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Tweak some Verbage regarding the 'Scan' Function;

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lwvmobile
2023-10-14 09:28:53 -04:00
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examples/Example_Usage.md
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@@ -17,10 +17,10 @@
-fy YSF
```
## Conventional Frequency "Fast Scanner"
This feature is used to allow DSD-FME to use RIGCTL or RTL input and cycle through frequencies as fast as possible to attain a frame sync.
## Conventional Frequency Scanner
This feature is used to allow DSD-FME to use RIGCTL or RTL input and cycle through frequencies to attain a frame sync.
This works almost identically to how the trunkng methods work, but instead of locking onto a control channel and tuning based on its decoding, it rapidly tunes through all loaded frequencies in a CSV file and stops when it finds a frame sync. This method is meant for loading a bunch of conventional non-trunking frequencies that signal only when voice or short data bursts are present (DMR T2, Conventional P25 P1, Conventional NXDN, etc) and decode them until the frame sync stops and then resume its scan. This method uses SDR++ RIGCTL, or RTL internal handling to go through signal. -Y is the fast scanner switch.
This works almost identically to how the trunkng methods work, but instead of locking onto a control channel and tuning based on its decoding, it tunes through all loaded frequencies in a CSV file and stops when it finds a frame sync. This method is meant for loading a bunch of conventional non-trunking frequencies that signal only when voice or short data bursts are present (DMR T2, Conventional P25 P1, Conventional NXDN, etc) and decode them until the frame sync stops and then resume its scan. This method uses SDR++ RIGCTL, or RTL internal handling to go through signal. -Y is the scan switch. Note: This method will perform at a level rivaling a real hardware scanner, SDR tuning is not nearly as fast or reliable at locking onto signal.
To scan through a mixture of DMR and P25 Conventional, use:
`dsd-fme -i tcp -C channel_map.csv -G group.csv -Y -U 4532 -N 2> log.ans`
@@ -33,7 +33,7 @@ To scan through NXDN96 only conventional, use:
The Channel Map setup will be identical to any of the channel maps found for trunking systems, channel numbers do not matter and can be arbitrarily organized, and frequencies can be duplicated to be 'scanned' more frequently in larger CSV files. Scan speed by default is 1 second, and is most stable at that speed. This can be adjusted by using the `-t 2` option, for example, to specify 2 seconds of hang time per frequency. ~~If activity occurs on a frequency, an additional 2 seconds of 'hangtime' will occur on that frequency for any follow up voice activity.~~
Please Note: DMR Simplex may not behave well on fast scan, I have not been able to test it as such, but given the nature of the on-off timeslot signalling on DMR Simplex, missed frame syncs and skipping/resuming scan may occur.
Please Note: DMR Simplex may not behave well on scan, I have not been able to test it as such, but given the nature of the on-off timeslot signalling on DMR Simplex, missed frame syncs and skipping/resuming scan may occur.
## Trunking Examples
Please see trunking.sh for sample start up scripts or scroll down to the bottom for more explanation.