NorthStar Navigation 978/897-6600 Marine GPS System User Manual


 
APPENDIX A: 958 system technical specifications
Page 44 958 Installation Manual, Rev. A1
TABLE 16: 2201/2301 technical specifications
Physical features Interfacing
Self-contained 12-channel L1 GPS/WAAS pod
antenna-receiver.
Dimensions: 4.5" (114mm) diameter x 3.79" (96mm)
high.
Weight: 1.2 lb. maximum excluding cable (0.55 kg).
Cable (normal installation): 22 Ga conductors
foil-shielded cable, environmentally sealed (50-foot
cable supplied).
Mounting: 1-14 UNS threads x 1" deep for mast
mounting, and 3 x 10-32 UNF screws for deck
mounting (2201-only).
Connector receptacle with 7 male contacts. Mating:
Switchcraft EN3C7FC or equivalent.
Prime power:10 to 36 VDC (12V and 24V system).
2.4 watts typical at 12V. Reverse polarity protected
and load dump protected.
Input messages:Auxiliary (RTCM SC104) messages
1, 3, 9. Output messages: NMEA GGA, GSA, GSV,
RMC, VTG, ZDA, GLL.
Serial communications: RS-232 asynchronous data
port, Main port IN/OUT plus AUX input; 19,200 baud
standard (both ports user-selectable from 300 to
19,200 baud). Default baud rate = 9600.
Performance Environmental
Acceleration: 4 Gs (39.2 m/s
2
), Jerk: 2 m/s
3
Operating temperature: -30 to +75°C (standard).
Velocity: 1852 km/h (514 m/s) max. Storage temperature: -55 to +90°C.
Position accuracy: <3 m 2dRMS. Humidity: SAE J1455/4.2 Procedure I/II.
Time-to-first-fix (TTFF): Hot start - 20 seconds typical,
with current almanac. Warm start - 45 seconds
typical, with current almanac. Cold start - 2 minutes
typical, with no almanac.
Waterproof: Fully sealed unit. Meets MIL-STD 810E
method 512.3 (equivalent to 6-foot, 30-minutes
submersion).
Shock: MIL-STD 810E Method 506.4, Procedure I,
IV.
Re-acquisition time: <1 second typical to re-acquire
(five-second obscuration). 3 seconds typical to
re-acquire (60-minute obscuration).
Vibration: MIL-STD 810E Method 514.4 Category 8.
Salt spray: MIL-STD 810E Method 509.3 (48 hours).
Sand and dust: MIL-STD 810E Method 510.3.
Channel allocation: 10 GPS channels plus two WAAS
satellites.
Coarse acquisition: C/A code (1.023 MHz chip rate),
code and carrier phase tracking.
Sensitivity: -135 dBm (antenna input level).
ESD: IEC 1000-4-2 level 2 (-8 kV to +8 kV).
EMI: FCC Class B, European CE, 89/EEC EN55022
class B, EN50082-1.
Ultraviolet light protection: ASTM G53-88.