User's Manual Part 2

Chapter 6 Maintenance
6.5.14.2 7/8” Independent Output Coupler/Detector Installation
Any RF cable, which is terminated with a SMA connector, should be
tightened with a 5/16” torque wrench to avoid over tightening and
damaging the cable connector or mating connector.
The replacement 7/8” independent output coupler/RF detector should be installed in the
following sequence:
1. Carefully line up the replacement independent output coupler/RF detector with the
7/8” unflanged rigid waveguide visible on the HPA compartment frame backplane. The
arrow on the independent output coupler/RF detector should be pointing upwards.
Ensure the pipe clamp is fitted loosely around independent output coupler/RF detector
input connector and 7/8” unflanged rigid waveguide.
2. Push the independent output coupler/RF detector onto the 7/8” unflanged rigid
waveguide until it stops – see Figure 6-19
.
3. Carefully line up the 7/8” EIA flange to 7/8” unflanged adapter with the independent
output coupler/RF detector output connector, which is visible through the opening in
the back of the cabinet – see Figure 6-19
. Ensure the pipe clamp is fitted loosely
around one of the connectors before they are pushed together.
4. Using two hands, push the 7/8” EIA flange to 7/8” unflanged adapter and independent
output coupler/RF detector together – see Figure 6-19
.
5. Replace the four (4) 10-32 socket head cap screws (with #10 lock washers) which
secure the 7/8” EIA flange to 7/8” unflanged adapter to the back of the cabinet – see
Figure 6-19
.
6. Tighten the pipe clamp, which is fitted around the independent output coupler/RF
detector output connector and the 7/8” EIA flange to 7/8” unflanged adapter – see
Figure 6-19
.
7. Tighten the pipe clamp, which is fitted around the independent output coupler/RF
detector input connector and 7/8” unflanged rigid waveguide – see Figure 6-19
.
8. Re-connect the serial cable (SX03-10904-01) to the independent output coupler/RF
detector serial port – see Figure 6-19
.
9. Re-connect the RF cable (SX03-10908-07) from the independent output coupler/RF
detector forward coupling port – see Figure 6-19
.
10. Re-connect the transmission line or jumper cable to RF Output Port where applicable.
Replace the three (3) 1/4-20 hex head bolts (with 1/4” flat washers and lock
washers).
11. Switch ON the LB HPA PSU circuit breaker (CB2), located on the PDU.
12. Using the LBE GUI, place the LB sub-system in transmit_only mode.
13. Close the HPA compartment rear door and the electronics compartment front door.
SX03-10000-01-M01 6-43