Pub. 988-0152-082 Addendum I Additional Instructions for Cuda 250 & Cuda 250i S/Map The Cuda 250 contains a communications port for NMEA 0183 output. The instructions for connecting data cables and setting up the communications port appear in this addendum. NMEA 0183 Data Cable Connections NMEA is a standard communications format for marine electronic equipment. The Cuda 250 can send information to any device that receives NMEA 0183 data.
This allows the unit to work with VHF marine radios equipped with the Digital Selective Calling (DSC) distress call feature. To send NMEA 0183 data, the Cuda 250 has one NMEA 0183 version 2.0 communication port. The com port can be used to send NMEA formatted data such as your current position. The provided Cuda 250 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.
Wiring Diagram "A" Begin by stripping the wire ends of the device you're connecting to the Cuda 250. (You'll notice the Cuda 250 data cable comes pre-stripped, with wire ends exposed.) Use a pair of wire pliers to strip about 1/4-inch (6.35 mm) of insulation 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 prestripped wires of the Cuda 250 data cable (shown right). Twist the exposed wires together as shown in the following figures.
Twist the appropriate wires together, making sure that the exposed ends make good contact. Secure the wire ends with wire nuts, then wrap each wire nut securely with electrical tape to protect against moisture, as shown in the figure on the right. After taping the wire ends individually, wrap the entire connection with electrical tape as shown. This will help protect from moisture and prevent the wires from breaking contact.
For Wiring Diagram B installations, remove the Uniden adapter segment at the end of your data cable as shown at left. Snip off the end of the cable protected by the black heat-shrink. At right, we have used clear heat-shrink for clarity, so you can see the diode and resistor protected within. Remove this portion of the cable. After you have removed the adapter segment, use wire pliers to expose the ends of the five remaining wires in the cable.
If you are using a true RS-232 radio or other device, connect its (+) Receive wire to the Cuda 250 data cable's yellow wire and its ground or (–) Receive wire to the Cuda 250 data cable's bare shield wire. Com port to Cuda 250 Yellow (Transmit) (+) Receive or Receive Shield (Ground) To another (–) Receive or ground NMEA device Com port wiring to transmit NMEA information to another standard NMEA-compatible device.
Communications Port Configuration Once NMEA 0183 Output has been enabled from the Main Menu, the Com Port command appears in the System Setup Menu. It allows you to configure the communications port. Menus for changing Com Port settings. If you need additional assistance in configuring the unit to communicate with another device, consult the factory. Customer service phone numbers are in the back of the unit's manual. To set Com Port Configuration: 1. Press MENU|MENU|↓ to SYSTEM SETUP|ENT. 2.
To activate NMEA Output: From the Communication Ports menu, press ↓ to highlight NMEA Input. Press ENT to turn on (check) or turn off (uncheck) the NMEA Input checkbox. To activate NMEA Output: From the Communication Ports menu, press ↓ to highlight NMEA Output. Press ENT to turn on (check) or turn off (uncheck) the NMEA Output checkbox. To activate NMEA GPS Input: From the Communication Ports menu, press ↓ to highlight NMEA GPS Input.
Use ↑ ↓ → ← to highlight a prefix, then press ENT to turn it on (check) or turn it off (uncheck). 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.
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This addendum is for the Cuda 250 S/Map manual, part 988-0152-0101. Pub. 988-0152-082 © Copyright 2005 All Rights Reserved LEI-Eagle, Inc.
