User's Manual

Test Set Calibration – continued

FEB 2005 1X SC 4812T Lite BTS Optimization/ATP 3-105

PRELIMINARY

Calibrating Test Cabling using

a Communications System

Analyzer

Prerequisites

S Test Equipment is turned on and has warmed–up for at least 60

minutes.

S Test Equipment has been selected in the LMF (Table 3-29 or

Table 3-30).

S Test Equipment has been calibrated and correctly connected for the

type of Test Cable Configuration to be calibrated.

LMF Cable Calibration cannot be accomplished with an

HP 8921A Analyzer for 1.9 GHz. A different analyzer

type or the Signal Generator and Spectrum Analyzer

Method (Table 3-33 and Table 3-34) must be used.

Cable Calibration Values must be manually entered into

the LMF Test Cable Insertion Loss File if the Signal

Generator and Spectrum Analyzer Method is used.

To use the HP 8921A for Manual Test Cable

Configuration Calibration for 800 MHz BTSs, refer to the

Manual Cable Calibration section of Appendix F.

NOTE

Procedure

Refer to Figure 3-12, Figure 3-13, or Figure 3-14 and perform the

procedure in Table 3-32 to calibrate the Test Cable Configurations.

Table 3-32: Test Cabling Calibration using Communications System Analyzer Procedure

n Step Action

1 Click Util in the BTS Menu Bar, and select Cable Calibration... in the Pull–down Menu.

–A Cable Calibration Window is displayed.

Enter one or more Channel Numbers in the Channels Box.

NOTE

Multiple Channel Numbers must be separated by a comma with no spaces (for example,

200,800).

– When two or more Channel Numbers are entered, the cables are calibrated for each channel.

– Interpolation is accomplished for other channels, as required, for TX Calibration.

table continued on next page