10 DSM300 Operation with PLUS Series DisplaysGeneralThe DSM300 system is comprised of the Digital Sounder Module, hsb2 PLUS(Pathfinder) Series display unit, transducer, and associated cables.The DSM300 module is waterproof to IPX7 and can be installed either above orbelow deck.The unit includes connections to:• power• the transducer• hsb2 PLUS (Pathfinder) Series or C Series display unit• E Series display unit1.2 Fishfinder (Sonar) Mode Display FeaturesWhen connected to a display unit and switched to Fishfinder (Sonar) mode, thefollowing data can be viewed:• Depth, speed and temperature, if the transducer is so equipped• Single or split frequency sonar display: 50 kHz, 200 kHz• Display options: zoom, bottom lock and A-Scope• Windows to display additional data. (Position data requires GPS.)1.3 How to Use this HandbookThis handbook describes how to operate a DSM300 with your hsb2 PLUS(Pathfinder) Series display unit. Instructions for operating the DSM300 withC Series or E Series displays are available in the handbooks for those products.Chapter 2 shows how to start using the hsb2 PLUS (Pathfinder) Series display andviewing sonar echo data.Chapter 3 provides instructions for setting up your PLUS Series display system tosuit your preferences. You should read this chapter to determine how to changethe sonar system from the default settings.Chapter 4 details operating the PLUS Series display unit’s controls in Sonar mode.Chapter 5 provides information for operating sonar functions using the PLUSSeries display: selecting depth range limits, adjusting gain, color and STC, settingalarms, using the VRM marker, marks and man overboard.Appendix A lists abbreviations used in this handbook.