The Actisense NMEA Multiplexer / Combiner allows connection of up to four NMEA (National Marine Electronics Association) inputs to be multiplexed/combined in to one NMEA output.
This approach offers these major advantages:
Electrical spike protection is provided as standard on all four input channels using opto-isolators. This protects any connected equipment from most system faults; a particularly valuable benefit as equipment requiring the most data, such as a PC or chart plotter, is often the most expensive to repair or replace.
The NDC-2 Data Multiplexer contains highly intelligent software that manages the multiplexing and filtering operation, allowing every input to have a chance of its data reaching the combined NMEA output. Tested up to and beyond a combined 300% loading of the four inputs.
- It enables the vessel owner complete access to all NMEA data sources, instead of the standard one device
- Each NMEA input device is Opto-isolated from all other NMEA device in the system
- Any NMEA data not required can be easily filtered out to reduce the total amount of NMEA data in the system
- Each input and output baud rate can be changed to match the requirements of connected devices
| Supply voltage | 8 | 35 | V | |
| Supply current | Supply voltage 12v (no load) | 110 | 120 | mA |
|
|
Supply voltage 24v (no load)
|
70
|
75
|
mA
|
| NMEA in/out | ||||
| Input voltage tolerance | Continuous operation
Short Term Operation (<1 sec) |
-15
-35 |
+15
+35 |
V
V |
| Differential input voltage | Required level for data to be detected | 1.8 | – | V |
| Output current | RS485/RS422 compatible | – | 32 | mA |
| Input to output protection | Full Galvanic Opto-isolation protection | – | 2000 | V |
| Baud rate | Configurable Baud rate | 4800 | 38400 | bps |
| Data propagation delay
|
|
1
|
100
|
msec
|
| RS232 in/out | ||||
| Input voltage tolerance | -15 | +15 | V | |
| Input voltage threshold | Logical LOW
Logical HIGH |
0.8
1.7 |
1.2
2.8 |
V
V |
| Output resistance | Output voltage swing +/-2V | 300 | – | ohms |
| Baud rate | Configurable Baud rate | 4800 | 115200 | bps |
| Data propagation delay
|
|
1
|
100
|
msec
|
| General | ||||
| Ambient temperature | -20 | +70 | °C |
The Actisense NMEA Multiplexer / Combiner allows connection of up to four NMEA (National Marine Electronics Association) inputs to be multiplexed/combined in to one NMEA output.
This approach offers these major advantages:
Electrical spike protection is provided as standard on all four input channels using opto-isolators. This protects any connected equipment from most system faults; a particularly valuable benefit as equipment requiring the most data, such as a PC or chart plotter, is often the most expensive to repair or replace.
The NDC-2 Data Multiplexer contains highly intelligent software that manages the multiplexing and filtering operation, allowing every input to have a chance of its data reaching the combined NMEA output. Tested up to and beyond a combined 300% loading of the four inputs.
- It enables the vessel owner complete access to all NMEA data sources, instead of the standard one device
- Each NMEA input device is Opto-isolated from all other NMEA device in the system
- Any NMEA data not required can be easily filtered out to reduce the total amount of NMEA data in the system
- Each input and output baud rate can be changed to match the requirements of connected devices
| Supply voltage | 8 | 35 | V | |
| Supply current | Supply voltage 12v (no load) | 110 | 120 | mA |
|
|
Supply voltage 24v (no load)
|
70
|
75
|
mA
|
| NMEA in/out | ||||
| Input voltage tolerance | Continuous operation
Short Term Operation (<1 sec) |
-15
-35 |
+15
+35 |
V
V |
| Differential input voltage | Required level for data to be detected | 1.8 | – | V |
| Output current | RS485/RS422 compatible | – | 32 | mA |
| Input to output protection | Full Galvanic Opto-isolation protection | – | 2000 | V |
| Baud rate | Configurable Baud rate | 4800 | 38400 | bps |
| Data propagation delay
|
|
1
|
100
|
msec
|
| RS232 in/out | ||||
| Input voltage tolerance | -15 | +15 | V | |
| Input voltage threshold | Logical LOW
Logical HIGH |
0.8
1.7 |
1.2
2.8 |
V
V |
| Output resistance | Output voltage swing +/-2V | 300 | – | ohms |
| Baud rate | Configurable Baud rate | 4800 | 115200 | bps |
| Data propagation delay
|
|
1
|
100
|
msec
|
| General | ||||
| Ambient temperature | -20 | +70 | °C |