Navia ML8088s User manual

Navigation Receiver
ML8088s
Evaluation Board
Operating Manual
Version 2.0
St. Petersburg
2013

Evaluation Board of ML8088s Receiver
Operating Manual 2.0
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The Table of Contents
General Information ........................................................................................................................3
Technical Specifications..................................................................................................................5
Location of Indicators and Switching on the Board........................................................................6
Signal Switch of ML8088s Module ................................................................................................7
Components Arrangement on the Evaluation 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 redirection .............................................................................................................17
1PPS ..........................................................................................................................................18
Satellites ....................................................................................................................................18
Messages SET ...........................................................................................................................19
Route log ...................................................................................................................................19
DOP level setting (estimated precision)....................................................................................20
ST-AGPS mode.........................................................................................................................20
Differential mode.......................................................................................................................21
Parameters .................................................................................................................................21
Miscellaneous............................................................................................................................22
Reciever Pinout .............................................................................................................................23
Practical use of the evaluation board.............................................................................................24
Typical connection circuit.............................................................................................................25

Evaluation Board of ML8088s Receiver
Operating Manual 2.0
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General Information
This document is intended for users starting to learn how to operate the multi-channel
navigation system GLONASS/GPS/GALILEO receiver device ML8088s (ML8088sE), and it
contains a general description of the evaluation board with the specified receiver (hereinafter
called "receiver" or "module").
The receiving device of the space navigation system GLONASS/GPS/GALILEO ML8088s
(hereinafter called "receiver" or "module"), which is designed to calculate the current coordinates
and speed of an object in real time in an autonomous and differential modes, the formation of
time stamp in seconds, and the exchange with external equipment via serial ports RS232 and/or
USB port. The principle of the receiver operation is based on parallel reception and processing
via 32 measurement 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 is designed on the basis of the latest specialized chipset
STA8088FG, a part of the family so-called "systems-on-a-chip" STA8088.
The receivers have a high sensitivity, low energy consumption, and a short start time.
Please see Figure 1 for the navigation receiver ML8088s.
Figure 1. The receiver appearance.
The receiver has two capture channels, and 32 channels to track satellite signals, which
allows a simultaneous search for satellite signals of GLONASS and GPS groups.
The receiver allows applying specially prepared information for the primary search for
satellite signals; this information is stored in the Receiver memory, which allows reducing a cold
start time, and, more importantly, make a cold start when receiving weak signals from satellites.
The special information can be prepared both by external sources (and transferred to the

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Operating Manual 2.0
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Receiver by communication channels), and by the receiver itself. In the latter case, no additional
information from external sources is required.
The key (the mark the first output) is a black dot on a white background, and is located in
the lower-left corner of the label, next to the serial number.
The Receiver has a built-in interference reduction, that allows it to operate in conditions of
high interference.
The Receiver operation is performed with the help of special ST GNSS NMEA commands.
This document describes a new sample evaluation board for the receiver ML8088s. The
description 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 evaluation board with the installed receiver.
The evaluation board is designed for familiarizing users with the navigation receiver
ML8088s. The board allows connecting the receiver to a personal computer to examine
information messages sent by the operating receiver. The board allows changing the receiver
settings, as well as saving new software to the built-in flash memory.
The new evaluation board (mini) is different from the previous model, because of the lack of
connector to install module ML8088s, DIP switches, several LEDs and battery backup. These
changes were implemented to simplify the board operation, and to improve its service reliability.

Evaluation Board of ML8088s Receiver
Operating Manual 2.0
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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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Operating Manual 2.0
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Location of Indicators and Switching on the Board
Fig. 3 Location of indicators and switching on the evaluation board
Figure 3 illustrates the location 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 PWR;
- signal LED NMEA signals;
- module signals switch ML8088s;
- module (receiver) ML8088s .
USB
connector
Module power
LED
NMEA
indicator
Connector
for antenna
GNSS status
indicator
Module
signals switch
ML8088s
module

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Operating Manual 2.0
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Signal Switch of ML8088s Module
The switch panel (switch) of the module ML8088s signals is designed to provide users with
the opportunity to connect/disconnect any of the major signals of the module ML8088s to
electronic nodes of a evaluation board. The signal "disabled" from a evaluation board may be left
free (unplugged), or connected to the user's device to accelerate the development of the end
product.
Figure 4. ML8088s module signal switch
X3 signals switch is a set of pins to select connections 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
Comments
PPS
2
Pulse per second
Timestamp signal
RX1
5
Commands to module
Enter commands into the module
TX1
8
NMEA output
NMEA data output
GNSS status
11
Depended on FW
Indication of a solution
Rx0
14
RTCM-104 input
Enter adjustments
Tx0
17
ST debug output
Output of debug information
GND
20
GND
General
V_BAT
23
RTC battery
Real time clock power
VCC_3.3V
26
Module main power
Module main power supply
/RST
29
Module Reset pin
Module hardware restart input
The positions of the jumpers on the contacts (pins) on the switch in various modes is shown in
Table 3.

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Operating Manual 2.0
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Table 3.
Signal
Pin
Jumper position for mode
Work
Program
via UART0
Program
via
UART0
Reset
Signal is
disabled
PPS
2
1-2
2-3
RX1
5
4-5
4-5
5-6
TX1
8
7-8
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 jumper to pins 8-9, turn on the power (connect the USB cable) or momentarily close
contacts 29-30, then return the jumper to pins 7-8, after which start programming.
** - is supplied from outside, optional.
*** - closes momentarily.

Evaluation Board of ML8088s Receiver
Operating Manual 2.0
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Components Arrangement on the Evaluation Board
The evaluation board for navigation receiver ML8088s can be supplied either totally
assembled or as a pre-form for assembly by the user. In this case the user can assemble the board
partially to the extent necessary for the particular use of ML8088s module. For example, the user
can install only the receiver ML8088s module, the capacitors in the module power supply
circuits and the antenna connector, connect the necessary circuits to the target 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 development
process, as one can develop and test the software without making a hardware prototype product.
Fig. 5. Components arrangement on the evaluation board
Microcircuits, modules:
DA1 ADP3338AKC-3.3 SOT223
DA2 ML8088s (ML8088sE)
DA3 FT2232D LQFP48
Capacitors:
C1 27pF smd 0603
C2 27pF smd 0603
C3 27pF smd 0603
C4 100nF smd 0603
C5 100nF smd 0603
C6 47uF tantal smd TYPE B
C7 47uF tantal smd TYPE B
C8 100nF smd 0603
C9 100nF smd 0603
C10 47uF tantal smd TYPE B
C11 100nF smd 0603
Resistors:
R1 27Ω smd 0603
R2 27 Ω smd 0603
R3 1.5k Ω smd 0603
R4 10k Ω smd 0603

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Operating Manual 2.0
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R5 470 Ω smd 0603
R6 10k Ω smd 0603
R7 270 Ω smd 0603
R8 100k Ω smd 0603
R9 270 Ω smd 0603
R10 270 Ω smd 0603
R11 1.5k Ω smd 0603
R12 0 Ω 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 KPK3216VGC smd 1206
Connectors:
X1 USBB-1J Connector USB B
X2 SMA-JR Connector SMA-JR, RF input, antenna connection
X3 PLT 3x10 A set of pins for selecting connections by jumpers