User manual

Biomark HPR and HPR Plus User Manual
Page 19 of 41
The RF Menu allows the user to configure the following:
4.2.1 Tuning
The HPR Plus allows for manual or auto tuning of the antenna. The HPR Plus
Reader will continuously automatically tune the antenna for peak antenna
current/voltage.
NOTE: Using auto tuning will reduce the number of tag reads per second from 10
to 8.
4.2.2 Power
The transmit output power to the antenna can be set to one of 15 different power
levels. The higher the power, the greater the tag read range. However, keep in
mind this is not always a linear relationship. That is, the amount of read range
increase will become less and less with each step up in power setting. Use the
lowest practical power setting to prolong battery run time.
NOTE: Use a power setting below 70% for the handheld loop antenna. Any power
setting above this will not result in a useful read range increase and will
significantly reduce battery run time.
4.3 Testing the Unit
The supplied Fish RFID Keychain Test Tag can be placed near the loop antenna to
verify correct operation of the unit. This tag is an FDX-B tag. When the RFID tag is
placed on-axis, i.e. the fish pointing into the loop, the tag should have read range
of approximately 10cm from the centre of the loop, depending on the power setting.
The tag ID will appear on the display and the Reader may beep and/or the tag read
indicator will flash blue, depending on the audible and visual indicator settings.
NOTE: The antenna and tag should not be placed on or near any metallic object
while reading, as this will significantly reduce the tag read range.
The Antenna and FDX-B Test Tag