User's Manual

General Guidelines
Troubleshooting 7-5
After the power-on
test is finished, the
sign-on message is
displayed on the PC,
and the DATA LED is
flashing only
when a
Transponder is
activated.
After the power-on
test is finished, the
sign-on message is
displayed on the PC,
but the DATA LED is
not flashing when a
Transponder is
activated.
The configurations of the
Transponder and the Reader
do not match.
The carrier threshold value is
too high.
1. Using a Test Transponder TST95 that has
been programmed for your application,
test the Reader’s receiving capability.
2. If you can receive transmitted messages
from the TST95, the Transponders are
either not correctly configured for your
application, or they are out of
specifications. Reprogram the
Transponders and check whether the
Reader can receive messages.
3. If you cannot receive transmitted
messages from the TST95, the Reader has
an incorrect configuration. Go to Steps 4
and 5.
4. Check whether the DAR parameter and
the Group R parameters are set according
to the application’s specifications.
5. With this new set of parameters, check
whether the Reader can receive
transmitted messages from the TST95. If
the Reader can receive the messages, save
its configuration, by typing the following
commands and pressing <Enter> after
each command:
:CONFIG:STORE,
:RESET.
1. Run the procedure, S21 RFID System -
Final Test on page 5-15. Step 2 - Set up the
Carrier Threshold for the Reader.
2. If the Reader reports a channel noise level
below -95dBm, but you are still not
receiving the Transponders’ messages,
check the noise level reported by the
Reader with and without connected UHF
antennas. If the noise level is identical or
varies slightly (±1 dBm), replace the
Reader.
3. Check the HNL and RSS parameter
values.
Problem Symptom Probable Cause Solution