User Manual
Scorpion I IIIAR Reader
8
Copyright 2001
RF Code, Inc.
4.4 Scorpion I Reader Environmental Limits
Operating Temperature
-20 + 60
°
C
Storage Temperature
-40 + 75
°
C
Operating humidity
<95% Non-condensing at 50
°
C
Storage humidity
<98% Non-condensing at 50
°
C
The Scorpion I Reader enclosure is designed to meet the requirements of
NEMA 12 indoor installation standards.
4.5 Scorpion I Reader Mounting
This reader mounting discussion defines the reader antenna’s mounting
locations. If the antennas are mounted on the reader, then these installation
instructions apply to the reader with the antennas installed on the reader.
As a general rule, the higher the antenna is positioned above the ground or
floor, the better the reader’s detection range. Detached antennas with low
loss SMA coaxial extension cables connected to the reader may be used to
separate the reader from the antennas.
To minimize RF interference, maintain a four to six foot separation between
the Scorpion I Reader antennas and potential RF radiators such as
computers, monitors, printers and electronic office equipment. The local radio
environment can limit the reader’s effective range. Grounded and reflective
metallic structures around the reader’s antennas and/or tags affects the
system’s performance.
As a general rule, the reader’s antennas should be mounted as high as
reasonably possible. However, mounting the antennas on the ceiling that is
also the floor of the story above may be detrimental because the antennas are
located near a “grounded floor”. The difference is, the floor is now above the
reader instead of below the reader. It may be necessary to experiment to find
the optimum position for placing the reader’s antennas.
Figure 4 shows the chassis mounting tabs on the Scorpion I Reader. The
dimensions are in inches.