Once again about PAL encoders (about MC1377)...
ZXNet echo conference «hardware.zx»
Hello, Mikka_A
Keep in mind that the condenser included with quartz may have a different value! Everything
depends on the capacity of the quartz holder, quality factor, etc.
It's better to put an 8/80pF trimmer there
Hello, Mikka_A
Mik> PBF and DL, as I understand it, these are delay lines?
BPF; Toko; H287BSJS-3108HWD -> filter at 4.43 MHz
D.L.; Matsushite; ELB-5F020N -> 180 nsec delay line.
And I downloaded DS in English.
Hello Romanich
Rom> Keep in mind that the air conditioner included with quartz may be different
Rom> meaning! It all depends on the capacity of the quartz holder, quality factor, etc.
Rom> It is better to put an 8/80pF trimmer there
A more detailed diagram of their DataSheet;
File:; CXA1145M.PNG http://zx.pk.ru/attachment.php?attachmentid=4215
Hello Romanich
Rom> Keep in mind that the air conditioner included with quartz may be different
Rom> meaning! It all depends on the capacity of the quartz holder, quality factor, etc.
Rom> It is better to put an 8/80pF trimmer there
Are the entry trimmers not there?
so, just in case... :v2_wink2:
Hello Romanich
Rom> if you follow the shit, then you have to!
Rom> but practice has shown that Conder with quartz is enough!
you don't understand...
RGB summary
Hello caro
car> A more detailed diagram of their DataSheet;
PBF; and DL, as I understand it, these are delay lines?
I saw this date shit...:v2_tong2; only; as a result the description is not on
English, but as I understand it in Japanese it’s difficult to read... :v2_tong;
:v2_tong:; :v2_tong;
Offtopic; 2Karo. Yesterday I killed another atmega... gee gee gee
Hello, Mikka_A
Mik> PBF and DL, as I understand it, these are delay lines?
Mik> I saw this date... :v2_tong2; only; as a result, the description is not on
Mik> English, but as I understand it in Japanese it’s difficult to read...
Mik> :v2_tong; :v2_tong:; :v2_tong;
Mik>;
I have it in English :)
I can fill it from home if necessary!
Hello, Mikka_A
Mik> are the entry trimmers not necessary?
Mik> so, just in case... :v2_wink2;
if; follow the shit, then you have to!
but practice has shown that Conder with quartz is enough!
Hello, Mikka_A
Mik> you don't understand...
Mik> summaries on RGB
it all depends on the signal levels of your video processor!
install as in NedoPC Coder PAL
Hello caro
car> BPF; Toko; H287BSJS-3108HWD -> 4.43 MHz filter
car> DL; Matsushite; ELB-5F020N -> 180 nsec delay line
car>
IMHO you can't get them :(
It’s cheaper to implement them like in SEGA MD (air conditioners/reducers/coils)
Hello Romanich
Rom> Damn, I was stupid! There is also 4.43MHz :v2_lol;
in general; It didn't start for me.
b&w
no clock on quartz
I don’t understand why.
Hello, Mikka_A
Mik> it didn’t start for me at all.
Mik> bw.
Mik> no clock on quartz
Mik> I don’t understand why.
What didn't start? My scheme or the one I asked about?
Hello Romanich
Rom> What didn't start? My scheme or the one I asked about?
your scheme.
we have a b&w image.
As I understand it, it’s due to the lack of chip timing.
Hello, Mikka_A
Mik> your diagram.
Mik> we have a b&w image.
Mik> as I understand it, it’s due to the lack of chip timing.
Quartz should be at 4.43 MHz
It is adjusted by a series-connected condenser (in my case 22pf) - for
It is different for different quartzes (requires careful adjustment)
if the image is black and white, then the encoder is already breathing - that’s good ;)
color directly depends on the quartz and the quality of its settings
the fact that there is no generation is one (or more) of three:
1) The quartz is faulty or at the wrong frequency
2) The encoder chip is faulty
3) Incorrect installation
Unfortunately I can't help you more :frown: