User manual

Troubleshooting 6
N9360A Multi UE Tester GSM User Manual 6-5
TSC not found is displayed
on the Graph/Value
screen.
Does the signal inputted to
the Tester contain a training
sequence code (TSC)?
Input the signal which contains a TSC to the Tester. If the
measurement is carried out with the signal which does not
contain any TSC, set the None at Midamble on the [TX
Analyzer] Screen. If None is set, Part of test items may not
be carried out.
Is the TSC of the signal
inputted to the Tester the
same as the setting value of
the Tester?
Input the signal which contains the same TSC as the value
set at Midamble on the [TX Analyzer] Screen, and start the
test.
Is the modulation scheme of
the signal inputted to the
Tester the same as the
setting value of the Tester?
Input the signal whose modulation scheme is the same as
the value set at Demod on the [TX Analyzer] Screen, and
start the test.
Does this symptom occur on
the [Automatic Test] or
[Manual Test]?
The mobile phone is sure to be signaled to use TSC5 by the
Tester. The mobile phone may use a different TSC from TSC5.
Does this symptom still
occur in spite of above four
remedies?
The signal quality of the mobile phone may be bad
remarkably.
It exceeds the retrial
number of times of the
measurement is displayed
on the Graph/Value
screen.
Is the modulation scheme of
the signal inputted to the
Tester the same as the
setting value of the Tester?
Input the signal whose modulation scheme is the same as
the value set at Demod on the [TX Analyzer] Screen, and
start the test.
TSC out of range is
displayed on the
Graph/Value screen.
Does the TSC position within
the slot over the air deviate
from the appropriate TSC
position remarkably?
The TSC position within the slot may exceed a allowable
range. In case of GMSK, let the TSC position be within
±10symbols. In case of 8PSK, let the TSC position be within
±4symbols.
Tester seems to stop
measuring though it has
started the
measurements.
Is the Averaging of the test
items except BER/BLER, the
BER Frames (BER) or BLER
Frames (BLER) high?
When the Averaging of the test items except BER/BLER, the
BER Frames (BER) or BLER Frames (BLER) is high, it takes
long time to finish measuring the test items. The screen
display of the tester does not change during the
measurements. The time for measuring, which is indicated by
T
Mes
[unit: sec], depends on the test items. Refer to
Tab le 6-2 . Until this time, the measurements are executed
and tester is not out of order.
Table 6-1 Item to be checked
Symptom Section to be checked Remedy