User manual RAYMARINE DSM25 DIGITAL SOUNDER MODULE (FOR A65)

[. . . ] DSM25 Digital Sounder Module Owner's Handbook Document number: 81254-2 Date: March 2006 Trademarks and registered trademarks Raymarine is a registered trademark of Raymarine plc. All other product names are trademarks or registered trademarks of their respective owners. Contents of this handbook © Raymarine 2006. 3 Contents Important Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Safety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] · MED is a slightly higher gain setting that displays more detailed echoes as you are trolling. · HI gives the best details of the targets you have located but also displays the most background noise and surface clutter. With all of these modes, the DSM will automatically adjust the Gain setting for current conditions and adjust separately for each frequency. The default is HI. Color Gain Color gain determines how echoes of different strengths are displayed. The default is AUTO. TVG (Time Variable Gain) The TVG (Time Variable Gain) reduces the clutter by varying the gain throughout the water column. Increasing the TVG value increases the maximum depth to which TVG is applied. The default is AUTO. Manually Adjusting the Gain Modes If necessary you can set the gain controls manually. The new values remain set even when you switch off the display and are applied to both the active window and any other fishfinder windows displaying that frequency. The adjustment slider is displayed above the appropriate soft key. Chapter 3: Using the Sounder Module 31 3. This should be set high enough to see fish and bottom detail but without too much background noise. Generally, a high gain is used in deep and/or clear water; a low gain in shallow and/or murky water. All echoes with a signal strength above this value are displayed in the strongest color. Those with a weaker value are divided equally between the remaining colors. Setting a low value produces a wide band for the weakest color, but a small signal band for the other colors. Setting a high value gives a wide band for the strongest color, but a small signal band for the other colors. A high value decreases the gain in shallow water so that only the strongest echoes are displayed. Press CANCEL or ENTER twice to return to the default display. Operating Frequency The DSM provides four frequency modes: · AUTO mode. The system automatically selects the appropriate frequency according to your depth. As the depth increases the DSM changes the frequency from 200 kHz to 50 kHz and as the depth decreases it switches from 50 kHz to 200 kHz. The DSM25 scans a wide area and penetrates water well, so is good for use in deep water. The DSM scans a narrower area, but produces a more detailed view so is good for finding fish that are near the bottom or close together. The scrolling bottom display is split vertically; the left half shows the 200 kHz detailed view and the right half shows the 50 kHz image. [. . . ] The following table shows the various LED status codes and their meanings. No of blinks 1 2 3 4 5 6 7 8 Red E R R O R S 1 2 3 4 5 6 7 8 Cleared every 10 min Color W A R N I N G S Amber Meaning Transducer Sense Failure Network Not Detected 1 High Temperature Warning Reserved Reserved Reserved Reserved Watchdog Timeout Reboot Unknown Error Battery Voltage Error High Temperature Error Flash Memory Failure Reserved Reserved Reserved Hardware Monitor Failure 1 After 30 seconds of no network activity, the DSM25 enters Standby mode: No sonar pings are emitted and no warnings are output on the LED. Instead, the LED blinks green once every 10 seconds. 54 DSM25 Owner's Handbook Status LED D8722-1 As an example, if the Transducer Sense fails and the network is not detected, the LED blinks amber once, pauses 1. 5 secs, blinks amber twice 0. 5 secs apart, pauses 1. 5 secs, and then repeats the sequence until the problems are resolved or up to 10 minutes elapse. If the event of a fatal error, the system will power cycle to attempt to self-correct the condition. If the condition persists, please contact Raymarine Customer Service. 5. 4 How to Contact Raymarine On the Internet Visit the Raymarine World Wide Web site for the latest information on Raymarine electronic equipment and systems at: www. raymarine. com Customer Support Navigate to the Customer Support page for links to: · · · · · Finding Factory Service locations and Authorized Dealers near you Registering your Raymarine products Accessing handbooks in Adobe Acrobat format Downloading RayTech software updates Accessing the Raymarine solution database Clicking the Find Answers link routes you to our solution database. [. . . ]