User's Manual

Technical Information
©Airmar Technology Corporation ST850_Smart_rF 02/03/10
As Airmar constantly improves its products, all specifications are subject to change without
notice. All Airmar products are designed to provide high levels of accuracy and reliability,
however they should only be used as aids to navigation and not as a replacement for
traditional navigation aids and techniques. Other company or product names mentioned in
this document may be trademarks or registered trademarks of their respective companies,
which are not affiliated with Airmar.
ST800, ST850
DIMENSIONSSPECIFICATIONS
Weight:
—0.7 kg (1.4 lb)—Plastic
—1.3 kg (2.8 lb)—Bronze
—1.6 kg (3.5 lb)—Stainless Steel
Speed Range: 2 knots to 45 knots (2 MPH to 52 MPH)
Acoustic Window: Urethane
Hull Deadrise: Up to 22°
Data Update Rate: 1 per second
Pressure Rating: 3 m (10’)
Pulse Rate: 17,000 p/nm* (4.8 Hz per knot)—*p/nm = pulses per nautical mile
Supply Voltage: 9 VDC to 16 VDC
Supply Current: <200 mA
Standard Cable Length: 6 m (20’) NMEA 2000 cable, 9 m (30’) Analog
Temperature Sensor Accuracy: ±0.5°C (±1.8°F)
Temperature Sensor Range: -10°C to 40°C (14°F to 104°F)
NMEA 2000
®
Load Equivalency Number (LEN): 2
CE Regulation: Complies to IERC60945
DATA OUTPUT PROTOCOL
Analog Paddlewheel Format
OR
NMEA 2000
®
Supported PGNs
59392 ......... ISO Acknowledgement
600928 ....... ISO Address Claim
126208 ....... Acknowledge Group Function
126464 ....... Transmit PGN List Group Function
126464 ....... Received PGN List Group Function
126996 ....... Product Information
128259 ....... Speed (Speed Water Reference)
128275 ....... Distance Log
130310 ....... Environmental Parameters (Water Temperature)
130311 ....... Environmental Parameters (Water Temperature)
130312 ....... Environmental Parameters (Water Temperature)
ø 75 mm
(2.94”)
89 mm
(3.49”)
ø 51 mm
(2.00”)
2-12”
threads
30 mm
(1.19”)
Bronze and
Stainless Steel
ø 75 mm (2.94”)
ST850
P17 Plastic, B17 Bronze, and SS577 Stainless Steel
ST800
P120 Plastic, B120 Bronze
ø 75 mm
(2.94”)
ø 75 mm
(2.94”)
125 mm
(4.92”)
5 mm
(0.20”)
2-12”
threads
Plastic
Bronze and
Stainless Steel
5 mm
(0.20”)
Plastic