User manual SIMRAD NX45

[. . . ] Simrad NX40/45 NavStation Installation & Operation Manual Warning It is your sole responsibility to install and use the instrument and transducer(s) in a manner that will not cause accidents, personal injury or property damage. The choice, location, and installation of transducers and other components of the system are critical to the performance of the system as intended. To reduce the risk of misusing or misinterpreting this instrument, you must read and understand all aspects of this Installation and Operation Manual. We also recommend that you practice all operations using the built-in simulator before using this instrument at sea. [. . . ] If you want to save on power but be able to start transmitting immediately, use standby mode. 17-3 Enabling the radar functionality When the radar is enabled, it will turn on, warm up, and enter standby mode. To enable the radar functionality > System · Set Radar to . · The radar immediately turns on and enters warm-up mode. · When the warm-up period is complete, the radar enters standby mode and is ready to transmit. 17-4 Selecting standby mode or transmit mode > Transmit or (standby mode) 17-5 Disabling the radar functionality > System · Set Radar to . · A warning message appears. If you are sure that you want to disable the radar functionality, select Yes. 66 Simrad NX40/45 Installation and Operation Manual · The radar enters disabled mode immediately. 17-6 Adjusting the quality of the radar window Common problems that can degrade the quality of the radar window include: · sea clutter · rain clutter · false echoes (sometimes called ghost echoes) and background noise · side lobe patterns (false echoes that appear as an arc or a broken arc) · shadows (blind spots) · multiple echoes off the same object · incorrect threshold setting If the radar is installed at a suitable height and in a suitable location on your boat, side lobe patterns and shadows (blind spots) caused by obstructions such as funnels or masts will be minimized. If you're having problems with these, you may need to relocate the radar. Consult the Installation Guide for your Simrad radar or talk to your dealer or installer. Multiple echoes off the same object are most likely to occur when you are close to a large target and are usually only a temporary nuisance. You can adjust the radar to reduce the effects of sea clutter, rain clutter, and interference from other radars. You can also change the gain mode setting and the gain level setting to help reduce false echoes. To adjust the radar > Presentation > Adjust Radar > 17-6-1 Changing the gain mode Use the radar gain mode to specify whether you want to adjust the radar gain yourself or have it adjusted automatically. To change the radar gain mode > Adjust Radar > Gain Mode Simrad NX40/45 Installation and Operation Manual 67 · Manual. Adjust the radar gain yourself to suit your local conditions and preferences. The radar gain is adjusted automatically. 17-6-2 Changing the gain level Use the radar gain level to adjust the sensitivity of the radar receiver. Ideally, the radar gain level should be set so that background noise is just visible on the radar window. If the radar gain level is too high, strong echoes will be difficult to see amongst the large amount of background noise. (If the radar Gain Mode is set to Auto and you adjust the gain level manually, the Gain Mode is changed to Manual. ) To change the radar gain level > Adjust Radar > Gain Level > 17-6-3 Changing the sea clutter mode (Manual mode) Sea clutter usually appears as confusing, random signals close to your boat on the radar window. High waves that can reflect the radar signal will produce the maximum amount of sea clutter. You can change the sea clutter mode yourself or have it changed automatically to compensate for the sea conditions. To change the sea clutter mode > Adjust Radar > Sea Clutter · Manual. The sea clutter setting is adjusted automatically to suit a harbour environment. The sea clutter setting is adjusted automatically to suit an offshore environment. Adjust the sea clutter setting yourself for a particular radar range, then have those settings stored and automatically re-used whenever you operate at that range again. 17-6-4 Changing the sea clutter level If the sea clutter level is set too low, a lot of sea clutter will be shown. [. . . ] Waypoint - A position that you can set on the Unit chart, for example a fishing spot or a point on a route. Weather - An estimate of the weather based on barometric pressure. DTN - Distance to the next position the NX40/45 is navigating to, either a waypoint or the cursor. Fish forecaster - An estimate of the likelihood of catching fish based on barometric pressure. The more fishes that show the higher the likelihood (requires Simrad 721 VHF radio). [. . . ]