So I'm in the process of figuring out how to wire a blanking circuit on a Sylvania 6720FDF.
I have the Datasheet for a OSD chip M3776AMA. (The set has a M3776AMCH but I can't find that and I bet this is the same) :
https://1drv.ms/b/s!AocbXK2VK3WQnEALemnWTSQc_J-P
It has entries under "single power source" where it mentions OSD in several iterations dependent on a frequency mode.
In the entries that describe OSD being "on" it lists the voltage as 4.75-5.25 volts.
Would I be correct in believing this is the voltage seen at the OSD blanking pin?
There is also an entry for "OSD power source" and that figure is the same 4.75- 5.25V.
The OSD blanking circuit between this chip and the Jungle only includes a voltage divider with 820 ohm inline and 470 ohm to ground. Given the voltages above possibly being the output voltage at the beginning of this circuit I would be able to figure out what the Jungle voltage IN ballpark should be pretty easily. Approx 1.82V, right?
thanks
EDGE_
Deciphering what I can from OSD chip datasheet (help)
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Edgecrusher
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