User manual

6-4 N9360A Multi UE Tester GSM User Manual
6 Troubleshooting
Attach process fails in
GPRS mode.
Does the mobile phone
require Detach process?
Some kinds of GPRS mobile phones are confirmed that they
require Detach from Attached condition.
In this case, the Tester cancels Attached condition. Retest
from Location Update.
—— is displayed at the
measurement results.
Is the mobile phone
connected to the Tester
correctly?
Make sure that the mobile phone is connected to the
Tester,and start the test.
Is there interference from the
external noise?
Shut out external noise by using the shield case, etc.
Is the format of the signal
inputted to the Tester the
same as the setting value of
the Tester?
Set the Signal on the [TX Analyzer] screen according to the
actual signal format,and start the test.
Is the slot configuration set
correctly?
Set the Slot Config on the [Manual Test] screen according to
the multislot class of the mobile phone, and start the test.
Is the Test loop or the Test
Mode set correctly?
Set the Tes t L oo p or Te st Mod e on the [Manual Test] screen
according to the Test mode capability of the mobile phone,
and start the test.
Is error information displayed
on the Graph/Value screen?
Execute the action according to each error information, and
start the test.
The MS power level is too
low or too high. Check
PWR CNTL, the cable
Connections and loss
value is displayed on the
Graph/Value screen.
Is the mobile phone
connected to the Tester
correctly?
Make sure that the mobile phone is connected to the
Tester,and start the test.
Is the transmission power of
the mobile phone low?
Raise the transmission power of the mobile phone to the
level within a measurable range.
Is there interference from the
external noise?
Shut out external noise by using the shield case, etc.
Is path loss set correctly? Set path loss between the Tester and a mobile phone at Loss
on the [Configuration] screen
Burst not found is
displayed on the
Graph/Value screen.
Is the transmission power of
the mobile phone low?
Raise the transmission power of the mobile phone to the
level within a measurable range.
Is the format of the signal
inputted to the Tester the
burst wave?
Set the Signal on the [TX Analyzer] screen to Burst,and start
the test.
Table 6-1 Item to be checked
Symptom Section to be checked Remedy