New · Networked Data Multiplexer

DM882

8 in · 8 out · Ethernet · NMEA 2000

The DM882 is a fully networked, 8-input / 8-output serial data multiplexer with NMEA 2000 and Ethernet/UDP connectivity. It bridges legacy NMEA 0183, RS422, RS232, and current-loop devices to modern networked plotters, PCs, and mobile devices — all configurable from any web browser, with no software install on board.

Description

The DM882 carries forward the proven multiplexing core of the DM1210N and DM44 — flexible any-port-to-any-port routing, NMEA filtering by talker and formatter, sentence rate control, and full DC isolation between input supply, ground, inputs, and outputs — and adds a modern networked control plane: an Ethernet/UDP bridge for sending NMEA across the boat or ashore, an NMEA 2000 micro-C drop for direct integration with the latest sensors and displays, and a built-in web interface that replaces the legacy Windows configuration utility entirely.

Key features

8 fully-configurable serial ports (in and out)
Ethernet RJ45 with UDP send/receive
NMEA 2000 (NMEA 2K) drop interface
Built-in web configuration — no PC software required
Live transfer matrix with status indicators
Per-port simulation/test output for commissioning
Filtering of NMEA sentences by talker or formatter, per port
Flexible any-port-to-any-port routing
NMEA 0183 talker modification (in or out)
NMEA / CIF depth from trigger and bottom, or JRC trigger/clock/data
AD10 data from NMEA: VTG, VHW, HDG, HDM, HDT, etc.
100, 200, 400 or 800 PPNM to VTG/VHW
Automatic prioritised dual / tri input switching (GPS, sounder, heading)
NMEA sentence rate control — increase or decrease
Per-port baud rate, stop bits, parity, data bits
Baud rates up to 115200 for fast data transfer
Persistent configuration with reliable EEPROM storage
Concurrent multi-port transmission — non-blocking transfer engine
Furuno CIF conversion

Configuration — from any browser

The DM882's configuration interface is served from the device itself. Connect it to your network or directly to a laptop, point any modern web browser at the device, and you have full access to:

Per-port serial settings (baud rate, format, talker)
Transfer matrix with colour-coded routing status
NMEA sentence filtering — by talker, by formatter, per port
UDP send/receive endpoint configuration
NMEA 2000 PGN selection
Per-port simulation output for testing wiring
Live data view for diagnostics
Configuration backup and restore

No driver install, no proprietary Windows utility, no version-pinning to a specific PC — just a browser. Settings are persisted on the device and survive power cycles.

Specifications

Inputs

8 × Serial: Current loop, RS422, RS232
Digital: 0/5 V for Trig / Bottom / Selector

Outputs

8 × Serial: Current loop, RS422, RS232 per port
Current sink for PPNM / AD10 / Alarms

Network

1 × Ethernet RJ45 (UDP send/receive)
1 × NMEA 2000 micro-C drop

Power

11–35 VDC @ 50–250 mA
Full DC isolation between supply & outputs

Configuration

Built-in web interface
Accessed from any modern browser
No PC software required

Indicators

Power, Network link/activity
In and Out LED per serial port

Physical parameters

Enclosure	Anodised aluminium
Mounting	Bulkhead or desktop
Connectors	Plug-in screw terminal (serial), RJ45 (Ethernet), micro-C (NMEA 2000)
Operating voltage	11–35 VDC

Documentation

DM882 manual and flyer will be available on the Downloads page once finalised. For early-access documentation or to request a quote, please get in touch.

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