RFL 9785 - Figure 9-14. RFL 9508 RF Motherboard, Rear View; Table 9-3. Motherboard Rear Panel Connector Assignments

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
9.2.9 RFL 9508 RF MOTHER BOARD
RX OUT
4W RX
4W TX
OR 2W I/O
EXT AMP IN
TX IN
EXT AMP
OUT
EXT AMP
FAIL IN
ATTENUATOR RX LINE BALANCE TX
BOARD FILTER BOARD BOARD FILTER
NOTE: Dotted lines indicate boards that plug into the motherboard from the front of the RFL 9508 chassis.
C
NO
NC
C
NO
NC
CHASSIS GND
EARTH GND
INT
AMP
FAIL
EXT
AMP
FAIL
Figure 9-14. RFL 9508 RF Motherboard, rear view
9.2.9.1 DESCRIPTION
The RFL 9508 RF Motherboard is a 4.5 x 8 inch assembly, which is mounted on the rear right side of the 9508
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, Rx Filter. Figure 9-
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 9-3. Motherboard Rear Panel Connector Assignments
Board Label Reference Connector type Application
Designation
TX IN J1 BNC Tx In from 9780/85
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 9780/85
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 9-4 for TB1 terminal assignm
ents)
RFL 9785 RFL Electronics Inc.
May 16, 2011 9-17 (973) 334-3100