Uitzenden Testkaart

Discussion about this major DATV Project. See https://wiki.batc.org.uk/The_Portsdown_Transmitter
PE1NCH
Posts: 16
Joined: Fri Apr 29, 2022 2:05 pm

Re: Uitzenden Testkaart

Post by PE1NCH » Thu Jun 23, 2022 11:07 am

Is there anyone who has a solution for this that the pluto does broadcast with the
webcam and when you switch with the Source key to Testcard no power comes out of the pluto

radiogareth
Posts: 1211
Joined: Wed Jan 06, 2016 9:46 am

Re: Uitzenden Testkaart

Post by radiogareth » Thu Jun 23, 2022 12:03 pm

Check that the Pluto supply voltage is 5.00, not higher.
I assume you have done all the ground mods etc. Its usually a PSU spike or earth loop glitch that upset the Pluto.
Now my RPI's are all on 5.00V the Plutos are being well-behaved.
Gareth

PE1NCH
Posts: 16
Joined: Fri Apr 29, 2022 2:05 pm

Re: Uitzenden Testkaart

Post by PE1NCH » Tue Jul 05, 2022 9:20 am

The supply voltage comes from the Rpi, which should be fine and I find it difficult to measure the voltage in the pluto.

radiogareth
Posts: 1211
Joined: Wed Jan 06, 2016 9:46 am

Re: Uitzenden Testkaart

Post by radiogareth » Tue Jul 05, 2022 10:47 am

Measure it on the RPI GPIO pins will be good enough.
https://linuxhint.com/gpio-pinout-raspberry-pi/
I'm assuming you have either the original Pluto USB or a good quality alternative. I use Anker brand, as short as possible for the application. That said, the Pluto seems to run very well on my laptop when using ExpressDVB Transmitter sotware even on a long USB extension (also high quality).
Gareth
Last edited by radiogareth on Tue Jul 05, 2022 11:23 am, edited 1 time in total.

PE1NCH
Posts: 16
Joined: Fri Apr 29, 2022 2:05 pm

Re: Uitzenden Testkaart

Post by PE1NCH » Tue Jul 05, 2022 11:22 am

Thank you Gareth

PE1NCH
Posts: 16
Joined: Fri Apr 29, 2022 2:05 pm

Re: Uitzenden Testkaart

Post by PE1NCH » Wed Jul 13, 2022 11:51 am

I checked all voltages on the RPI GPIO pins at RX 5.08 Volt TX 5.03 Volt.
Bought good quality USB from Anker brand
With the source button on Webcam c920 I have image with the Minitiouner as RX when I use the source
button on Testcard, it seems that the RPI does not switch to TX.
Do I sometimes have to change a setting for sending test card?
Henk

g0mjw
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Joined: Sat Sep 20, 2014 9:15 am

Re: Uitzenden Testkaart

Post by g0mjw » Wed Jul 13, 2022 12:10 pm

Do you have the correct audio source plugged in or selected as no audio?

PE1NCH
Posts: 16
Joined: Fri Apr 29, 2022 2:05 pm

Re: Uitzenden Testkaart

Post by PE1NCH » Wed Jul 13, 2022 3:07 pm

Yes I have tested all possibilities no result rx from the test card

G8GKQ
Site Admin
Posts: 2794
Joined: Sun Mar 22, 2009 1:21 pm

Re: Uitzenden Testkaart

Post by G8GKQ » Wed Jul 13, 2022 4:18 pm

What SR and FEC are you trying?

What Test Card?

Please try it with these settings:

Dave, G8GKQ
Attachments
Test Card Settings.png
Test Card Settings.png (47.54 KiB) Viewed 2720 times

PE1NCH
Posts: 16
Joined: Fri Apr 29, 2022 2:05 pm

Re: Uitzenden Testkaart

Post by PE1NCH » Thu Jul 14, 2022 8:48 am

Hi Dave thank you very much for your help I have set everything
up as you show in the picture but unfortunately it does not work with
the test card with the webcam it works great .
the broadcast doesn't work with the contest numbers either
Henk,PE1NCH

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