User's Manual
8 3 6 A 2 k W UHF Tr a nslat or , I nt erna lly Diple x ed M e t e r s, Sw it ches, I ndica t ors and Sa m ples
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UHF Ex cit e r Tra y:
N a m e Function
“M et ering”
Met er ( A4 - A1 8 ) Reads power in t erm s of a percent age of the calibrat ed Output
Power level on the upper scale. The Voltage Level is read on
one of t he bott om two scales. A full scale reading on the top
scale is 100% , which is equivalent t o the full rat ed 2000 Wat ts
Peak of Sync Visual. Also reads % Aural Power, % Excit er
Power, % Reflect ed Power and ALC reading.
Switch ( S3) , Met er Select s t he desired ALC Volt age reading, % Exciter Power, %
Reflected Power, % Visual Power or % Aural Power.
ALC Reads the ALC Voltage Level, .8 VDC, on the 0-10 scale.
( 0-10 V)
% Excit er Reads the % Excit er Output Power Level needed t o at t ain
100% Out put of the
( 0-100) Transm it t er on t he t op scale.
% Aural Power Reads t he % Aural Out put Power of t he Transm it t er, 100% =
200 Wat ts @
( 0-100) 10 dB A/ V Ratio, on t he t op scale.
% Visual Power Reads the % Visual Out put Power of t he Transm it t er, 100% =
2000 Wat t s
( 0-100) Pk Sync, on t he t op scale.
% Reflect ed Reads t he % Reflected Out put Power, < 5% , on the t op scale.
( 0-100)
“Cont r ol”
Sw it che s
Transm it t er ( S1) The m om ent ary swit ch (S1) applies a ground t o K1, a lat ching
Operat e/ St andby Operat e/ St andby relay, locat ed on the Transm it t er Cont rol
Board. K1 will swit ch eit her t o Operat e or t o St andby
depending on which direct ion S1 is pushed. When swit ched t o
Operat e, t he low, Enable Com m ands, are applied to the four
UHF Am plifier Trays. These Enables will turn on the UHF
Am plifier Trays. The opposite occurs when swit ched to
St andby.
Mode Select ( S2) The m om ent ary swit ch (S2) applies a ground t o K2, a lat ching
Auto/ Manual relay, locat ed on the Transm it t er Cont rol Board. K2 will swit ch
the Transm itt er t o Aut om at ic or Manual depending on which
direct ion S2 is pushed. I n Autom at ic, the Video Fault Com m and
from t he ALC Board will cont rol the Operat ion of the
Transm it t er. The Transm it t er will swit ch to St andby, after a
slight delay, if t he input video is lost and will swit ch back t o
Operat e, quickly, when t he Video is rest ored. I n Manual, the