No longer availble.
It is the availability of host-based operation that makes
DGPS-220-PC different from its predecessor
DGPS-220, which features automatic search
for beacon stations. In addition to the automatic mode,
DGPS-220-PC now offers a manual mode, an
extra feature that allows users themselves to set up in their computing
devices the frequencies and baud rates for beacon stations. This feature is
designed mainly to provide users with enhanced flexibility in positioning
without scarifying accuracy. As part of effort to free manual-operating
users from the hassle of finding beacon stations available for their
locations,
DGPS-220-PC is shipped with a
list of beacon stations located worldwide. Essentially,
DGPS-220-PC is an integrated GPS/Beacon
receiver with built-in antennas, providing GPS differential corrections in
NMEA-0183 format for navigation requiring high degree of accuracy.
DGPS-220-PC is a combined high performance
GPS receiver and a differential beacon receiver in an extremely compact and
fully waterproof enclosure providing 1~5 meter DGPS positioning accuracy by
utilizing the broadcasted (283.5~325KHz) GPS differential corrections from
the USCG, CCG, or IALA Beacons at no charge. Both GPS and Beacon
receivers/antennas are built inside the enclosure, making
DGPS-220-PC a single device featuring easy
installation, maintenance and service.
Specification
|
GPS RECEIVER GENERAL |
|
SIGNAL PROCESSING |
| Antenna: |
High-reliability ceramic patch |
| Antenna LNA gain: |
26+/-2dBi, NF: 2.0dB max |
| Receiver Frequency: |
1575.42MHz, C/A code, L1 band |
| Receiver Architecture:
|
12-channel ail-in-view algorithm tracks & uses up to
12 satellites |
| Update Rate: |
1 second continuous |
| Dynamics: |
Up to 49m/s.s (tracking sustained) |
| Datum: |
WGS-84 plus 170 user selectable datum |
|
ACCURACY |
| GPS Positioning Accuracy: |
15m (2DRMS, L1, C/A code, HDOP<=4 without SA) |
| GPS Positioning Speed: |
0.1 Kt RMS |
| DGPS Positioning Accuracy: |
1~5m (2DRMS, L1, C/A code, HDOP<=4) |
| DGPS Positioning Speed: |
0.1 Kt RMS |
|
TIME TO FIRST FIX |
| Cold Start: |
90 seconds |
| Warm Start: |
20 seconds |
| Reacquisition: |
2 seconds |
|
BEACON RECEIVER GENERAL
|
|
SIGNAL PROCESSING |
| Frequency Range: |
283.5~325.0 kHz |
| Channel Spacing: |
500 Hz |
| Frequency Resolution: |
0.01 Hz |
| Minimum Signal Strength: |
< 5 uV/m @100bps |
| Dynamic Range: |
> 90 dB |
| Adjacent Channel Rejection: |
60 dB @1 kHz |
| Acquisition Time: |
 | < 2 sec., manual command
|
| < 2 sec., automatic warm start
|
| < 1 min., automatic cold start |
|
| Selection of Station: |
Automatic or manual |
| Signal Detection: |
Direct digital synthesis (DDS) |
|
DATA PROCESSING |
| Demodulation: |
MSK (Minimum Shift Keying) |
| Error Detection: |
Parity error check |
| MSK Bit Rates: |
50, 100, 200 (automatic) |
|
COMBINED RECEIVER
GENERAL |
|
DATA PORTS |
| Monitor/Control Port: |
RS-232 at 4800 baud |
| Control Format: |
NMEA-0183 |
| Housing: |
7 pin circular, hermetically sealed |
| Pins: |
Gold plated for anti-corrosion |
|
POWER REQUIREMENTS |
| Input Voltage: |
12~24V DC with power-reverse protection |
| Power Consumption: |
Less than 3W @12 V DC (max.) |
|
ENVIRONMENTAL |
| Operating Temperature: |
-30° to +75°C |
| Storage Temperature: |
-40° to +85°C |
| Relative Humidity: |
95% non-condensing |
|
PHYSICAL |
| Dimension: |
3.25 inches (height) x 4.4 inches (diameter) |
| Weight: |
1.5 lbs |
| Enclosure: |
High impact, corrosion-proof, PC (polycarbonate)
resin |
| Construction: |
Hermetically sealed, fully weatherproof |
| Mounting: |
Pole mount to 1"-14 threaded pipe |
|
OEM OPTIONS |
| Sentence Available: |
GGA, GLL, GSA, GSV, VTG, RMC, ZDA |
| Output Interval: |
0~60 sec. selectable |
| Operating Mode: |
2D or 2D/3D automatic |
| Satellite Masks: |
SNR, Elevation, PDOP |
| Type of Interface: |
RS-232 (standard), RS-422 (optional) |
| Datum: |
WGS-84 plus 170 user selectable datum |
| Extend Input Voltage: |
Up to 60 VDC |
