User Manual

In–Service Calibration – continued
Jan 2002
G-15
SC4812ET BTS Optimization/ATP — CDMA LMF
Follow the procedure in Table G-5 to perform the In–Service
Calibration.
Table G-5: In–Service Calibration
Step Action
* IMPORTANT
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:
– Start the LMF by double–clicking the LMF icon on the Windows desktop.
– Click Tools>Options from the menu bar at the login screen.
– Check the applicable spectrum analyzer check box and the signal generator check box on the Test
Equipment tab.
Ensure that the GPIB address is 18 for the CDMA analyzer and 1 for the signal generator.
– Uncheck any other other equipment that is selected.
– Click the Apply button.
– Select the BTS Options tab in the LMF Option window.
– Check the In–Service Calibration check box.
– Click the Apply button.
– Click the Dismiss button to close the LMF Option window.
2 Login to the target BTS:
– Select the target BTS icon.
– Click the Login button at the login screen.
3 Measure the Cable Loss using the Cable Calibration function:
– Click Util>Cable Calibration from the menu bar at the main window.
– Set the desired channel(s) and select TX and RX CABLE CAL at the cable calibration pop up
window.
– Click the OK button to perform cable calibration.
– Follow the on–screen instructions to complete the cable loss measurement.
NOTE
– The measured value is input automatically to the cable loss file.
– To view the cable loss file, click Util>Examine>Cable Loss>TX or RX.
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