cellular-infrastructure
/
osmocom-analog
9
1
Fork 2
Code Issues 11 Pull Requests 2 Projects Releases Wiki Activity

Work on docs

This commit is contained in:
Andreas Eversberg 2017-03-04 06:34:04 +01:00
parent 2e1999b1ee
commit 9d0e6b82b7
2 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
docs/amps.html
View File

@ -111,13 +111,13 @@ The transmitter will now shift frequency according the the level of the sound ca
</p> </p>
<p> <p>
<font color="red">Importaint: We need to transmit correct polarity, use auto polarity detection always!</font> <font color="red">Importaint: We need to transmit correct polarity!</font>
</p> </p>
<p> <p>
In my case, my sound card is connected to a transmitter, where a positive sample value causes a negative frequency deviation. In my case, my sound card is connected to a transmitter, where a positive sample value causes a negative frequency deviation.
This is why I need to flip the polarity of the signal, so I generate a negative sample value that causes a positive frequency deviation. This is why I need to flip the polarity of the signal, so I generate a negative sample value that causes a positive frequency deviation.
I use the '-f yes' option or '--flip-polarity yes'. I use the '-F yes' option or '--flip-polarity yes'.
Also it is essential to use a transmitter with direct access to the modulator and and a receiver with direct access to the disciminator. Also it is essential to use a transmitter with direct access to the modulator and and a receiver with direct access to the disciminator.
I use '-p -d' or '--pre-emphasis --de-emphasis' to process emphasis for audio signal in software. I use '-p -d' or '--pre-emphasis --de-emphasis' to process emphasis for audio signal in software.
I use the calling channel (control channel) 334, which could also be used as traffic channel (voice channel). I use the calling channel (control channel) 334, which could also be used as traffic channel (voice channel).

2
docs/c-netz.html
View File

@ -343,7 +343,7 @@ The transmitter will now shift frequency according the the level of the sound ca
</p> </p>
<p> <p>
<font color="red">Importaint: We need to transmit correct polarity!</font> <font color="red">Importaint: We need to transmit correct polarity! Always use 'auto' (default) to automatically detect the correct polarity.</font>
</p> </p>
<center><img src="c-netz-burst_part.png"/></center> <center><img src="c-netz-burst_part.png"/></center>