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7

Compatibility With Various VHF Radios

The Digital Selective Calling (DSC) feature in marine radios is rela-
tively new technology. The U.S. Coast Guard, for example, imple-
mented its first DSC-capable systems in Atlantic City, NJ and Chinco-
teague, VA in September, 2003. However, the entire U.S. DSC rescue
system won't be operational until Sept. 30, 2006.

As more marine electronics manufacturers enter this growing market, other
connectivity issues with your unit may appear. You can check for known
compatibility issues by visiting our web site, 

www.lowrance.com

. Look in

the Manuals section for updated documents for your sonar/GPS unit.

Summary of Contents for M52i S/GPS

Page 1: ...e provided M52i data cable plugs into the accessory socket on the right side of the back of your unit s case The data cable ends in two wires that connect to your VHF radio or other NMEA device The M52i uses the yellow wire to transmit and the black shield wire for signal ground NOTE Some VHF radios such as the popular Uniden brand have input lev els which require use of an additional diode and re...

Page 2: ...posed Use wire pliers to strip about 1 4 inch 6 35 mm of in sulation from each of the radio s or other device s data wires Strip the ends of the VHF radio s data wires Connect them to the pre stripped wires of the M52i s data cable shown right Twist the exposed wires together as shown in the following figures If you re using a Uniden or similar radio connect the radio s NMEA Wire to the M52i data ...

Page 3: ...re connection with electrical tape as shown This will help protect from moisture and prevent the wires from breaking contact Wiring Diagram B If your VHF radio or other device requires true RS 232 you will need to remove the diode and resistor built into the end of the M52i data cable You will notice near the end of the cable a segment protected with black heat shrink To connect the M52i to a true...

Page 4: ...adapter segment prepare to connect by removing and taping off unneeded wires Strip the end of the yellow wire Strip about 1 4 inch 6 35 mm of insulation from the yellow wire then follow the preceding wire nut and taping instructions to connect the wires from the radio or other device If you re using a true RS 232 radio or other device connect its Re ceive wire to the M52i data cable s yellow wire ...

Page 5: ...in the back of the unit s manual To set Com Port Configuration 1 Press MENU MENU to SYSTEM SETUP ENT 2 Press to COM PORT ENT A menu appears with a drop down Baud Rate selection box highlighted The menu also contains an on off checkbox to activate NMEA Output and a button that activates the Configure NMEA command described in the following section To set Baud Rate With the Baud Rate box selected th...

Page 6: ... prefix on NOTE The names of the NMEA sentences are abbreviated in this menu These are the functions of the various selectable prefixes GLL transmits latitude and longitude of present position time of position fix and status GGA transmits time position and fix related data APB transmits autopilot information RMC and RMB transmits navigation information messages GSA and GSV transmits fix mode DOP v...

Page 7: ...ntic City NJ and Chinco teague VA in September 2003 However the entire U S DSC rescue system won t be operational until Sept 30 2006 As more marine electronics manufacturers enter this growing market other connectivity issues with your unit may appear You can check for known compatibility issues by visiting our web site www lowrance com Look in the Manuals section for updated documents for your so...

Page 8: ...8 This addendum supplements the manual M52 part number 988 0152 001 Pub 988 0152 071 Copyright 2004 All Rights Reserved Printed in USA 022704 Lowrance Electronics Inc ...

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