DM1103

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1. SYSTEM OVERVIEW

1.1 General Description

DM1103 is a high-performance mini PCIe-form GNSS module based on Allystar TAU1103 which is with the state-of-the-art Allystar Cynosure III Lite architecture. It has a Full-Mini size and Half-mini size.

It supports global civil navigation systems, including GPS, BDS, GLONASS, Galileo, and QZSS.

Featured with SAW and LNA, it achieves high positioning accuracy and short TTFF, especially in a harsh urban environment.

The standard mini PCIe interface makes these modules easy to integrate into the laptop, industrial PC, and other applications.

DM1103

1.2 Features

  • Supports GPS, BDS, Galileo, GLONASS, and QZSS systems Built-in LNA & SAW for better sensitivity
  • Supports A-GNSS
  • Supports geo-fence function
  • Ultra-low power consumption around 13mA in tracking mode
  • Supports antenna supervision
P/N Option GPS/QZSS BDS GLONASS Galileo
L1 C/A B1I L1 E1
DM1103-P0 Full-mini PCIe -
DM1103-P1 Half-mini PCIe -

1.3 Block diagram

DM1103 block diagram

1.4 Specifications

Parameters Specification
GNSS tracking channels 72 channels
GPS/QZSS: L1C/A
Galileo: E1
GLONASS: L1OF
Updating rate 1 Hz (Default), up to 5 Hz
Position accuracy GNSS < 1.5 m CEP @ Open Sky
Velocity & Time accuracy GNSS 0.1 m/s CEP
1PPS 20ns
Time to First Fix(TTFF) Hot start 1 s
Cold start 28 s
Sensitivity Cold start -149 dBm
Reacquisition -159 dBm
Tracking -163 dBm
Power supply VDD 2.0-3.63 V, Typical 3.3 V
Power consumption Operating mode Acquisition 15mA @3.3V
Tracking 13mA @3.3V
Standby mode 10uA
Interface USB
PPS signal accuracy Typical ±1ms for PPS through USB [1]
Protocol NMEA 0183 Protocol Ver.3.01/4.00 (Default)/4.10
Operating limit Velocity 515 m/s
Altitude 18,000 m
Temperature Operating temperature -40०C ~ +85०C
Storage temperature
Certification RoHS & REACH
Weight and size 5.3g, 50.95*30*3.5mm

[1]: get PPS by checking DCD. PPS accuracy is related to USB poll interval.

2. PIN DESCRIPTION

2.1 Detailed Pin Descriptions

Pin# Name Pin# Name
1-3 NC 4 GND
5-8 NC 9 GND
10-14 NC 15 GND
16-17 NC 18 GND
19 NC 20 W_DISABLE#
21 GND 22-25 NC
26-27 GND 28 NC
29 GND 30-33 NC
34-35 GND 36 USB_D-
37 GND 38 USB_D+
39 NC 40 GND
41-42 NC 43 GND
44-49 NC 50 GND
51 NC 52 +3.3Vaux

3. MECHANICAL SPECIFICATION

The dimension and pin definition is compliant with PCI Express Mini Card Revision 1.2.

the following pictures is from “PCI Express Mini Card Revision 1.2”.

Full size dimessions

DM1103 mechanical specifications

Half size dimessions

DM1103 mechanical specifications(half-size)

4. Others

4.1 Exclusive Binary Message

The common exclusive commands show as bellows:

Command description Software[command][1]
Perform a Cold start F1 D9 06 40 01 00 01 48 22
Perform a Warm start F1 D9 06 40 01 00 02 49 23
Perform a Hot start F1 D9 06 40 01 00 03 4A 24
Perform a Factory reset F1 D9 06 09 08 00 02 00 00 00 FF FF FF FF 15 01
UART configures as 115200bps F1 D9 06 00 08 00 00 00 00 00 00 C2 01 00 D1 E0
UART configures as 9600bps F1 D9 06 00 08 00 00 00 00 00 80 25 00 00 B3 07
Enable ZDA message F1 D9 06 01 03 00 F0 07 01 02 1E
Disable ZDA message F1 D9 06 01 03 00 F0 07 00 01 1D
Navigate with GPS only F1 D9 06 0C 04 00 01 00 00 00 17 A0
Navigate with BeiDou system only F1 D9 06 0C 04 00 04 00 00 00 1A AC
Navigate with GPS+ BeiDou system F1 D9 06 0C 04 00 05 00 00 00 1B B0
Query firmware version[1] F1 D9 0A 04 00 00 0E 34