DMK 11A & 11A GPS Owners Manual
1 Table of Contents Section I Description of DMK 11A & 11A-GPS 1.1 Introduction 1.2 Background 1.3 Infrastructure Connection 1.4 Components 1.5 Input Protocols 1.6 Configuration Memory 1.7 Power Supply 1.8 Wiring Connections 1.9 LEDs 1.10 Transmitting Data Section II Installing the DMK Box 2.1 Location 2.2 Antenna Mounting 2.3 Electrical Power to the DMK Box 2.4 Instrument Connections Section III Connecting your iOS Device to the DMK 11A & Configuring the WiFi Settings 3.1 First Time Connection 3.
SECTION I DESCRIPTION of DMK 11A & 11A-GPS DMK-11A Hardware 1.1 Introduction. Congratulations on your purchase of a DMK 11A or DMK 11AGPS (GPS enabled) wireless device. The DMK-11A is a wireless gateway that transmits marine electronics data from a variety of marine instruments via Wi-Fi (802.11b) to devices, including laptop and desktop personal computers and a range of compact portable devices including Apple iOS devices.
- Optional GPS module with external antenna connector (-GPS option only) A 16megabyte EEPROM for storing data packets for later transfer over Wi-Fi Figure 1-1 The DMK 11A-GPS 1.5 Input Protocols, The three protocols of the DMK 11A (NMEA2000, NMEA0183,and Sea Talk) support virtually all existing marine electronics instrumentation. The DMK 11A has been designed to support data transfer on all three protocols simultaneously so that it is possible to serve multiple instrument types with a single DMK 11A. 1.
Wire Color Function 1 Brown DC In (6-24VDC) 2 Red Seatalk Receive/Transmit 3 Orange NMEA 0183 In (Port A) 4 Yellow NMEA 0183 Out (Port A) 5 Green NMEA 0183 In (Port B) 6 Blue OnBrdGPSOut (4800 baud) (DMK 11A-GPS only) 7 Purple NMEA2000 H 8 Gray NMEA 2000 L 9 White Ground 10 Black Ground Table 1-1 Connector Ribbon Color Key 1.9 LEDs.
SECTION II Installing the DMK Box 2.1 Location. Mount the DMK box near your vessel’s instruments and a source of DC electrical power. It should be in an interior (dry) location away from extreme temperatures and vibration. The DMK box should NOT be located in an engine room or other location enclosed in metal. The DMK box should be located at least eight inches away from places people sit or sleep. 2.2 Antenna. Mount the DMK box with the antenna pointing up (near vertical).
Section III Connecting Your iOS Wireless Device to the DMK 11A & Configuring the WiFi Settings 3.1 First Time Connection The first time you connect your mobile device to a DMK Box you must perform the following configuration in order for your mobile device to connect automatically each time you return onboard and power on your instruments. Open “Settings” on your device. Locate available WI-FI Networks. Choose “dmkyacht”.
3.2 Adjust the IP info Set Auto-Join to “ON”. Set IP Address to “Static”. Set IP Address to “192.168.1.2’ Set Subnet Mask to “255.255.255.0”. Set Router to “192.168.1.1”. You now should have data packets streaming to your iOS device. You can confirm that packets are arriving by opening the DMK App and looking at the Packet Log page. Also this device is now configured to connect and receive data packets every time it sees the DMK Yacht Network.
3.3 Changing the WiFi Settings of the DMK Box The DMK 11A can be reprogrammed using the DMK App to change the Wi-Fi settings (e.g. Network Name, password, number of attached devices) The configuration settings menu is found in the DMK App by going to the Instrument List page and tapping the Settings button. Any changes to the DMK Box’s wireless settings will require you reconnect the mobile device using the new wireless settings. 3.
the menu of 1, 2, or 3 then tap Update DMK Box. The second device needs to attach at IP 192.168.1.3 and the third device needs to attach at IP 192.168.1.4. 3.7 Changing the Baud Rate of the NMEA 0183 Ports The DMK Box is originally configured with the Primary 0183 Port set to 38400 Baud and the Secondary 0183 Port Set to 4800 Baud. If your data sources to not output at those baud rates then it will be necessary to reconfigure the DMK Box.
SECTION IV TROUBLESHOOTING AND MAINTENANCE 4.1 Troubleshooting your iOS installation. 4.1.1 Most installations are trouble free. However sometimes settings must be changed on the box or wiring must be scrutinized for the box to function fully and correctly. Table 3-1 below show some common problems people have after installing a DMK Box. Problem Check Solution Cannot Connect to DMK Box. LED’s. If none are blinking the box does not have power.
4.1.2 If the LED lights in the DMK box are not active after you connect the electrical power, use a circuit tester to determine why power is not provided to the box. 4.1.3 If you see no packets in the DMK App’s packet log, yet the DMK Box appears to be connected to your iOS device,(you see WI-FI bars on the iOS status bar) there may be a problem with the WEP code password. The solution for this is to use the “Forget this Network button in the iOS WI-FI settings, then follow the instructions in paragraphs 3.
Appendix A Wiring installation examples Wiring a Standard Horizon 2150 AIS Radio The blue wire from the DMK Box connects with the blue wire of the Standard Horizon Matrix 2150 radio. The AIS output from the radio connects the Orange wire of the DMK Box. Power and grounding wires are connected to the vessels electronics circuit.
Wiring a DMK Box to a Raymarine E85001 PC/NMEA Interface Box to a DMK 11A or 11A-GPS - Connect the DMK brown (+) wire to the positive wire powering the electrical circuit. Connect the DMK Ground wires to the NMEA Ground inside the E85001.
Wiring a NMEA 2000 Drop Cable - Connect a new T connector and drop cable from the NMEA 2000 Backbone to the DMK Box. Cut and strip back wires in order to make the following field connections. - DC Power can be taken from the NMEA 2000 Bus by connecting the DMK brown to the drop cable Red and tying the screen and black from the drop cable to the DMK’s black and white wires.
Wiring a DMK Box Directly to a Seatalk Backbone - Connect the DMK Brown to the Seatalk Red - Connect the DMK white and black wires to the Seatalk Screen - Connect the DMK Red wire to the Seatalk Yellow - If there is a device outputting NMEA GPS data then it should be connected to the DMK green wire.
