Holux GM-82 User manual

GM-82 GPS Receiver
 Features
 SiRF Star II/LP (low power) chipset with embedded ARM7TDMI CPU available for
customized applications in firmware。
 12 parallel satellite-tracking channels for fast acquisition and reacquisition。
 High speed signal acquisition using 1920 time/frequency search channels。
 Built-in WAAS/EGNOS Demodulator。
 Low power consumption with Advanced Trickle-Power and Push-To-Fix mode。。
 Optional Rechargeable battery for memory and RTC backup and for fast Time to
First Fix(TTFF)。
 Support NMEA0183 v2.2 data protocol and SiRF binary code。
 Enhanced algorithms -SnapLock and SnapStart provide superior navigation
performance in urban, canyon and foliage environments。
 For Car Navigation , Marine Navigation ,Fleet Management ,AVL and
Location-Based Services , Auto Pilot ,Personal Navigation or touring devices,
Tracking devices/systems and Mapping devices application。

 Specifications
Snap Start < 3 sec (at < 25 minutes off period ).
Hot Start 8 sec(typ).
Warm Start 38 sec(typ).
Cold Start 45 sec(typ).
Satellite Reacquisition
Time Accuracy 100 ms
Channels 12 satellites
Position Accuracy 25m CEP without SA
Receiver L1, C/A code
Protocol NMEA V2.2, 4800, 8, N, 1 or SiRF Binary
Maximum Altitude < 18,000 M (60,000 feet)
Maximum Velocity < 515 M (700 節)
Max. Update Rate 1 Hz
RF Connector MCX or SMA
Dimension 40mm(L)x50mm(w)x7.6mm(H)
Weight 18g
Firmware Upgrade Flash EPROM field programming software
available
Time Mark Output 1 pulse/sec, aligned with GPS time +/ -0.1
usec
Operating
Temperature -40 to +85
Storage Temperature -45 to +100
Operating Humidity 5% to 95%, No Condensing
 Electrical specifications：
Less than 80mA (without antenna )。

Electrical Output specification：
 Interface
1、RS-232。
2、CMOS TTL Level。
3、5 GPIO
 NMEA output protocol:
Baud rate: 4800 bps
Data bit: 8
Parity: N
Stop bit: 1
Output format: GGA, GSA, GSV, MC.(VTG , GLL, RMS option)
 Output terminal and definition
20 Pin header (2.0mm Pitch).

J1 connector pin definition:
Pin Pin Name Function description Pin Pin Name Function description
1 NC No function 11 TXA Serial Data output A
2 VCC_5V +5V DC power input 12 RXA Serial Data input A
3 VBAT Backup Battery (2.5–3.3V) 13 GND Ground
4 NC No function 14 TXB Serial Data output B
5 PBRESEN Reset input, Active low 15 RXB Serial Data input B
6 GPIO1 General purpose I/O pin 16 GND Ground
7 GPIO2 General purpose I/O pin 17 GPIO5 General purpose I/O pin
8 GPIO3 General purpose I/O pin 18 GND Ground
9 GPIO4 General purpose I/O pin 19 TIMEMARK 1PPS Time mark output
10 GND Ground 20 NC No function
 Products List
Output
Level
Back-up battery
Type
Input
Power
Power
Saving
Connector
Type
Model No.
TTL or RS-232 Lithium No Volt. MCX SMA
GM-82-A0X-5 RS-232 Y - 5 Y Y -
GM-82-A0X-3 RS-232 Y - 3 Y Y -
GM-82-A0A-5 RS-232 Y - 5 Y - Y
GM-82-A0A-3 RS-232 Y - 3 Y - Y
GM-82-A1X-5 RS-232 - Y 5 - Y -
GM-82-A1X-3 RS-232 - Y 3 - Y -
GM-82-A1A-5 RS-232 - Y 5 - - Y
GM-82-A1A-3 RS-232 - Y 3 - - Y
GM-82-T0X-5 TTL Y 5 Y Y -
GM-82-T0X-3 TTL Y 3 Y Y -
GM-82-T0A-5 TTL Y 5 Y - Y
GM-82-T0A-3 TTL Y 3 Y - Y
GM-82-T1X-5 TTL - Y 5 - Y -
GM-82-T1X-3 TTL - Y 3 - Y -
GM-82-T1A-5 TTL - Y 5 - - Y
GM-82-T1A-3 TTL - Y 3 - - Y