User manual JRC RADAR 1500 MKII

[. . . ] Thank you for purchasing the RADAR 1500 MK@ LCD radar. This product will provide many years of trouble free use when operated properly, so it is important that you read and observe the precautions below. Read this manual thoroughly to gain a good understanding of the capabilities and the requirements of this equipment. Store the manual in a safe location so, that it does not become lost or damaged. [. . . ] However, the prudent navigator spends time in good visibility to learn the layout of the controls and to become proficient in their use, so that he/she will obtain the best performance from the equipment when the visibility is poor, or the sea area is crowded. This section takes you through the controls step-by-step. 4. 1 LAYOUT OF CONTROLS The layout of front panel controls is as shown in FIG. 4-1. VRM/EBL Key J-Dial Joystick with MENU/ENT OFFSET Key Contrast/Dimmer Key Transmit/off Key Stand-by/off Key FIG. 4-1 OPERATING CONTROLS 22 OPERATION 4. 2 TURNING THE RADAR ON AND OFF TO TURN ON TO TRANSMIT TO STAND-BY TO TURN OFF Press the STBY/OFF key. Press the STBY/OFF key and the X-MIT/OFF key simultaneously. When you Press the STBY/OFF key, a 90 second warm-up count down timer is activated and displayed together with the total (display unit) usage to date. Press the X-MIT/OFF key, the radar transmits, the scanner begins to rotate and echoes will appear on the screen. Press the STBY/OFF key, the radar returns to stand-by mode to reduce battery drain. Press the X-MIT/OFF key again, the radar reverts to full transmitting function. These sequences are also guided by on-screen prompts. 90 SEC 0000HOURS VX. X PUSH XMIT TO OPERATE FIG. 4-2 TURNING THE RADAR ON/OFF OPERATION 23 INTERFERENCE REJECTION "ON" TARGET EXPANDER "ON" RANGE RING INTERVAL (NM) RANGE SCALE (NM) OWN SHIP COURSE DATA OWN SHIP SPEED DATA SELECTING J-DIAL LEVEL INDICATOR TUNE INDICATOR NAVIGATION DATA TRAIL "ON" GUARD ZONE ALARM "ON" POSITION DATA FIG. 4-3 LAYOUT OF THE SCREEN 24 OPERATION 4. 3 SELECTING A RANGE Press the J-DIAL until RANGE is highlighted in the upper right corner of the display. The range scale and range rings setting in use is shown in the upper left corner. Rotate the J-DIAL clockwise to increase the range and anti-clockwise to decrease it. The range rings are automatically set to correspond with this selection. 4. 4 ADJUSTING RECEIVER SENSITIVITY Press the J-DIAL until GAIN appears highlighted in the upper right corner of the display. Rotate the J-DIAL clockwise or counterclockwise, to vary the gain and thus control the strength of echo returns on the radar screen. An on-screen bar indicates the gain level selected. The proper setting is when the background noise is just visible on the screen. a light speckled effect) 4. 5 ADJUSTING TUNING Press the J-DIAL until the TUNE appears highlighted at the upper right corner of the display. Rotate the J-DIAL clockwise or counterclockwise, to maximize the target echo. If there is no large, identifiable target (e. g. [. . . ] 5. 3 LCD FILTER SURFACE CLEANING In time, the surface of the LCD FILTER (screen) may accumulate a film of contaminants, which tend to dim the picture. A good glass cleaner and a soft cloth or towel can be used to clean the LCD display, the keyboard and the display cabinet. 5. 4 FUSE A fuse seldom blows without some cause. Even if a fuse is replaced and it does not immediately blow again, it may still be necessary to make further checks on its associated circuits. [. . . ]