RoyalTek RSA-1200L, RSA-1200LX User Manual

RSA-1200L User Manual

RSA-1200LX User Manual

Version 1.0
2008/04/25

This document contains information highly confidential to RoyalTek Company
LTD (RoyalTek). It is provided for the sole purpose of the business discussions
between supplier and RoyalTek and is covered under the terms of the
applicable Non-Disclosure Agreements. Disclosure of this information to other
parties is prohibited without the written consent of RoyalTek.

Prepared by RoyalTek Company LTD.

4F, 188, Wen Hwa 2nd Rd., Kuei Shan.

Tao Yuan 33377, Taiwan

TEL: [phone]
FAX: [phone]

http://www.royaltek.com/contact

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RSA-1200L User Manual

Figure List.......................................................................................................................................II

Table List........................................................................................................................................III

1 Introduction...........................................................................................................................4

1.1 Product applications..........................................................................................4

1.2 Product Picture...................................................................................................5

1.3 RSA-1200LX System Block Diagram..............................................................5

1.4 RSA-1200LX Technique Specification............................................................6

1.5 Application Circuit.............................................................................................8

1.6 Mechanical Layout.............................................................................................9

1.7 Hardware interface...........................................................................................10

2 Software Interface...............................................................................................................12

2.1 NMEA V3.0 Protocol.........................................................................................12

2.1.1 GGA-Global Positioning System Fixed Data......................................12

2.1.2 GLL-Geographic Position –Latitude/Longitude.................................13

2.1.3 GSA-GNSS DOP and Active Satellites.................................................14

2.1.4 GSV-GNSS Satellites in View.................................................................14

2.1.5 RMC-Recommended Minimum Specific GNSS Data.........................15

2.1.6 VTG-Course Over Ground and Ground Speed...................................16

3 Package................................................................................................................................17

3.1 Package Specification.....................................................................................17

4 Contact Information Section.............................................................................................17

5 Revision History.................................................................................................................17

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RSA-1200L User Manual

Figure List

Figure 1-1 RSA-1200LX Front View..........................................................................5

Figure 1-2 RSA-1200LX Bottom View.......................................................................5

Figure 1-3 System Block Diagram............................................................................5

Figure 1-4 Application Circuit Reference................................................................8

Figure 1-5 Mechanical Layout...................................................................................9

Figure 1-6 Hardware Interface.................................................................................10

Figure 3-1 Package Specifications.........................................................................17

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RSA-1200L User Manual

Table List

Table 1-1 Technical Specifications...........................................................................6

Table 1-2 Definition of Pin assignment..................................................................10

Table 2-1 NMEA-0183 Output Messages................................................................12

Table 2-2 GGA Data Format.....................................................................................12

Table 2-3 Position Fix Indicators............................................................................13

Table 2-4 GLL Data Format......................................................................................13

Table 2-5 GSA Data Format......................................................................................14

Table 2-6 Mode 1........................................................................................................14

Table 2-7 Mode 2........................................................................................................14

Table 2-8 GSV Data Format......................................................................................15

Table 2-9 RMC Data Format.....................................................................................15

Table 2-10 VTG Data Format....................................................................................16

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RSA-1200L User Manual

1 Introduction

RoyalTek RSA-1200LX low power and small form factor board is the newest
generation of RoyalTek smart antenna GPS module. The smart antenna GPS module
is powered by SiRF Star III technology and RoyalTek proprietary navigation algorithm
that providing you more stable navigation data. Parallel design is the major new
feature of RSA-1200LX.
The smallest form factor and parallel design is the best choice to be embedded in a
portable device and receiver like PND, mobile phone, car holder, personal locator,
digital camera and vehicle locator. The excellent sensitivity of RSA-1200LX gets the
great performance when going though the urban canyon and foliage

Product Features

² 20 parallel channels
² Extreme fast TTFF at low signal level
² Operable from 3.3V/48mA continuous mode.
² Wire to board connector
² TCXO design

² 0.1 second reacquisition time

² Small form factor with embedded SiRF Star III single chip technology.
² NMEA-0183 compliant protocol/custom protocol.
² 4 Mbits Flash Memory
² Enhanced algorithm for navigation stability
² Excellent sensitive for urban canyon and foliage environments.

² SBAS (WAAS, EGNOS and MSAS) support
² Auto recovery while RTC crashes

² Trickle power supported

1.1 Product applications

² Automotive navigation
² Personal positioning and navigation
² Marine navigation
² Timing application

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RSA-1200LX

RSA-1200L User Manual

1.2 Product Picture

Figure 1-1 RSA-1200LX Front View

Figure 1-2 RSA-1200LX Bottom View

1.3 RSA-1200LX System Block Diagram

System block diagram description :

a. External antenna.
b. 4 Mega bits flash memory
c. 6 pin I/O pin

Figure 1-3 System Block Diagram

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RSA-1200L User Manual

1.4 RSA-1200LX Technique Specification

Table 1-1 Technical Specifications

Impedance：50Ω

No Function Specification

GPS receiver

1 Chipset

2 Frequency L1 1575.42MHz.
3 Code C.A. Code.
4 Channels 20 parallel
5 Chipset Sensitivity -159dBm
6 Cold start 35 sec @ open sky
7 Warm start 35 sec @ open sky
8 Hot start 1 sec @ open sky

9 Reacquisition 0.1sec typical
10 Position accuracy 10meters at 2D RMS.
11 Maximum altitude 18000 m
12 Maximum velocity 514 m/s

1 Trickle power mode 40mA@Average TBD

2 Update rate Continuous operation: 1Hz

3 Testability It shall be able to be tested by SiRF test IV and single channel

4 Protocol setup It shall store the protocol setup in the SRAM memory.
17 DGPS 1.WAAS, EGNOS

Interface

18 LNA 25dB Gain. (Typical)
19 I/O Pin 6pin

Mechanical requirements

20 Weight 8 g Typ.

Power consumption

21 Vcc DC +3.3 V±5%
22 Current

SiRF Star III, GSC3f/LPX
(Digital, RF in a single package)

simulator.

GPS :
Avg Acquisition <50mA@3.3V without ext.Antenna
Avg Tracking <48mA@3.3V without ext.Antenna

格式化: 英文 (美國)

Environment

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RSA-1200L User Manual

23 Operating

temperature

24 Storage temperature -40 ~ 85℃
25 Humidity

-25 ~ 85℃

≦95%

MMCX edge mount Jack Receptacle specification (External Antenna)

Impedance 50ohm
Frequency range 0~6GHz
V.S.W.R 1.2max
Working voltage 175Vrms max
Durability 500 mating

External Antenna spec.
DC supply
DC current 20mA max.
Input return Loss
Output return Loss
Gain

2.85V±2%

≦-10dB
≦-10dB

25 dB typical

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1.5 Application Circuit

RSA-1200L User Manual

Note:

(1) Ground Planes:

This pin2 should be connect to ground.

(2) Serial Interface:

(Ⅰ) The TXA pin is recommended to connect to serial resistance(220Ω)

(Ⅱ) The RXA pin is recommended to connect to serial resistance(220Ω)

(3) Backup Battery:

When module is working, must to supply VCC pin(Pin1) and VBATT
pin(Pin6) power at the same time.
It’s recommended to connect a backup battery to VBATT pin.
In order to enable the warm start and hot start features of the GPS receiver.
If you use backup battery, should be add a bypassing capacitor (10uF) at
VBATT pin. It can reduce noise and increase the stability.

Figure 1-4 Application Circuit Reference

and pull up (10KΩ). It can increase the stability of serial data. (Default
NMEA)

and pull up (10KΩ). It can increase the stability of serial data. (Default
NMEA)

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RSA-1200L User Manual

(4) Power:

Connect VCC pin to DC 3.3V. The power supply must add bypass
capacitor(10uF and 1uF).It can reduce the Noise from power supply and
increase power stability.

(5) GPIO:

The GPIOs function are for customer used.
If no use GPIO function, it don’t connect anything.

1.6 Mechanical Layout

Figure 1-5 Mechanical Layout

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+

+

1.7 Hardware interface

RSA-1200L User Manual

RSA-1200LX
Top View

Figure 1-6 Hardware Interface

Table 1-2 Definition of Pin assignment

Pin Defined

Pin Signal Name I/O Description Characteristics
1 VCC I DC Supply

Voltage input
2 GND G Ground Reference Ground
3 TXA O Serial port A

4 RXA I Serial port A
5 GPIO-1 I/O General

purpose I/O
6 VBATT I Backup voltage

supply

DC +3.3V±5%

10uACurrent

≤

VVVVV

VVVVV

86.00.3V- 0.215.3 ≤≤≥≥

VVVVV

86.00.3V- 0.215.3 ≤≤≥≥

VVVVV

71.0 14.285.2 ≤≥≥

7.0 38.285.2 ≤≥≥

OLOH

ILIH

ILIH

OLOH

3.6V~2.5 DC

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RSA-1200L User Manual

Definition of Pin assignment

VCC(+3.3V DC power Input)

This is the DC power supply input pin for GPS system. It provides voltage to
module.

GND

GND provides the reference ground.

TXA

This is the main transmitting channel and is used to output navigation and
measurement data to SiRFdemo or user written software

RXA

This is the main receiver channel and is used to receive software commands to
the board from SIRFdemo software or from user written software.

VBATT (Backup battery )

When module is working, must to supply VCC pin(Pin1) and VBATT pin(Pin6)
power at the same time.
This is the battery backup input that powers the SRAM and RTC when main
power is removed. Typical current draw is 10uA.

The supply voltage should be between 2.5V and 3.6V.

GPIO Functions

2 Several I/Os are connected to the digital interface connector for custom

applications.

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RSA-1200L User Manual

Software Interface

2.1 NMEA V3.0 Protocol

Its output signal level is TTL: 4800 bps (default), 8 bit data, 1 stop bit and no parity. It supports
the following NMEA-0183
Messages: GGA, GLL, GSA, GSV, RMC and VTG.
NMEA Output Messages: the Engine board outputs the following messages as shown in Table
2-1:

Table 2-1 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

2.1.1 GGA-Global Positioning System Fixed Data

Table 2-2 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

Table 2-2 GGA Data Format

Name Example Units Description

Message ID $GPGGA
UTC Position 161229.487
Latitude 3723.2475
N/S Indicator N N=north or S=south
Longitude 12158.3416
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

GGA protocol header
hhmmss.sss
ddmm.mmmm

Dddmm.mmmm

格式化: 法文 (法國)

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RSA-1200L User Manual

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＞

Table 2-3 Position Fix Indicators

Value Description

0 Fix not available or invalid
1 GPS SPS Mode, fix valid
2 Differential GPS, SPS Mode, fix valid

3-5 Not Supported GPS PPS Mode, fix valid

6 Dead Reckoning Mode, fix valid

End of message termination

格式化: 法文 (法國)

2.1.2 GLL-Geographic Position –Latitude/Longitude

Table 2-4 contains the values of the following
Example: $GPGLL, 3723.2475, N, 12158.3416, W, 161229.487, A*2C

Table 2-4 GLL Data Format

Name Example Units

Message ID $GPGLL GLL protocol header
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
UTC Position 161229.487 hhmmss.ss
Status A A=data valid or V=data not valid
Mode A A=Autonomous, D=DGPS, E=DR
Checksum *2C
＜CR＞＜LF＞

End of message termination

Description

格式化: 法文 (法國)

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RSA-1200L User Manual

2.1.3 GSA-GNSS DOP and Active Satellites

Table 2-5 contains the values of the following example:
$GPGSA, A, 3, 07, 02, 26, 27, 09, 04, 15, , , , , , 1.8,1.0,1.5*33

Table 2-5 GSA Data Format

Name Example Units

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＞

End of message termination

Table 2-6 Mode 1

Value Description

1 Fix not available
2 2D
3 3D

Description

Table 2-7 Mode 2

Value Description

M Manual-forced to operate in 2D or 3D mode
A Automatic-allowed to automatically switch 2D/3D

2.1.4 GSV-GNSS Satellites in View

Table 2-8 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

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RSA-1200L User Manual

Table 2-8 GSV Data Format

Name Example Units Description

Message ID $GPGSV
Number of
Messages1
Messages Number
Satellites in View 07
Satellite ID 07 Channel 1(Range 1 to 32)
Elevation 79 degrees Channel 1(Maximum 90)
Azimuth 048 degrees Channel 1(True, Range 0 to 359)
SNR (C/No) 42 dBHz Range 0 to 99, null when not

…. ….
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

Checksum *71
＜CR＞＜LF＞

1

Depending on the number of satellites tracked multiple messages of GSV data may be required.

2 Range 1 to 3

1

1 Range 1 to 3

End of message termination

2.1.5 RMC-Recommended Minimum Specific GNSS Data

Table 2-9 contains the values of the following example:
$GPRMC, 161229.487, A, 3723.2475, N, 12158.3416, W, 0.13, 309.62, 120598, ,*10

Table 2-9 RMC Data Format

Name Example Units 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

GSV protocol header

tracking

tracking

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RSA-1200L User Manual

Course Over
Ground
Date 120598 ddmmyy
Magnetic Variation
Mode A A=Autonomous, D=DGPS, E=DR
Checksum *10

2.1.6 VTG-Course Over Ground and Ground Speed

Table 2-10 contains the values of the following example:
$GPVTG, 309.62, T, , M, 0.13, N, 0.2, K*6E

Name Example Units Description

Message ID $GPVTG
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
Mode A A=Autonomous, D=DGPS, E=DR
Checksum *6E
＜CR＞＜LF＞

309.62 degrees True

degrees E=east or W=west

Table 2-10 VTG Data Format

VTG protocol header

End of message termination

格式化: 法文 (法國)

格式化: 法文 (法國)

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RSA-1200L User Manual

3 Package

A. .

3.1 Package Specification

Shipment Method: PE Bag

Figure 3-1 Package Specifications

4 Contact Information Section

Contact: [e-mail]

Headquarter:

4F, 188, Wen Hwa 2nd Rd., Kuei Shan.
Tao Yuan 33377, Taiwan
TEL: [phone]
FAX: [phone]

Web Site: http://www.royaltek.com
Web Site Customer Service: http://www.royaltek.com/contact

格式化: 德文 (德國)

5 Revision History

Title RSA-1200LX GPS Module
Doc Type User Manual

Revision
Number

1.0 2008/04/25 Linda Fan Initial Release

Date Author Change notice

Copyright © 2006-2007, RoyalTek Company Ltd.

17

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