LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
Product name
Description
LS20030
GPS smart antenna module/USB,9600BPS,30x30mm
LS20031
GPS smart antenna module/TTL,9600BPS,30x30mm
LS20032
GPS smart antenna module/RS232,9600BPS,30x30mm
LS20033
GPS smart antenna module/TTL,9600BPS,35x16mm
Version
1.3
Datasheet of GPS smart antenna module, LS20030~3
1
Introduction
LS20030~3 series products are complete GPS smart antenna receivers, including an
embedded antenna and GPS receiver circuits, designed for a broad spectrum of OEM system
applications. The product is based on the proven technology found in LOCOSYS 66 channel GPS
SMD type receivers MC-1513 that use MediaTek chip solution. The GPS smart antenna will acquire
up to 66 satellites at a time while providing fast time-to-first-fix, one-second navigation update and
low power consumption. It can provide you with superior sensitivity and performance even in urban canyon
and dense foliage environment. Its far-reaching capability meets the sensitivity requirements of car
navigation as well as other location-based applications.
This module supports hybrid ephemeris prediction to achieve faster cold start. One is self-generated
ephemeris prediction that is no need of both network assistance and host CPU’s intervention. This is valid for
up to 3 days and updates automatically from time to time when GPS module is powered on and satellites are
available. The other is server-generated ephemeris prediction that gets from an internet server. This is valid for
up to 14 days. Both ephemeris predictions are stored in the on-board flash memory and perform a cold start
time less than 15 seconds.
Page 1/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
2
Features
3
MediaTek high sensitivity solution
Support 66-channel GPS
Low power consumption
Fast TTFF at low signal level
Built-in 12 multi-tone active interference canceller
Free hybrid ephemeris prediction to achieve faster cold start
Built-in data logger
Up to 10 Hz update rate
Capable of SBAS (WAAS, EGNOS, MSAS, GAGAN)
Support Japan QZSS
Indoor and outdoor multi-path detection and compensation
Build-in micro battery to reserve system data for rapid satellite acquisition (not in LS20033)
LED indicator for GPS fix or not fix (not in LS20033)
Application
Personal positioning and navigation
Automotive navigation
Marine navigation
Fig 3-1 System block diagram of LS20030
Page 2/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
Fig 3-2 System block diagram of LS20031
Fig 3-3 System block diagram of LS20032
Fig 3-4 System block diagram of LS20033
Page 3/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
4
GPS receiver
Chip
MediaTek MT3339
Frequency
L1 1575.42MHz, C/A code
Channels
Support 66 channels (22 Tracking, 66 Acquisition)
Update rate
1Hz default, up to 10Hz
Hot start (Open Sky)
Acquisition Time
< 1s (typical)
32s (typical) without AGPS
Cold Start (Open Sky)
<15s (typical) with AGPS (hybrid ephemeris prediction)
Position Accuracy
Autonomous
3m (2D RMS)
SBAS
2.5m (depends on accuracy of correction data)
Datum
WGS-84 (default)
Max. Altitude
< 50,000 m
Max. Velocity
< 515 m/s
Protocol Support
NMEA 0183 ver 3.01
9600 bps(1), 8 data bits, no parity, 1 stop bits (default)
1Hz: GGA, GLL, GSA, GSV, RMC, VTG
Note 1: Both baud rate and output message rate are configurable to be factory default.
5
Software interface
5.1 NMEA output message
Table 5.1-1 NMEA output message
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
GGA--- Global Positioning System Fixed Data
Table 5.1-2 contains the values for the following example:
$GPGGA,053740.000,2503.6319,N,12136.0099,E,1,08,1.1,63.8,M,15.2,M,,0000*64
Table5.1- 2 GGA Data Format
Name
Example
Units
Description
Message ID
$GPGGA
GGA protocol header
UTC Time
053740.000
hhmmss.sss
Latitude
2503.6319
ddmm.mmmm
Page 4/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
N/S indicator
N
N=north or S=south
Longitude
12136.0099
dddmm.mmmm
E/W Indicator
E
E=east or W=west
Position Fix Indicator
1
See Table 5.1-3
Satellites Used
08
Range 0 to 12
HDOP
1.1
Horizontal Dilution of Precision
MSL Altitude
63.8
mters
Units
M
mters
Geoid Separation
15.2
mters
Units
M
mters
Age of Diff. Corr.
second
Diff. Ref. Station ID
0000
Checksum
*64
<CR> <LF>
Null fields when DGPS is not used
End of message termination
Table 5.1-3 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
6
Dead Reckoning Mode, fix valid
GLL--- Geographic Position – Latitude/Longitude
Table 5.1-4 contains the values for the following example:
$GPGLL,2503.6319,N,12136.0099,E,053740.000,A,A*52
Table 5.1-4 GLL Data Format
Name
Example
Units
Description
Message ID
$GPGLL
GLL protocol header
Latitude
2503.6319
ddmm.mmmm
N/S indicator
N
N=north or S=south
Longitude
12136.0099
dddmm.mmmm
E/W indicator
E
E=east or W=west
UTC Time
053740.000
hhmmss.sss
Status
A
A=data valid or V=data not valid
Mode
A
A=autonomous, D=DGPS, E=DR, N=Data not valid,
R=Coarse Position, S=Simulator
Page 5/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
Checksum
*52
<CR> <LF>
End of message termination
GSA---GNSS DOP and Active Satellites
Table 5.1-5 contains the values for the following example:
$GPGSA,A,3,24,07,17,11,28,08,20,04,,,,,2.0,1.1,1.7*35
Table 5.1-5 GSA Data Format
Name
Example
Units
Description
Message ID
$GPGSA
GSA protocol header
Mode 1
A
See Table 5.1-6
Mode 2
3
See Table 5.1-7
ID of satellite used
24
Sv on Channel 1
ID of satellite used
07
Sv on Channel 2
….
….
ID of satellite used
Sv on Channel 12
PDOP
2.0
Position Dilution of Precision
HDOP
1.1
Horizontal Dilution of Precision
VDOP
1.7
Vertical Dilution of Precision
Checksum
*35
<CR> <LF>
End of message termination
Table 5.1-6 Mode 1
Value
Description
M
Manual- forced to operate in 2D or 3D mode
A
Automatic-allowed to automatically switch 2D/3D
Table 5.1-7 Mode 2
Value
Description
1
Fix not available
2
2D
3
3D
GSV---GNSS Satellites in View
Table 5.1-8 contains the values for the following example:
$GPGSV,3,1,12,28,81,285,42,24,67,302,46,31,54,354,,20,51,077,46*73
$GPGSV,3,2,12,17,41,328,45,07,32,315,45,04,31,250,40,11,25,046,41*75
$GPGSV,3,3,12,08,22,214,38,27,08,190,16,19,05,092,33,23,04,127,*7B
Table 5.1-8 GSV Data Format
Name
Example
Units
Description
Page 6/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
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Message ID
$GPGSV
GSV protocol header
Total number of messages1 3
Message number
1
Range 1 to 4
1
Range 1 to 4
Satellites in view
12
Satellite ID
28
Elevation
81
degrees
Channel 1 (Range 00 to 90)
Azimuth
285
degrees
Channel 1 (Range 000 to 359)
SNR (C/No)
42
dB-Hz
Channel 1 (Range 00 to 99, null when not tracking)
Satellite ID
20
Elevation
51
degrees
Channel 4 (Range 00 to 90)
Azimuth
077
degrees
Channel 4 (Range 000 to 359)
SNR (C/No)
46
dB-Hz
Channel 4 (Range 00 to 99, null when not tracking)
Checksum
*73
Channel 1 (Range 01 to 196)
Channel 4 (Range 01 to 32)
<CR> <LF>
End of message termination
1. Depending on the number of satellites tracked multiple messages of GSV data may be required.
RMC---Recommended Minimum Specific GNSS Data
Table 5.1-9 contains the values for the following example:
$GPRMC,053740.000,A,2503.6319,N,12136.0099,E,2.69,79.65,100106,,,A*53
Table 5.1-9 RMC Data Format
Name
Example
Message ID
$GPRMC
RMC protocol header
UTC Time
053740.000
hhmmss.sss
Status
A
A=data valid or V=data not valid
Latitude
2503.6319
ddmm.mmmm
N/S Indicator
N
N=north or S=south
Longitude
12136.0099
dddmm.mmmm
E/W Indicator
E
E=east or W=west
Speed over ground
2.69
knots
Course over ground
79.65
degrees
Date
100106
Description
True
ddmmyy
degrees
Magnetic variation
Variation sense
E=east or W=west (Not shown)
Mode
A
Checksum
*53
<CR> <LF>
Units
A=autonomous, D=DGPS, E=DR, N=Data not valid,
R=Coarse Position, S=Simulator
End of message termination
Page 7/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
VTG---Course Over Ground and Ground Speed
Table 5.1-10 contains the values for the following example:
$GPVTG,79.65,T,,M,2.69,N,5.0,K,A*38
Table 5.1-10 VTG Data Format
Name
Example
Message ID
$GPVTG
Course over ground
79.65
Reference
T
Units
VTG protocol header
degrees
Reference
M
Speed over ground
2.69
Units
N
Speed over ground
5.0
Units
K
Mode
A
Checksum
*38
Measured heading
True
degrees
Course over ground
Description
Measured heading
Magnetic
knots
Measured speed
Knots
km/hr
Measured speed
Kilometer per hour
A=autonomous, D=DGPS, E=DR, N=Data not valid,
R=Coarse Position, S=Simulator
<CR> <LF>
End of message termination
5.2 Proprietary NMEA input message
Please refer to MTK proprietary message.
5.3 Examples to configure the power mode of GPS module
The GPS module supports different power modes that user can configure by issuing
software commands.
5.3.1 Standby mode
User can issue software command to make GPS module go into standby mode that
consumes less than 200uA current. GPS module will be awaked when receiving any byte.
The following flow chart is an example to make GPS module go into standby mode and
then wake up.
Page 8/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
Start
GPS module is powered on
and in normal operation mode
Change GPS to
standby mode
Wake up
GPS module
unsigned char StandbyMode[] = {"$PMTK161,0*28\x0D\x0A"};
Yes
Issue any byte to
wake up GPS module
No
GPS module will return {"$PMTK010,002*2D\x0D\x0A"}
and start normal operation.
End
5.3.2 Periodic mode
When GPS module is commanded to periodic mode, it will be in operation and
standby periodically. Its status of power consumption is as below chart.
The following flow chart is an example to make GPS module go into periodic mode
Page 9/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
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℡ 886-2-8698-3698
886-2-8698-3699
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and then back to normal operation mode.
Start
GPS module is powered on
Change GPS to periodic mode with
3000ms on and 12000ms standby
if position fix is available, otherwise
(18000, 72000) ms will be applied.
unsigned char PeriodicMode[] =
{"$PMTK225,2,3000,12000,18000,72000*15\x0D\x0A"};
Note: minimum on time is 2000ms.
maximum standby time is 518400000ms (6 days)
GPS module will return message
"$PMTK001,225,3*35\x0D\x0A"
if command is accepted.
Set GPS to normal
operation mode?
Yes
GPS is in
standby now
Yes
Issue any byte to GPS
and wait it awake
No
No
Issue command of
normal operation mode
unsigned char NormalMode[] =
{"$PMTK225,0*2B\x0D\x0A"};
GPS module will return message
"$PMTK001,225,3*35\x0D\x0A"
if command is accepted.
End
GPS is in periodic mode
End
GPS is in normal mode
5.3.3 AlwaysLocateTM mode
AlwaysLocateTM is an intelligent controller of periodic mode. Depending on the
environment and motion conditions, GPS module can adaptively adjust working/standby
time to achieve balance of positioning accuracy and power consumption. In this mode, the
host CPU does not need to control GPS module until the host CPU needs the GPS position
data. The following flow chart is an example to make GPS module go into
AlwaysLocateTm mode and then back to normal operation mode.
Note: AlwaysLocateTM is a trade mark of MTK.
Page 10/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
Start
GPS module is powered on
Change GPS to
AlwaysLocate mode
unsigned char AlwaysLocateMode[] =
{"$PMTK225,8*23\x0D\x0A"};
Yes
GPS module will return message
"$PMTK001,225,3*35\x0D\x0A"
if command is accepted.
Request a GPS
position data
No
Yes
Issue any byte to get
GPS position data
No
Set GPS to normal
operation mode?
Change GPS back to
AlwaysLocate mode
Yes
Issue any byte to GPS
and wait it awake
No
Set GPS to normal
operation mode
unsigned char NormalMode[] =
{"$PMTK225,0*2B\x0D\x0A"};
End
GPS is in normal mode
5.4 Data logger
The GPS module has internal flash memory for logging GPS data. The configurations
include time interval, distance, speed, logging mode, and … etc. For more information, please
Page 11/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
contact us.
5.5 Examples to configure the update rate of GPS module
The GPS module supports up to 10Hz update rate that user can configure by issuing
software commands. Note that the configurations by software commands are stored in the
battery-backed SRAM that is powered through VBACKUP pin. Once it drains out, the
default/factory settings will be applied.
Due to the transmitting capacity per second of the current baud rate, GPS module has to be
changed to higher baud rate for high update rate of position fix. The user can use the following
software commands to change baud rate.
Baud rate
Software command
Factory default
$PMTK251,0*28<CR><LF>
4800
$PMTK251,4800*14<CR><LF>
9600
$PMTK251,9600*17<CR><LF>
19200
$PMTK251,19200*22<CR><LF>
38400
$PMTK251,38400*27<CR><LF>
57600
$PMTK251,57600*2C<CR><LF>
115200
$PMTK251,115200*1F<CR><LF>
Note: <CR> means Carriage Return, i.e. 0x0D in hexadecimal. <LF> means Line Feed, i.e. 0x0A in
hexadecimal.
If the user does not want to change baud rate, you can reduce the output NMEA sentences
by the following software commands.
NMEA sentence
Software command
Factory default
$PMTK314,-1*04<CR><LF>
Only GLL at 1Hz
$PMTK314,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29<CR><LF>
Only RMC at 1Hz
$PMTK314,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29<CR><LF>
Only VTG at 1Hz
$PMTK314,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29<CR><LF>
Only GGA at 1Hz
$PMTK314,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29<CR><LF>
Only GSA at 1Hz
$PMTK314,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29<CR><LF>
Only GSV at 1Hz
$PMTK314,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0*29<CR><LF>
Only ZDA at 1Hz
$PMTK314,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0*29<CR><LF>
RMC, GGA, GSA
at 1Hz and GSV at $PMTK314,0,1,0,1,1,5,0,0,0,0,0,0,0,0,0,0,0,0,0*2C<CR><LF>
0.2Hz
If the command is correct and executed, GPS module will output message
$PMTK001,314,3*36<CR><LF>
Page 12/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
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After the GPS module is changed to higher baud rate or reduced NMEA sentence, the user
can configure it to high update rate of position fix by the following commands.
Interval of position fix
(1)
Software command
Every 100ms (10Hz)
$PMTK220,100*2F<CR><LF>
Every 200ms (5Hz)
$PMTK220,200*2C<CR><LF>
Every 500ms (2Hz)
$PMTK220,500*2B<CR><LF>
Every 1000ms (1Hz)
$PMTK220,1000*1F<CR><LF>
Every 2000ms (0.5Hz)(2)
$PMTK220,2000*1C<CR><LF>
If the command is correct and executed, GPS module will
output message $PMTK001,220,3*30<CR><LF>
Note 1: The minimum interval of position fix is 100ms, i.e. the maximum update rate is 10Hz.
Note 2: The current consumption is the same with the update rate of 1Hz.
6
LED indicator
The red LED is an indicator of GPS positioning status. In continuous power mode, it flashes once
per second when position is fixed. Otherwise it is off. The timing in detail is as below.
Fig 6.1 LED indicator of GPS positioning status
Page 13/20
© 2006 LOCOSYS Technology Inc.
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20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
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℡ 886-2-8698-3698
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7
Pin assignment and descriptions
Fig 7.1 Pin assignment of LS20030, LS20031 and LS20032
Fig 7.2 Pin assignment of LS20033
LS20030
Pin # Name
Type Description
1
VBUS
P
USB power input
2
D-
D- line
3
D+
D+ line
4
GND
P
Ground
5
Shield
P
Ground
LS20031
Pin # Name
Type Description
1
VCC
P
Power input
2
RX
I
Data input (TTL level)
3
TX
O
Data output (TTL level)
4
GND
P
Ground
Page 14/20
© 2006 LOCOSYS Technology Inc.
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20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
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℡ 886-2-8698-3698
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5
GND
Ground
LS20032
Pin # Name
P
Type Description
1
VCC
P
Power input
2
RX
I
Data input (RS232 level)
3
TX
O
Data output (RS232 level)
4
GND
P
Ground
5
GND
P
Ground
LS20033
Pin # Name
Type Description
1
VCC
P
Power input
2
GND
P
Ground
3
TX
O
Data output (TTL level)
4
RX
I
Data input (TTL level)
5
GPS LED
O
LED indicator. See Fig 6.1
6
VBACKUP
P
Backup battery supply voltage
Page 15/20
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LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
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℡ 886-2-8698-3698
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8
DC & Temperature characteristics
8.1 DC Electrical characteristics
Parameter
Input voltage
Symbol
VCC
Input Backup Battery Voltage VBACKUP
Input current
High Level Input Voltage
Icc
VI H
Product
Min.
Typ.
Max.
LS20030
4.75
5
5.25
LS20031
LS20032
LS20033
3
4
3
3.3
5
3.3
4.3
6
4.3
LS20033
2
4.3
Units
V
V
(1)
LS20030
LS20031
LS20032
22
13(1)
19(1)
LS20033
16(1)
LS20031
LS20033
mA
2.0
3.6
V
Low Level Input Voltage
VI L
LS20031
LS20033
-0.3
0.8
V
High Level Input Current
IIH
LS20031
LS20033
-1
1
uA
Low Level Input Current
IIL
LS20031
LS20033
-1
1
uA
High Level Output Voltage
VOH
LS20031
LS20033
2.4
Low Level Output Voltage
VOL
LS20031
LS20033
High Level Output Current
IOH
Low Level Output Current
IOL
1.
V
0.4
LS20031
LS20033
LS20031
LS20033
V
2
mA
2
mA
Measured when position fix (1Hz) is available and the function of self-generated ephemeris prediction is inactive.
8.2 Temperature characteristics
Parameter
Symbol
Product
Min.
Typ.
Max.
Operating Temperature
Topr
LS20030~LS20033
-40
-
85
Units
℃
Storage Temperature
Tstg
LS20030~LS20033
-40
25
85
℃
Page 16/20
© 2006 LOCOSYS Technology Inc.
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Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
9
Mechanical specification
LS20030, LS20031, LS20032
Page 17/20
© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
LS20033
The 6-pin connector is belonging to Wafer series connector and its pitch is 1.0mm. There is a
supplier called Cherng Weei Technology Corp. http://www.cwe.com.tw and its part number is
CSH-W10R-06TR for you reference.
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© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
Document change list
Revision 1.0
First release on Oct. 25, 2007.
Revision 1.0 to Revision 1.1 (July 20, 2009)
Changed GPS chip from MT3318 to MT3329 on page 3. The units with date code after 0924
(on MC-1513) will be changed to new chip.
Changed the picture of LS20033 on page 1.
Added “Support AGPS” on page 1.
Changed Fig 3-1 on page 2.
Changed channels from 32 to 66 on page 3
Changed update rate from “up to 5Hz” to “up to 10Hz” on page 3.
Changed hot start time from “2s (typical)” to “<2s (typical)” on page 3.
Changed cold start time from 36s to 35s on page 3.
Added “Note 1” on page 4.
Changed Input Battery Backup Voltage from “1.1V~6.0V” to “2.0V~4.3V” on page 10.
Changed typical current of LS20030 from 47mA to 29mA on page 10.
Changed typical current of LS20031 from 41mA to 29mA on page 10.
Changed typical current of LS20032 from 46mA to 34mA on page 10.
Changed typical current of LS20033 from 44mA to 32mA on page 10.
Changed operation temperature of LS20033 from “-20 ~ 65℃” to “-30 ~ 85℃” on page 11.
Changed storage temperature of LS20033 from “-30 ~ 75℃” to “-40 ~ 85℃” on page 11.
Revision 1.1 to Revision 1.2 (July 28, 2009)
Changed the picture of LS20030 on page 1.
Revision 1.2 to Revision 1.3 (January 30, 2012)
Changed GPS chip from MT3329 to MT3339 on page 4. The units with a capital T after the
date code on the metal shield have been changed to new chip.
Changed the picture of LS20030 on page 1.
Added the description of hybrid ephemeris prediction in the section 1.
Added several new features in the section 2.
Changed Fig 3-1 on page 2.
Changed hot start time from < 2s to < 1s on page 4.
Changed cold start time from 35s to 32s on page 4.
Changed Max. Altitude from 18,000m to 50,000m on page 4.
Changed the range of satellite ID in GSV message from 32 to 196 on page 7.
Added “N = data not valid, R=Coarse Position, S=Simulator” in GLL, RMC and VTG message.
Added section 5.3, 5.4 and 5.5.
Changed maximum input voltage of LS20031 and LS20033 from 4.2V to 4.3V in the section
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© 2006 LOCOSYS Technology Inc.
LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
8.1.
Changed typical current of LS20030 from 29mA to 22mA in the section 8.1.
Changed typical current of LS20031 from 29mA to 13mA in the section 8.1.
Changed typical current of LS20032 from 34mA to 19mA in the section 8.1.
Changed typical current of LS20033 from 32mA to 16mA in the section 8.1.
Changed the minimum operation temperature from -30℃ to -40℃ in the section 8.2
Added some dimensions in the section 9.
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© 2006 LOCOSYS Technology Inc.