Ultra High Sensitivity SiRF StarIII 7989 GPS Module with Path Antenna
Features
- 20 channel SiRF StarIII7989 positioning engine
- Ultra high sensitivity to -159 dBm
- SBAS (WAAS, MSAS, and EGNOS) support
- Supports Power saving modes
- Build in backup battery
- Support UART and RS232 ports
- Ultra low power consumption 60mW
- Ultra miniature 29 x 29 mm dimension.
- Operating temperature range: -30 to 85°C
- RoHS compliant (lead-free)
Block diagram
Technical Specifications
| 1. Electrical Characteristics |
|
|
| 1.1 Chipset |
SiRF StarIII GSC3eLP |
|
| 1.2 General |
Frequency |
L1, 1575.42MHz |
| |
Channels, C/A code |
20 1.023 MHz chip rate, 8192 time/frequency search windows |
| 1.3 Accuracy |
Position |
5 meters CEP |
| |
Time |
50 nanosecond rms (1 PPS) |
| 1.4 DGPS Accuracy |
Position |
2.0 meters CEP |
| 1.5 Acquisition Rate |
Reacquisition |
< 1 sec, typical |
| |
Cold start |
35 sec, typical |
| |
Warm start |
35 sec, typical |
| |
Hot start |
1 sec, typical |
| 1.6 Sensitivity |
Tracking |
-159dBm |
| |
Acquisition/Reacquisition |
-155dBm |
| |
Cold start |
-144dBm |
| 1.7 Dynamic Condition |
Altitude |
18,000 meters (60,000 Feet) max. |
| |
Velocity |
515 meters /sec (1000 Knots) max. |
| 1.8 Power |
Main Power |
3.3 VDC typical |
| |
Supply current |
40 mA |
| |
|
|
| |
Backup power |
1.4 ~ 5V |
| 1.9 Serial Port |
Electrical interface |
UART, RS232 |
| 2. Environmental Characteristics |
Protocols |
NMEA0183 v3.0 |
| 2.1Temperature |
Operating range |
- 30 °C to + 85 °C |
| 2.3 Interface |
I/O connector |
6 pin pitch 1.0mm connector
( GE2929P)
12 pin pitch 1.27mm
(GE2929P-N) |
PIN assignment
Dimension
Pin Definition
GE-2929P JP1 (CSI-1182-061R from CSTCONN - www.cstconn.com)
| Pin# |
Name |
Type |
Description |
| 1 |
T-TX |
Output |
UART TXD output |
| 2 |
T-RX |
Input |
UART RX input |
| 3 |
R-TX |
Output |
RS232 TX |
| 4 |
R-RX |
Input |
RS232 RX |
| 5 |
Vcc |
PWR |
DC power input 3.3 ¡V5V |
| 6 |
GND |
PWR |
Ground |
1*6 Pitch 1.0mm
GE-2929P-N JP2 (CPA-2001-1230 from CSTCONN - www.cstconn.com)
| Pin# |
Name |
Type |
Description |
| 1,12 |
NC |
|
|
| 2,11 |
Vcc |
PWR |
DC power input 3.3 ¡V 5V |
| 3,10 |
T-TX |
Output |
UART TX output |
| 4,9 |
T-RX |
Input |
UART RXD input |
| 5,8 |
GND |
PWR |
Ground |
| 6 |
Reset |
Input |
|
| 7 |
NC |
|
|
Boot: High Boot from Flash, Low Boot from serial port
1pps: Time plus
2*6 Pitch 1.27mm
Output NMEA Messages
NMEA-0183 Output Messages
| NMEA Sentence |
Description |
| GGA (default) |
Global Positioning System Fixed Data |
| GLL |
Geographic Position - Latitude/Longitude |
| GSA (default) |
GNSS DOP and Active Satellites |
| GSV (default) |
GNSS Satellites in View |
| RMC (default) |
Recommended Minimum Specific GNSS data |
| VTG |
Course Over Ground and Ground Speed |
| ZDA |
Time and Date |
The detail information please refers to GEXXXX series GPS module NMEA protocol reference manual. |
