RF Reserves for Installation, Preventative Maintenance and Acceptance

2. 1. Antenna should be fixed by double nuts

3. 1. Antenna should be fixed
vertically

4. Connectors should be sealed well by scotch
and 3M
Fix the Sealing using black tie wraps at top at
bottom of sealing

5. No obstacles blocking RF antenna radiation

6. 1. Mechanical ,electrical tilts and height must
applied as the design sheet delivered

7. RF antenna azimuth should be typically as per
design

8. 1. Antenna should be installed as per design
sheet height

9. 1. CPRI cables must be installed separately
from cabinet Roxtec.
2. CPRI cables must be installed through
flexible tubes under BTS to protect them.

10. Must be fixed well with clamps to avoid wind
problems

11. Connectors between feeders and
jumpers must isolated well
1. All cables must install in good
arrangement till reaching the BTS cabinet
entrance.
2. install the cables inside flexible tubes
under the BTS to protect fiber , power , E1 and
alarm cables.
3. Use black wide plastic tie wraps to arrange
the cables and avoid any crossing.
4. Fill the flexible outlets with silicon.
5. fabricate the cable tray according to each
case dimensions.
6. close the cable tray after finishing your
work.

12. 1. Feeder clamps stage should be installed every two
meters.
2. Feeders to be installed vertically in sharp straight
way.

13. Each band and each
Sector get a different color
at its jumpers,

14. 1. Earth kits installation every 15-20 m
2. Earth kits sealing with high quality sealing
3. Earth kits connected to buss bar with tight bolts

15. Must be sealed with
Scotch and black taps

16. 1. Every Earth kit Cable to be connected in one
Buss bar bolts.
2. Earth kit cables to be routed downward to
Buss bar.
3.In case of Buss bar congested, Approved to
connect two cables in the same bolt.

17. Feeders should be installed parallel
and in clamps every 2 meters and tray
should be not congested and closed
properly

18. Sweep test (VSWR, DTF & Return Loss) should be pass
* ** 1 < VSWR < 1.4
*** 1 < DTF < 1.05
*** RL > 15.60 dB

19. Jumpers should be installed in S-
shape without any sharp pending or
extra tension and without any crosses

20. 1. Install RRUs always on brackets , don’t
install directly on tower leg.
2. RRU should be installed vertically.
RRU must be fixed
well on the
Bracket

21. 1. Don’t install RRU on the ground to avoid
losses in signal.
2. In case of facing special site “Palm, Mono
pole,…Etc” need to install RRU on the
ground; you have to request approval from
Client as the design may be changed. And
sweep test results should be in approved
range

22. Earth cable
1. Connect earth cable of RRU to nearest
earth bar on tower.
2. Earth cable of RRU must be fixed well using
the two bolts.
Earth Cable of
RRU

23. Tie Wraps on the
Bottom
Tie Wraps on
the Top
Connectors should be sealed well by scotch
and 3M
Fix the Sealing using black tie wraps at top at
bottom of sealing

24. Fixation clamps
1. Install the fiber cables on tower using
fixation clamps as shown, one stage every
feeder clamps stage
2. Installation of the cables must be in good
arrangement and parallel to avoid any crossing.
3. spacing between clamps is 1.5m.

25. 1. Install fiber cables through macaroni flexible in BBU.
2. Install fiber cables inside thermal flexible tube from
RRU port to the 1st clamp on the tower.
3. Arrange Power and fiber cables using double clamps on
the tower till cable tray entrance by 50 cm.
4. Use flexible tube before cable tray entrance and after
entrance till cabinet entrance by 50 cm.
5. Arrange Power and fiber cables using double clamps in
the cable tray till entrance of cabinet.

26. Fiber extra length should be arranged and
routed in cable tray in circles and without
sharp pending, every cable has separate extra
length circle
need photo for indoor solution

27. Printed labels
Fiber cables should be labeled correctly and in
case of plastic labels have wrong description, it
is allowed to use printed label in this way

28. 1. For OD we Connect the RRUs either to the C.Bs of APM
for DBS3900 (20 A or 25 A according to the Version of
the APM) or through New DC BOX which Contain (10*
30 A) Fuse.
2. For ID, we deliver DC BOX with the ID Site in order to
connect the RRUs to the Rectifier.
3. The 30A is designed to meet the requirement of higher
power consumption of BBU/RRU in the future.
4. DC grounding as shown