TransCore MPRX, System Manual

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User Guide
TransCore Proprietary 7–28
Reader response:
Done
645NN Set SeGo Protocol Operating Range (Distance)
Command
#645NN
sets the read range for SeGo protocol tags where NN is a hexadecimal
value from 00 to 1F; the range increases with increasing NN value. The 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
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 NVRAM. This value is not altered by power-down.
If the NVRAM becomes corrupted, the correct operating frequency cannot be guaranteed. 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 each time it is powered up or if an
attempt is made to enable the RF by host or by external sensor.
Note: The authorized continuous wave (CW) frequency band for the MPRX in the U.S.
is 902.25 to 903.75 MHz and 910.00 to 921.50 MHz and the authorized modulated
frequency band for the MPRX in the U.S. is 911.75 to 919.75 MHz. The RF for each MPRX
at the site must be set according to the frequency specified in the FCC site license. Only
trained, authorized installation and maintenance personnel are permitted by FCC to set
the RF.
The commands to set the RF frequency are presented in Table 7 – 11 .