issue, I'll use Sentinel and edit the site, going to the options tab. The settings I'll try are Digital Threshold Mode set to Manual and experiment with the Digital Threshold Level values. Then after writing to the scanner, I'll use my ears to listen which sounds best to me, rather than look at the display.

(Alternatively one could use the keypad to work his way through the menu "tree" to edit the system's site settings instead of using Sentinel.)

For some reason I find Manual to work better (by ear) than Auto. My guess is that in Auto, the scanner is always trying to find the "best" value, but transmissions are usually so brief, it's hard for it to arrive at something.

 

[bob550]

Thanks for the info, is this error rate already set or do I have to set it and if I have to set it how is this done ?

The scanner's error rate is only a numerical value that can be displayed for your information. It's not configurable.