Instruction Manual
Table Of Contents
- Contents
- Figures
- Tables
- General Safety
- Introduction
- Preliminary Operations
- Optimization/Calibration
- Automated Acceptance Test Procedures (ATPs)
- Leaving the Site
- Basic Troubleshooting
- Data Sheets
- Test Matrix
- BBX Gain Set Point vs BTS Output
- CDMA Operating Frequency
- PN Offset/I & Q Register
- Test Equipment Preparation
- In-Service Calibration
- Index
Initial Power Up – continued
DRAFT
SC4812ET BTS Optimization/ATP — CDMA LMF
Apr 2001
2-4
Failure to connect the proper AC feed will damage the
surge protection module inside the AC load center.
CAUTION
Power Up Sequence
The first task in the power up sequence is to apply AC power to the
Power cabinet. Once power is applied a series of AC Voltage
measurements is required.
Table 2-3: AC Voltage Measurements
Step Action
1 Measure the AC voltages connected to the AC load center (access the terminals from the rear of the
cabinet after removing the AC load center rear panel). See Figure 2-2.
2 Measure the AC voltage from terminal L1 to neutral. This voltage should be in the range of nominally
115 to 120 V AC.
3 Measure the AC voltage from terminal L1 to ground. This voltage should be in the range of nominally
115 to 120 V AC.
4 Measure the AC voltage from terminal L2 to neutral. This voltage should be in the range of nominally
115 to 120 V AC.
5 Measure the AC voltage from terminal L2 to ground. This voltage should be in the range of nominally
115 to 120 V AC.
6 Measure L1 – L2 – should be from 208 to 240 V AC.
If the AC voltages are in excess of 120 V (or exceed
200 V) when measuring between terminals L1 or L2 to
neutral or ground, STOP and Do Not proceed until the
cause of the higher voltages are determined. The power
cabinet WILL be damaged if the Main breaker is turned
on with excessive voltage on the inputs.
CAUTION
2