Signal expander for NMEA 0183 data

Signal expander for NMEA 0183 data

The DX28 Expander is a 2-channel signal splitter/amplifier for NMEA 0183 data signal distribution. It can be configured as a 1-input x 8-output expander, two 1-input x 4-output expanders, or an auto-switching expander. The two inputs are completely independent and can operate at the same baud rate or up to 38,400. The selectable auto-switching feature allows automatic switching to the AUXILIARY input when signal from the PRIMARY input is lost. A bi-color (green/red) status LED on each input shows data activity, and a third (yellow) LED provides 'overcurrent' fault indication.

Characteristics:

• Supply voltage 10-30 Vdc / 50 mA
• Input impedance 50 ohm
• Input sensitivity: 2 V differential
• Transmission speed: 38400 max.
• Output level (RS-422): 3.5 V typ. into 500 ohm
• No-load current: 20 mA
• Full load current: 100 mA
• Overcurrent indication: 100 mA
• Operating temperature: 0-50
• Humidity range: 0-100% (non-condensing)

Dimensions : 2.4' x 3.5' x 1.0'

Weight: 0.113 kg