User's Manual
Table Of Contents
- Health Limits
- Contents
- Before You Begin
- Developing the Installation Site Plan
- Installing and Configuring the MPI 6000
- Lane Tuning Guidelines
- Optimizing MPI 6000 Reader System Performance
- General Software Information
- Configuration Commands and Responses
- Configuring the MPI 6000
- Required Commands to Set Up MPI 6000 Reader
- System Interface Command Group Commands
- System Identify
- Set Communications Baud Rate
- Get Communications Baud Rate
- Set Time and Date
- Get Time and Date
- Firmware Download
- Reset Reader
- Get Stored Tag Response Message
- Get Number of Stored Tag Response Messages
- Delete All Stored Tag Response Messages
- Get System Startup Status
- Get Lane Controller Interface Status
- Get System Interface Status
- Get DigBrd Hdwr Remote Inventory
- Get DigBrd CPU Boot Fmwr Remote Inventory
- Get DigBrd CPU Appl Fmwr Remote Inventory
- Get DigBrd FPGA UDP/IP Core Fmwr Remote Inventory
- Get UDP/IP Core Lane Controller Parameters
- Set UDP/IP Core IP Address
- Get UDP/IP Core IP Address
- Get UDP/IP Core Port Number
- Configuring the MPI 6000
- Tag Command Processing
- System Diagnostics and Preventive Maintenance
- Acronyms and Glossary
- Block Diagrams
- System Technical Specifications
- Hardware Interfaces
Lane Tuning Guidelines
4-9
Figure 4-3 Upper Center Interior Windshield Tag Placement
Figure 4-4 Correct Exterior Tag Placement
Antenna Uptilt Angle
Adjusting the antenna uptilt angle directly affects the footprint and the point of first
tag read (
Figure 4-5). As expected, a greater uptilt angle will move the point of first
tag read farther from the antenna. However, at some uptilt angle, a point of diminish-
ing return is reached where the RF power is too dispersed to activate the tag at the
start of the footprint. Increasing the antenna angle beyond this point will not move the
first read point farther out and may actually decrease the RF margin within the cap
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ture zone. Also, increasing the angle may produce an area near the start of the capture
zone with spotty reads. The most commonly used range for antenna uptilt angles is
from 10 to 25 degrees with the lower angles producing the sharpest, most clearly
defined read zones. Setting the antenna uptilt angle below 10 degrees may cause
problems in reading tags mounted on windshields that are nearly vertical and in read
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