APPENDIX A: 958 system technical specifications

TABLE 17: 2701 technical specifications

Physical features

Interfacing

Dimensions: 2.0” high x 4.68” wide x 8.9” deep

Primary power: 10 to 40 VDC (12V and 24V

Weight: 2 pounds

systems). 10 watts typical.

 

RS-232, GPS, and beacon receiver comm ports

Performance

Environmental

Velocity: 1852 km/h (514 m/sec) max.

Operating temperature:

Acceleration: 4 Gs (39.2 m/sec2, Jerk: 2 m/sec3

Receiver: 0 degrees C to +50 degrees C.

Position accuracy: < 1 m circular error probability

Antenna/preamp: -40 degrees C to +50 degrees C.

(CEP), DGPS; < 2 m circular error probability (CEP),

 

WAAS.

 

Time-to-first-fix (TTFF): Hot start - 20 seconds typical,

 

with current almanac, position, time, and ephemeris.

 

Warm start - 45 seconds typical, with current

 

almanac, position, time, and ephemeris. Cold start - 2

 

minutes typical, no almanac, position, and time. With

 

WAAS acquisition, add 30 seconds typical (max. 1

 

minute)

 

Re-acquisition time: < 1 second typical to re-acquire

 

(5-second obscuration); 3 seconds typical to

 

re-acquire (60-minute obscuration).

 

Channels allocation: 10 GPS channels plus two

 

WAAS satellites.

 

958 Installation Manual, Rev. A1

Page 45

Page 49
Image 49
NorthStar Navigation 800/628-4487, 978/897-6600 installation manual technical specifications, Waas

978/897-6600, 800/628-4487 specifications

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