Amplifier
The amplifier consists of two parallel hybrids (Amplifier A, Amplifier B). The current
consumption and the temperature of both hybrids are monitored. For monitoring the
temperature an alarm and warning threshold can be set. The nominal temperature
range of the amplifier is -10
o
C up to +55
o
C.
Block diagram
OPA 8500
2 - 6
Output amplifier
Putting into operation
RF 5
e
RF 3
e
RF 7
e
RF 9
e
RF 2
e
RF 6
e
RF 4
e
RF 8
e
RF 10
e
RF OUT
m
RF OUT
m
Amplifier A
Amplifier B
RF 1
e
Output amplifier
Pilot
frequency
FM signals
Wobbler or
TV signals
or
QAM signals
RF
a
OU
T
LCD/
Keyboard
RS
232
Alarms
Ethernet
Monitoring/
Control
Power Supply
Main
s
1
230/1
1
5
VAC
Main
s
2
230/1
1
5
VAC
