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
- Page 2 of 4 -
Transm it t er is cont rolled by t he Operat or using t he front panel
Operat e/ St andby Swit ch or by rem ot e control.
Power Adj ust (R1) The 5 kΩ Pot A20 set s t he ALC Level on the ALC Board which
sets t he out put power of the Transm it t er.
UHF Ex cit e r Tra y:
N a m e Function
“St a t u s ”
Fault I ndicat ors
Video Loss ( DS9 RED) I ndicat es t hat the I nput Video has been lost t o the Translator.
The Fault is generated on the ALC Board located in the UHF
Excit er Tray.
VSWR Cut back ( DS7 Am ber) I ndicat es t hat Reflected Power Level of the Translat or has
increased above 20 % which will aut om at ically cut back t he
Out put Power Level t o 20 % . The Fault is generat ed on the
Transm it t er Cont rol Board locat ed in the UHF Excit er Tray.
“Sam ples”
f( s) A Sam ple of the Channel Oscillat or Output t aken from
the Sam ple Jack of t he Channel Oscillat or Assem bly.
Excit er O/ P An Out put Power Sam ple of the Exciter t aken from the UHF
Upconvert er Board.
Translat or O/ P A Forward Power Sam ple of t he Translat or t aken form t he
Visual/ Aural Met ering
Board.
VHF/ UHF Receiver Tr a y
“ Sam ples”
f( I F) Output A Sam ple of the I F Out put t aken from t he I F Filt er/ ALC Board.
F( s) Oscillator A Sam ple of the Channel Oscillat or Out put t aken from the
Sam ple Jack of t he Channel Oscillat or Assem bly.
UHF Am plifier Trays:
“ M et ering”
Met er ( A6 , A7 , A8 & A9 - A9 ) Reads power in term s of a percent of the calibrat ed power
output value. A full scale reading is 100% which is equivalent
to t he full rat ed 600 Wat t s Peak of Sync Visual + Aural Output