GPS Receiver · Position & Heading
The JRC JLR-7800 is a marine GPS/DGPS receiver. It is normally installed on the bridge with satellite and correction-source interfaces. It is designed for positioning with differential correction capability where supported. The operating principle relies on satellite navigation combined with a differential correction source. Compared with neighbouring models, the relevant differences are correction method, constellations, antenna arrangement and data interfaces; these must be confirmed from the installed documentation rather than inferred from the model designation alone. Service and survey attention should concentrate on GNSS and correction status, antenna/cabling, position comparison, outputs and alarms. For exact ratings, dimensions, tolerances, test limits and model-specific settings, refer to the manufacturer documentation for the exact figure.
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What our service work and the manufacturer documentation say about keeping this model running.
Verify the equipment against an independent navigation reference where practicable, inspect antennas/transducers, cables and power supplies, and confirm required sensor inputs and alarms. Check data distribution to dependent bridge equipment and review calibration, chart or configuration status appropriate to the device. Use vessel procedures and manufacturer tests for acceptance.
Carry fuses, connectors, selected power-supply and cooling parts, interface converters and manufacturer-recommended display/processor or sensor spares. Hull-mounted sensor replacement should be planned around the actual access arrangement.
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