User's Manual
Table Of Contents
- Chapter 1: Introduction
- Chapter 2: Preparatory Tasks
- Chapter 3: Optimization/Calibration
- Introduction to Optimization and Calibration
- Preparing the LMF
- Overview of Packet BTS Files
- LMF Features and Installation Requirements
- LMF File Structure Overview
- LMF Home Directory
- NECF Filename Conventions and Directory Location
- LMF Installation and Update Procedures
- Copy BTS and CBSC CDF (or NECF) Files to the LMF Computer
- Creating a Named HyperTerminal Connection for MMI Communication
- Span Lines - Interface and Isolation
- LMF to BTS Connection
- Switching the Active LAN - LMF I/O Panel 10Base-2 LAN Connection
Pre–Power–up Tests – continued
FEB 2005 1X SC 4812T Lite BTS Optimization/ATP 2-7
PRELIMINARY
Table 2-2: DC and AC Power Pre–test (BTS Frame) Procedure
n ActionStep
2a Unseat all circuit boards (except the CCD and CIO Cards) in the SCCP Cage and CLPA Shelves,
but leave them in their associated slots.
2b Set both of the SCCP Cage Circuit Breakers to the OFF position by pulling out their Power
Distribution Circuit Breakers (labeled SCCP 1 and SCCP 2).
– These circuit breakers are located on the Power Distribution Panel.
2c Set the four CLPA Circuit Breakers to the OFF position by pulling out the CLPA Circuit
Breakers (four Circuit Breakers, labeled LPA 1A–1D through LPA 2A–2D).
– These circuit breakers are located on the Power Distribution Panel.
2d Select your type of BTS Frame.
S Proceed to Step 3 for –48V Systems.
S Proceed to Step 4 for +27V Systems.
3 For –48V Configurations ONLY:
Perform the following actions to verify that the resistance on the –48V Bus.
3a Remove the Power Supply Modules (PSMs).
3b Verify that the resistance from the Positive (+) Power Feed Terminal with respect to the Ground
Terminal on the top of the frame measures > 500 Ω.
– Refer to Figure 2-4.
3c Verify that the resistance from the Negative (–) Power Feed Terminal with respect to the Ground
Terminal on the top of the frame measures > 500 Ω.
– This assumes that Customer Interface Cabling and Grounding has been installed; otherwise,
the measurement should be < 5 Ω.
– Refer to Figure 2-4.
4 For AC Configurations ONLY:
Perform the following actions to verify that the resistance on the AC Frame.
n WARNING
Ensure that the AC Circuit Breaker is OFF (and tagged/locked) prior to proceeding.
Confirm that AC Voltage is not being applied to the BTS Frame.
4a Measure the resistance from L1 with respect to the Ground Terminal on the top of the frame
measures >10 kilohm.
– Refer to Figure 2-4.
4b Access the L1 Terminal on the AC Filter or probe the L1 Socket in the PSM Slot.
– Lightly probe the socket to avoid damaging the socket.
4c Measure the resistance from L2/N with respect to the Ground Terminal on the top of the frame
measures >10 kilohm.
– Refer to Figure 2-4.
table continued on next page
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