User's Manual

General Guidelines
Troubleshooting 7-7
Time-out error.
(At the command
:TEST:EXCITER k, the
response is 00, but the
Main PC does not receive
a message, or a correct
message from the Test Tag
of the Exciter k after a
predetermined period of
time).
DATA LED is
flickering, the
Reader’s Tag Record
Buffer contains
messages from the
Test Tag.
DATA LED is
flickering, but the
Reader’s Tag Record
Buffer is empty.
DATA LED is not
flickering
Test tag was incorrectly
programmed.
Test tag was incorrectly
programmed.
Exciter’s Test Tag is placed
beyond the limits of the
receiving zone, or there is a
random interference on the
UHF channel, or the Test Tag
is out of specifications.
range. When using multiple Transponders,
some messages are lost due to the inherent
collision between them.
1. Query the Test Tag programming
parameters using
:TAG:QUERY:EXCITER k.
2. Check the value of all group T
parameters.
3. Correct the values using the group W
parameters.
4. Reprogram the Test TAg using the
command
:TAG:MATCH:EXCITER k.
1. Query the Test Tag programming
parameters using
:TAG:QUERY:EXCITER k.
2. Check the value of all group T
parameters.
3. Correct the values using the group W
parameters.
4. Reprogram the Test Tag using the
command
:TAG:MATCH:EXCITER k.
1. Run the procedure, S21 RFID System -
Final Test on page 5-15. Step 2 - Set up
the Carrier Threshold for the Reader.
2. Check the RF level of the messages
received from the Test Tag; it must be
higher than (
RSS+HNL+3)dBm, that
means 3dB above the carrier threshold
value.
Note
The Reader reports the RF level of the
received message only if the parameter
DLI=Y.
3. If the RF level of the Test Tag’s received
messages is lower than -85dBm,
either reposition the Reader or Exciter, or
use a higher gain UHF antenna for the
Reader.
Problem Symptom Probable Cause Solution