RFL Electronics GARD 8000 - Figure 10-10. 9508 RF Chassis Block Diagram

Power Line Carrier
GARD 8000 SYS RFL Electronics
April 23, 2015 10-21 973.334.3100
2W/4W OU T
J7
4W IN
J6
POW ER SUPPLY
50W POW ER AMP
50W TX F ILTER
+BATTERY
-B ATTERY
PW R FAIL-C OM
PW R FAIL NO
PW R FAIL NC
+92V
+30V
GND
TB1-1
TB1-2
TB1-3
TB1-4
TB1-5
+92V
+30V
GND
SIG NAL IN
SIG NAL OUT
GND
FAIL OUT
50W TX F ILTER
POW ER SUPPLY
50W POW ER AMP
+BATTERY
-B ATTERY
PW R FAIL-C OM
PW R FAIL NO
PW R FAIL NC
+92V
+30V
GND
TB1-1
TB1-2
TB1-3
TB1-4
TB1-5
+92V
+30V
GND
SIG NAL IN
GND
FAIL OUT
SIG NAL OUT
ADDITIO N AL 3U CHASSIS FOR 100W SYSTEM S
ALARM
RELAY
ALARM RELAY_1
EXT AMP F A IL C OM
EXT AMP F A IL -NC
EXT AMP F A IL -NO
IN T A M P F AIL C OM
IN T A M P F AIL -NC
IN T A M P F AIL -NO
FAIL
G ND
FAIL
G ND
BALANCE B OARD
IN P U T P O R T 1
SIG N A L O U T
IN P U T P O R T 2
IN P U T
SIG N A L O U T
BALA N CE T R A N SFORMER
IN P U T
SIG N A L O U T
RX CONNEC TION BOA R D or RX F ILTER
DUM M Y L O A D & AT TENUATO R
IN P UT
TX O UT
RX OUT
LINE BOAR D
IM PEDANCE MATC HING
SURG E PRO TE CTIO N
ADJUSTA B LE ATTENUA TO R
IN P U T S IG NA L O U T
IN P U T S IG NA L O U T
SIG N A L O U T INPUT
IM PE D ANCE M A TCHIN G _ 1
SIG N A L O U T INPUT
BALANCE COM PONENTS
HYBRID
TX INPUT
BALANCE PORT
SIG NAL OUT
RX OUTPUT
2 W ire
4 W ire
4 W ire
2 W ire
LOOPBAC K
4 W ire
IN P UT
TX
J1
POW ER SUPPLY
50W POW ER AMP
50W TX F ILTER
RX
J8
IN P U T
SIG N A L O U T
Figure 10-10. 9508 RF Chassis Block Diagram
10.8.1 50 WATT POWER AMPLIFIER
The Power Amplifier is mounted on the front cover of the 9508 RF Chassis. The function of the Power
Amplifier is to amplify the RF outputs of the GARD 8000 before these signals are passed to the line
coupling equipment. The Power Amplifier develops an RF output of 50 Watts. A green LED is located
on the left side of the Power Amplifier front panel as shown in the Figure below. The LED is ON when
the power amplifier is transmitting.
Figure 10-11. 9508 RF Chassis Power Amplifier
In those applications that require 100 Watts of RF output, two 50 Watt Power Amplifiers are used. The
second 50 Watt Power Amplifier is mounted in a 3U chassis directly above the RFL 9508 chassis as
Green LED