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General| Category | Marine Radar |
|---|---|
| Manufacturer | Kongsberg Simrad |
| Type | RA94 |
| Power Output | 25 kW |
| Range | Up to 96 nautical miles |
| Beamwidth | 0.9° horizontal |
| Interface | ARPA, AIS |
Details safety measures for maintenance, including high voltage and static electricity.
Covers initial considerations, unpacking, inspection, and unit setting.
Details how to route and connect cables for the antenna and processor units.
Guides through installing the transceiver, aerial, processor, and other components.
Details procedures for transmission timing, heading setup, and GAIN/STC settings.
Introduces basic operation, control panel layout, and operating controls.
Guides users through initial startup and fundamental radar operations.
Details the function of POWER, STBY/TX, and RANGE controls.
Explains the SP/LP switch for pulse length and the BRILL control for display brightness.
Describes controls for receiver gain, sea clutter, and rain clutter reduction.
Details the EBL control for bearing and VRM control for distance measurement.
Covers offsetting the radar picture and displaying navigational data.
Details keys for updating, deleting, acquiring, and managing targets in EPA/ATA.
Explains the function of MENU, ENT, HL OFF, and AUDIO OFF keys.
Guides the user through the initial power-on and system startup sequence.
Lists key operations including range, pulse, gain, clutter, and measurement.
Details how to select the radar's range scale and transmission pulse length.
Explains how to use SEA and RAIN controls to reduce sea and rain clutter.
Details procedures for measuring target bearing using single and dual EBLs.
Covers range measurement using Range Rings and VRMs (single and dual).
Explains how to use offset EBL/VRM to measure distance and bearing between targets.
Describes how to offset the radar picture for better viewing.
Explains the four available presentation modes: Head Up, North Up, Course Up, True Motion.
Details how to set the position, depth, and width of the Guard Zone alarm.
Details settings for radar picture stabilization and EPA/ATA functions.
Details information needed for service and explains self-diagnosis features.
Provides first-line faultfinding steps and faultfinding charts for diagnosis.
Covers on-board servicing, including procedures for replacing fuses.
Troubleshooting steps for the operation unit not turning on or showing display.
Diagnosing faults related to menu display, panel checks, and control/key switches.
Diagnoses issues with display sync, RGB signals, and erratic text/graphics.
Troubleshoots antenna unit faults like shorted +12V, faulty pulse selection, and rotation issues.
Diagnoses faults related to the modulator PCB, pulse selection, and +24V supply.
Troubleshoots antenna rotation issues and checks motor fuses.
Diagnoses motor power supply and brush degradation for antenna rotation.
Troubleshoots azimuth and heading line abnormal messages and signal pulses.
Diagnoses issues with transmission, modulator PCB, and magnetron heater.
Troubleshoots manual tuning problems and IF PCB or LNFE module faults.
Troubleshoots tuning meter faults and problems with automatic tuning function.
Diagnoses issues causing no picture display or magnetron current abnormalities.
Diagnoses poor sensitivity issues, including magnetron and MIC monitor voltage.
Troubleshoots MIC module faults and issues related to the IF PCB.
Lists the types, shapes, and ratings of the three fuses provided.
Shows the location of the main, modulator, and drive motor fuses on the processor unit.
