User manual

Biomark HPR and HPR Plus User Manual
Page 18 of 41
4.2 RF Settings & Diagnostics
Detailed information and settings related to the Radio Frequency (RF) functions of
the device are configured in the RF Menu screen. This is accessible from the Main
Menu by pressing the down arrow key.
RF Settings
This screen indicates the present antenna tuning setting, power setting, peak-to-
peak antenna voltage, and RMS antenna current. Three bar graphs show the
amount of "noise" (radio interference) present.
FDX-B Noise
– This is the amount of interference that will affect the read range of
FDX-B tags. The higher the noise the lower the read range will be. FDX noise will
jump to 99% while a FDX tag is being read, this is normal.
HDX Noise – This is the amount of interference that will affect the read range of
HDX tags. The higher the noise the lower the read range will be. HDX noise will
jump to 99% while a HDX tag is being read, this is normal. HDX noise should
normally track the background noise value fairly closely unless HDX specific
interference is present.
BKG Noise – This is the amount of background noise that will affect the read range
of both FDX-B and HDX tags.
Possible sources of noise include:
 Adjacent metal objects
 Other electronic equipment
 Motorized equipment
 Structures with embedded reinforcing steel
 Excessive vibration
 Excessive water fluctuation or water splashing onto the antenna
 Adjacent power lines or power generating equipment
 Adjacent antennas that are in operation
 Overhead lights and power lines