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JD780A Series Analyzers
Appendix F – Motorola CDMA/EV-DO LMF
Motorola's CDMA/EV-DO base stations (BTS) are optimized with the assistance of Local Maintenance
Facility (LMF), a Motorola's software tool that interfaces with the cell site and the instrument. The
optimization process identifies the accumulated loss (or gain) for all receiving and transmitting paths at
the cell site and stores that value in the system's database.
Using JD780A series LMF interface
An emulation interface to LMF has been implemented in JDSU's base station analyzer (JD785A) in
order to perform BTS optimization procedures. The scope of this emulation is to do maintenance tests
of TX Calibration and TX Audit required in routine maintenance practices with or without the use of an
external power sensor. Using the external power sensor, you can get highly accurate measurement
results.
Setting up for a LMF test
Procedure
1.
To connect your instrument both with BTS and PC, do one of the following:
–
Internal power sensor: Connect the Motorola CDMA/EV-DO BTS with the Spectrum
Analyzer RF In 50 Ω port of JD785A and connect the WinLMF running PC with JD785A via
a hub as illustrated in the Figure 301.
–
External power sensor: Connect an external power sensor to the USB Host port of JD785A
and to the BTS and connect the WinLMF running PC with JD785A via a hub as illustrated in
the Figure 302.
Figure 301 Using internal power sensor
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Appendix
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