User's Manual

Table Of Contents
In–Service Calibration – continued
FEB 2005 1X SC 4812T Lite BTS Optimization/ATP H-25
PRELIMINARY
Perform the procedure in Table H-6 to perform the In–Service
Calibration.
Table H-6: In–Service Calibration Procedure
n Step Action
NOTE
Perform this procedure after Test Equipment has been allowed to warm–up and stabilize for a
minimum of 60 minutes.
1 Set–up the LMF for In–Service Calibration:
1a Start the LMF by double–clicking the LMF Icon on the Windows Desktop.
1b Click Tools > Options from the Menu Bar in the LMF Application Window.
1c In the LMF Options Window, check only the applicable Communications System Analyzer
Check Box on the Test Equipment Tab.
1d Ensure that the GPIB Address is 18.
1e Uncheck any other other equipment that is selected.
1f Click the Apply Button.
1g Select the BTS Options Tab in the LMF Options Window.
1h Check the In–Service Calibration Check Box.
1i Click the Apply Button.
1j Click the Dismiss Button to close the LMF Options Window.
2 Log into the target BTS:
2a Select the target BTS Icon.
2b Click the Login Button at the Login Screen.
3 Measure the Cable Loss using the Cable Calibration Function:
3a Click Util > Cable Calibration... in the BTS Menu Bar in the Main Window.
3b Set the desired Channel(s) and select TX and RX CABLE CAL from the Cable Calibration
Window Pull–down Menu.
3c Click the OK Button to perform Cable Calibration.
3d Follow the on–screen instructions to complete the Test Cable Insertion Loss Measurement.
NOTE
The measured value is input automatically to the Test Cable Insertion Loss File.
To view the Test Cable Insertion Loss File, click Util > Examine > Cable Loss from the BTS
Menu Bar.
table continued on next page
H