User's Manual

6.5 Equipment Room Installation – Inside Equipment
1. Customer to furnish cabinet or open-frame 19” equipment rack.
a. Cabinet racks to be secured to floor per local earthquake standards. Open frame
racks must be secured and braced at the top as required by local codes and
practice.
b. Minimum recommended clearances for equipment access and operation: 24” in
the rear and 36” in the front for cabinet racks, proportionally greater for open
frame racks.
c. Bond at least one side of front rack rail to the inside ground bus bar (item C1,
above) with properly terminated (minimum) #6 copper cable [or copper ground
strap of equivalent cross-sectional area].
2. All electronic equipment: Wireless CMTS (W-CMTS), PC(s), upconverters, power
supplies, Ethernet switches, routers, UPS, etc. to be secured to the rack by at least four
standard 10-32 rack screws.
3. If vertical rack space permits, it is desirable to leave one rack unit (RU = 1 ¾”) between
each rack-mounted device. At minimum, one space should be left above heat
generating devices such as rack mount PCs.
4. Support all large heavy devices (PCs, UPS) with manufacturer-provide rear mounting
hardware, or at minimum, a 1 RU blank rack panel secured across the rear
rack rails in
the space immediately below the device to be supported such that the bottom of the
device rests on the top edge of the panel.
5. Furnish at least one dedicated
120 VAC 20 amp power circuit to a suitable receptacle(s)
within two feet of the equipment rack. In areas of “dirty” power, protect all equipment
with at least an appropriately sized shunt type power line protector.
6. Arcwave strongly recommends protecting the entire base station facility (including all
outdoor equipment) with a suitable uninterruptible power supply (UPS). One unit
Arcwave has found to be sized appropriately for one of its base stations is an APC 2U
rack mount SmartUPS 1400 VA-RM
. Ensure that the UPS is bonded to the rack or
ground bus per manufacturer’s instructions.
7. In addition to the equipment power circuit specified in item E5 (above), provide additional
120 VAC outlets in the vicinity of the equipment rack for portable test equipment, laptop
computer chargers, etc.
8. Furnish suitable ambient and task lighting in the vicinity of the equipment rack to permit
installation and maintenance activities.
9. Provide for building security appropriate to the installation environment.
6.6 Base Station Installation Documentation
1. Complete documentation immediately after system turn-up.
2. One complete copy is to be kept in a loose-leaf binder at the base station for
maintenance personnel access and hand updates. At least one-second copy is to be
provided to the system operator.
3. Every wire and cable is to be labeled with a suitable permanent wire marking system.
Examples of label text are: “Sector 3 U/S”, or “DC to Sector 1”.
4. Many antenna installers utilize bands of colored tape to identify cabling running from the
equipment room to the antennas. If so installed, a ‘key’ to the coding must be furnished,
e.g., “red-red-yellow = Sector 1 D/S”
5. All 12 dB taps and signal splitters to be labeled: “Sector 1 D/S”
June 2003 Page 6-3