Specifications

LR-2000 Manual V1.4 Page 14 of 20
10.2 ENVIRONMENT
• Physical obstructions: The space where the reader will be mounted and aimed must be clear.
• Weather: Provide shielding from direct rainfall (especially for LR-2000HiLoMA) and bright sunlight (especially if the reader
is armed continually – yellow and black wires connected together permanently).
• RFI: Avoid sources of radio frequency emission that might interfere with the reader.
10.3 LANE LAYOUT
• Lane geometry: The lane should be straight for about a vehicle length where the reader reads the tag. Avoid sharp turns
from through streets into short driveways.
• Multiple lanes: Locate and aim readers so that they do not interfere with each other. For readers in parallel lanes,
pointed in the same direction, minimum centerline distance between the lanes is 12 feet.
• Reader location: If readers are above the lanes, aim neighboring readers parallel to each other. If readers are on posts
beside the lanes, aim the readers so that one reader is not aimed directly at the back of the neighboring reader.
• Eliminating cross-reader interference: If readers must be close to each other so that their effective RF fields overlap, use the
LR-2000HiLoMA reader set. This set of 2 units transmits RF alternatively, so that only one unit is active at any time.
10.4 VEHICLE TYPES
• All passenger car types: A single LR-2000 reader usually works for sport cars, sedans, SUVs and pickups, unless tags are
in diverse locations on the vehicles.
• Mixed small and large vehicles: The LR-2000HiLoMA reader set is available when cards and tags are spaced apart on vehicles
of different sizes.
• See Section 9 for details on reader selection for mixtures of vehicle types and sizes, and on reader location.
10.5 VEHICLE MOTION – IDEAL CONDITIONS
• Vehicle in motion while the tag is read at the “sweet spot”.
• Vehicle moving in a straight line while the tag is read.
• Vehicle close to the reader location.
• Vehicle’s tag about parallel to the reader’s front face when the tag is at the sweet spot.
• Vehicle speed around 5 miles per hour for safety. (OK to experiment with higher speed.)
10.6 VEHICLE MOTION -- CONTROLS
• To enforce the vehicle speed – use signs, speed bumps, traffic signals (red/green lights), gates, instructions for drivers, .
• To enforce the vehicle path – use signs, painted stripes, cones, bollards, barriers, instructions for drivers.
10.7 READER TYPE
• Typical case: Most applications are served well by a single LR-2000 for each vehicle lane.
• Diverse vehicle sizes: For a combination of large and small vehicles in a lane, use LR-2000HiLoMA mounted over-under
on the same post, for example. The “over” position may be for tags and cards in passenger cars. The “under” position may be
for tags and cards on the side of buses and large trucks.
• Turning lanes: To increase the horizontal spread in a tight turn, use LR-2000HiLoMA mounted side-by-side. Aim the reader
and remote antenna somewhat apart. Test for continuity of field using the LR-2000KIT Test & Set-up Kit.
10.8 READER POSITION
• Above the lane or beside it? – Either position works. If the reader is above the lane, the reader must be no higher than is required
for vehicle clearance – typically less than 10 feet above the lane, unless the tags are all high on the vehicles. If the reader
is beside the lane, the height and aiming depend on the type and location of tags on the vehicles.
• Which side? – Either right or left side works. Left side (driver’s side) is better, because the driver finds it easier to align the
vehicle with the left side of the lane, and with the reader if it is on the driver’s side. (This applies to right-lane-driving countries.)