Combination GPS/GLONASS Receivers:
GPS and GLONASS Combination Antennas:
NDV-6909
NDV-6909 GPS/GLONASS Engine Board
NDV-6909 is a high-sensitivity and ultra-compact GPS/GLONASS engine board. It is powered by GLONASS CENTRAL GPS/GLONASS engine, which can perform excellent single reception capability and fast TTFF in weak signal environments. It is suitable for portable electronic devices such as automotive navigation devices, handheld navigation devices and other GPS/GLONASS applications.
Product Features:
- Glonass Central GLONASS/GPS chipset
- 24 GLONASS/GPS Compatible channels
- Fast TTFF at low signal environment
- 2 serial ports
- SMT type with stamp holes
- Small form factor (40X70X5mm)
- Support NMEA 0183 V3 (Default: GGA,GSA,GSV,RMC,VTG)
- Support direct interface with TTL levels
- Support direct interface with CMOS levels
- ROHS compliant
Product Specification
Chipset
GLONASS CENTRAL GLONASS/GPS Chipset
Frequency
L1,1575.42MHZ 1598.0625 to 1615.5000MHZ
Code
C/A and digital processing
Protocol
NEMA0183v3
Serial I/O Port
2 Serials Ports
Available Baud Rate
9600/19200/38400/115200
Channels
24
Sensitivity
Tracking: -160dBm
Cold Start
180 seconds
Warm Start
90 seconds
Hot Start
30 seconds
Reacquisition
1 seconds
Accuracy
Position:<10m RMS
Velocity:0.05m/s
Time:1us(UTC)
Maximum Acceleration
18,000 meter
Maximum Altitude
<550 meter/second
Maximum Velocity
<10G
Update Rate
1HZ—10HZ
Interface
I/O Pins
17-pin stamp holes
Physical Characteristic
Dimensions
40X70X4mm
DC Characteristics
Power supply
3.3--5.5V DC
Power Consumption
Acquisition:200mA
Power supply
Tracking:200mA
Acquisition:200mA
Environmental range
Humidity Range
5% to 95% non-condensing
Operation Temperature
-40°C to +80°C
Storage Temperature
-55°C to +85°C
Module Pin Assignment (Description):
Pin#
Name
1
RF_IN
GPS/GLONASS RF SINGNAL INPUT
2
RFIN_GND
RF GROUND
3
GND
GROUND
4
3.3-5.5V
DC Supply voltage input
5
GND
GROUND
6
GND
GROUND
7
GND
GROUND
8
GND
GROUND
9
GND
GROUND
10
GND
GROUND
11
P2_RX
Serial input for channel
12
P2_RX
Serial input for channel
13
GND
GROUND
14
VBAT
Backup battery supply voltage
Application Circuit
Optional Connector
Two high speed (115.2 Kbps) standard RS232 Serial Ports
Pin Description of XP_GPS Connector
1 2
Pin#
Description
1
TXDA
2
RXDA
3
GND
4
GND
5
TXDB
6
RXDB
7
Reset
8
BOOT
9
GND
10
GND
11
Power
12
Power
13
Power ON/OFF
14
-
15
GND
16
1 PPS
17
Event
18
COMMSW
19
Red LED
19 20
20
Green LED
GPS/GLONASS Active Antenna specification (Recommendation)
Frequency
1575 - 1615MHZ
Axial Ratio
3dB Typical
Output Impedance
50 OHM
Polarization
RHCP
Amplifier Gain
21 - 25dB
OUTPUT VSWR:
1.5Max
Noise Figure
1.5dB max
Dimensions
NMEA Input/output Message
NMEA V3.0 Protocol
Messages: GGA, GLL, GSA, GSV, RMC and VTG.
NMEA Output Messages: the Engine board outputs the following messages as shown in Table
Messages: GGA, GLL, GSA, GSV, RMC and VTG.
NMEA Output Messages: the Engine board outputs the following messages as shown in Table
NMEA-0183 Output Messages
NMEA Record
Description
GGA
Global positioning system fixed data
GLL
Geographic position – latitude / longitude
GSA
GNSS DOP and active satellites
GSV
GNSS satellites in view
RMC
Recommended minimum specific GNSS data
VTG
Course over ground and ground speed
GGA-Global Positioning System Fixed Data
Table contains the values of the following example:
$GPGGA, 161229.487, 3723.2475, N, 12158.3416, W, 1, 07, 1.0, 9.0, M, , , ,0000*18
$GPGGA, 161229.487, 3723.2475, N, 12158.3416, W, 1, 07, 1.0, 9.0, M, , , ,0000*18
GGA Data Format
Name
Example
Unit
Description
Message ID
$GPGGA
GGA protocol header
UTC Position
161229.487
hhmmss.sss
Latitude
3723.2475
ddmm.mmmm
N/S Indicator
N
N=north or S=south
Longitude
12158.3416
ddmm.mmmm
E/W Indicator
W
E=east or W=west
Position Fix Indicator
1
See Table 2-1
Satellites Used
07
Range 0 to 12
HDOP
1.0
Horizontal Dilution of Precision
MSL Altitude
9.0
meters
Units
M
meters
Geoid Separation
meters
Units
M
meters
Age of Diff. Corr.
second
Null fields when DGPS is not used
Diff. Ref. Station ID
0000
Checksum
*18
<CR> <LF>
3723.2475
End of message termination
Position Fix Indicators
Value
Description
0
Fix not available or invalid
1
GPS SPS Mode, fix valid
2
Differential GPS, SPS Mode, fix valid
3
GPS PPS Mode, fix valid
GLL-Geographic Position –Latitude/Longitude
Table contains the values of the following Example:
$GPGLL, 3723.2475, N, 12158.3416, W, 161229.487, A*2C
$GPGLL, 3723.2475, N, 12158.3416, W, 161229.487, A*2C
GLL Data Format
Name
Example
Unit
Description
Message ID
$GPGLL
GGA protocol header
Latitude
3723.2475
ddmm.mmmm
N/S Indicator
N
N=north or S=south
Longitude
12158.3416
ddmm.mmmm
E/W Indicator
W
E=east or W=west
UTC Position
161229.487
hhmmss.ss
Status
A
A=data valid or V=data not valid
Checksum
*2C
<CR><LF>
End of message termination
GSA-GNSS DOP and Active Satellites
Table contains the values of the following example:
$GPGSA, A, 3, 07, 02, 26, 27, 09, 04, 15, , , , , , 1.8,1.0,1.5*33
$GPGSA, A, 3, 07, 02, 26, 27, 09, 04, 15, , , , , , 1.8,1.0,1.5*33
GSA Data Format
Name
Example
Unit
Description
Message ID
$GPGSA
GSA protocol header
Mode 1
A
See Table 4-2
Mode 2
3
See Table 4-1
Satellite Used
07
Sv on Channel 1
Satellite Used
02
Sv on Channel 2
....
....
Satellite Used
Sv on Channel 12
PDOP
1.8
Position Dilution of Precision
HDOP
1.0
Horizontal Dilution of Precision
VDOP
1.5
Vertical Dilution of Precision
Checksum
*33
<CR><LF>
1.5
End of message termination
Table 4-2 Mode 1
Value
Description
1
Fix not available
2
2D
3
3D
Table 4-2 Mode 2
Value
Description
M
Manual-forced to operate in 2D or 3D mode
A
Automatic-allowed to automatically switch 2D/3D
GSV-GNSS Satellites
Table contains the values of the following example:
$GPGSV, 2, 1, 07, 07, 79, 048, 42, 02, 51, 062, 43, 26, 36, 256, 42, 27, 27, 138, 42*71$GPGSV, 2, 2, 07, 09, 23, 313, 42, 04, 19, 159, 41, 15, 12, 041, 42*41
$GPGSV, 2, 1, 07, 07, 79, 048, 42, 02, 51, 062, 43, 26, 36, 256, 42, 27, 27, 138, 42*71$GPGSV, 2, 2, 07, 09, 23, 313, 42, 04, 19, 159, 41, 15, 12, 041, 42*41
GGA Data Format
Name
Example
Unit
Description
Message ID
$GPGSV
GSV protocol header
Number of Messages
2
Range 1 to 3
Messages Number 1
1
Range 1 to 3
Satellites in View
07
Satellite ID
07
Channel 1(Range 1 to 32)
Elevations
79
degrees
Range 1 to 3
Azimuth
048
degrees
Channel 1(True, Range 0 to 359)
SNR (C/No)
42
dBHz
Range 0 to 99, null when not tracking
....
....
Satellite ID
27
Channel 4(Range 1 to 32)
Elevation
27
degrees
Channel 4(Maximum 90)
Azimuth
138
degrees
Channel 4(True, Range 0 to 359)
SNR (C/No)
42
dBHz
Range 0 to 99, null when not tracking
Checksum
*71
<CR><LF>
End of message termination
RMC-Recommended Minimum Specific GNSS Data
Table contains the values of the following example:
$GPRMC, 161229.487, A, 3723.2475, N, 12158.3416, W, 0.13, 309.62, 120598, ,*10
$GPRMC, 161229.487, A, 3723.2475, N, 12158.3416, W, 0.13, 309.62, 120598, ,*10
GGA Data Format
Name
Example
Unit
Description
Message ID
$GPRMC
RMC protocol header
UTC Position
161229.487
hhmmss.sss
Status
A
A=data valid or V=data not valid
Latitude
3723.2475
ddmm.mmmm
N/S Indicator
N
N=north or S=south
Longitude
12158.3416
dddmm.mmmm
E/W Indicator
W
E=east or W=west
Speed Over Ground
0.13
knots
Course Over Ground
309.62
degrees
True
Date
120598
ddmmyy
Magnetic Variation
degrees
E=east or W=west
Checksum
*10
<CR><LF>
End of message termination
VTG-Course Over Ground and Ground Speed
Table contains the values of the following example:
$GPVTG, 309.62, T, , M, 0.13, N, 0.2, K*6E
$GPVTG, 309.62, T, , M, 0.13, N, 0.2, K*6E
VTG Data Format
Name
Example
Unit
Description
Message ID
$GPVTG
VTG protocol header
Course
309.62
degrees
Measured heading
Reference
T
True
Course
degrees
Measured heading
Reference
M
Magnetic
Speed
0.13
knots
Measured horizontal speed
Units
N
Knots
Speed
0.2
km/hr
Measured horizontal speed
Units
K
Kilometer per hour
Checksum
*6E
<CR><LF>
End of message termination
