User's Manual
Initial Power-up68P09255A69-3
Aug 2002
1X SC4812ET Lite BTS Optimization/ATP Software Release 2.16.1.x
PRELIMINARY
2-5
Initial Power-up
Introduction
The following information is used to check for any electrical short
circuits and to verify the operation and tolerances of each frame at the
site before applying power for the first time. It contains instructional
information on the proper initial power up procedures for the SC4812ET
Lite stand-alone and companion frames for both the North American
version and the International version. If directions are different for either
version, they are called out within the procedure. Please pay attention to
all cautions and warning statements in order to prevent accidental injury
to personnel.
NOTE
Unless otherwise noted, all procedures in this section are to be
followed for each frame at a site.
Required Tools
The following tools are used in the procedures.
Clamp-on DC current probe (600 A capability with jaw size to
accommodate 2/0 cable).
Digital Multimeter (DMM) with standard 2mm (.080”) tip probes
Hot Air Gun - (optional for part of the Alarm Verification)
Cabling Inspection
Using the site-specific documentation generated by Motorola Systems
Engineering, verify that the following cable systems are properly
connected:
Receive RF cabling - up to six RX cables
Transmit RF cabling - up to six TX cables
For companion frame installations, inter-frame RX diversity cabling -
six RX cables
NOTE
For DC power applications (+27 V):
The positive power cable is red.
The negative power cable is black. (The black power cable is
at ground potential.)
Initial Inspection and Setup
CAUTION
Ensure all battery shelf circuit breakers (Figure 2-3) for unused
battery positions are set to OFF (pulled out) before and during
the entire power up process. Leave these breakers in the OFF
position when leaving the site.
Table 2-2: Initial Inspection and Setup
Step Action
1 Be sure that the facility circuit breaker controlling external AC power supplied to the frame is set to
OFF.
2 Be sure that all AC Load Center (ACLC) (Figure 2-4 or Figure 2-5), all DC Power Distribution
Assembly (PDA) (Figure 2-6), and all battery shelf circuit breakers (Figure 2-3) are set to OFF.
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