Garmin GPS 18x 010-00321-37 Manuale Utente

190-00879-08 

GPS 18x Technical Specifications  

Rev. B 

Page 6 

•  Operating Temperature:  -30°C to +80°C (-22°F to +176°F) 
•  Storage Temperature: 

-40°C to +90°C (-40°F to +194°F) 

 Enabled

®

 GPS receiver continuously tracks and uses multiple satellites to compute and update your position. 

•  Reacquisition:  Less than 2 seconds 
•  Hot: 

 

Approx. 1 second (all data known) 

•  Warm:   

Approx. 38 seconds (initial position, time, and almanac known; ephemeris unknown) 

•  Cold:  

Approx. 

45 

seconds 

•  GPS 18x USB, PC, and LVC:  

1 record per second  

•  GPS 18x-5Hz:    

 

5 records per second 

•  GPS Standard Positioning Service (SPS) 

Position:  

< 15 meters, 95% typical  

Velocity:  

0.1 knot RMS steady state 

•  WAAS 

Position:  

< 3 meters, 95% typical 

Velocity:  

0.1 knot RMS steady state 

•  Measurement Pulse Output Time: ±1 microsecond at rising edge of the pulse 
•  Dynamics: 999 knots velocity (only limited at altitude greater than 60,000 feet), 2g dynamics 

•  GPS 18x USB:  USB 2.0 full-speed protocol compatible, as well as USB 1.1 full-speed protocol. 
•  GPS 18x PC and LVC: TIA-232-F (RS-232) compatible asynchronous receiver. Default setting is 4800 

baud.  

•  GPS 18x-5Hz:  TIA-232-F (RS-232) compatible asynchronous receiver. Default setting is 19200 baud.  

1.6.4.2  Garmin Interface and Garmin USB Protocol 
Refer to the Garmin Device Interface Specification found in the Garmin Device Interface SDK for information 
about the Garmin Interface and the Garmin USB Protocol. At the time of this printing, this document is located on 
the Garmin Web site at: 

www.garmin.com/support/commProtocol.html.

 

 for additional information concerning access to binary data from 

the GPS 18x USB.