- 1 -

Only for USG

GLOBALSAT GPS Receiver

Hardware Specification

Product No : MR-350 S4

User Manual Version 1.2

GlobalSat WorldCom Corporation

16F., No. 186, Jian-Yi Road, Chung-Ho City, Taipei

Hsien 235, Taiwan

Tel: 886-2-8226-3799 Fax: 886-2-8226-3899

E-mail : service@globalsat.com.tw

Website: www.globalsat.com.tw

Issue Date

2013/11/27

APPR

Ray

CHECK

PREPARE

Mason

MR-350 S4

High Performance GPS Receiver

- 2 -

Product Description

The MR-350 S4 includes an embedded receiver and an antenna. This receiver up to 48

tracking verification channels while providing fast time-to-first-fix, precise position updates, low

power consumption, and adds the capability of Wide Area Augmentation System (WASS). The

MR-350 S4 design uses the latest technology and high-level circuit integration to achieve superior

performance while minimizing space and power requirements. All critical components of the

system include the RF/IF receiver hardware and the digital baseband are designed and

manufactured by GlobalSat to ensure the quality and capability of the GPS.

The MR-350 S4 can be utilized in a variety of applications that require a permanent mounting

configuration. With bulkhead (through-hole) mounting and a low-profile housing, the MR-350 is

completely self-contained and waterproof. Typical application can include marine environments,

aviation, commercial use such as fire truck, police cars and utility vehicles and buses. The

extended 4.5 meters cable allows for easy routing to your equipment behind, headliners and side

panels and terminates to a custom PS/2 connector.

Product Features

 SiRF Star IV high performance GPS Chipset

 Very high sensitivity (Tracking Sensitivity: chipset -163dBm )

 Extremely fast TTFF (Time To First Fix) at low signal level

 Support NMEA 0183 V3.0 (GGA, GSA, GSV, RMC)

 Build in Super Cap to reserve system data for rapid satellite acquisition

 Build in patch antenna

 Support RS-232(baud rate 4800) interface

 Support Wide Area Augmentation System(WASS)

 Waterproof IPX7

Product Specification

 General

Chipset Sirf StarIV

Frequency L1, 1575.42MHz

CA Code 1.023 MHz

Channels 48 track verification channels

Sensitivity -163 dBm

 Accuracy

H-Position Autonomous <2.5m

Speed <0.01m/s

Heading <0.01°

MR-350 S4

High Performance GPS Receiver

- 3 -

 Datum

Default WGS-84

 Acquisition Time

Reacquisition 0.1 sec., average

Hot start 1 sec., average

Warm start 35 sec., average

Cold start 35 sec., average

 Dynamic Conditions

Altitude 18,000 meters (60,000 feet) max

Velocity 515 meters / second (1000 knots) max

Acceleration Less than 4g

 Electrical Characteristics

Main power input 4.5V ~ 6.5V DC input

Power consumption 80mA

Operating temperature -40℃ to +85℃

 Protocol

Baud rate 4800 bps

Output message GGA, GSA, GSV, RMC

 Physical Characteristics

Dimension 62mm diameter, 21mm height

Cable length 4.5 meters

Pin Assignment

MR-350 S4

High Performance GPS Receiver

- 4 -

Pin Description

P/N Define Description

1 Ground Ground

2 VCC This pin is the main DC supply for a 4.5V ~6.5 DC input power.

3 1PPS This pin output signal based on firmware setting.

4 RX This pin is the main receive channel for receiving software commands to the

GPS receiver from SiRFdemo software or from user written software.

5 TX This is the main transmit channel for outputting navigation and measurement

data to user’s navigation software or user written software.

6 NC Just NC.

MR-350 S4

High Performance GPS Receiver

- 5 -

Reversion history

Reversion Date Name Status / Comments

V1.0 2013/3/27 Mason initial version

V1.1 2013/11/25

Mason Modify Pin assignment picture

V1.2 2013/11/27

Mason Modify 1PPS description