Commands
7-39
range can be adjusted for 32 discrete values where 00 is the shortest range and 1F is
the longest range. The default range value is 1F.
Reader response:
Done
646XX Set IAG RF Attenuation
Command #646XX sets the IAG attenuation control for the output RF power where
XX is a hexidecimal value from 00 to 0F. Setting 00 (0 dB) is the maximum power
setting and 0F (15 dB) is the minimum power setting. The default attenuation value is
04.
647XXX Select RF Operating Frequency
Command #647XXX sets the reader RF from 860 to 930 MHz in 250-kHz steps,
where XXX is a hexadecimal value from 000 to 118. After the reader’s frequency is
set, the value is stored in non-volatile RAM (NVRAM). This value is not altered by
power-down.
If the NVRAM becomes corrupted, the correct operating frequency cannot be guaran-
teed. In this circumstance, the RF section shuts down and the reader sends an
Error06 message to the host. Until the frequency is reset using command #647XXX,
the unit displays the same error message every time it is powered up or if an attempt is
made to enable the RF by host or by external sensor.
The commands to set the RF operating frequency are presented in Table 7-16.
Table 7-16 Select RF Operating Frequency Commands
Command RF Frequency (MHz)
647000 860.00
. .
. .
.
6470CF 911.75
6470D0 912.00
6470D1 912.25
6470D2 912.50
6470D3 912.75
6470D4 913.00
. .
. .
To Next Page
Loading...
