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Television Standards Converters, Modulators etc Standards converters, modulators anything else for providing signals to vintage televisions. |
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30th Jan 2007, 5:40 pm | #1 |
Octode
Join Date: Oct 2005
Location: Wimborne, Dorset, UK.
Posts: 1,407
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Flashing an image to the Aurora
Hello Everyone,
I was just wondering weather anyone has replaced testcard C with another image on their Aurora? I was wondering because what happens to the test tone that accompanied the testcard? Does it remain undeleted. I was just wondering as I was thinking of replacing my image but didn't know what would happen with the tone. Many thanks Lee
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Lee |
30th Jan 2007, 5:48 pm | #2 |
Retired Dormant Member
Join Date: Dec 2003
Location: North London, UK.
Posts: 6,168
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Re: Flashing an image to the Aurora
I have replaced the image on my Aurora but it's a Mk I which does not have a test tone. From my understanding of the Mk II the tone is generated rather than stored and so cannot be erased or replaced.
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30th Jan 2007, 5:55 pm | #3 |
Octode
Join Date: Oct 2005
Location: Wimborne, Dorset, UK.
Posts: 1,407
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Re: Flashing an image to the Aurora
Aha! I see,
Thanks for the quick reply, I will see what others say before I try it. Cheers Lee
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Lee |
30th Jan 2007, 9:09 pm | #4 |
Hexode
Join Date: Jul 2004
Location: Michigan USA
Posts: 325
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Re: Flashing an image to the Aurora
Hi Lee,
The new test tone feature in the revision 2 units is a 1kHz sine wave generated digitally in the fpga, and is not tied to the image FLASH. You can replace the image in the FLASH without affecting the tone. There is no way to affect the tone other than changing it in the code. The tone can be disabled however through one of the option switches if you want to send your own audio through the modulator and don't want the tone. Hope this helps, Darryl |
30th Jan 2007, 10:42 pm | #5 |
Octode
Join Date: Oct 2005
Location: Wimborne, Dorset, UK.
Posts: 1,407
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Re: Flashing an image to the Aurora
Hi Darryl,
I see, thats great, A big thumbs up by the way This unit is fantastic! I very much like the revised unit with the channel selector accessible from the outside as I have a few TV's that operate on different channels. An excellent piece of workmanship and as others have already stated, Extremely good value Cheers Lee
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Lee |
30th Jan 2007, 11:47 pm | #6 |
Hexode
Join Date: Jul 2004
Location: Michigan USA
Posts: 325
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Re: Flashing an image to the Aurora
Thanks for the feedback Lee. I was initially resitant to adding the channel switch as I thought it would not be possible to squeeze one in anywhere on the board, but it ended up fitting nicely. There really isn't much need to open the unit now, other than to make the occasional change to one of the option switches.
Cheers, Darryl |
1st Feb 2007, 1:13 am | #7 |
Rest in Peace
Join Date: Jul 2006
Location: Somerset, UK.
Posts: 2,356
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Re: Flashing an image to the Aurora
I didnt realise this was already available with external channal switching ? that was kept quiet or did i miss something
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1st Feb 2007, 8:59 am | #8 |
Retired Dormant Member
Join Date: Dec 2003
Location: North London, UK.
Posts: 6,168
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Re: Flashing an image to the Aurora
After some consultation, Darryl decided to tweak the design before ordering a new batch of blank PCBs. The first 100 or so units are the original design, subsequent units have external channel switching and a tone generator. I asked Darryl about upgrading existing units and while it's theoretically possible it's a bit of a kludge. If you are desperate for external channel switching I suppose you could mount the Aurora and a hex switch in a box and run some wires to the existing switch block. Not recommended unless you are happy to work on fine surface mount boards.
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1st Feb 2007, 10:25 am | #9 |
Rest in Peace
Join Date: Jul 2006
Location: Somerset, UK.
Posts: 2,356
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Re: Flashing an image to the Aurora
Do I understand that all new units now are switchable ? I dont fancy tampering with anything that small
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