Module Descriptions, RFL 9508D RF Section
7.9
RFL 9508D RF MOTHER BOARD
FOR JUMPER SETTINGS ON REVERSE
SIDE OF BOARD SEE FIGURE 5-22
RX OUT
4W RX
4W TX
OR 2W I/O
EXT AMP IN
TX IN
EXT AMP
OUT
EXT AMP
FAIL IN
ATTENUATOR
BOARD
NOTE: Dotted lines indicate boards that plug into the motherboard from the front of the RFL 9508D chassis.
C
NC
NO
C
NC
NO
CHASSIS GND
EARTH GND
INT
AMP
FAIL
EXT
AMP
FAIL
RX FILTER
LINE BOARD
BALANCE
BOARD
TX FILTER
Figure 7-14. RFL 9508D RF Motherboard, rear view
7.9.1
DESCRIPTION
The RFL 9508D RF Motherboard is a 4.5 x 8 inch assembly, which is mounted on the rear right side of the
9508D chassis as viewed from the front. It provides interconnections for the five RF modules that plug into
it from the front of the chassis, which are the TX Filter, Balance Board, Line Board, Attenuator Board, and
Rx Filter. Figure 7-14 shows the rear view of the motherboard. Connectors J6 and J7 are TNC connectors
which provide connections to the line coupling equipment. J4, J5, J8 and J9 are BNC connectors, J10 is a
two pin plug-in connector, and TB1 is an eight position terminal block.
Table 7-3. Motherboard Rear Panel Connector Assignments
Board Label
Reference
Designation
Connector type
Application
TX IN
J1
BNC
Tx In from MA-650
EXT AMP IN
J5
BNC
Input signal from external amp
EXT AMP OUT
J3
BNC
Output signal to external amp
4W RX
J6
TNC
4W Input from line coupling equipment
4WTX OR 2WI/O
J7
TNC
4W Output to line coupling equipment or 2W Input/Output
RX OUT
J8
BNC
Rx Out to MA-650
EXT AMP FAIL IN
J10
Two-pin plug-in type
External Amp Fail input
INT AMP FAIL
TB1
8-position terminal block
Power Amplifier Fail, Relay Contacts
EXT AMP FAIL
(See Table 7-4 for TB1 terminal assignments)
RFL 9508D UCC
RFL Electronics Inc.
December 1, 2010
7-17
(973) 334-3100
