名　　称： DGPS 212/212W
详细说明：
DGPS 212/212W

Internal WAAS receiver
(DGPS 212W)
 The DGPS212W includes a WAAS receiver. By Using WAAS you can achieve precise position.
 
 Internal Differential Beacon Receiver
 The DGPS 212 includes a Beacon Receiver and a GPS Receiver.
By using DGPS you can achieve true DGPS accuracy.
 
 12-Channel Parallel for Receiving 12 Satellites Simultaneously
 The DGPA 212 is designed to simultaneously receive from 12 orbiting satellites, ensuring the most accurate positioning.
 Quick Position Fixing
 Typically 45 seconds for first position fixing without GPS almanac data.
 
 Conversion to NMEA183 Output
 Since the NMEA0183 output data is changeable between version 1.5 and version 2.1 you can connect the DGPS 212 to various Marine Electronics Equipment such as Marine Radars, Fishfinders, Plotters, or others.
 
PPS Signal Output
 The DGPS 212 outputs a pulse per second which coincides with UTC second precisely. It can be used as a precise clock.
 
SPECIFICATIONS
 
GPS Specifications
Receiver type Multichannel (12-CH) all-in-view
Frequency 1575.42MHz ± 1MHz (C/A code)
Sensitivity -130dBm for acquisition, -133dBm for tracking
Accuracy 15m 2DRMS (C/A code, HDOP < 4)
5m 2DRMS when DGPS corrected
7m 2DRMS when WAAS corrected
Time to first fix Typically 45 seconds (cold start fix)
Typically 30 seconds (warm start fix)
Position update Normally every 1 second
WAAS Specifications (DGPS 212W)
Receiver type Single channel
Frequency 1575.42MHz ± 1MHz 
Sensitivity -130dBm for acquisition, -133dBm for tracking
Services Differential : Yes
Ranging : Yes
integrity : No
Beacon Specifications
Receiving frequency 283.5kHz to 325kHz
Dynamic range More than 9dB
Demodulation MSK (Minimum Shift Keying)
Data bit rate 50, 100, 200bps
General
Data output NMEA0183 ver 1.5 or 2.1 selectable
  ver1.5 GGA, RMC, GLL,VTG, PJRCDGP0, PJRCDGP1, PJRCDGP2
  ver2.1 GGA, RMC, GLL, VTG, GSV, GSA, PJRCDGP3, DTM, MSS,
              PJRCDGP0, PJRCDGP8, 
PPS signal output positive pulse, 15usec width, 5V Once a second at straight up
Geodetic datum 46 (WGS-84, WGS-72, Japan, America, Canada/Alask, Europe, Australia, England, NAD-83, other 37 selectable)
Input voltage
(Power Consumption) 10.8 - 16VDC (less than 5W)
Data cable 6-core cable, 15m
Operating temperature -25deg C to 55deg C
Water proof USCG CFR-46/IEC60945
 
 COMPNENTS 
 
Name Type Q'ty Remarks
DGPS Receiver JLR-4331E 1 include 15m cable
Instruction manual   1  
 
Option  15m Extension Cable CFQ-8773