BBG-Alarm

The BBG-Alarm is a NMEA data stream monitor that triggers an alarm if data is corrupt or absent. Baud rate selectable, & alarm triggers on timeout.

The isolated serial input supports both RS-422 and RS-232, with a selectable baud rate configured via the onboard DIP switch (SW1). A non-isolated serial output is also available but is not used in the standard configuration.

The unit features a Double Pole Double Throw (DPDT) relay output, with a Common (C) contact and both Normally Open (NO) and Normally Closed (NC) contacts for each of the two (2) relay poles.

The unit monitors the serial input for properly formatted NMEA messages as configured by SW2 and validates the checksum if present. It will close the Normally Open (NO) contacts when valid NMEA messages are received within the configured delay period (see SW1). If no valid message is received within the set delay period, the unit will open the NO contacts.