| Specifications |
| 1. Receiving/Tracking characteristics |
|
| Numbers of channels |
16 parallel channels |
| Search Engine |
256 channels |
| Tracking Code |
C/A Code Only |
| Frequency |
L1, 1575.42 MHz |
| WAAS |
Optionally Available |
| Tracking capability |
Code plus carrier tracking |
12 satellites simultaneously
(up to 1852km/h under 1.2G) |
| Tracking sensitivity |
-141 dBm |
| 2. Interface |
|
| Communication Port |
3.3V CMOS |
| Communication Speed |
4800bps/(Optional 9.6k, 19.2k, 38.4k) |
| Protocol |
NMEA Type/Optional Binary |
| Differential Data |
RTCM-SC104 format |
| Data Update Rate |
Once per second |
| Synchronous Pulse |
1 PPS synchronized with UTC |
| 3. Power Supply |
|
| Main Power |
Voltage = 3.3VDC +/- 0.3V |
| Current = 64mA typical Searching, 48mA typical Tracking |
| Back-up |
Voltage = 2.1VDC to Operation Voltage |
|
Current = 6 uA |
| 4. Antenna Interface |
|
| Impedance |
50 Ohms |
| NF |
<2dB |
| Gain |
15dB to 35dB (including cable loss) |
| Antenna Detection Circuit |
Available (detecting short or open) |
| Antenna Cable/Connector (soldered to receiver) |
BNC (standard), SMA, SMB, MCX, GT-5 |
| 5. Datum & Others |
|
| Datum |
WGS-84 and 254 other datum |
| 6. Environmental Characteristics |
|
| Operation Temperature |
-30 to +80 °C, Optional -40 to +85 °C |
| Storage Temperature |
-40 to +85 °C |
| Operation Humidity |
20 to 95% at 45 °C |
| TTFF average |
| Hot start (See note 1) |
8 seconds |
| Warm start (See note 2) |
35 seconds |
| Cold start 1(see note 3) |
42 seconds |
| Cold start 2(see note 4) |
46 seconds |
| Re-acquisition time at fixed position |
| Shut-off time 10 sec. |
2 seconds average |
| Shut-off time 60 sec. |
3 seconds average |
| Shut-off time 10 min. |
6 seconds average |
| Note 1: |
All following information valid; Almanac, Ephemeris, Time and Position. |
| Note 2: |
Following information valid; Almanac, Time and Position. Ephemeris not available. |
| Note 3: |
Position only available; Almanac, Ephemeris and Time not available. |
| Note 4: |
Almanac, Ephemeris, Time and Position not available. |
The basic performance of GN-80 listed here is verified in the actual tests conducted in December 2002. Please note all GPS receivers are subject to degradation when Selective Availability (SA) is activated by the U. S. Department of Defense, although, as of May 1st, 2000, it has been deactivated.
All specifications above are subject to change without prior notice.
|
