User's Manual
Table Of Contents
- About This Manual
- System Description
- Mobile Equipment System
- Repeater System
- Base Station
- System Installation and Checkout
- User Interface
- Acronyms
- Radio Module Specifications
- General Description
- Functional Specifications
- FCC Items
- Channel Definitions
- Power and Distance
- Photographs
- DSSS Channels and Regulations
- EL Antenna Pattern
- AZ Antenna Pattern
Spread Spectrum Radio System User’s Manual 7
March 2001
The five status lights on top of the Hub convey important information
to the user. The purpose of each is listed in the following table:
Mobile Equipment
Options
The options available with each mobile equipment system include the
following:
• The Hub power system can be either 12 or 24 V dc.
• External multi-protocol CAN-based GSPs can be added to
support more than the two third-party serial devices that the
internal GSP on the Hub processor board satisfies.
• Future enhancements include an external unit that can provide
an analog/digital interface to third-party monitoring equipment
such as oil pressure systems.
Repeater System Several repeater units are required to provide coverage in the work
area. The actual quantity is determined by the user and largely based
on MMS-conducted site surveys. The desired level of redundancy also
impacts the quantity used.
Each repeater unit consists of the following standard components:
• an environmental enclosure containing a Hub with a 1-W,
DSSS, 2.4-GHz radio
• an omnidirectional antenna with a 12-, 18-, or 24-foot mast
• a lightning diverter
Optionally, the user may select
• a steel mounting base
• a wheel option
Table 3 Equipment Hub Status Indicators
Status Light Indication
PWR Hub is receiving power from source.
GPS Link with GPS is operating.
RADIO A Link with radio A is operating.
RADIO B Link with radio B is operating.
COMM Link with mine network is operating.