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Navia ML8088s Скачать руководство пользователя страница 5

Evaluation Board of ML8088s Receiver

Operating Manual 2.0

5

Technical Specifications

Technical specifications of the evaluation board of the ML8088s receiver are shown in table

1.

Table 1.

Specification

Value

Navigation receiver

ML8088s or ML8088sE

Type of antenna

Active, passive

Antenna connector

SMA

PC connection interface

USB

Type of interface converters used

FT2232D

USB interface connector

USB-B F

Number of PC communication channels

1

Number of displayed COM ports

2

Primary purpose of COM 1 communication channel

NMEA messages

Primary purpose of COM 2 communication channel

Debug messages, programming

Receiver power on indicator

yes

NMEA signals indication

yes

GNSS status signal indicator

yes

RTC battery power supply

external

Overall dimensions, mm³

60x35x12 - without connectors
75x35x18 - with connectors

Board weight, grams

28

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Содержание ML8088s

Страница 1: ...Navigation Receiver ML8088s Evaluation Board Operating Manual Version 2 0 St Petersburg 2013...

Страница 2: ...ion Board 9 The Evaluation Board Circuit Diagram 11 Navia GLONASS GPS Application 12 The Board Activation 13 Application Configuration 13 The Application Operation 16 Restart 17 Data Output redirectio...

Страница 3: ...asurement channels the signals of space navigation system spacecraft GLONASS in the frequency range L1 PT code GPS frequency L1 C A code and GALILEO at the frequency E1 The navigation receiver ML8088s...

Страница 4: ...on of the old model evaluation board is available in the document Evaluation board ML8088s RE v1_0 pdf Please see Figure 2 for the appearance of the evaluation board Fig 2 The appearance of a evaluati...

Страница 5: ...nterface USB Type of interface converters used FT2232D USB interface connector USB B F Number of PC communication channels 1 Number of displayed COM ports 2 Primary purpose of COM 1 communication chan...

Страница 6: ...ion of indication and switching elements on the evaluation board of ML8088s receiver The figure shows antenna connector Antenna cable connector USB signal LED GNSS receiver power supply voltage LED PW...

Страница 7: ...that attach the module with electronic components of a evaluation board with external devices or left unconnected The purpose of the switch pins is shown in Table 2 Table 2 Signal Pin Explanation Com...

Страница 8: ...8 9 7 8 remove GNSS status 11 10 11 11 12 Rx0 14 13 14 13 14 14 15 TX0 17 16 17 16 17 17 18 GND 20 always connected V_BAT 23 VCC_3 3V 26 25 26 25 26 26 27 RST 29 28 29 28 29 29 30 28 29 Notes Move a j...

Страница 9: ...arget device being developed and test how the module functions as a part of the target device without material installation of the module This allows considerable acceleration of the new device develo...

Страница 10: ...603 R12 0 smd 0603 R13 NC smd 0603 Quartz crystal resonators BQ1 6MHz HC49US low profile Transistors VT1 MMUN2111LT1G sot23 VT2 BC 847 C sot23 LED HL1 KP3216SEC smd 1206 HL2 KPK3216VGC smd 1206 HL3 KP...

Страница 11: ...Board of ML8088s Receiver Operating Manual 2 0 11 The Evaluation Board Circuit Diagram The ML8088s receiver evaluation board circuit diagram is presented in Figure 6 Fig 6 The evaluation board circui...

Страница 12: ...site at the address http www ftdichip com Drivers VCP htm where you have to select the driver matching the operation system of the user s computer Further this document describes the interaction of Na...

Страница 13: ...onnected to the computer This is necessary because after the application has been started it checks all the available serial ports of the user computer If the board is connected to the computer throug...

Страница 14: ...age Data exchange port is not specified Figure 9B Data exchange port quick search window Figure 9C The message Data exchange port has been identified The board operation can require changing the port...

Страница 15: ...the Data Source port and Debugging Information Port numbers should not coincide and then click the Save button All the configuration can also be done manually To do this open the Settings menu tab see...

Страница 16: ...ads and analyses the input data and displays a number of parameters numbers of detected satellites the signal strength of detected satellites numbers of satellites participating in the decision making...

Страница 17: ...et and restart the module The TTTF parameter Time To First Fix indicates the time elapsed from running the restart command until receiving the correct position coordinates Data Output redirection Fig...

Страница 18: ...on Two ways to define used satellite group exist with parameter save and without parameter save Saving parameters allows using previously saved satellite group on furhter application launch This setti...

Страница 19: ...nt window tab This tab shows the layout graph of coordinate s distribution indication Coordinates are shown as point set The first point always located in the coordinate origin The red dot indicates t...

Страница 20: ...e PDOP VDOP HDOP GDOP exceeds the threshold the navigation solution is treated incorrect invalid ST AGPS mode Fig 19 NAVIA GLONASS GPS application 1PPS signal level window tab This tab allows to switc...

Страница 21: ...tion of position precision only in the Western region of Russia in the other regions its use will be at least useless Parameters Fig 21 GLONASS GPS application reciever s read and write parameter wind...

Страница 22: ...88s Receiver Operating Manual 2 0 22 Miscellaneous Fig 22 GLONASS GPS application reciever firmware version window tab This tab shows module s navigation library version and the text string for firmwa...

Страница 23: ...6 17 GND Antenna connection jack Analog 21 IN_RF DC 3 3V Power 13 V_IN Backup battery circuit Power 12 V_RTC UART1 OUT NMEA In Out 4 TX1 UART1 IN NMEA In Out 5 RX1 UART0 OUT In Out 2 TX0 UART0 IN In...

Страница 24: ...ure to connect and disconnect external battery on the fly allows developer to evaluate battery power impact on the design of the device The ML8088s operation method WITHOUT battery connected is as fol...

Страница 25: ...the pin 18 IN RST This line is shown as RESET In on the graph This is necessary for the correct selection of the built in microcontroller mode operation operation or the firmware write to build in fla...

Страница 26: ...leaks may include the leaks through the pull down resistors or through the overvoltage protections circuits in case of protection voltage threshold lower than Vdd Maximum leak current is 2 mkA The bre...

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