Beitian BN-185T GNSS Module + Antenna Datasheet Revision 5.39 User Manual
- June 8, 2024
- Beitian
Table of Contents
Beitian BN-185T GNSS Module + Antenna Datasheet Revision 5.39
Features
| Item | Description |
|---|---|
| Electrical Characteristics | Chipset |
| Frequency | GPS L1, GLONASS L1, BDS B1, GALILEO E1, SBAS L1, QZSS L1 |
| Receiving Format | GPS, GLONASS, BDS, GALILEO, SBAS, QZSS. |
Default GPS, GLONASS, SBAS, QZSS.
Channels| 72 Searching Channel
Sensitivity| Tracking| -167dBm
Reacquisition| -160dBm
Cold Start| -148dBm
Hot Start| -156dBm
Accuracy| Position Horizontal| 2.0 m CEP 2D RMS SBAS Enable (Typical Open Sky)
Velocity| 0.1m/sec 95% (SA off)
Timing| 1us synchronized to GPS time
Acquisition Time| Cold Start| 26s
Warm Start| 25s
Hot Start| 1s
Data Output| Support Rate| 4800bps to 921600bps, Default 9600bps
Data Level| TTL Level
Data Protocol| NMEA-0183
NMEA message| RMC, VTG, GGA, GSA, GSV, GLL
Concurrent GNSS| 1Hz-10Hz, Default 1Hz
FLASH| 4M FLASH, Store the configuration permanently
Operational Limits| Altitude| <50,000m
Velocity| <515m/s
Acceleration| <4g
Power Consumption| VCC| DC Voltage 3.6V-5.5V, Typical: 5.0V
Current| Capture 50mA/5.0V
Mechanical Specifications| Dimension| 18.5mm18.5mm9.5mm
Weight| 8.1g
Connector| 1.25mm 4pins connector
Environment| Operating Temp| -40 °C ~ +85°C
Storage Temp| -40°C ~ +105°C
LED| Built-in LED| TX LED: blue. The data output, TX LED flashing
Pin Description
| PIN | PIN Name | I/O | Description |
|---|---|---|---|
| 1 | RX | I | TTL Serial Data Input. |
| 2 | TX | O | TTL Serial Data Output. |
| 3 | GND | G | Ground |
| 4 | VCC | I | DC 3.6V – 5.5V supply input, Typical: 5.0V |
LED
- TX LED: blue. The data output, TX LED flashing
Bottom view
DIMENSION
18.5mm18.5mm9.5mm
NMEA message output sample：
$GNRMC,073114.00,A,2237.56240,N,11401.59614,E,1.329,21.11,020916,,,A, 37
$GNVTG,21.11,T,,M,1.329,N,2.462,K,A1B
$GNGGA,073114.00,2237.56240,N,11401.59614,E,1,12,0.78,112.9,M,-2.5,M,, 54
$GNGSA,A,3,19,05,02,06,17,12,09,13,,,,,1.48,0.78,1.26,101
$GNGSA,A,3,69,83,84,70,68,82,,,,,,,1.48,0.78,1.26,20E
$GPGSV,4,1,13,02,46,340,36,05,52,254,37,06,42,041,41,09,22,053,40,06E
$GPGSV,4,2,13,12,32,282,35,13,13,185,33,17,36,131,37,19,57,119,44,066
$GPGSV,4,3,13,20,03,237,,23,00,038,,25,09,311,19,42,51,128,32,060
$GPGSV,4,4,13,50,46,123,33,050
$GLGSV,2,1,08,68,25,027,39,69,78,011,36,70,40,213,43,74,00,259,,078
$GLGSV,2,2,08,82,06,124,36,83,46,085,44,84,44,358,41,85,05,324,14,074
$GNGLL,2237.56240,N,11401.59614,E,073114.00,A,A*7C
NMEA Message Talker IDs
| Configured GNS | Talker ID |
|---|---|
| GPS, SBAS, QZSS | GP |
| GLONASS | GL |
| GALILEO | GA |
| BEIDOU | GB |
| Any combination of GNSS | GN |
NMEA Message Structure
$xxGGA,time,lat,NS,long,EW,quality,numSV,HDOP,alt,M,sep,M,diffAge,diffS
ation*cs
Example:
$GPGGA,092725.00,4717.11399,N,00833.91590,E,1,08,1.01,499.6,M,48.0,M,, 5B
| Field No | Name | Unit | Format | Example | Description |
|---|---|---|---|---|---|
| 0 | xxGGA | – | string | $GPGGA | GGA Message ID (xx = current Talker ID) |
| 1 | time | – | hhmmss.ss | 092725.00 | UTC time |
| 2 | lat | – | ddmm.mmmmm | 4717.11399 | Latitude (degrees & minutes) |
| 3 | NS | – | character | N | North/South indicator |
| 4 | long | – | dddmm.mmmmm | 00833.91590 | Longitude (degrees & minutes) |
| 5 | EW | – | character | E | East/West indicator |
| 6 | quality | – | digit | 1 | 0: No Fix / Invalid 1:Standard GPS (2D/3D) |
2:Differential GPS
6: Estimated (DR) Fix
7| numSV| –| numeric| 08| Number of satellites used
8| HDOP| –| numeric| 1.01| Horizontal Dilution of Precision
9| alt| m| numeric| 499.6| Altitude above mean sea level
10| uAlt| –| character| M| Altitude units: meters (fixed field)
11| sep| m| numeric| 48.0| Geoid separation: difference between
geoid and mean sea level
12| uSep| –| character| M| Separation units: meters (fixed field)
13
|
diffAge
|
s
|
numeric
|
–
| Age of differential corrections (blank when DGPS is not used)
14
|
diffStation
|
–
|
numeric
|
–
| ID of station providing differential corrections (blank when DGPS is not
used)
15| cs| –| hexadecimal| *5B| Checksum
16|
Message Structure:
$xxGLL,lat,NS,long,EW,time,status,posModecs
Example:
$GPGLL,4717.11364,N,00833.91565,E,092321.00,A,A6
| Field No | Name | Unit | Format | Example | Description |
|---|---|---|---|---|---|
| 0 | xxGLL | – | string | $GPGLL | GLL Message ID (xx = current Talker ID) |
| 1 | lat | – | ddmm.mmmmm | 4717.11364 | Latitude (degrees & minutes) |
| 2 | NS | – | character | N | North/South indicator |
| 3 | long | – | dddmm.mmmmm | 00833.91565 | Longitude (degrees & minutes) |
| 4 | EW | – | character | E | East/West indicator |
| 5 | time | – | hhmmss.ss | 092321.00 | UTC time |
| 6 | status | – | character | A | V = Data invalid or receiver warning, A = Data |
valid
7| posMode| –| character| A| Positioning mode
8| cs| –| hexadecimal| *60| Checksum
9|
Message Structure: $xxGSA,opMode,navMode{,sv},PDOP,HDOP,VDOP,systemIdcs
Example:
$GPGSA,A,3,23,29,07,08,09,18,26,28,,,,,1.94,1.18,1.54,10D
| Field No | Name | Unit | Format | Example | Description |
|---|---|---|---|---|---|
| 0 | xxGSA | – | string | $GPGSA | GSA Message ID (xx = current Talker ID) |
| 1 | opMode | – | character | A | Operation mode |
M:Manually set to operate in 2D or 3D mode
A:Automatically switching between 2D or 3D mode
2| navMode| –| digit| 3| Navigation mode 1:Fix not available 2:2D Fix 3:3D Fix
Start of repeated block (12 times)
3 + 1N| sv| –| numeric| 29| Satellite number
End of repeated block
15| PDOP| –| numeric| 1.94| Position dilution of precision
16| HDOP| –| numeric| 1.18| Horizontal dilution of precision
17| VDOP| –| numeric| 1.54| Vertical dilution of precision
18| systemId| –| numeric| 1| NMEA defined GNSS System ID NMEA v4.1 and above
only
19| cs| –| hexadecimal| 0D| Checksum
20|
Message Structure:
$xxGSV,numMsg,msgNum,numSV,{,sv,elv,az,cno},signalIdcs
Example:
$GPGSV,3,1,10,23,38,230,44,29,71,156,47,07,29,116,41,08,09,081,36,07F
$GPGSV,3,2,10,10,07,189,,05,05,220,,09,34,274,42,18,25,309,44,072
$GPGSV,3,3,10,26,82,187,47,28,43,056,46,07
| Field No | Name | Unit | Format | Example | Description |
|---|---|---|---|---|---|
| 0 | xxGSV | – | string | $GPGSV | GSV Message ID (xx = GSV Talker ID) |
| 1 | numMsg | – | digit | 3 | Number of messages, total number of GSV messages being |
output
2| msgNum| –| digit| 1| Number of this message
3| numSV| –| numeric| 10| Number of satellites in view
Start of repeated block (1..4 times)
4 +
4*N
|
SV
|
–
|
numeric
|
23
|
Satellite ID
5 +
4*N
| elv| deg| numeric| 38| Elevation (range 0-90)
6 +
4*N
| az| deg| numeric| 230| Azimuth, (range 0-359)
7 +
4*N
| cno| dBH| numeric| 44| Signal strength (C/N0, range 0-99), blank when not
tracking
End of repeated block
5..
16
|
signalId
|
–
|
numeric
|
0
| NMEA defined GNSS Signal ID (0 = All signals) NMEA v4.1 and above only
6..
16
| cs| –| hexadecimal| *7F| Checksum
7..
16
|
Message Structure: $xxRMC,time,status,lat,NS,long,EW,spd,cog,date,mv,mvEW,posMode,navStat scs Example: $GPRMC,083559.00,A,4717.11437,N,00833.91522,E,0.004,77.52,091202,,,A,V57
| Field No | Name | Unit | Format | Example | Description |
|---|---|---|---|---|---|
| 0 | xxRMC | – | string | $GPRMC | RMC Message ID (xx = current Talker ID) |
| 1 | time | – | hhmmss.ss | 083559.00 | UTC time, see note on UTC representation |
| 2 | status | – | character | A | Status |
V:Navigation receiver warning
A :Data valid, see position fix flags description
3| lat| –| ddmm.mmmmm| 4717.11437| Latitude (degrees & minutes), see format
description
4| NS| –| character| N| North/South indicator
5| long| –| dddmm.mmmmm| 00833.91522| Longitude (degrees & minutes), see
format description
6| EW| –| character| E| East/West indicator
7| spd| Knos| numeric| 0.004| Speed over ground
8| cog| degr| numeric| 77.52| Course over ground
9| date| –| ddmmyy| 091202| Date in day, month, year format, see note on UTC
representation
10| mv| degrees| numeric| –| Magnetic variation value (blank – not supported)
11| mvEW| –| character| –| Magnetic variation E/W indicator (blank – not
supported)
12| posMode| –| character| –| Mode Indicator, see position fix flags
13| navStatus| –| character| V| Navigational status indicator (V = Equipment
is not providing navigational status information)
14| cs| –| hexadecimal| *57| Checksum
15|
Message Structure:
$xxVTG,cogt,T,cogm,M,knots,N,kph,K,posModecs
Example:
$GPVTG,77.52,T,,M,0.004,N,0.008,K,A06
| Field No | Name | Unit | Format | Example | Description |
|---|---|---|---|---|---|
| 0 | xxVTG | – | string | $GPVTG | VTG Message ID (xx = current Talker ID) |
| 1 | cogt | degrees | numeric | 77.52 | Course over ground (true) |
| 2 | T | – | character | T | Fixed field: true |
| 3 | cogm | degrees | numeric | – | Course over ground (magnetic), not output |
| 4 | M | – | character | M | Fixed field: magnetic |
| 5 | knots | knots | numeric | 0.004 | Speed over ground |
| 6 | N | – | character | N | Fixed field: knots |
| 7 | kph | km/ | numeric | 0.008 | Speed over ground |
| 8 | K | – | character | K | Fixed field: kilometers per hour |
| 9 | posMode | – | character | A | Mode Indicator, see position fix flags |
description
10| cs| –| hexadecimal| *06| Checksum
11|
Beitian BN-185T GNSS Module Antenna Datasheet Revision 5.39 User Manual –
Download [optimized]
Beitian BN-185T GNSS Module Antenna Datasheet Revision 5.39 User Manual –
Download
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>