Related Manuals for Maestro A2200-A
Summary of Contents for Maestro A2200-A
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Page 1: User Manual
GPS Receivers A2200-A A Description of Maestro’s GPS Receiver Module A2200-A User Manual Version 1.0... -
Page 2: Revision History
Revision History Rev. Date Description 07-11-11 First draft, based on A2200 12-12-11 Updated photo ,Pin out Information,Packing mm-dd-yy Name Date Signature Written by Happy wen 12-12-11 Checked by Sam Law, Wallace Lee 12-12-11 S L,W L Approval by Frank Tang, Calvin Yau 12-12-11 F T,C Y V1.0 –... - Page 3 WIRELESS SOLUTIONS LIMITED. IT MAY NOT BE COPIED OR TRANSMITTED BY ANY MEANS, PASSED TO OTHERS, OR STORED IN ANY RETRIEVAL SYSTEM OR MEDIA, WITHOUT PRIOR CONSENT OF MAESTRO OR ITS AUTHORIZED AGENTS. THE INFORMATION IN THIS DOCUMENT IS, TO THE BEST OF OUR KNOWLEDGE, ENTIRELY CORRECT.
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Page 4: Table Of Contents
1.5.2 Mechanical Characteristics ..................9 1.6 Handling Precautions ..................9 2 Ordering Information ..................10 2.1 GPS Receivers A2200-A ................. 10 2.2 Packing of the A2200-A .................. 10 2.3 Additional Equipment ..................13 3 Quick Start ......................14 3.1 Minimum Configuration ................... 14 3.2 Antennas ...................... - Page 5 9.2 Product Qualification ..................27 9.3 Production Test ....................27 10 Applications and Hints .................. 28 10.1 Initial Module Start ..................28 10.2 Proper Shutdown ..................28 10.3 SiRFaware Support ................... 28 10.4 Push-to-Fix Mode ..................28 10.5 Hibernate Mode..................... 29 10.6 Extended Ephemeris ..................
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Page 6: Introduction
1 Introduction The GPS module A2200-A is Maestro’s first implementation of CSR’s SiRFstarIV ROM chip on GPS module. This is highly integrated GPS receivers that can be used as SMT components. A very easy implementation (power, serial, ON_OFF, and antenna) allows receiving position, velocity and time information. -
Page 7: Characteristics Overview
1.3 RoHS and Lead-Free Information Maestro’s products marked with the lead-free symbol either on the module or the packaging comply with the "Directive 2002/95/EC of the European Parliament and the Council on the Restriction of Use of certain Hazardous Substances in Electrical and Electronic Equipment"... -
Page 8: Label
1.4 Label The A2200-A labels hold the following information: Figure 1: A2200-A label The label is placed on the shield of the module. The data matrix code holds the product type, part number, software release, hardware release, factory code, year &... -
Page 9: Characteristics
A2200-A Weight 0.6 g, 0.022 oz Table 2: A2200-A dimensions and weight 1.6 Handling Precautions The GPS receiver module A2200-A is sensitive to electrostatic discharge (ESD). Please handle with appropriate care. V1.0 – Feb-12 User’s Manual Page 9 of 35... -
Page 10: Ordering Information
2.1 GPS Receivers A2200-A The order number is built as follows: A2200-Axxxx A2200-A is the model name. The “xxxx” refers to the current part number on the module. 2.2 Packing of the A2200-A The A2200-A GPS module come in a tape and reel package suitable for pick and place machines. - Page 11 Figure 3: A2200-A tape specifications (2) Figure 4: A2200-A tape specifications (3) One complete reel holds 1300 pcs A2200-A modules. There are 2 kinds of packaging for shipment: A: One box holds 1 reel Reel diameter: 33 cm Inner box dimensions: 36(W) x 36(L) x 4.5 (H) cm Box dimensions: 38.8 (W) x 38.8 (L) x 5.7 (H) cm...
- Page 12 Inner box dimensions: 36 (W) x 36 (L) x 4.5 (H) cm Outer box dimensions: 38 (W) x 38 (L) x 16 (H) cm Gross weight: 4.92 Kg Net weight: 2.34 Kg V1.0 – Feb-12 User’s Manual Page 12 of 35...
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Page 13: Additional Equipment
2.3 Additional Equipment EVA2200-A Evaluation Kit (including one module A2200-A) Table 3: Additional equipment A detailed description of the EVA2200-A Evaluation Kit can be found in the appro- priate manual. V1.0 – Feb-12 User’s Manual Page 13 of 35... -
Page 14: Quick Start
3 Quick Start In order to allow an easy and quick start with the A2200-A module, this chapter pro- vides a short overview on the important steps to be taken to receive NMEA mes- sages with position information on a serial port (UART). -
Page 15: Antennas
The A2200-A supports passive antennas via an integrated LNA directly. 3.2.2 Active Antennas The A2200-A also supports active antennas directly, i.e. by offering an antenna voltage feed pin (VANT – pin 9). It is recommended to use an active antenna with a supply voltage of 3 to 5 VDC and a maximum current draw of 50 mA. -
Page 16: Serial Port Settings
antenna input of the module) should not exceed 30 dB. The noise figure should be ≤ 1.5dB. 3.3 Serial Port Settings In UART operation (defined by the external pull-up resistor as outlined in Minimum Configuration) the default settings are: NMEA, 4800 baud, 8 data bits, no parity, 1 stop bit, no flow control 3.4 Improved TTFF In order to improve the TTFF (Time To First Fix), it is recommended to keep Vcc supplied at all times. -
Page 17: Mechanical Outline
4 Mechanical Outline 4.1 Details Component Side A2200-A All dimensions in [mm, (inch)] Figure 7: Mechanical outline component side A2200-A V1.0 – Feb-12 User’s Manual Page 17 of 35... -
Page 18: Details Solder Side A2200-A
4.2 Details Solder Side A2200-A Solder pad size (outer pads): 1.0 x 0.8 Solder pad size (inner pads): 1.2 x 1.2 All dimensions in [mm] Figure 8: Mechanical outline solder side A2200-A V1.0 – Feb-12 User’s Manual Page 18 of 35... -
Page 19: Pin-Out Information
5 Pin-out Information 5.1 Layout A2200-A “Pin 1” marker Figure 9: Pin-out information (bottom view) A2200-A Center Ground pins are for shock / vibration resistance purpose. V1.0 – Feb-12 User’s Manual Page 19 of 35... -
Page 20: Description A2200-A Signals
Power Supply None Leave open Reset input (open / HIGH – no reset, LOW - reset) nRST Input Connect to open collector / open drain output! Table 4: Pin description A2200-A V1.0 – Feb-12 User’s Manual Page 20 of 35... -
Page 21: Electrical Characteristics
35 uA Hibernate Status 25 uA Table 5: A2200-A electrical characteristics (1) Peak searching current is characterized by millisecond bursts above average searching current (2) Average searching current is typically only the first two seconds of TTFF (3) Tracking current typically includes tracking and the post searching portion of TTFF 6.2 Absolute Maximum Ratings... -
Page 22: Dc Electrical Characteristics
6.3 DC Electrical Characteristics Symbol Parameter Max Unit TX0, WAKEUP Voh @ 4mA Vol @ 4mA 0.45 nRST for safe reset ON_OFF 1.35 Vcc -0.3 0.45 BOOTSEL 1.35 Table 7: DC electrical characteristic A2200-A V1.0 – Feb-12 User’s Manual Page 22 of 35... -
Page 23: Mounting
7 Mounting This chapter describes the suggested mounting process for the A2200-A receiver module. In a RoHS compliant product with a RoHS compliant process it is recom- mended to use chemical tin as the counter-part to the module’s pins. This will guarantee highest resistance against shocks. -
Page 24: Use Of Gps Antennas
Vias to GND Layer GPS receiver solder pads Figure 10: Antenna connector strip line A2200-A In order to achieve the impedance of 50 , the width of the strip line needs to be calculated. It depends on the thickness or height of the PCB layer (both parameters are shown in following drawing). - Page 25 In this case, the width should be about 1.8 times the height of the PCB: W = 1.8 x H In the example, one would get a width of W = 1.8 x 0.8 mm = 1.44 mm. V1.0 – Feb-12 User’s Manual Page 25 of 35...
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Page 26: Antenna Connections
8.2 Antenna Connections 8.2.1 Passive Antennas A passive antenna connected to ANT_IN input (pin 11) should be placed as close as possible to the GPS receiver. The signal power lost by the antenna cable or lost by the strip line on the PCB can not be recovered by the LNA (Low Noise Amplifier) integrated in the GPS receiver. -
Page 27: Quality And Reliability
High Temperature Operating Life +85C Vibration Variable Frequency Mechanical Shock Please contact Maestro for detailed information. 9.3 Production Test Each module is electrically tested prior to packing and shipping to ensure state of the art GPS receiver performance and accuracy. -
Page 28: Applications And Hints
TTFF to fatal, permanent corruption of EEPROM code area on the module. A controlled and orderly shutdown while the A2200-A is running in full power mode can be initiated by A 100ms pulse on the ON_OFF pin, or ... -
Page 29: Hibernate Mode
duty cycles, it is necessary to toggle the ON_OFF pin. Toggling is done by pulling the signal to HIGH for about 100ms. 10.5 Hibernate Mode In order to enter Hibernate Mode it is necessary to send a shutdown command or to toggle to ON_OFF pin by pulling the signal to HIGH for about 100ms. -
Page 30: Antenna Status Adaptation
10.7 Antenna Status Adaptation This chapter shall give assistance in designing a circuit for detecting if an active antenna is connected to the module. The information about the antenna status can be derived from the ANTSTAT signal generated by this circuit. The examples use values for components that roughly result in the following ANTSTAT output: ... -
Page 31: Antenna Sensor With Current Limiter
10.7.2 Antenna Sensor with Current Limiter This proposal is similar to the first one, but includes a current limiter. Comments and notes as above apply. We strongly recommend simulating and testing the GPS receiver integrated in your product design before implementing the finalized product in the appropriate market ap- plication. -
Page 32: Vant Pin
Vant pin. The easiest way to do that is to connect Vcc to VANT. The maximum cur- rent is 50 mA. Note: Shortcut between ANT and GND may damage the A2200-A GPS receiver module. This should be avoided by using an antenna current limiter. -
Page 33: Evaluation Kit Eva2200-A
For demonstration and easy evaluation of GPS performance Maestro offers an evaluation kit (including one GPS A2200-A module). It contains a USB interface with according drivers to connect easily to a PC. The USB interface is an extension of the serial port 0, therefore sending NMEA sentences or binary information and accepting commands. -
Page 34: Related Information
This manual is created with due diligence. We hope that it will be helpful to the user to get the most out of the GPS module. Inputs regarding errors or mistaken verbalizations and comments or proposals to Maestro, Hongkong, for further improvements are highly appreciated. Maestro Wireless Solutions Limited Address:Unit 3603-09,36/F.,118 Connaught Road West,HK... -
Page 35: List Of Figures
Figure 4: A2200-A tape specifications (3) ...............11 Figure 5: Minimum configuration A2200-A ..............14 Figure 6: RS232 level shifter ...................15 Figure 7: Mechanical outline component side A2200-A ..........17 Figure 8: Mechanical outline solder side A2200-A ..........18 Figure 9: Pin-out information (bottom view) A2200-A ..........19 Figure 10: Antenna connector strip line A2200-A ............24...