Hitachi E-Compact Medium Power Series, Operation Manual, Page: 27 / 106

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E-Compact Medium Power
H
G
F
E
D
C
B
A
8 7 6 5 4 3 2 1
H
G
F
E
D
C
B
A
8 7 6 5 4 3 2 1
5. Block Diagram
Block Diagram EC702MP / EC704MP
DOUBLE EXCITER
GND
AC INPUT
AC in
AC in
AC in
AC in
AC in
Backup ATSC Exciter
(NOT INCLUDED)
Ethernet Switch
(OPTIO NAL)
Mai n CM8001 Control Module
Backup CM8001 Control Module
(OPTIONAL)
PA702MP / PA704MP
Power Amplifier
MOD 40090A – Fly back 15/8V 25W
MOD 40032 – RF Coaxial Rel ay
(OPTIO NAL)
Eth
er
n
et
co
m
m
.
Eth
er
n
et
co
m
m
.
Eth
er
n
et
co
m
m
.
Comm. I/O
C
om
m
. I
/O
Comm. I/O
AC Supply
UHF
UHF
UHF
UHF
PA710MP – Power Amplifier
MOD 40243
EIA 1-5/8"
Low Pass Filter
M
O
D
4
02
1
5
R
F
S
am
p
le
E
IA
1
5
/8
"
ANTENNA
RF OUT
RF IN
RF OUT
RF OUT
TS IN
TS IN
RF SAMPLE
B. FILTER
Exc. Backup
RF Spliter 1:2
(OPTIO NAL)
Mask Filter
( NOT INCLUDED )
RF Input switch
Mai n ATSC Ex ci ter
(NOT INCLUDED)
AC in
Eth
er
n
et
co
m
m
.
B. FILTER
Exc. Main
B. FILTER
B. FILTER
U
H
F
RF OUT
RF OUT
RF IN
RF IN
U
H
F
U
H
F
A
C
in
A
C
M
a
in
s
P
ro
te
cti
o
n
U
n
it
10dB
Attenuator
R
F S
am
p
le
P
o
w
er
A
m
p
lifi
er
(+
10
dB
m
)
R
F S
am
p
le
Po
w
er
A
m
pli
fier
(+
10
d
B
m
)
10dB
Attenuator
( NOT INCLUDED )
( NOT INCLUDED )