Hi Guys,
The RDS pilot being referred to here is the 19Khz sync pilot. You obviously don't have this turned on in Airomate. If you can, you should. If you need help doing this, I'll guide you through it.
RDS will work without this but it will work better if it's on.
Hi,
The PC I used for this demo is Windows XP but this makes no difference to what you need to do.
Also this is not an active broadcast PC, I am using a very old unregistered demo version of BPP on this machine just for this demo so some of the menu layout in Breakaway might be slightly different from the version you are using.
OK, so first of all, click 'setup' on your Airomate and select the RDS tab. Set the RDS level to 8% Don't worry if this seems wrong for now, you find later this is correct. At this stage the RDS level (If Breakaway RDS gain is set to 0.00dB) will match Airomate output at 8%, this is fine for now. If RDS gain is not 0.00dB, set it to this now. Message will show for now 'Pilot Absent'.
Click 'Save settings'
Now in Airomate, move to the Synchronization tab which is under Audio and set the first box to Enable, then set the level to 10%. This is not critical but 10% works just fine. This sync tone does not get sent through your audio/mpx chain, it is just used as a reference to synchronize to.
It should not matter if you have the sync output channel set to 1 or 2 but if one does not work, try the other. As long as you have the pipeline channel setting set to 2(mix) on the Breakaway I/O settings, this should work on either.
Click 'Save Settings'.
Just to demonstrate why this is advantageous, I have photographed a scope trace with the sync on and the sync off.
It's important to remember that the RDS and Stereo are both working fine in both cases but it will be using a bit less spectrum when in sync, you will see why.
As you can see now, it's a mess and the scope is much more full, this is your spectrum being wasted. The waves are not in sync and it's not efficient. Still working but using more precious Khz modulation than when in sync.
50% RDS level is too high. If setup is all correct (airomate in RDS only mode) then 8% RDS level gives 4% in BBP.
Also, sometimes swapping the RDS and sync channels around can make the difference.
Here is a picture how to get RDS only mode.
You might also need to try different settings on the RDS input of BBP in the I/O settings. I usually used 2 channel (mix) and if you follow my method above, everything should work fine.
If you are using Windows 7, don't forget to set properties of the relevant pipeline to 192Khz.
I deleted the LAN driver, turned onboard audio and a few other things off in the BIOS, and used your settings for Airomate shown above.
RDS pilot in Breakaway at 0db gain is 4% so thats fine I guess.
For quick calibration, if you have a deviation meter on your TX, select 60Hz squarewave tone in BBP and udjust tilt until you get the lowest modulation reading, should be 50-55KHz then when you go back to music, you should be close to 75Khz, you may need to tweak to get modulation to 100%.
If you don't have an analyser yet, nor a mod meter, assuming your TX is DC straight, as ESI cards are pretty consistent, I can tell you the tilt setting is between 3 or 4, either will get you close to dead on.
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