Garmin GTN 635 Installation Manual page 72

5.2.10.1 OBS ANNUNCIATE*
The OBS ANNUNCIATE* output is driven to indicate GPS OBS mode of operation. This output is active
when the OBS annunciation is on the display.
5.2.10.2 SUSP ANNUNCIATE (GTN 650 Only)
The SUSP ANNUNCIATE* output is driven to indicate GPS suspend mode of operation. This output is
active when the SUSP annunciation is on the display.
5.2.10.3 GPS ANNUNCIATE* (GTN 650 Only)
The GPS ANNUNCIATE* output is driven when the unit is configured with a single CDI/HSI and the
GPS data is being displayed on the CDI/HSI. This output parallels the GPS annunciation on the display.
Page 5-16 GTN 625/635/650 TSO Installation Manual
Rev. C 190-01004-02