Odetics
Telecom
GPStar
plus
Model 365
365-8006
Specifications 2 - 1
Section 2
Specifications
2.1
GENERAL
The unit is designed for reliable and maintenance free operation. All connectors are
located on the rear panel of the unit for ease of accessibility.
The unit consists of a chassis that can be mounted in a 19-inch equipment cabinet with
the supplied removable mounting handles. The standard unit is cooled through
convection and conduction. In units configured with the Rubidium oscillator option, an
internal cooling fan is used.
2.2
OPERATING DETAILS
2.2.1
Operating Mode Definitions
2.2.1.1
Warm Up
When power is applied, the unit enters a 10-minute warm-up period. During this period
the internal oscillator is allowed to stabilize. If the internal GPS receiver is operating in
Warm Start
and has locked-on GPS time, the oscillator disciplining starts immediately
after the warm-up period. If the internal GPS receiver is operating in
Cold Start,
the
disciplining starts after the receiver has collected a new almanac from the GPS
satellites and has locked-on GPS time.
2.2.1.2
Cold Start
In the
Cold Start
mode the internal GPS receiver collects a new Almanac from the GPS
satellites. If the user has not entered the antenna position, the receiver automatically
determines the position. The major time (days through seconds) is not valid until
sufficient data has been collected and the receiver has locked to the GPS time.
2.2.1.3
Warm Start
The
Warm Start
mode is active when the unit has its power applied after the internal
receiver collected and saved the satellite Almanac data during prior operation.
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