Hitachi E-Compact Medium Power Series - Power Amplifier Block Diagram

51 | 106
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
6.2.3. Power Amplifier Block Diagram
Block Diagram
PA702MP
Power Supply 1
Power Supply 2
(OPTIONAL)
PA 1
PA 2
Alarms Led
Driver
FAN 1
FAN 2
FAN 3
Control
Fan Control
Alarms Led
PA Control
REF Power
FWD Power
Drive Control
Control Module / Exciter Int erface
Communication – Drawer Address
Power Supplies Interface
Communication
USB Comm
+5Vcc
Power Supplies Comm.
USB Comm
DC Power Line
42 ~50 VDC
2400 Watts MA X
Control Module / Exciter
Comm. – Drawer Address
Power Amplifiers
FWD REF
SAMPLE
+5Vcc
Control Module / Exciter Comm. – Drawer Address
Comm
RF SAMPLE
+10dBm (-43 dB)
RF IN
0.0 ~ 8.0 dBm
AC Line
AC Input
AC Input
DC Power Line Output 42
~50VDC
DC Power Line Output 42
~50VDC
Power Supplies Comm.
Power Supplies Comm.
Communication.
Communication.
+5VCC
+5VCC
+5VCC
+5VCC
Reflectometer
Peak
Carrier
470 ~ 806MHz
GAIN = +52dB ±4dB
POUT: 215 W @ ATSC3.0
POUT: 225 W @ ATSC1.0
PA702MP
RF OUT
53.30 to 53.52 dBm
11
NOTES:
1 – See PA702MP
Channel Range
Table