User manual JRC JMA-3806

[. . . ] Maintain this instruction manual so that operators can refer to it at anytime. Refer to this manual when any inconvenience or defect occur. Various pictorial indications are included in this manual and are shown on these equipment so that you can operate them safely and correctly and prevent any danger to you and / or to other persons and any damage to your property during operation. Such indications and their meanings are as follows. [. . . ] A ring around the distance range will be displayed as a continuous line. (g) Move the marker using the cross key. Move the marker to change the shape of the guard zone to any desired shape. Guard zone in the process of being designated. (b) Push the soft key 4 to switch the wake time between and . Eradicating the guard zone (a) Push the soft key . The guard zone that had been produced will disappear from the PPI screen and the lookout alarm function will be disabled. Calling a guard zone (a) Push the soft key . Alarm sensitivity "1" through "7" indicates the level of the image (strength of the echo) at which the alarm is sounded. 1 Displaying the ship's speed on the display unit When speed information is input to the display unit, the ship's speed is automatically displayed. In order to use this function, it is necessary to input ship's speed information from a navigation device. (b) Push the key, key and key key and key simulta- Power will be turned on as in normal operation for turning on power. This radar equipment has the following busses at the rear of the display unit. An external navigation device with either of these busses may be connected for input and output of information. In order to obtain information on the bearing of the ship, one of the following needs to be connected to the display unit. In order to obtain information on the speed of the ship, one of the following devices need to be connected to the display unit. In order to obtain information on the ship's position in terms of latitude and longitude, one of the following devices need to be connected to the display unit. LORAN C In order to obtain the ship's position information using LORAN C time difference, the following needs to be connected to the display unit. In order to obtain information on the L/L of the waypoint, one of the following devices need to be connected to the display and the waypoint set in such device. In order to obtain information on distance to the waypoint, one of the following devices need to be connected to the display unit, and it is necessary that the waypoint set in the navigation device is displayed on screen. LORAN C Information on distance is input from either the CMPS or NAVRX terminals. The maximum distance to a target that can be observed with a radar depends not only on the power of the radar's transmitter, beam width of the scanner unit, and the receiver's sensitivity but also on height of a target, distance to a target and height of scanner unit line etc. [. . . ] Cleaning Remove dirt, dust, or water-spray from the radar unit enclosure and keep it as clean as possible. Screw inspection Check the screws used to assemble and secure the components of the radar unit for loose connection. Cabling check Check the cables connecting between the components (between the scanner unit and display unit, display unit and power supply, and display unit and optional devices) for poor connection. Before starting maintenance work, be sure to turn off the main power source. [. . . ]