VP1007-B / Installation manual
Version 01.000 / November 2020 / EN
15
Livestock Management
Antenna power (AP)
1. Go to
HF > H1 or H2 > AP
in the menu to check the antenna power setting.
The default antenna power level is 99 (maximum value).
2. If necessary, adjust the setting of the antenna power
AP
.
Decreasing the antenna power level will reduce the reading distance of the antenna.
Increasing the antenna power level will increase the reading distance of the antenna, but the reading
distance is also dependent on conditions like external noise, tag quality and antenna configuration.
Antenna squelch (AS)
With Antenna squelch you can set a threshold for the ID level of an EID tag. There is a relation between ID
strength (RSSI) of a tag and the squelch level, and both values range from 0 to 99. Tags read with an RSSI value
lower than the squelch level will not be identified.
RSSI
: The Received Signal Strength Indication is an indication of the signal strength received by the receiver.
The higher the RSSI value, the stronger the signal.
Squelch
: The traditional squelch circuit is an audio switch controlled by the radio signal level using a fixed or
manually adjustable threshold (level). When the received signal strength falls below this, the receiver is muted.
When the VP1007-B reads the tag with an RSSI level below this threshold, the tag will not be read.
Figure 2: Antenna squelch (AS) diagram
1. Received tag numbers are not transferred.
A. Antenna Squelch (0 to 99%)
2. Received tag numbers are transferred.
AS. Antenna Squelch setting (between 0% and 99%)
1. Go to
HF > H1 or H2 > AS
in the menu to check the antenna squelch setting.
The default antenna squelch value is 0% (most sensitive setting). At the lowest value there is no threshold
and all received tag data will be identified.
2. If necessary, adjust the antenna squelch value
AS
to set the correct threshold.
The maximum value is 99%. At this value no received tag data will be identified.
Antenna tuning with option "AA"
With the option Adjust Antenna (AA), you can follow the antenna tuning on the display of the VP1007-B.
The antenna can also be tuned using the TUNING LED on the display (see Tune the antenna).
1. Go to
HF > H1 or H2 > AA
in the menu to check the antenna tuning setting.
A value will appear on the display. The highest display value is the optimum adjustment.
2. Turn the antenna trimmer slowly.
The display value will change.
3. If the value decreases, turn the antenna trimmer the other way.
