TX RX Systems Inc. Manual 7-9487-3 05/05/11 Page 6
50
LNA
A
Surge
792-824
Filter
Amp
Select
Switch
A Term
Switch
B Term
Switch
Control
Board
CPU
Amp
Select
Switch
+12VDC
+12VDC
3 dB
50
LNA
B
Surge
RS-485 Tap
DC Tap
RS-485
+12VDC
Antenna
Main
Test
428B
TTA Assembly
792-824 MHz
Filter
Alarm
NC
COM
NO
NC
COM
NO
Alarm
Modem
DC Inject
CPU
Front
Panel
Assembly
Expansion Port
16 Way Divider
2 Way Divider
Variable
Attenuator
Variable
Attenuator
LNA
+12VDC
RS-485
+12VDC
Power
Supply
Test Port
Main
Test
428B
MCU Assembly
Figure 5:
Functional block diagram of the MCU TTA system.
Содержание 428B-83H-01-C-110
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