User's Guide

UHF Amplifi er Instruction Manual
IM23-UT400AMP
v
Contents
General Information ...............................................................1
Introduction ................................................................................................1
Theory of Operation ...............................................................3
Amplifi er Operation ....................................................................................3
Power Requirements .................................................................................4
RF Circuitry ................................................................................................4
UT-3/400 Lowpass Filter................................................................................. 4
Power Control Circuitry................................................................................... 4
Power Sensing Circuitry ................................................................................. 4
Output Power Sense ...................................................................................... 5
VSWR Sense.................................................................................................. 5
VSWR Overload ............................................................................................. 5
UT-3/400 Amplifi er Alignment.................................................7
General ......................................................................................................7
Repair Note................................................................................................ 7
Recommended Test Equipment List .......................................................... 8
Standard Factory Settings and Jumper Confi guration ...............................8
UT-3/400 Amplifi er Alignment..................................................................... 8
UT-3/400 Amplifi er Adjustment ....................................................................... 9
General Set-Up............................................................................................... 9
Output Power Alarm (Forward Power).......................................................... 10
Output Power................................................................................................ 10
Antenna VSWR Alarm (Reverse Power) .......................................................11
Procedure Verifi cation ...................................................................................11
Illustrations and Schematics ................................................ 13
UT-3/400 UHF Amplifi er Component Layout............................................ 14
UT-3/400 UHF Amplifi er Schematic Diagram........................................... 15
UT-3/400 Amplifi er Low Pass Filter Component Layout .......................... 16
UT-3/400 Amplifi er Low Pass Filter Schematic Diagram ......................... 16
Parts Lists ............................................................................ 17
Electrical Parts List .................................................................................. 17
Mechanical Parts List............................................................................... 20
Revsion History.................................................................... 21