User's Manual
Table Of Contents
- 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
4-3
Chapter 4
Lane Tuning Guidelines
This chapter explains the importance of lane tuning for optimum
automatic vehicle identification (AVI) system performance and describes
the MPI 6000 functions and features that can assist you in tuning an AVI
lane.
Why You Need to Tune a Lane
Lane tuning is the procedure by which an installer can optimize the radio frequency
(RF) characteristics and the signal timing of an AVI-equipped toll lane for the perfor-
mance dictated by the lane’s traffic requirements. Typically,
consideration of these
factors is necessary for each individual lane, although in some installations it may be
possible to identify broader solutions, then apply these solutions to certain classes of
lanes having similar characteristics, followed by additional fine tuning on an individ-
ual lane-by-lane basis. This process is necessitated by the radio link, which is subject
to varying factors such as lane ty
pe, the geometry of fixed objects near the capture
zone, interference from external sources, adjacent lane interference, natural non-
homogeneity of RF field strength within the ideal capture zone, and varying tag envi-
ronments. These factors may vary widely within an installation and from lane to lane
within the same plaza.
Furthermore, the type of technologies involved, either IT2200,
American Trucking Association (ATA), eGo, eGo Plus, Title 21 or Inter-Agency
Group (IAG), will play a significant role in tuning the lanes for operation. Knowing
the appropriate factors and available tools is necessary for the set-up and troubleshoot-
ing of AVI lanes.
Required Equipment
You will need the following equipment and tools when you tune a lane:
TBD
Lane Tuning Parameters
Lane tuning parameters can be altered to effect required outcomes. This section lists
the properties that can be used to tune a lane.
Traffic Requirements
The traffic requirements of lane tuning include the following characteristics:
• The duration of the tag transaction, also known as handshake
PRELIMINARY