Raymarine Quantum 2 Q24D E70498 wiring diagram

Quantum 2 Q24D, E70498, is a Doppler radar radome for compatible Raymarine displays. Its radar data can travel over RayNet or Wi-Fi. Wi-Fi removes the data cable only; the scanner still needs its own DC power cable. Heading, speed and display compatibility also affect the available tracking functions.

The scanner accepts nominal 12/24 V, within 10.8–31.2 V at its connection. The manual specifies a 5 A inline fuse or 3 A thermal breaker. Follow the power-cable extension table for the chosen nominal voltage and route, rather than assuming the same cable size is suitable for both 12 V and 24 V. Connect red positive and black negative; the radar's supplied power cable has no separate drain conductor.

Published power is 17 W maximum transmitting, 7 W standby and 2 W in Wi-Fi sleep. The catalog's approximately 1.42 A is the explicit calculation 17 W / 12 V, not a current measured at every supply voltage. No startup surge is published here. Terminal limits are planning bounds from the specified protection, not connector test ratings.

Choose a supported mounting surface and a position with a clear radar view, observing the manual's RF exclusion and compass-clearance requirements. Account for people using decks or platforms near the scanner beam. Follow the permitted fastener engagement and mounting orientation; an overlong fixing can damage the scanner. Support the cable and seal deck penetrations without compromising its connectors.

If using Wi-Fi, record the scanner credentials before installation and check link quality at the intended mounting position. Mast structure and other obstructions can impair the link. If using RayNet, follow the supported network arrangement and protect unused connectors with their caps.

Confirm the radar is discovered by a compatible display and can enter standby and transmit. Check supply voltage at the scanner during operation, not merely at the switch panel. Complete the bearing-alignment procedure using a suitable fixed target, and verify the source and quality of heading/speed data before depending on Doppler or target tracking.

A powered scanner that is not discovered calls for checking pairing credentials, network cabling and software compatibility. Intermittent resets call for checking voltage drop and connector corrosion. Poor target alignment calls for calibration and sensor checks. Isolate scanner power before servicing or entering the defined exposure area; a display menu alone is not physical electrical isolation.

Quantum installation instructions, Rev 6: installation and location chapters, power pp. 54–57 and electrical specifications p. 79. The full PDF is downloaded and hashed in the marine ledger. The power-only catalog symbol does not model radio coverage or network traffic.