Advanced DSP settings:

[jackj]

Does anyone know what these Advanced DSP (Digital Signal Processing) settings actually do? They are located under the Advanced Tab in the EZScan software. For instance the DSP Level Adapt: is set in my scanner for 64. I'm assuming that this is a digital setting of some kind since it has 256 values.

The other two settings in this box are ADC and DAC which I'm guessing is Analog to Digital Conversion and Digital to Analog Conversion. They're both set to 0db. Again, I'm guessing that the setting is for the amount of gain/loss cranked in during conversion.

I'd also like to know when these settings should be changed? What effect any changes would have and under what conditions is it necessary to change them?

GRE obviously intends for the user to change these settings but they don't give any info on when or why they need to be changed. I've done a little searching on the Internet but I can't find anything specific to the PSR-800 or even GRE scanners. If you've got any info, I sure would like for you to share.

 

[acyddrop]

Does anyone know what these Advanced DSP (Digital Signal Processing) settings actually do? They are located under the Advanced Tab in the EZScan software. For instance the DSP Level Adapt: is set in my scanner for 64. I'm assuming that this is a digital setting of some kind since it has 256 values.

The other two settings in this box are ADC and DAC which I'm guessing is Analog to Digital Conversion and Digital to Analog Conversion. They're both set to 0db. Again, I'm guessing that the setting is for the amount of gain/loss cranked in during conversion.

I'd also like to know when these settings should be changed? What effect any changes would have and under what conditions is it necessary to change them?

GRE obviously intends for the user to change these settings but they don't give any info on when or why they need to be changed. I've done a little searching on the Internet but I can't find anything specific to the PSR-800 or even GRE scanners. If you've got any info, I sure would like for you to share.

While I don't know exactly what they do, since the manual doesn't really tell you. The manual does state that you shouldn't adjust those values unless a GRE support person tells you to do so. But I too would like to know the exact effect each setting has on the scanner.

 

[lebrunmn]

Ask GRE?

Jack-

Now you have me wondering, too...

I would just ask GRE--they are quite a responsive bunch--at least they have been when I've asked questions.

Would love to know what they say.

 

[mikev]

The DSP Level Adapt setting actually does adjust the ability to decode a digital signal. I believe the manual says to adjust it in small amounts at a time... I found that I was actually able to better receive my local simulcast P25 X2 TDMA TRS by adjusting this setting up about 6-8 notches. Not sure if it helps to reject one signal over the other, or whatever it does... but it seemed to help in decoding the data that it was receiving.

I haven't tried adjusting any of the other advanced DSP settings, so I can't comment on what they do. But if you're having problems decoding your local digital system, it can't hurt to try adjusting this setting up or down a bit.

It should be noted, however, that this setting is global for the VScanner... so adjusting it for one system could cause issues decoding another system that you were previously receiving with no problems.