... Display Modes: Head-up, Course-up*, True motion** *Heading input required **Heading and speed inputs required3. Range Scales (nm): ... , or Continuous5. Interface (NEMA 0183 format) --: any talker (menu selection): Input $--APB, $--BWC, $--BWR, $--DBK, $--DBS, $--DBT, $--DPT, $--GGA, ... Bearing, L/L, Speed/Course, ROT, CPA/ TCPA (AIS data input required)Environment Temperature: -15°C to + 55°C (Display ...