Nokia Solutions and Networks T6FE1 User Manual

FEB 2005

 H-1

This procedure is a guide to performing Calibration of new BTS
expansion carriers while the system remains in service. This procedure
also supports BTS Recalibration following replacement of RF Chain
components while the remainder of the site stays in service.

Motorola recommends performing this procedure during a Maintenance
Window.

This procedure cannot be performed on BTSs with 2–to–1 

Combiner

s.

The procedure can only be performed on one carrier of the BTS at a
time. That is, 

LPA Modules

 1A, 1B, 1C, and 1D can be calibrated while

LPA Modules

 3A, 3B, 3C, and 3D remain in service and vice versa.

Equipment STabilization and
Calibration

Calibration of the Communications Test Set (or equivalent
Test Equipment) must be performed at the site before
calibrating the overall Test Equipment Set.

Calibrate the Test Equipment after it has been allowed to
warm-up and stabilize for a minimum of 60 minutes.

If any component of the Test Equipment Set (for example,
a Test Cable, RF Adapter, Signal Generator) has been
replaced, the Test Equipment Set must be recalibrated.

Failure to do so could introduce Measurement Errors that
ultimately result in degradation of system performance.

In–Service Calibration (ISC) of 1X carrier functions requires using the
following Test Equipment for the purposes indicated:

S

An Advantest R3267 Spectrum Analyzer to perform TX Calibration.

S

An Advantest R3562 Signal Generator for R3267 Delta Power
Calibration.

S

An Agilent E4406A Transmitter Test Set to perform TX Calibration

S

An Agilent E4432A Signal Generator for E4406A Delta Power
Calibration.

S

An Agilent 8935 Series E6380A equipped with Option 200 (if
purchased new) or option R2K (if retrofitted) to perform TX
Calibration.