Hitachi EC702MP-BB3 Operation Manual page 26

Uhf digital tv transmitters
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8
7
H
MP-BB3 BLOCK DIAGRAM
G
FBA in
FBF i n
F
E
RF Out
Control Module / Exciter
block
AC Pow er
D
Control I / O
C
MCCB
MOD 40323 – _ 2 kW
B
A
8
7
6
PA 708 HP
Sample OUT ( FWD )
RF SAMPLE
Sample OUT ( FWD )
PA
PA 704 MP Power Amplifier
RF In
EMC / EMI
PA AC Power line
filter
AC Mains
6
5
4
E-Compact MP-BB3 Series
O
/
FBA in ( Exciter )
Control I
.
RF Sampl e
Comm
RF Out
5
4
3
Bandpass Filter
Lowpass Filter
FC6D60C @EC702MP-BB3
MOD 40243
FC6D80C @EC702MP-BB3
3
2
1
RF Sample
MOD 40 215
EIA 1 - 5 / 8 "
EIA 7 / 8 " ( Optional )
DIN 7 / 16 " ( Optional )
After Filter :
Sample Out A ( FWD )
Sample Out B ( FWD )
Sample Out C ( REF )
Sample Out D ( FWD )
26 | 108
2
1
H
G
F
E
D
C
B
A

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