Configuration manual Reader
10
Modifications, misprints and errors excepted.
English
2.
Description of the configuration parameters
Important!
Close field antennas have a negative gain, since they are designed not for electromagnetic coupling with the
tag but for magnetic coupling. To configure close field antennas correctly, enter the antenna gain as 5.25 dBic
(a parameter value of 21 dec) and the antenna radiated power (“RFPower1...8”) as the maximum input power stated
in the antenna data sheet.
2.3.3.
“RSSIThreshold1...8”
Characteristics:
available from firmware:
v1.30.00
Data type:
Byte (8-bit)
Unit:
-
Value range:
0; 255
Description:
When the reader is performing an inventory, at the same time the field strength of the response from the tag that is
addressed is measured. This is called the RSSI value. These parameters allow the threshold value for the RSSI value
to be set for each antenna port. Tags with an RSSI value less than the threshold setting are then no longer detected
by the reader.
2.3.4.
“MultiPowerTagAccess1...8”
Characteristics:
available from firmware:
v1.30.00
Data type:
Bool (8-bit)
Unit:
-
Value range:
0; 255
Description:
The stronger the reader transmission signal that strikes the tag, the more difficult it is for the tag to modulate the
reader transmission signal by means of backscatter. The strength of the tag response thus decreases as the reader
transmission power increases. Because of this behaviour in certain circumstances it may occur that the reader can
no longer read a tag which is immediately in front of the antenna, but at a lower transmission power it can easily
detect it. If “MultiPowerTagAccess” is activated for an antenna port, after an inventory with high transmission power,
the reader reduces the transmission power by a half and searches for “overlooked” tags.
2.3.5.
“MaxAllowedAntennaOutputPower1...8”
Characteristics:
available from firmware:
v1.30.00
Data type:
Byte (8-bit)
Unit:
¼ dBm(erp)
Value range:
0-255
Description:
This parameter allows the radiated power of the antenna at an antenna port to be limited to a specified value.
