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Número de pieza | ZNA134 | |
Descripción | CCIR/EIA TV Synchronising Pulse Generator | |
Fabricantes | FERRANTI | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de ZNA134 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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ZNA134 Lï:J Isemiconductors
CCIR/EIA TV Synchronising Pulse Generator
FEATURES
. 026 and 626 lins standards.
. CCIRand ElAstandard outputs.
. SIngle 6 volt aupply. fullv TTLcompatibla.
. easy synChroniaingbatwaan genarat<l<8.
. Direct r88et ta vartlcal and horizontal countara.
. FociIltyfor adding and subtroctlng iines.
. Automatlc Intarlocing.
. On chlp osclll.tor (req"lrlng axternal crystal).
. Canba drivan wlth an external oacillator.
. Field raference output.
. Extondad Temperature Ronge eveilable ZNA134 H RED
GENERAL DESCRIPTION
~~~~I~ ~ ~ttY::~~ gC~~I~~~~~~,,s"~;:g~~ ~::r::=,::!;'~a::~~r
t~:~::':~::::'~ ~
826 or 626 line commercial. Indunrlol or militory telovlaion ayatoms. The aynchronouo
divldera and docodlng loglc employad wlthln the unit anaure pertact Interlaci>. together
wlth apike"free output woveforma havlng prec'sely 4efined relnlve positions and pulse
wldthé: Thedevlceiaçontalned
Ina10 pin D.I.L. and can be..lectedtooPMoteoverthe
militory tempat8ture range.
'Dopandanl on lino systomusod. sori.. 'osonanl.
SYSTEM DIAGRAM
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1 page ZNA134
Unes are addad to tha second generator if EF2 is le.. than one field period delayed from Hf, and
subtractad il EF2 is greater thon one field psriod delayed trom EFI to raduce synchronisatioh time
The add/sublract circuitry con be built using nine TTL packages :-
4 off ZN7402
1 off ZN7427
1 off ZN7404
1 off ZN74123
1 off ZN74121
1 off ZN7493
The circuit in Fig, 6 adds or sublracts one line PSI trame but this could be extendad to two or more
lines psr Irame by adding lunher bits to the 3 bit counter and decoding the relevant states, Similarly
hall aline psr frame con be added by decoding 'OC' instead of 'OB',
The circuit operates in 625 or 525 line mode without any changes to the compone,,! ".Iues,
PACKAGE OUTLINE
ZN134H
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5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet ZNA134.PDF ] |
Número de pieza | Descripción | Fabricantes |
ZNA134 | CCIR / EIA TV Synchronising Pulse Generator | GEC PLESSEY |
ZNA134 | CCIR/EIA TV Synchronising Pulse Generator | FERRANTI |
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