NMEA Buffer Expander Distributor Splitter Multiplexer Combiner
What is NMEA buffer?
The NMEA buffer is used to distribute NMEA data communicating between navigation equipments.
The NMEA output of a device can be connected to a maximum of one or two devices.
NMEA buffer should be used to distribute data to more devices. We have designed the following NMEA buffers with different features.
NM-2128 NMEA BUFFER DUAL AUTO SWITCH 2 IN / 8 OUT
The NM-2128 NMEA distributor has two independent isolated data inputs and can distribute data to up to eight outputs. The NM-2128 features three operating modes, auto-switching mode, manual-dual mode and combiner mode.
In automatic mode, priority belongs to the first data input. If the NMEA data on the first input is lost, it automatically switches to the second data input.
In dual mode the distributor can be used as two independent distributor with one input and four outputs.
In combiner mode, it combines data from two inputs and sends it to eight outputs. It also calculates checksum for each NMEA sentence and indicates if error.
Special software solutions can be further developed on request.
Order Information
NM-2128-M-1 Manual Mode: 1 Input 8 Outputs.
NM-2128-M-2 Manual-Dual Mode: 1 Input 8 Outputs. Dual mode: Operate as two independent buffers with 1 input and 4 outputs.
NM-2128-A Auto Switch Mode: If input NMEA 1 is lost for 20 seconds the buffer will automatically switch to NMEA input 2.
NM-2128-C Combiner Mode: It combines data from two inputs and sends it to eight outputs.
| Technical Specifications | |
|---|---|
| Supply Voltage | Isolated 9-32VDC power supply Internal resetable Fuse Reversed polarity protection |
| Input | 2 X Independent galvanic isolated (RS232-RS422-RS485) |
| Output | 2 X 4 RS422 RS485 |
| Speed | 4800, 38400, 115200 bps |
| Protocol | NMEA0183, IEC61162 |
| Optional | Auto Switching / Manual Mode Automatic input signal detection and channel selection NMEA Combiner – Combining 2 channels and sending output Checksum calculation each NMEA sentence and Error Indicator Configurable custom software for your needs |
| Case-Dimensions | ABS DIN Rail Mount Box 105 x 86 x 58 |
NM-2028 NMEA BUFFER DUAL 2 IN / 8 OUT
The NM-2028 NMEA distributor has two independent isolated data inputs and can distribute data to up to eight outputs.The NM-2028 features two operating modes, single mode and dual mode. In dual mode the distributor can be used as two independent distributor with one input and four outputs. In single mode, data from one input and distribute it to eight outputs.
| Technical Specifications | |
|---|---|
| Supply Voltage | Isolated 9-32VDC power supply Reversed polarity protection |
| Input | 2 X Independent galvanic isolated |
| Output | 2 X 4 RS422, 1 X 8 RS422 |
| Speed | 4800, 38400, 115200 bps |
| Protocol | NMEA0183, IEC61162 |
| Optional | Single Mode / Dual Mode |
| Case-Dimensions | ABS DIN Rail Mount Box 105 x 86 x 58 |
NM-11 NMEA BUFFER
| Technical Specifications | |
|---|---|
| Supply Voltage | 9-32VDC |
| Current Consumption | 100mA |
| Input | 1 galvanic isolated |
| Outputs | 4 x RS-422 RS-485 |
| Speed | 4800 – 38400 bps |
| Protocol | NMEA0183 IEC61162 |
Recommend NM-2128.
NM-18 NMEA BUFFER
| Technical Specifications | |
|---|---|
| Supply Voltage | 9-32VDC |
| Current Consumption | 150mA |
| Input | 1 galvanic isolated |
| Outputs | 8 x RS-422 RS-485 |
| Speed | 4800 – 38400 bps |
| Protocol | NMEA0183, IEC61162 |
Recommend NM-2128.
AEP MP2x8i NMEA Buffer
| Technical Specifications | |
|---|---|
| Number of input ports | 2 (RS232 or RS422) Opto isolated |
| Number of output ports | 8 (RS422) |
| Input/output speed (baud rate) | 4800 to 230400 bps |
| Power Supply | Isolated 9-36VDC Reverse polarity input protection Short circuit output protection |
| Optional | Auto Switching Mode Dual (Independent) Mode |
| Power consumption | Typical 0,6 W at 24 VDC |
| Mounting | Wall mount (using four screws) |