User manual STANDARD HORIZON DS41

[. . . ] DS41 Digital Depth Sounder Owner'sManual Standard 2 Inch Installation Dual Station Operation NMEA Repeater Reads in Feet Fathoms or Meters Adjustable Prop or Surface Offset Shallow and Deep alarms Du Sta al Ope tion rati on Contents Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Alarms On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] To exit this mode, press and hold both the " and # keys simultaneously. tdr Units of Measure To select the displayed unit 1. Apply power while holding down the # key. ON ^ V OFF ^ V OFF Press simultaneously Hold down during power up The display will now indicate the current water depth. 2. The display will indicate the current display unit with: Transducer Setting A Transducer Setting is provided to allow the D41 to be used with different transducer types. Some transducers `ring' after the sonar transmit pulse (just like hitting a bell). The setting is used to increase the required level that shallow echoes must meet before they will be displayed. If the D41 gives repeated false readings of 1. 5 to 3 feet depth while in deep water the transducer setting should be increased. If the value is set too high it could cause erratic readings in shallow water. Continue to hold the key down. 8 Ft 8 88 8 FA Feet Meters Fathoms ON 3. To exit this mode, press and hold both the " and # keys simultaneously. Alternatively, if no keys are pressed for a period of 5 seconds normal depth display will resume. ^ V OFF Press simultaneously The display will now indicate the current water depth in the selected display unit. DS41 Owner's Manual 5 Troubleshooting No display: 1. Check that the transducer connection behind the D41is firm and free of corrosion. Erratic readings while moored: Check transducer for growth or multiple coats of paint. Erratic readings while moving: Cavitation (air) under the face of the transducer. Re-route power and transducer cables away from engine, ignition wires and battery cables. Add feed-through filter capacitor on the positive terminal of the ignition coil. When selecting the location for mounting, the following are recommended: · · Controls of the instrument must be accessible to the user. Electrical connections must be routed to the boat system as directly as possible, minimising the length of cable where practical. 2. With the mounting bracket removed, insert the instrument into the hole until the back of the face plate is flush with the outside mounting wall. Slide the bracket over the body of the instrument. Note: Orient the bracket in such a manner that it does not cover the buzzer. 5. Tighten the mounting nut until the bracket is secure. 2. 5" 2. 5" 2. 5" INTERCHANGEABLE FACE PLATES ROUND FACE PLATE SQUARE FACE PLATE . 75" . 5" 3. 75" Figure 1. Connect the power cord at the back of the instrument to a 12 V power supply which is active whenever the ignition switch is on. The red lead should be connected to the positive terminal of the power supply via a 1 amp fuse or a 1 amp circuit breaker. [. . . ] This information is then displayed on all slave devices connected to it. The slave devices can be configured to operate as fully functional NMEA repeaters where they display water depth, as displayed on the master device, and share common alarm settings and keel offset values. In this mode the common alarm settings can be changed or activated/ deactivated from either the master or slave devices. Alternatively, the slaves can be configured to operate as independent slaves. [. . . ]