Cable, 0.5 m (19.7 in), PS-5a to Garmin GPS with round 4-pin connector and EW Model D Barograph/Flight Recorder, Includes DB-9f (9-pin female) connector for the PS-5a, 4-pin round connector for the Garmin GPS, and DB-9m connector for the EW (which has a DB-9f).  The PS-5a provides 12 V power and ground leads for the Garmin GPS and the EW Model D.  A panel mounted "Fly / Declare" switch is used to to change the way the PDA, GPS and EW Model D are connected.  In "Fly" mode, the GPS data goes from the Garmin to both the EW Model D and the PS-5a (and on to the PDA).  In "Declare" mode the PDA's transmit and receive lines are connected directly to the EW Model D for downloading flight logs and uploading task declarations.