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REYAX
RY8
RY825AI
25AI high performance GPS&Glona
GPS&Glonass
&Glonass/
ss/GPS&BeiDou
Parallel mode antenna module
Product description
The REYAX RY825AI GNSS receiver module with embedded
GPS/Glonass/BeiDou antenna enables high performance
navigation in the most stringent applications and solid fix even
in harsh GPS/Glonass/BeiDou visibility environments.
Features
• u-blox NEO-M8N GNSS(GPS, GLONASS, Galileo, BeiDou, QZSS and SBAS) engine.
• Embedded GPS/Glonass/BeiDou Antenna.
• 7 days battery backup time.
• RY825AI
UART and RY825DI
RS-232 interface option
• USB 2.0 interface
• 18Hz Navigation update rate
• Position accuracy 2.0 m CEP
• GNSS & POWER LED Indicator
• Dimension 32mm*26mm*8mm
Part
u-blox NEO-M8N
RS-232 (RY825DI)
Recharge battery
RED GNSS LED
GREEN POWER LED
Pin out
USB_DP
USB_DM
VDDUSB
Pin Description
Name
I/O
Condition
INT0
I
External Interrupt Pin
Leave open if not used.
VDD
I
Supply voltage
TXD
O
Serial Port
RXD
I
Serial Port
GND
-
Ground
USB_DP
I/O
USB Data
USB_DM
I/O
USB Data
VDDUSB
I
USB Supply
PPS
O
Time pulse
SCA2
I/O
DDC Data please refer to u-blox NEO-M8N
SCL2
I/O
DDC Clock please refer to u-blox NEO-M8N
Block Diagram
25mm*25mm
GPS/Glonass/BeiDou antenna
+3.3V Power
Regulator
u-blox NEO-M8N engine.
Flash
TCXO
Rechargeable Backup Battery
Specification
Item
Min.
Operation Voltage
3.5
Typical
Max. Unit
Condition
5.5
VDD
V
Current
34
mA
Battery backup time
7
Day
TXD/RXD DIO voltage
3.3
V
RY825AI UART version
TXD/RXD RS-232 voltage
12
V
RY825DI RS-232 version
Baud Rate
9600
bps
NMEA, Configurable
USB Interface
VDDUSB
V2.0
3
Center Frequency
3.3
3.6
1561.098
V
MHz
1575.42
1602.5625
Navigation update rate
1
Accuracy
BeiDou
GPS
Glonass
Hz
Configurable
2
M
CEP
Cold starts
26
Sec.
Aided starts
2
Sec.
Hot starts
1.5
Sec.
Tracking Sensitivity
-167
dBm
Cold starts Sensitivity
-148
dBm
Hot starts Sensitivity
-156
dBm
Operating Temperature
Antenna
-40
25
18
+85
˚C
25mm*25mm Embedded
Application Schematic
to USB interface
GND
D+
D-
SHELL
5
4
3
1
VCC(+5V)
2
VCC
CON1
USB
+3.3V
RXD
U1
S-1206B33-M3T1G
1
3
I
O
G
to MCU UART interface
+ C2
10uF/16V
VCC(+3.5~+5.5V)
1
2
VDD
INT0
to u-blox Cellular modules
12
GND
3
TXD
11
SDA2
4
RXD
10
SCL2
5
GND
GND
9
6
USB_DP
USB_DM
U1
RY x25AI
7
INT0
8
C3
104p
VDDUSB
+ C1
10uF/16V
2
TXD
SDA2
SCL2
Configuration Hardware tool
Please plug a “USB to TTL UART Adapter Converter” to module.
Configuration software tool
Please download the u-blox u-center http://www.u-blox.com and Access Port http://www.sudt.com/
Please execute the u-center and run the messages-UBX-CFG.
Set to receive GPS&Glonass (default)
Set to receive GPS&BeiDou
Set Baud rate (9600 default)
Set Navigation update rate (1Hz default)
Save Configuration in flash
Dimensions
unit: mm
REYAX TECHNOLOGY CO.,LTD.
Address：6F.-3, No.6, Aly. 30, Ln. 210, Wende Rd., Neihu Dist., Taipei City, Taiwan
Web：http://www.reyax.com
Tel：+886-2-2627-2777
Fax：+886-2-2627-2781
E-mail：[email protected]