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Analog video radar cable test
01-26-16, 09:42 AM (This post was last modified: 07-18-18 04:36 PM by Chuck - Raymarine - Moderator.)
Post: #1
Analog video radar cable test
Analog video radar cable test

In situations where radar cables are commonly connected and disconnected from the radome, radar pedestal, display, junction boxes, or terminal strips, failure of the radar cable may occur. The following cable resistance checks are commonly used to test an analog video radar cable designed for use with hsb/hsb2/SL Pathfinder Series Radar Displays, C-Series Classic MFDs, and E-Series Classic MFDs:

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Analog Radar Scanner Communications Check:

1. Disconnect the radar cable's plug from the display's Radar socket and switch off the power circuit supplying power to the radar scanner (open arrays only) Measure the resistance between pin 6 and pin 10. The measured resistance should be 160 Ohms ... if so, then proceed to step 5 of this diagnostic procedure.

2. Remove / open the radar scanner's cover and check the condition of the connector's pin 3 (blue) and pin 4 (green) leads. If necessary, repair the connections.

3. Within the scanner, disconnect the connector from the scanner's processor board. Measure the resistance between pins 3 and 4 on the processor board. The measured resistance should be 160 Ohms ... if so, then the radar cable has suffered a failure and should be replaced.

4. If the measured resistance obtained in step 3 is not as specified, then the radome has suffered a failure within its circuitry. As Raymarine's Product Repair Center can no longer service analog radomes and analog open array pedestals, a replacement would need to be sought from the second hand market (recommend searching Internet auction sites) or the marine electronics may need to be upgraded.

5. If all cable and scanner checks pass, measure the resistance between pins 6 and 10 within the display's Radar socket. If the measured resistance is not 160 Ohms, then the display has suffered a failure of its radar processing circuitry. As Raymarine's Product Repair Center can no longer service radar displays and MFDs which were designed to be used with analog radomes or analog open array pedestals, a replacement radar display or MFD would need to be sought from the second hand market (recommend searching Internet auction sites) or the marine electronics may need to be upgraded.

With regard to video, analog, and trigger lead tests no tolerances are specified. The tester will be primarily seeking to determine whether the resistance checks indicate any open circuit readings. As indicated above, failure of the radar cable test may necessitate replacement of the radome connector, radar pedestal connector, radar cable, radome and/or the radar display. Click here to view the FAQ listing replacement analog video radome cables and how to purchase them. Click here to view the FAQ listing replacement analog video pedestal cables and how to purchase them.

As indicated above, the part number for the Radome Connector is R126 and the part number for the Open Array Pedestal Connector is R58056. Unfortunately, these to parts are no longer available. As all of Raymarine's radomes and open array radar pedestals introduced in the last nine years have been designed with Ethernet communications interface, Raymarine ceased production of radar cables for radomes and open array radar pedestals having an analog video interfaces several years ago. Accordingly, availability of radar cables for radomes and open array radar pedestals having an analog video interfaces is now limited.

RAYFAQ#


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