TransCore encompass 4, Руководство пользователя

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Encompass 4 Reader System Guide
TransCore Proprietary.
7–120
Table 32 RF Frequency Commands
Command RF Frequency (MHz)
Approved for
Use in the U.S.
(ATA only)
Approved for
Use in the U.S.
(modulated)
6422C 924 No No
6422D 924.5 No No
6422E 925 No No
6422F 925.5 No No
64230 926 No No
64231 926.5 No No
64232 927 No No
64233 927.5 No No
64234 928 No No
Reader response:
Done
643NN Select ATA Operating Range (Distance)
Command
#643NN
selects the read range for ATA 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
644NN Set RF Attenuation
Command #644NN sets the attenuation control for the output RF power where NN is a hexadecimal value
from 00 to 0A. Settings for attenuation are 1.0 dB increments over a range of 10dB of attenuation from
the maximum power setting of two watts at 0dB attenuation to a minimum power level of 200 milliwatts at
10dB attenuation.
The Set RF Attenuation command NN variables and corresponding attenuation settings are shown in
Table 33.