Bearing Pulse Error (BZ)

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.
There are guns out there that operate just like the instant-on guns of the past but with a very tough twist - POPTM mode! This gun is a normal K and Ka band radar gun detectable by most radar detectors made in the past 30 years, until this gun is placed in POP mode. When the gun is in POP™ Mode and activated, a brief burst of energy, less than 1/15 of a second, is transmitted and the vehicle's speed is quickly acquired. A detector without POP™ Mode detection capability cannot respond to this brief transmission.
TIP - When traveling in unfamiliar highways always try to find a vehicle which is traveling at the same rate or faster than you are and keep several car lengths behind them. This way the other vehicle can "flush out the radar".

After black out of ship during audit Radar Model JMA 9303 no work.
Radar start work and after 15 sec. switch off.
Radar not show target and display error "ANTCLK ER" ( Bearing pulses are not
sent to the display unit)and "TRIG ERR" unknown error.
Antena of radar working.

Any body can suggest the solution

Hi, I hope this helps,

Pins look like this: (Top view, not copper side)
1 2 3 4 5
6 7 8 9

1 = Thin white wire from thick white cable (Left input)
2 = Gray (Speaker out)
3 = Orange (+V return from volume unit to bass unit)
4 = Not connected
5 = Thin Red wire from thick red wire (Right input)
6 = Blue (+V power from bass unit to volume unit)
7 = Black (GND - if socket removed, solder 3 socket shield holes to each other or solder black wire directly leftmost hole)
8 = Not connected
9 = Shield copper from thick red wire

Shield copper from thick wire : Solder to GND or Left unconnected

I am commenting on things are here in the u/k not u/s which is not the same but i hope this is of some help.......From the wall black and white ,this is a switch wire which is on or off, i would link this to white to white , black to black or black to red with the rest left unconnected,,,,,Check to see if you have fitting instructions indicating what wire goes where....Good luck

Normally the bearing pulse comes from the bearing pulse generator built inside the motor. Every time the motor turns it sends a pulse down the line showing the radar that it is indeed spinning. There is also a Heading pulse that comes from an electric eye elsewhere in the housing. The other thing could be that the wire carrying the bearing pulse is not getting back to the display. More so than often, it's the motor. I would have the display sent out to be checked on a simulator if there is a marine electronicshop nearby.

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.

im sure you cut the starter wire in the ignition switch. usually white. put it back and check. if it starts check the programming configuration of the black widow

Large Blk and Large Wht goes to 2a
Large Red goes to 1a
Grn goes to 1b
Blu goes to Bz
Coax goes to Vd
Wht (shielded) goes to Gs
yel goes to 33
Red Shielded goes to Bp
Brn (small) goes to pl
black shielded goes to tI
Large brown not used tape end fold back and secure to harness.

The messages “NO HEADING PULSE” and “NO BEARING PULSE” means that the display is not communicating with the scanner (antenna). Both of these signals are generated in the scanner if you get this error check that the antenna cable is firmly connected and that the contacts are clean and corrosion free.

If the connection at the display looks good and feels like it’s properly connected, check the cable for any damage If you find damage you could try to repair the wires BUT (because of corrosion and moisture problems) IT IS STRONGLY REMENDED that the cable be replaced, but it’s kind of expensive $275.00.

The Part number is 000-130-034. Depending on the marine shops in your area they may have it in stock (or they can order one) but you can get it directly from Furuno at;
http://www.furunousa.com/Furuno/Rooms/Search/ProductPropertySearchResults?_webrFormIdentity=com.webridge.layout.FormLayoutExImpl%5BOID%5B47F81E95CB197F4C8708859EA0E22F08%5D%5D&_webrFormUniqueID=0&_webrCharacterEncoding=iso-8859-1&_webrLocale=en-us&_webrClusterUpload_2=&ptype=com.webridge.entity.Entity%5BOID%5BE670694808555649838ED263AA4CAB0A%5D%5D&productname=000-130-034&searchOption=normal&searchOption_webrHidden=radio

I hope it’s just a loose connection. Good luck!

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