User's Manual Part 3

In–Service Calibration – continued
DRAFT
SC4812ET BTS Optimization/ATP — CDMA LMF
Apr 2001
G-14
Table G-4: In–Service Calibration
Step Action
4 Add the spectrum analyzer power delta to the Cable Loss.
– To view the cable loss file, click Util>Examine>Cable Loss.
– Add the value computed in Table G-1, Table G-2, or Table G-3 to the TX Cable Loss.
NOTE
Be sure 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 = 6.20 dBm
– 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:
– Click Util>Edit>TX Coupler Loss from the menu bar at the main window.
– Input the appropriate coupler loss for the target carrier(s) by referring to the information taken at
the time of BTS installation.
– Click the Save button.
– Click the Dismiss button to close the window.
– To view the coupler loss file, click Util>Examine>TX Coupler Loss.
6 Input the Coupler Loss for the RX tests:
– Click Util>Edit>Cable Loss from the menu bar at the main window.
– Add the appropriate coupler loss to the cable loss for the target carrier(s) by referring to the
information taken at the time of BTS installation and input this value in the Cable Loss field.
– Click the Save button.
– Click the Dismiss button to close the window.
– To view the cable loss file, click Util>Examine>Cable Loss.
7 Have the CBSC operator put the redundant BBX2 OOS_MANUAL.
! CAUTION
Be sure to download OOS devices only. Loading in–service devices takes them OUT OF SERVICE
and can result in dropped calls.
The code file version numbers must match the version numbers on the other cards in the frame. If the
numbers do not match, the site may go OUT OF SERVICE.
NOTE
Be sure to include the redundant BBX2 in steps 8, 9, and 10.
. . . continued on next page
G