User's Guide

Rev. 1
HEXAPAD 10 BC USB
8.5.4.19 rssifilter - Reading filter by RSSI
Command
rssifilter value
Function
Check (no value) or change the cutoff value of the RSSI filter for reading.
Description
The signal level of the tag indicates whether the tag is near or away from the antenna,
when closer to the antenna, the stronger the RSSI (closer to zero) and vice versa. If a
value is specified for the filter, only tags with RSSI equal to or greater than that specified
will be reported by the reader.
The signal level of the tag is measured in dBm and is a negative value, i.e. the
power in Watts is always less than 1mW.
Pattern
0
Values
0..99
Notes
To disable the filter, write the value 0.
The specified value should not contain the minus sign.
Example
To check the filter value:
rssifilter<CR>
0<CR>
To change the filter value to 45:
45<CR rssifilter>
ok - parameter has been changed.<CR>
Errors
When the value reported is not among the specified:
error - value out of range<CR>
When more than one value is passed to the command:
error - too many args.<CR>
NOTE:
The filter by the RSSI value of the tag is used to restrict unwanted reading
areas around the reader. It should always be used in conjunction with the reading power.