User Manual
Scorpion I IIIAR Reader
6
Copyright 2001
RF Code, Inc.
commands to the embedded Scorpion I Reader in the chassis. Instructions for
the Scorpion I Reader’s operation using RF Code’s Concentrator LI are found
in the Concentrator LI user’s guide; RF Code publication number 03801400-
11.
To implement a feature required in the Scorpion I’s operation, the reader is
supplied with an empty battery holder. Batteries are not used in the Scorpion I
application.
Do not install batteries in the battery holder.
Caution
:
By installing batteries, the reader will lose a functional
feature and could possibly create a physical hazard to the user.
The
Power Supply printed circuit board
provides power to the Scorpion I
Reader and the Client Bridge inside the enclosure. The power supply PCB
receives its power from the external power connector and will operate with 10
to 18 volts, either AC or DC input.
The power supply PCB also provides a communication watchdog between the
Scorpion I Reader and the Client Bridge. The watchdog monitors the
communication handshake lines between the two devices. If there is no
communications activity from either the Client Bridge or the Scorpion I Reader
for the period of time selected by the P2 jumper, the watchdog power cycles
(momentarily turns off the power) to both devices at the same time. Power
cycling restarts both units in their default startup configuration, which permits
them to resume normal communications.
The inactivity watch time is set with a Jumper on P2 termination strip. The
inactivity watch time can be set as short as three minutes (3M), and as long as
twelve hours (12H), with six intermediate steps between these extremes. The
watchdog times are approximate and not intended for exact timing. The
factory setting is three minutes and can be changed by removing the selection
jumper from the three-minute (3M) P2 terminals and placing it on the desired
P2 terminals. Note: do not operate the reader with the jumper removed; the
watchdog requires a valid jumper position to operate correctly.
The
Ethernet Client Bridge
can be operated using the wireless 802.11b
Ethernet link or the wired RJ-45 connection. If wired Ethernet is to be used,
remove the wireless PCMCIA card from the Client Bridge while the unit’s
power is turned off. Connect the Ethernet access RJ-45 cable into the reader.