Nokia Solutions and Networks T5ZR1 User Manual
Test Set Calibration
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PRELIMINARY 2
July 1999
3-55
SC 4812ET BTS Optimization/ATP – CDMA LMF
Table 3-27: Selecting Test Equipment Using Auto-Detect
Action
Step
4
Click on Auto–Detection if it is not enabled.
5
Type in the GPIB addresses in the box labeled GPIB address to search, if the GPIB addresses are
not already displayed.
not already displayed.
NOTE
When both a power meter and analyzer are selected, the first item listed in the GPIB addresses to
search box will be used for RF power measurements (i.e., TX calibration). The address for a
power meter is normally 13 and the address for a CDMA analyzer is normally 18. If 13,18 is
included in the GPIB addresses to search box, the power meter (13) will be used for RF power
measurements.
search box will be used for RF power measurements (i.e., TX calibration). The address for a
power meter is normally 13 and the address for a CDMA analyzer is normally 18. If 13,18 is
included in the GPIB addresses to search box, the power meter (13) will be used for RF power
measurements.
6
Click Apply. (The button will darken until the selection has been committed.) A check mark will
appear in the Manual Configuration section for detected test equipment items.
appear in the Manual Configuration section for detected test equipment items.
7
Click Dismiss to close the LMF Options window.
Calibrating Test Equipment
The calibrate test equipment function zeros the power measurement level
of the test equipment item that is to be used for TX calibration and audit.
If both a power meter and an analyzer are connected, only the power
meter is zeroed.
of the test equipment item that is to be used for TX calibration and audit.
If both a power meter and an analyzer are connected, only the power
meter is zeroed.
The Calibrate Test Equipment menu item from the Device menu list is
used to calibrate test equipment. The test equipment must be selected
before beginning calibration. Follow the procedure in Table 3-28 to
calibrate the test equipment.
used to calibrate test equipment. The test equipment must be selected
before beginning calibration. Follow the procedure in Table 3-28 to
calibrate the test equipment.
Table 3-28: Test Equipment Calibration
Step
Action
1
From the Util menu, select Calibrate Test Equipment. A Directions window is displayed.
Follow the instructions provided.
Follow the instructions provided.
2
Click on Continue to close the Directions window. A status window is displayed.
3
Click on OK to close the status report window.
Calibrating Cables
The cable calibration function is used to measure the loss (in dB) for the
TX and RX cables that are to be used for testing. A CDMA analyzer is
used to measure the loss of each cable configuration (TX cable
configuration and RX cable configuration). The cable calibration
consists of the following steps.
TX and RX cables that are to be used for testing. A CDMA analyzer is
used to measure the loss of each cable configuration (TX cable
configuration and RX cable configuration). The cable calibration
consists of the following steps.
Measure the loss of a short cable. This is done to compensate for any
measurement error of the analyzer. The sort cable, which is used only
for the calibration process, is used in series with both the TX and RX
measurement error of the analyzer. The sort cable, which is used only
for the calibration process, is used in series with both the TX and RX
3