User's Manual

Chapter 3 Installation
3.6.6 Repeater Cabinet Mechanical Assembly
The contr
ol cabinet, LB HPA cabinet, HB HPA cabinet and OFN cabinet should be positioned
according to site diagrams and fastened together according to the DRU-2KW mechanical
drawing(s).
The DRU-2KW cabinets should be positioned and fastened together in the following sequence:
1. Position the LB HPA cabinet according to site drawings.
2. Using a spirit level, ensure that the LB cabinet is level from front to back and side to
side. Shims can be used to level the cabinet.
3. Position the OFN cabinet according to site drawings and the DRU-2KW mechanical
drawings SX03-30000-02-D01 or SX03-30000-03-D01.
4. The OFN cabinet height must be adjusted so that the WR340 waveguide flange on the
side of the OFN cabinet is lined up with the WR340 flange on the side of the LB HPA
cabinet.
5. The OFN cabinet feet can be adjusted to level the cabinet – see Figure 3-6
.
a. Loosen the top 1/2” nut.
b. Turn the bottom 1/2” nut clockwise or counterclockwise to raise or lower the
cabinet foot.
c. Tighten the top 1/2” nut once the cabinet is level.
6. Using a spirit level, ensure that the OFN cabinet is level from front to back and side to
side. Adjust the feet where necessary – refer to step 7.
7. Position the HB HPA cabinet according to site drawings and the DRU-2KW mechanical
drawings SX03-30000-02-D01 or SX03-30000-03-D01.
8. Using a spirit level, ensure that the HB cabinet is level from front to back and side to
side. Shims can be used to level the cabinet.
9. The OFN cabinet height may need to be adjusted slightly so that the WR340 flange on
the side of the HB cabinet is lined up with the WR340 waveguide flange on the side of
the OFN cabinet – refer to step 4.
10. Place a WR340 half gasket (UBS p/n SX03-24101-02) into the WR340 flange groove,
located on the side of the LB HPA cabinet.
11. Secure the OFN cabinet WR340 waveguide to the LB HPA cabinet WR340 flange by
installing a 1/4-20x1-1/8” socket head cap screw with #12 flat washer and 1/4” lock
washer in each of the threaded holes (10 total) – see Figure 3-7
. NOTE: Do not fully
tighten the screws until the cabinets have been fully aligned.
12. Place a WR340 half gasket (UBS p/n SX03-24101-02) into the WR340 flange groove,
located on the side of the HB HPA cabinet.
13. Secure the OFN cabinet WR340 waveguide to the HB HPA cabinet WR340 flange by
installing a 1/4-20x1-1/8” socket head cap screw with #12 flat washer and 1/4” lock
washer in each of the threaded holes (10 total) – see Figure 3-8
. NOTE: Do not fully
tighten the screws until the cabinets have been fully aligned.
SX03-30000-01-M01
3-13