The "sync signal" (or, in many JRC manuals, - Azimuth, or HEADING signal) tells the radar display the exact orientation of the antenna as it spins. Without this, the display cannot map the returning radio waves to a specific heading, so it shuts down the display to prevent inaccurate navigation data.
Before diving into troubleshooting, it is essential to understand what a synchronization signal (or “sync signal”) is and why it is critically important. In a pulse radar system, the sync signal is the master timing reference that coordinates all operational functions. Every time the radar scanner passes a specific reference position (typically the bow or a fixed mark), it generates a timing pulse called the or reference position signal . This signal tells the display system exactly where the antenna is pointing at any given moment. Without this precise timing information, the display cannot determine where targets are located relative to the vessel’s orientation. no sync signal jrc radar
If the problem persists, it is often necessary to contact a certified , as the fault may require specialized testing equipment to isolate faulty PCB components. The "sync signal" (or, in many JRC manuals,
Moisture intrusion inside the multi-pin plugs (often at the base of the mast or the back of the display unit) corrodes the sync line contacts. ⚡ Power Supply Fluctuations In a pulse radar system, the sync signal