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
Health Limits for Encompass
®
Multiprotocol Reader
Using External Antenna (902 to 921.5 MHz)
Within the United States, environmental guidelines regulating safe exposure levels are issued by the Occu-
pational Safety and Health Administration (OSHA).
Section 1910.97 of OSHA Safety and Health Standards 2206 legislates a maximum safe exposure limit of
10 milliwatts per square centimeter (mW/cm
2
) averaged over 6 minutes at 902 MHz.
Although not binding, other organizations such as the American National Standards Institute (ANSI) have
issued similar guidelines that are more restrictive than the OSHA limits (ANSI C95.1). ANSI guidelines
recommend a maximum safe power density in mW/cm
2
of:
Frequency
(in MHz)
1500
Thus, the maximum permissible exposure for general population/uncontrolled exposure at 902 MHz is
0.60 mW/cm
2
. The average time is thirty minutes.
The maximum permissible exposure for occupational/controlled exposures is 3.0 mW/cm
2
. The average
time is six minutes.
The RF power density generated by the Encompass Multiprotocol Reader was calculated using a maxi-
mum antenna gain of 14.0 dBi, equivalent to the antenna gain of the external AA3152 Universal Toll
Antenna (UTA).
Warning
At 2 W transmitted power, 0 dB transmit attenuation, and a distance of 33 inches (82 cm) from the
antenna, the maximum power density calculated was less than 0.60 mW/cm
2
. Install the antenna at least
33 inches (82 cm) from the general public. Maintenance personnel must remain at least 15 inches
(37 cm) from the antenna when the system is operating.
The data confirms that when the UTA, or equivalent antenna, is used with the TransCore Encompass
Multiprotocol Reader, the antenna effectively meets OSHA requirements and thus does not represent an
operating hazard to either the general public or maintenance personnel.
PRELIMINARY