Honeywell International Inc. IM11PRT Manuale Utente
IM11 RFID Reader Module Integration Guide (Confidential)
27
RF Integration
The module supports two antenna connections. You can use software
to control the selection of either connection. The module switches
from one antenna to the other in 5 ms or less. The switching time is
defined from the 90% power point as the RF is turned off at the first
port to the 90% power point as the RF is turned on at the second port.
to control the selection of either connection. The module switches
from one antenna to the other in 5 ms or less. The switching time is
defined from the 90% power point as the RF is turned off at the first
port to the 90% power point as the RF is turned on at the second port.
The module uses an integrated RFID transceiver. It features
autotuning on the antenna ports to match the antenna return loss
dynamically. The system compensates for antennas with a VSWR of
2.0 or lower (a VSWR of <1.7 is optimum).
autotuning on the antenna ports to match the antenna return loss
dynamically. The system compensates for antennas with a VSWR of
2.0 or lower (a VSWR of <1.7 is optimum).
There are no termination requirements for the antenna ports. The
module will not transmit to any open antenna ports.
module will not transmit to any open antenna ports.
Software Integration
In Serial mode, the module appears as a standard PC COM port. It has
eight general purpose inputs and outputs. You can use a
communications program, such as HyperTerminal, to communicate
with the module using the Basic Reader Interface (BRI). For more
information, see the
eight general purpose inputs and outputs. You can use a
communications program, such as HyperTerminal, to communicate
with the module using the Basic Reader Interface (BRI). For more
information, see the
.
BRI Command Default Values
Command
Default Value
ANTS
1
ANTTIMEOUT
50
ANTTRIES
3
BROADCASTSYNC
0
CHKSUM
OFF
DENSEREADERMODE
ON
ECHO
OFF
EPCC1G2PARAMETERS
16
FIELDSEP
ASCII space character (0x20)
FIELDSTRENGTH
30dB, 30dB
IDREPORT
OFF