Description
Key Technical Specifications
- Model: 340.
- Brand: Sperry Marine.
- Product type: Marine radar system / display.
- Display size: 340 mm PPI.
- Configuration: Available in X-band and S-band versions.
- Application: Bridge navigation and collision avoidance.
- Type approval: Listed for compliance with IEC 62388 and IEC 62288 in VisionMaster FT literature.
- Display formats: Deck Standing 340, Desktop 340, Kit Format 340.
- Compatibility note: Verify exact radar family, transceiver, and cabinet revision before ordering.
- Condition: Refurbished or used, depending on available stock.
Product Introduction
Sperry Marine 340 refers to a 340 mm marine radar platform in the VisionMaster family. It is used for bridge navigation, target tracking, and collision avoidance, with both X-band and S-band configurations shown in published product literature.
This is the kind of system buyers source when they need a direct replacement or an upgrade path for an installed bridge setup. Verify the exact display format, transceiver type, and cabinet revision before purchase, because the 340 designation appears across multiple Sperry Marine configurations.
- 340
- 340
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Display powers up but no usable radar image | Transceiver fault, antenna issue, or wrong radar band | ✅ High | Confirm transmit status and check whether the antenna is rotating | Verify the full radar chain before replacing the display |
| Screen is dark or unstable | Power supply issue, backlight failure, or cabling fault | ✅ High | Measure input power and inspect display cabling | Check power and connector seating first |
| Target returns are weak or missing | Antenna, receiver, or modulator issue | ❌ Low | Compare performance with a known-good unit or diagnostic mode | The display is often not the root cause |
| Radar alarms or faults appear after startup | Configuration mismatch or unsupported revision | ✅ High | Check setup pages and compare system revision tags | Match the installed system version before swapping parts |
| Touch or control inputs do not respond | HMI interface issue, keypad fault, or cabling problem | ✅ Medium | Test control inputs and inspect the control panel connector | Reseat and verify before replacing hardware |
| System works intermittently during vessel vibration | Loose mount, connector wear, or aging board | ✅ Medium | Inspect the mount and recheck all connectors under load | Secure the unit and retest before condemning it |
Contact technical support with photos of the label, connector side, and any diagnostic logs if the fault is still unclear.
Frequently Asked Questions
Q: Is “340” a display size or a full radar model?
A: It is a 340 mm marine radar platform designation in Sperry Marine’s VisionMaster family, and the same number appears in several display configurations.
Q: Is this an X-band or S-band unit?
A: It can be configured either way, depending on the system. Do not assume band compatibility from the “340” name alone
Q: Is this new, used, or refurbished stock?
A: Stock can vary by seller, and the listings I found include refurbished and used examples. Confirm the exact condition before ordering.
Q: Can I replace my old Sperry display with this unit?
A: Possibly, but only if the transceiver, cabinet, and revision match. Verify the installed system before buying, because the 340 designation is used across multiple bridge configurations.
Q: Does it meet marine type-approval standards?
A: VisionMaster FT literature lists IEC 62388 and IEC 62288 compliance when the performance monitor is fitted. That does not remove the need to confirm the exact configuration you are buying.
Q: What is the main installation risk?
A: The biggest risk is ordering the wrong 340 variant. ❗Do not rely on the display size alone; confirm band, cabinet style, and revision before power-up.
Q: Why do some listings say “VisionMaster FT 340 Radar”?
A: Because “340” is used across VisionMaster FT radar and display variants in Sperry Marine materials. That is why exact part identification matters before a purchase.



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