User's Manual

Setting Up the Carrier Threshold
5-10 Configuration and Operation
Ensure that both UHF antennas are connected. If you are not using Diversity, disable it by
typing:
HAD=N<Enter>
Ensure that only
the right UHF antenna is selected (see the HAS parameter).
4. Check the noise level on the UHF channel, by typing:
HNL<Enter>
The HNL value should be between -107 to -95dBm.
If the HNL value is higher than -95dBm, check if there are unwanted transmissions on the
UHF channel (433.9 MHz). Pay special attention to Transponders or Exciters in close
proximity to the Reader; these can accidentally transmit data that can be received by the
Reader.
If the HNL value is lower than -105dBm, check its value without the UHF antennas attached.
The difference between these two readings must be greater than 3dB.