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Troubleshooting
Errors While Attempting Measurements
Chapter 6
125
Troubleshooting
Errors While Attempting Measurements
The following error messages might be posted once a test mode has begun making
measurements:
• Code domain power test failed. Use the BTS Laptop Utility program to correct the
problem and to return all configured BBAs back to active status. Press the
Abort key
to return to main menu.
If the Test System is unable to correlate the code domain power measurements, this
error will result. Check the following items and re-run the test:
•Entry in the Channel Number field in the Base Station Configuration Menu
This could be a problem if you are not using a PC to control the Base Station via
the MSC. If you enter the wrong channel number, the Test Set will be tuned to an
incorrect frequency. You may use the spectrum analyzer mode to verify the
presence of a signal.
•Entry in the PN Offset field in the Base Station Configuration Menu
If you have entered an incorrect value for the PN offset, the Test Set will not be
able to correlate CDMA measurements. You may use the PN Offset Search test
from the Main Menu to find the valid PN offset value (see “PN Offset Search Test”
on page 79).
• Even-second clock connection
Check the connection from the source of the even-second clock (at the Base
Station). You might have to set the TST CLK switch to the ON position to enable
the clock signal. The even-second clock signal should be connected from the Base
Station to the EVEN SECOND SYNC IN port on the Test Set.
• Timebase reference clock connection
Check the connection from the source of the timebase reference signal (typically
19.6608 MHz) at the Base Station. You might have to set the TST CLK switch to
ON to enable the reference signal. The timebase reference should be connected to
the REF IN port on the Test Set (there are alternative connections; see Chapter 3,
“Connections,” on page 45). If a valid clock signal is present during testing, the
front-panel Unlock LED on the Test Set will be off.
• Transmitter turned on at time of testing
If you are using a PC connected to the MSC for Base Station control, the Test Set
will turn on the transmitter when required for testing. You may verify that the
transmitter is on by checking the green ACT LEDs on the front of the ACU and
BCR modules. If you are not using the PC, you will have to enable the transmitter
manually when prompted by the Test Software.