User manual FURUNO IF-2000 OPERATORS MANUAL

[. . . ] Post a warning sign near the switch indicating it should not be turned on while the antaean unit is being serviced. Prevent the potential risk of being struck by the rotating antenna and exposure to RF radiation hazard. Severe injury or death can result if someone falls from the radar antenna mast. Turn off the power immediately if water leaks into the equipment or the equipment is emitting smoke or fire. [. . . ] VECTOR PULSE INT REJ STRETCH ECHO AVG CONTRAST N REJ DISP SEL PM SART T/R Vector mode: True or Relative. Each press of the [4] key selects echo stretch level. -1. 30- 1. 33 [F2] Key The [F2] key selects the level or setting for one of the parameters as selected at step 3 below on the STBY screen. 1. 33. 1 Presetting the [F2] key 1. FUNC FUNC 1 FUNC 2 FUNC 3 FUNC 1 SET FUNC 2 SET FUNC 3 SET F2 SET OFF ON OFF ON OFF ON F2 SET option not valid in TX mode; valid on STBY only. 3. Press the [7] key twice to select F·2 SET. The following display appears: [F2 MENU] Select by VRM knob and press ENTER key. Press the [ENTER/SELECT] key to register your selection, and then press the [MENU] key to finish. Then, a single press of [F2] turns on the function preprogrammed in the procedure above. -1. 31- 1. 34 FUNCTION Key The FUNCTION key works similar to the automatic dialing feature on a telephone, playing back control settings just as they were registered. Instead of manually adjusting controls to set up for a particular condition, for example, navigation in a harbor, you can have the [FUNCTION] key to do it for you. 1. 34. 1 Presetting the FUNCTION key The radar's internal computer offers several navigation condition setups as outlined in the table below. For instance, you might want to preset the level of parameters as HBR (Harbor) in FUNC which you can later select among FUNC 1, 2 or 3 by pressing the [FUNCTION] key. Each setup option defines a combination of several radar settings for achieving optimum setup for a particular navigating situation. Those involved are echo average, interference rejector, echo stretch, noise rejector, enhanced video, video contrast, automatic anti-clutter. Adjusting these features on a function key menu changes the original function key settings. To restore the original settings for a particular function key, it is necessary to display the relevant function key menu and select appropriate menu options. 1. Invalid at P/L S1 and S2 Use on range 1. 5-6 nm Notes: 1) If the 1. 5 nm range is preset for pulselength of S1 or S2, and the 3 nm scale for S2, the echo stretch is not available on those range scales. 2) The echo stretch magnifies not only small target pips but also returns (clutter) from sea surface, rain and radar interference. For this reason make sure these types of interference have been sufficiently suppressed before activating this function. 1. 36. 2 Contrast Contrast is adjustable in 3 levels according to the radar video sampling level. Press [F1], [6] and select the level so that the picture shows up most clearly from the background. -1. 35- 1. 36. 3 Enhanced video The enhanced video function works similar to the echo stretch function, enlarging target echoes in bearing and range direction on 1. 5-6 nm scales. 1. 0. ECHO SIG COLOR YEL GRN * CLTR SWEEP OFF ON (LINK) SWEEP LEVEL 123 ENHANCE OFF ON 2ND ECHO OFF ON PULSE 1 PULSE 2 A/D CURVE ABCD CNTR ENHANCE OFF ON REALTIME HU OFF ON * Color available on R-type. Press the [MENU] key followed by the [5] key twice to show the ECHO SIG menu. Press the [4] key to select OFF or ON from the ENHANCE field as appropriate. Press the [ENTER/SELECT] key, and then press the [MENU] key. Echo enlarged in bearing and range directions 1. 37 Watch Timer The watch timer works like an alarm clock, sounding visual WATCH and audible alarms at a predetermined interval. The label WATCH turns to normal color and the alarm timer is reset to the initial and starts the count-down sequence again. Press the [MENU] key followed by the [4] key twice to select WATCH TIME. WATCH TIME 1. Press the [1] key to select desired interval (3, 6, 12, 15, 20 min) from the ALM INTVL field. [. . . ] The Status field shall be set to V = invalid for all values of Operating Mode except or A = Autonomous and D = Differential. The positioning system Mode indicator and Status fields shall not be null fields. -8. 5- HDG - Heading, deviation and variation IMO Resolution A. 382 (X). Heading (magnetic sensor reading), which if corrected for deviation, will produce magnetic heading, which if offset by variation will provide true heading. $--HDG, x. x, x. x, a, x. x, a*hh<CR><LF> Checksum Magnetic variation, degrees, E/W (see notes 2 and 3) Magnetic deviation, degrees, E/W (see notes 1 and 3) Magnetic sensor heading, degrees * Not used NOTES 1 To obtain magnetic heading:Add easterly deviation (E) to magnetic sensor reading Subtract westerly deviation (W) from magnetic sensor reading 2 To obtain true heading: Add easterly variation (E) to magnetic heading Subtract westerly variation (W) from magnetic heading 3 Variation and deviation fields will be null fields if unknown. HDT - Heading True $--HDT, x. x, T*hh<CR><LF> Checksum Heading, degree true * Not used MTW - Water temperature $--MTW, x. x, C*hh<CR><LF> Checksum Temperature, degrees C * Not used -8. 6- RMA - Recommended minimum specific LORAN-C data Position, course and speed data provided by a LORAN-C receiver. 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