User's Manual

In–Service Calibration – continued
H-26 1X SC 4812T Lite BTS Optimization/ATP FEB 2005
PRELIMINARY
Table H-6: In–Service Calibration Procedure
n ActionStep
4 Add the Communications System Analyzer Power Delta to the TX Cable Loss.
4a In the BTS Menu Bar, click Util > Edit > Cable Loss... > TX.
4b Add the value computed in Table H-4, Table H-5, or Table H-3 to the TX Cable Loss.
NOTE
Ensure to include the sign of the value.
The following examples are included to show the mathematics and do not represent actual
readings:
– Example: 5.65 dBm + 0.55 dBm = 6.20dBm
– Example: 5.65 dBm + (–0.29 dBm) = 5.36 dBm
– Example: –5.65 dBm + 0.55 dBm = –5.10 dBm
– Example: –5.65 dBm + (–0.29 dBm) = –5.94 dBm
5 Input the Coupler Loss for the TX Tests:
5a In the BTS Menu Bar, click Util > Edit > Coupler Loss... from the Menu Bar in the Main
Window.
5b Select the TX Coupler Loss Ta,b if not in the foreground.
5c Enter the appropriate Coupler Loss for the target carrier(s) by referring to the information taken at
the time of the BTS Installation.
5d Click the Save Button.
5e Click the Dismiss Button to close the window.
5f To view the Coupler Loss File, click Util > Examine > Coupler Loss in the BTS Menu Bar.
6 Input the Coupler Loss for the RX Tests:
6a In the BTS Menu Bar, click Util > Edit > Coupler Loss... from the Menu Bar in the Main
Window.
6b Select the RX Coupler Loss Tab, if not in the foreground.
6c Enter the appropriate Coupler Loss for the target carrier(s) by referring to the information taken at
the time of the BTS Installation.
6d Click the Save Button.
6e Click the Dismiss Button to close the window.
6f To view the Coupler Loss File, click Util > Examine > Coupler Loss in the BTS Menu Bar.
table continued on next page
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