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GPS-90D/GPS-90D
GPS and Differential GPS/Track Plotters

Full keypad entry- at an entry-level price!

Compare the GPS-90D Models most wanted features like graphic navigation pages, track plotter, large display and a full keypad for quick, easy selection of all functions. Choose from the GPS-90D with built-in differential beacon receiver or GPS-90 without differential receiver.

• Competitive models offer only arrow keys to input data.  Requiring up to 77 key touches to input a single waypoint.  With the GPS-90D and GPS-90, waypoint entry is quick, no tedious scrolling is required.
• Large, easy-to-read backlit LCD display and backlit softkey controls allow instant mode selection.
• Graphic and digital compass displays for heading and bearing information. 
• Electronic Fairway display shows vessel's rhumbline course, cross-track error, and progress to desired waypoint.
• North up, X-Y axis plotter shows history of the vessel's track on a wide selection of ranges from 150 feet to 20 NM to help you accurately retrace previous trips.  2000 plotting points available.
• Advanced continuous tracking "MaxView" receiver processes data from up to 11 GPS satellites for accurate position updates every second.
• Differential beacon receiver offers repeatable accuracy to 2-10 meters.
• Mobile cursor on the plotter display pinpoints position information of navigation landmarks.
• Transfer your favorite Loran fishing hotspots with the built-in automatic Lat/Lon to LOP Conversion Program.
• 400 nameable waypoints and every-memory storage let you keep track of all your favorite fishing and cruising spots.
• "Quick" waypoint feature allows for immediate position entry without assigning a permanent memory.
• MOB (man-overboard) display stores precise position in Lat/Lon and provides a graphic visual perspective of emergency situations plus continuous updates of range and bearing.
• NMEA 0183 data port allows simple connection to charting systems, autopilots, radars and depth sounder.  A wide array of selectable output sentence information insures compatibility with most other devices.
• Rugged, weatherproof construction to withstand the harsh marine environment.
• Also available with "H" field DGPS antenna, as the GPS-90DH. This eliminates the need for a whip antenna.

SI-TEX GPS-90D & GPS-90 SPECIFICATIONS

GPS RECEIVER

Receiving Frequency

1575.42 MHz + 1MHz

Receiving Channel

Parallel "MaxView" tracks 11 satellites

Receiving Code

Receiving Code

Sensitivity

Better than –130dBm (elevation angle: 5 or over)

Tracking Speed

200 knots maximum

Accuracy (at HDOP 3 or less by C/A code)

Position:  2 to 10 meters RMS*(DGPS On), 15 meters  (with DGPS Off)
Velocity:  0.1 knot RMS (DGPS On)

DGPS RECEIVER

Receiving Frequency

283.5 to 325.0 kHz

Channel Separation

500 Hz step

Modulation

MSK: 50, 100, 200 bit/second

Sensitivity

2.5 ¥V/m

Signal Detection (S/N)

Better than 6 dB

Dynamic Range

92 dB

GPS/DGPS DISPLAY

Display

LCD backlit by electroluminescent cell (128 x 64 pixels)

Display Modes

NAV1, NAV2, NAV3, PLOT, MOB, MENU

Track Display

Display Range: 0.025, 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, 20 nm (sm, km)

Usable Ground:

Within 80 in latitude

Plotting Interval:

10, 20, 30 seconds, 1, 3, 5 minutes, 0.1, 0.5 nm (sm, km)

Plotting Capacity:

2000 points

Position Data Display

Latitude/longitude in increments of 1/1000 minute, converted Loran C LOP, Loran A LOP or Decca LOP

Navigation Displays

Speed, course, velocity made good/course made good/elapsed time, altitude, distance/bearing/cross-track error/CDI/time to go to waypoint, total time to go and distance on route, DOP value, present time (UTC or LTC), satellite status, beacon receiving status, distance/bearing between two points, MOB display

Waypoint/Event Memory

A total of 400 waypoints with alphanumeric identifiers

Route Memory

20 routes of 20 waypoints each (reversible)

Position Update

Every second

Alarms

Position Compensation Latitude/Longitude, Loran C LOP, Loran A LOP, Decca LOP or Datum

Magnetic Compensation

Auto or manual

Parameters

Loran C LOP/Loran A LOP/Decca LOP conversion, memory of waypoints and name (up to 10 letters), selection of measuring unit (nm, km, sm), antenna height, averaging (smoothing) factor, positioning mode (2D or 3D automatic selection), selection and registration of beacon station

Input Data Format

NMEA 0183, NMEA 0183, RTCM SC-104

Output Data Format

NMEA 0183, (AAM, APB, BOD, BWC, DCN,  GGA, GLC, GLL, GSA, GSV, GTD, MSS, ODA, RMB, RMC, RNN, SGR, SNU, VTG, WDC, WPL, XTE and ZDA), NMEA1, NMEA2, CIF, SHIPMATE 0183 (GPS-90: NMEA-0183 Only)

Memory Protection

Memory Protection

Power Requirements

11  40V DC, less than 5W

Operating Temperature Display Unit:

5 to 131 F (-15 to +55 C)

Antenna Unit:

-22 to 131 F (-25 to +55 C)

Case Dimensions

7.5"W x 4.75"H x 2.7"D

Case Weight

2.1 lbs. (GPS-90D), 1.9 lbs. (GPS-90)

Antenna Weight (GPS)

.4 lb.

Antenna Coupler Weight (DGPS)

0.9 lb.

Optional "H" Filed Antenna Weight

2.7 lbs.

DGPS DISPLAY

Differential

On, Off, Auto

Beacon Station Selection

Auto (requires position information) or manual

Beacon Station Selection

User entry (20 stations), beacon almanac data (10 stations), ROM (built-in stations around the world)

Operating Temperature Antenna Coupler:

-22 to 131 F (25 to +55 C)

© Copyright 2007, SI-TEX