User's Manual

8 3 6 A 2 k W UHF Tr a nslat or , I nt erna lly Diple x ed Syst e m D e scr iption
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Operat ion of t he Tr a nslat or
The Translator needs an AC input of 220 VAC at 80 Am ps connected to it in order t o operat e. The
220 VAC I nput connect s to the Term inal Block ( TB1), locat ed in the upper right rear of the
Cabinet, that is part of (A2) the AC Dist ribution Panel ( 1276- 1200) . The AC Dist ribut ion Panel
cont ains Six Circuit Breakers t hat supply t he AC t o the rest of the Translat or.
The I nput AC from TB1 is connected to (CB1) t he Main AC Circuit Breaker ( 80 Am ps) which
dist ribut es t he 220 VAC t o t he Term inal Block ( TB2). TB2 has t hree MOVs, m ount ed t o the
Term inal Block, one connect ed from each leg of the I nput AC t o ground and one across the two
legs. The I nput AC is wired from TB2 t hrough five Circuit Breakers, CB2, CB3, CB4, CB5 & CB6 to
the rest of the Translator. CB2 ( 10 Am ps) supplies t he AC volt age t o the I EC Outlet Strip (A1)
into which the UHF Excit er, t he Optional Receiver Tray and any other Opt ional Accessories are
connect ed. CB3 ( 20 Am ps) supplies AC t hrough J5 to the (A6) UHF Am plifier Tray. CB4 ( 20 Am ps)
supplies AC t hrough J6 to the (A7) UHF Am plifier Tray. CB5 ( 20 Am ps) supplies AC t hrough J7 to
the (A8) UHF Am plifier Tray. CB6 (20 Am ps) supplies AC t hrough J8 to the (A9) UHF Am plifier Tray.
When the UHF Excit er circuit breaker is sw it ched On, + 12 VDC is supplied t o the UHF Am plifier
Trays for operat ion of the LED Stat us I ndicat ors in the Tray.
I n put a nd Re m ot e Conne ct ions
The On Channel RF I nput from t he Ant enna connect s t o J5 for 75Ω or J1 for 50Ω located on t he
rear of t he VHF/ UHF Receiver Tray. Jacks J10 and J11 on the rear of t he UHF Excit er provides
connect ions for Rem ot e Monit oring and Operat ion of the Translat or. Jack ( J11) should have a
dum m y plug connect ed t o it which has a jum per bet ween Pins 23 & 24 that provides t he I nt erlock
needed t o operat e t he Translat or. I f rem ot e connect ions are m ade to the Translator they should
be m ade through the plug in J10 or J11 in the posit ions not ed on the I nt erconnect Drawing (1276-
8000).
The (Opt ional) Rem ot e I nt erface Assem bly, if present , provides connect ions for Rem ot e Monit oring
and Operat ion of the Translator at Jack ( J9 & J10) . Jack (J9) should have a dum m y plug
connect ed to it which has a jum per bet ween Pins 21 & 22 that provides t he I nt erlock needed t o
operate the Translat or. I f rem ot e connect ions are m ade to the Translator they should be m ade
through t he plug in J9 or J10 in t he posit ions not ed on the I nt erconnect Drawing (1276-8000) .
I n st r u ct ion M anua l D e scription
The I nst ruct ion Manual is divided int o sect ions t hat are labeled as t o t heir content s. The first
m ain sect ion is the Syst em Section that contains t he Param et ers and Specificat ions of the 836A
along wit h the Sit e Preparat ion, I nst allation, Syst em Set Up, Alignm ent and Operation Procedures.
The Block Diagram and I nt erconnect for t he Translat or are also found in the Syst em Section.
The Manual is furt her divided int o Tray and Assem bly Sect ions. Each Tray or Assem bly Sect ion of
the Manual contains t he Block Diagram s, Cont rol Locat ion Drawings and I nt erconnect s of that
Assem bly or Tray. Each of t he Sect ions also cont ains t he Circuit Descript ions and Det ailed
Alignm ent Procedures for t hat Tray or Assem bly.
The Schem at ics, Parts Locat ion Drawings and the Replacem ent Parts List s for t he individual boards
that m ake up the Trays and Assem blies in the Translat or are locat ed in the Subassem bly Section
of the Manual. There is a Drawing List at t he beginning of the Subassem bly Sect ion that list s t he
drawings in the order t hey appear in t he section.