Sperry Marine T65800814-11 Radar Processor PCB

Sperry Marine T65800814-11 BridgeMaster E Radar Processor PCB Assembly

The Sperry Marine T65800814-11 is a radar processor printed circuit board (PCB) assembly engineered specifically for the Sperry Marine / Northrop Grumman BridgeMaster E (BME) marine radar series. Designed to serve as the central tactical compute engine within BME display and processor consoles, the T65800814-11 handles raw radar signal digitization, azimuth/heading marker tracking, fast scan conversion, electronic plotting aid (EPA) vector generation, and real-time target tracking calculations.

Built to survive harsh maritime environments including severe hull vibration, high ambient humidity, and electrical noise from shipboard switchboards, this multilayer surface-mount board integrates high-reliability transceiver acquisition circuits with low-latency NMEA 0183 navigation sensor data processing. Whether deployed in a commercial merchant vessel, high-speed craft, naval auxiliary, or offshore platform, the T65800814-11 delivers uninterrupted radar tracking accuracy compliant with stringent International Maritime Organization (IMO) standards.

Model Details

• Manufacturer: Northrop Grumman Sperry Marine / Decca Marine
• Model Name: BridgeMaster E Radar Processor PCB (EPA / Display Processor Unit)
• Manufacturer Part Number (MPN): T65800814-11
• Bare Board / Sub-Assembly Number: T65800814
• Revision Level: -11 (Enhanced trace thermal dissipation and upgraded transient suppression)
• Legacy Alternative Coding: 65800814 / T65800814-8 / T65800814-10

Features

1. Advanced Raw Video Digitization & Filtering: Employs high-speed analog-to-digital converters paired with dedicated clutter suppression filters to extract weak targets from intense sea clutter, rain clutter, and co-channel radar interference.
2. Hardware-Accelerated Real-Time Scan Conversion: Converts polar transceiver video returns (rho/theta) into raster-scan Cartesian (X/Y) coordinate output for ultra-stable, flicker-free presentation on high-resolution CRT and TFT flat-panel displays.
3. Integrated Multi-Sensor Gyro & Speed Log Ingestion: Features onboard opto-isolated RS-422/RS-232 serial channels and sync ports for instantaneous heading (synchro/stepper via interface or IEC 61162-1 NMEA) and speed log inputs (200 pnm or dual-axis Doppler).
4. Deterministic Target Calculation (EPA/ATA Core): Calculates True/Relative Vectors, Closest Point of Approach (CPA), Time to Closest Point of Approach (TCPA), and collision threat sectors with microsecond latency.
5. Robust Marine-Grade Thermal & ESD Protection: Features heavy-gauge industrial ground planes, conformal-coated multilayer FR-4 substrate, and transient voltage suppression (TVS) arrays on all external interconnects to resist marine hull potential spikes.

Compatibility

• BridgeMaster E 180 Series: Desk-mounted and console display units.
• BridgeMaster E 250 Series: Standard and extended desktop/deckhead consoles, including standalone and integrated tabletop radar configurations.
• BridgeMaster E 340 Series: Deck-mounted pedestal consoles, kit-format processors, and integrated naval consoles.
• Turning Unit / Transceiver Links: Compatible with both masthead integral and bulkhead-mounted X-Band (3 cm, 10 kW / 25 kW) and S-Band (10 cm, 30 kW) transceivers.
• Display Types: Directly drives native CRT raster monitors and legacy Flat Panel Display (FPD) conversion modules.

Part Number Cross-References

• Primary Part Number: T65800814-11
• Base Board Code: T65800814 / 65800814
• Previous Revisions: T65800814-8, T65800814-9, T65800814-10
• System Parent Assemblies: 65800010, 65830000, 65801000 series (BridgeMaster E 180 / 250 / 340)
• Interfacing Power Supply PCB: 65800813 / T65800813 series

Frequently Asked Questions

What symptoms indicate a failed Sperry Marine T65800814-11 radar processor board?

Common symptoms of a defective processor board include a blank radar screen with functional backlights, “No Video” or “Azimuth Fail” persistent alarms, frozen target tracking vectors, failure to acquire EPA/ATA targets, intermittent rebooting of the console, or corrupted graphic overlays while the transceiver continues to rotate.

Is the T65800814-11 interchangeable with earlier revisions like the T65800814-8 or -10?

Yes. The revision -11 is the fully backward-compatible, superceding OEM iteration for earlier T65800814 variants. It features upgraded power rail filtering and improved thermal stability. Always check that the configuration link switches on the new board are set identically to the board you are replacing.

Does the T65800814-11 radar processor board require software flashing after installation?

The T65800814-11 contains onboard boot firmware stored in non-volatile flash ROM. Once the hardware links are matched and the console is powered up, the board automatically negotiates with the console control CPU. Fine calibration (heading alignment, zero-range delay, and serial baud rates) must be finalized through the BridgeMaster E technician service menu.

How do I verify whether a “No Video” alarm is caused by the processor PCB or the transceiver?

Check test point voltages on the T65800814-11 using an oscilloscope or high-impedance multimeter. If the raw radar trigger pulses and video returns arrive with correct amplitude at the PCB coax input terminal from the transceiver turning unit, the failure lies within the input amplifier/digitizer circuits of the T65800814-11 board. If no signal arrives at the input terminal, trace the issue back to the interswitch unit, slip-rings, or transceiver receiver PCB.

Can you ship this board directly to a ship at port or drydock with urgent customs clearance?

Yes. Marine spare parts are shipped with complete commercial invoices, HS marine classification codes, and Air Waybills clearly marked “Urgent Vessel Spares – In Transit for M/V [Ship Name]” to facilitate immediate priority customs processing and delivery direct to your vessel’s agent at any global port.