Observator Instruments OMC-131 Installation And Technical Manual Download

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OMC-131 True wind display

Meteorological Applications

Installation & technical user

s’ manual

Version 1.14

TDC April 2017 updated to firmware v3.5

Summary of Contents for OMC-131

Page 1: ...OMC 131 True wind display Meteorological Applications Installation technical users manual Version 1 14 TDC April 2017 updated to firmware v3 5...

Page 2: ...2 10 Serial input Port 3 Gyro HDT or combined heading speed VHW 11 2 2 11 Serial input Port 4 GPS GGA VTG 12 2 2 12 Serial input output Port 5 13 2 2 13 Analogue input output Port 6 14 3 COMMISSIONIN...

Page 3: ...isplay Users manual V1 14 Page 3 TDC April 2017 Version history 1 13 Correction in text on page 16 Starboard and Portside where exchanged 1 14 Added comment page 4 concerning gust display Gust reset d...

Page 4: ...ve and true wind speed This information can be displayed in m s knots mph km h or Beaufort Selection of these units can easily made using the MENU option within the integrated membrane keys Another ME...

Page 5: ...Connector DB9 M User interval 1 600 sec Gust reset automatic or manual Display Averaging interval 2 min 10 min or any user programmed interval selectable from front panel The selected interval is vali...

Page 6: ...smission To reduce interference the cable must have a common screen This screen should be grounded to earth in the junction box of the wind sensor In this way the cable may run distances up to 1 kilom...

Page 7: ...it himself To modify the display unit for a different power supply proceed as follows On the power supply board the PCB with the terminal connection on the rear side there is installed a transformer T...

Page 8: ...supply 3 9 15 21 serial currentloop input or RS422 input 4 10 16 22 serial currentloop input or RS422 input 5 output currentloop or RS422 6 output currentloop or RS422 11 17 23 output RS422 12 18 24 o...

Page 9: ...ocessor board right the following jumper field is used J1 jumper position 1 2 Currentloop input J1 jumper position 2 3 RS422 input J1 jumper position 4 5 RS485 input n a The default settings for port...

Page 10: ...2017 J5 jumper position 1 3 and 2 4 Currentloop output J5 jumper position 3 5 and 4 6 RS422 output 2 2 7 Jumper settings port 2 4 Port Jumper set 1 Jumper 2 2 J2 J6 3 J3 J7 4 J4 J8 RS422 3 5 4 6 1 2 C...

Page 11: ...t it to output all NMEA 2 2 9 Serial input Port 2 Wind sensor Starboard or speed log VHW input GPVHW xxx x T xxx x M xx x N xx x K hh T Heading in degrees true M Heading in degrees magnetic N Speed kn...

Page 12: ...mber of GPS satellites being use dd d Horizontal dilution of precision M Antenna height relative to main sea level M Geoidal separation units in meters gg g Age of differential GPS data kkkk Different...

Page 13: ...t settings for port 5 are RS232 input and output communication speed 9600 bps Port 5 can be used for output all the received information to a computer running the OMC data online software for capturin...

Page 14: ...put and providing 0 1 0 Volt or 4 20 mA over a set range The output is non isolated Use of an external isolator is recommended 2 2 13 Port 6 input Port 6 uses the connections on the rear of the instru...

Page 15: ...on 2 3 is selected and in jumper field J3 the jumper settings 1 3 and 2 4 are selected To get a 4 20 mA output the jumpers must be set as follows Jumper field J2 set 1 2 Jumper field J3 set 3 5 and 4...

Page 16: ...ind sensor the supply voltage is switched OFF for 5 seconds If this is happening during the commissioning check the wiring to the wind sensor If two wind sensor are used the same procedure should be f...

Page 17: ...o heading and the log speed As soon as the speed in the GPS message becomes more then 3 knots the GPS information will be used This is shown on the indication leds on the front panel of the display Wh...

Page 18: ...on port 3 If you would like to use the VHW speed AND heading data you must use port 3 This will replace the gyro HDT input Expected input message VHW Water speed and direction GPVHW xxx x T xxx x M xx...

Page 19: ...cksum is all information in the string added the least significant byte is divided into high and low nibble and both nibbles are incremented by hexadecimal 30 This information is sent out as a checksu...

Page 20: ...buttons pressed all the displays and led s start flashing lamp test When the interval time for gust is set to 0 seconds the Gust must be reset manually this has to be done by pressing the menu and th...

Page 21: ...liquid enters the display unit Solvents should not be used and scratches should be avoided Fuses Glass fuses 5x20 mm slow 250mA for 230 Vac 500 mA for 115 Vac 630 mA for 24 Vdc The fuse can be reached...

Page 22: ...d of the cable to a PC Cable needs wires 2 3 and 5 to be connected 2 and 3 swapped Start on the PC a terminal program like Terminal under Windows or Hyper terminal under windows XP Select the proper t...

Page 23: ...sabled as shown in use indicates the option is not selectable since it is in use by another function If you want to enable this function you will need to disable the other function first If number 1 o...

Page 24: ...cted the menu as shown on the right will appear On board of some ships it is possible to obtain ships speed and direction from the ships computer The message is in the NMEA 183 format When it is possi...

Page 25: ...ht the step unit can be switched on or off and if on the correct transmission speed must be set This is always 1200 bps When it is not possible to get ships speed information in NMEA format the pulse...

Page 26: ...ixed the only thing that can be changed here is the transmission speed for the different output ports Select the number in front of the option if done a new menu window will open as shown below If the...

Page 27: ...with the gust display reset time If this average time is set to zero the gust display has to be reset manually Otherwise it will be reset when the set time here has elapsed 5 4 Set options 1 Dim on Di...

Page 28: ...l as the communication speed is shown The window shows which input is used for ships speed and heading with the used communication speed From the output ports the baud rate settings are shown For more...

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