Question about JRC 1500 MKII Radar

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Bearing Pulse Error (BZ)

When installing this radar unit the white wire, the BZ/TUNI, was left unconnected, so whenever the unit starts up and you try to transmit a signal it will give a Bearing Pulse Error (BZ). This wire was connected, but the problem still exists. I've tried to reboot the system with no luck. Does anyone have any ideas as to how to fix this? thank you

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  • Tom walsh Aug 07, 2007

    went up the mast and disconnected the wiring from the radar unit. This seems to have worked, must of reset the whole system instead of just the display case.

  • fish deep Jun 15, 2008

    I have a jrc 2000 radar that has a bearing pulse error. How do I fix it?

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Posted on Jan 02, 2017

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  • 111 Answers

SOURCE: Error BZ

This is a bearing pulse error. Either the bearing pulse generator inside the motor is bad (Replace the motor) or it's in the radar cable or display.

Posted on Oct 30, 2009

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  • 111 Answers

SOURCE: Raymarine 41xx - Message "bearing pulse error"

More than likely your motor is going bad. Inside the motor is your bearing pulse generator. Replace the motor and you should be ok.

Posted on Jan 22, 2010

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What is pop radar


When radar detectors proved easily capable of sniffing out radar from miles away, radar gun manufacturers responded by producing instant-on radar or unoffically called "Pulse" radar. In the instant-on mode, the radar's transmitter is placed on hold, ready to fire but not yet producing a signal for detectors to hear. The officer waits until his target is very close (brings a new meaning to "wait till you see the whites of their eyes") then releases the radar from stand by mode and gets a speed reading within a second or so (pulse). In this situation, no detector offers much warning.
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1 2 3 4 5
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1 = Thin white wire from thick white cable (Left input)
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