Technical Manual

Technical Manual AM Systems
Cross Point Device Explorer v4.4 Page 56 of 72
The threshold level can be adjusted in two ways; automatically or manually
Automatic threshold level adjustment
Tick the Automatic threshold checkbox to activate automatic threshold level adjustment.
Depending on the environmental noise levels, the transceiver will automatically and
continuously adjust its threshold level higher than the noise levels.
The Minimum threshold option will prevent the threshold level from getting too low,
potentially making the system too sensitive.
Manual threshold level adjustment
Un-tick the Automatic threshold checkbox to activate manual threshold level adjustment.
By entering a value manually or by pushing the up or down arrows, the required threshold
level can be set. Alternatively, the slider next to the scope view can be moved up or down
to set the required level.
Sensitivity
The sensitivity slider can be used to decrease or increase the total sensitivity of the
antenna. The default value is 10 and you can increase the sensitivity to 20, or decrease it
to 1.
Noise
The noise level indicator shows a value between zero and one hundred, which represents
the amount of noise that’s being detected by this receiver. A high noise level will result in
reduced detection, which means that specified detection distances might not be
achieved. To improve this situation the noise source(s) must be located and removed. If
removal of the noise source is not possible, the aisle width between the antennas needs
to be reduced, which means that the transceiver and receiver antennas need to be
installed closer to each other.
Never adjust the antenna too sensitive, as this will result in false alarms!
Remove the noise sources that interfere with the system or move the
antennas as far as possible awa
y from noise sources.
Synchronization AM 8.7.5.2
When multiple AM systems are installed in relative close vicinity of each other, it is of
extreme high importance that the transmission bursts of all transmitters (transceivers)
occur at the same moment. To be able to view and change the position of these
transmission bursts, the Synchronization screen is available.
When the Synchronization screen is open, the transmission burst of this
transceiver is disabled. As a result of this, the transceiver and
connected receiver(s) will not detect any tags! Make sure to leave this
screen to enable detection of tags again.
When the transmission bursts are not synchronized properly, false alarms and reduced
sensitivity will be the result. The Synchronization screen will show exactly if and where
other system transmission bursts are detected.