OceanServer OS5000-S, OS5000-US, OS5000-T, OS5500-USG User Manual
OCEANSERVER COMPASS MANUAL
Digital Compass Users Guide, OS5000 Series
P/N: 90-05000-00
REVISION 3.0
2007,2008 OceanServer Technology, Inc, 151 Martine St, Fall River, MA 02723 USA
www.ocean-server.com
Sales@ocean-server.com or support@ocean-server.com
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OCEANSERVER COMPASS MANUAL
Table of Contents
Introduction to the Tiny Compass Family...........................................................3
OS Compass Design Features ..........................................................................5
Specifications ..................................................................................................... 6
Electrical Connector and pin assignment...........................................................7
Cables................................................................................................................ 8
Communicating with the compass, RS-232 or USB...........................................9
Output Sentence Formats ................................................................................ 10
Format Type 0x01: “$C” format....................................................................... 11
Format Type 0x02: “$OHPR” Sentence ..........................................................12
Format Type 0x03: “$HCHDT” Sentence........................................................12
Format Type 0x04: “comma delimited” Sentence ...........................................12
Output Parameter Selection Table................................................................... 12
Terminal Emulation Programs for Communicating with the Compass ............. 13
Compass Command Summary Table ..............................................................14
Compass Mounting Guidelines ........................................................................16
Calibrating the Compass.................................................................................. 19
Installing Windows Demo Utility ....................................................................... 25
Basic Commands to Configure the OS5000 ....................................................28
Depth or other sensor Connection for OS5500-USG.......................................29
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OCEANSERVER COMPASS MANUAL
Introduction to the Tiny Compass Family
The OceanServer precision 3-Axis Tilt Compensated compass products use
state of the art technology to provide outstanding performance and ease of use in
a low cost design.
The OS5000 family of compasses is a new class of sensor component providing
best in class performance for under $200.00 (USD) in low volume.
Features:
• Precision compass accuracy, 0.5 degrees nominal, 0.1 resolution
• Roll & Pitch full rotation (<1 degree (0-60 degrees))
• Tilt-compensated (electronically gimbaled)
• Tiny size, 1”x1”x0.3”, less than 2 grams weight
• Low Power Consumption, <30ma @3.3V
• Hard and soft-iron compensation routines
• Optional support for a high resolution Depth or Altitude sensor (24
• Serial Interface:
• Rugged design
• ASCII sentence output, in several formats, NMEA checksum
• High Data Update Rate to 40HZ
• Support for True or Magnetic North Output
• Precision components
bit AD)
o RS232, USB or TTL
o Baud rate programmable 4,800 to 115,000 baud
o 10,000 G shock survival
o -20C to 70C operating temperature, -40C to 85C non-op
o 3 Axis magnetic sensors from Honeywell
o 3 Axis Accelerometers from ST Microelectronics
o 24 bit differential Analog to Digital converters from Analog
Devices
o 50 MIPS processor supporting IEEE floating point math
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OCEANSERVER COMPASS MANUAL
OS5000-S -- Signals: RS-232 Levels: 3-Axis Compass, 1” x 1” size with full RS-232
support, single connector on the top side of the module.
OS5000-T -- Signals: TTL Levels: 3-Axis Compass, 1” x 1” size offers TTL only
support, single connector on the topside of the module
OS5000-US -- Signals USB or RS-232: 3-Axis tilt compensated compass, 1” x 1”.
Has both Serial & USB direct interface and has connectors on both sides of the
module.
Always mount compass with 7 pin side 1 up even when using USB connector.
Additional Note: the OS5500-USG version supports pressure measurement for depth
(not shown; utilizes same PCB and connectors as OS5000-US above).
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OCEANSERVER COMPASS MANUAL
OS Compass Design Features
Hardware Variants:
OS5000-S (RS232 Only), OS5000-US (RS232 & USB), OS5000-T (TTL
Only), OS5500-USG (Standard Features of –US Compass with Depth)
Magnetic Sensors:
Honeywell two-axis AMR sensor for X, Y plane sensing
Honeywell z-axis AMR sensor
Accelerometer, tilt sensor:
Three-axis STM accelerometer
Microprocessor:
50 MIPS processor that supports IEEE floating point operations for accurate
tilt compensation.
AD Conversion:
24 bit Sigma-Delta converters with differential inputs
All Models are RoHS Compliant Additional Note:
The OS5000 family of compasses is the next generation of compasses offered by
OceanServer Technology. The table below gives a cross reference to previous
generation parts:
Previous Generation Part Replacement Part Comments
OS1000 OS5000-S Direct Replacement
One part replaces both units
OS1500 and 3500 OS5500-USG
OS3000 OS5000-US Smaller 1’x1’ form factor
depth connected via Serial port
connector
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OCEANSERVER COMPASS MANUAL
Specifications
Parameter Value
Azimuth accuracy 0.6 deg RMS, 0.1 deg resolution
Inclination (pitch and roll)
< 1 deg, 0.1 deg resolution
accuracy
Inclination range +/- 80 degrees, (output for full rotation at decreased
accuracy)
Temperature range -40C to +85C operating,
Humidity: 20-80% RH non-condensing
Shock (Operating) 3,000 G, 0.5 ms, 10,000 G 0.1ms
Data Refresh Rate 0.01 Hz to 40Hz sentence output rate
Size 1” x 1” x 0.3” module
Weight ~ 2 grams
Supply Voltage 3.3V – 5VDC (Will operate with up to 15VDC)
Power consumption 30 ma @3.3V (-S variant)
Serial Data Interface RS-232C levels, TTL and USB 2.0 based on Variant
Sentence Format NMEA0183 Style, four sentence formats, supporting xor
Magnetic Compensation
Routines
35 ma @5V (-US variant, in USB mode)
4800 – 115000 baud, 8 bit, 1 stop, no parity (19200 default)
parity ($HCHDT, $OHPR, $C, comma delimited.
Supports Acceleration & Magnetic sensor output in X,Y,Z
Hard Iron and Soft Iron calibrations supported, note: Soft iron
(V1.4 or later firmware)
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OCEANSERVER COMPASS MANUAL
Electrical Connector and pin assignment
:OS5000-S, OS5000-US (TOP, Side 1 Serial Connector) and OS5000-T 7 pin, Molex
1.25mm connector (Molex: 51021-0700) – Available on. www.Mouser.com
pins and tool to make custom cables.
Additional OS5000-T
Pin Color Signal Description
(TTL version compass
along with
notes)
1 White P-in Pressure Input from Transducer
same
(OS5500-USG only)
2 Black GND Ground same
3 Red Vin-
Unreg
DC Power Input, DC voltage
in the range of 3.3V - 5V
same
4 Orange NC RESERVED - Do Not Connect same
5 Black GND Ground – Use with RS232 same
6 Green Tx RS-232 Transmit (DB9-F pin: 2) Voltage Level TTL, 3V
drive level
7 Blue Rx RS-232 Receive (DB9-F Pin: 3 ) Voltage Level TTL, 3V or
5V tolerant on input
:OS5000-US USB and OS5500-USG, Bottom, side 2, 6 pin, single row header, Molex
1.25mm connector (Molex:
53261-0671) – Available on www.Mouser.com along with
pins and tools to make custom cables
Pin Color Signal Description
Green USB D+
1
White USB D -
2
Red
3
Black
4
5V Regulated USB Power
Ground USB Power
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OCEANSERVER COMPASS MANUAL
Reserved
5
6
Reserved
Must be no connect
Must be no connect
Cables
OceanServer offers a variety of cables, which come with the compass evaluation kits or
can be ordered separately. OS5000-US will auto detect whether the Serial or USB cable
has been plugged in. (No jumper required)
Standard Cables:
19-00061-24, 24" OS5000-S Demo Kit Cable with Serial connection, Pressure and
3.6V battery power connection (picture below) Demo cable provides 3.6V battery
connection. Cable Note: this cable is a quick way to get the compass running for
evaluation. It is highly recommended that you operate the compass from 3.3V since
the module has a linear regulator and any voltage higher than 3.3V heats up the module
and wasting power and heating up the OS5000 module.
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OCEANSERVER COMPASS MANUAL
19-00062-24, 24" OS5000-S/-T Series Pigtail Cable, 7 Pin connector, blunt cut (below)
19-00116-00, Aprox. 6’ OS5000-US Demo Kit Cable with USB to 6 Pin connector
Communicating with the compass, RS-232 or USB
The USB compass requires device drivers to present itself to the system as an asynch
serial port, i.e. COMn: port on Windows. There are drivers supporting MAC OS and
Linux variants on the www.silabs.com web site, CP2101 bridge drivers. We provide
basic drivers and manuals on our web site for windows www.ocean-
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