User's Manual

General Guidelines
7-6 Troubleshooting
4. If the value of (HNL + RSS) is higher
than -85dBm, there is either an unwanted
transmission on the UHF channel, or the
value of the
RSS parameter is too high.
The value for the RSS parameter must
be between 10 and 20.
5. Check whether there are Transponders or
an Exciter’s Test Tag in the immediate
vicinity that transmit messages
accidentally.
6. Run the procedure, Setting Up the Carrier
Threshold again, and monitor the value
for the HNL parameter after each setup.
7. For procedures on eliminating the
unwanted transmission, refer to Chapter 4,
Setup Guidelines in the 95 Series RFID
System Technical Guide.
Reader does not record all
transmitted messages.
Reader does not
record all transmitted
messages by the
Transponder.
The receiving zone is too
small because of either a
high carrier threshold, or
there is random interference
on the UHF channel.
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 you observe a random variation of noise
and interference on the UHF channel,
either increase the value of the
RSS
parameter, or set the
HTL parameter to a
higher value than the one that was
automatically set by the Reader.
3. If the receiving zone is too small after you
set a higher carrier threshold, follow the
setup guidelines recommended in Chapter
4, Setup Guidelines in the 95 Series RFID
System Technical Guide.
Note
A UHF channel is subject to random noise
and interference. The Reader disregards the
messages with data errors. For an optimal
channel, free of interference and industrial
noise, the Reader must be able to receive all
messages transmitted by a single
Transponder placed in its reading
Problem Symptom Probable Cause Solution