Many Garmin flight decks have the option for an external video input from an EVS, FLIR, or Camera. This write up is specific to the Garmin G600.
Accepted Signal Types
The G600 will accept video from any standard NTSC/PAL video source. These inputs go but a number of names such as: NTSC, PAL, CVBS, Composite, RS-170, RS-170a, and Analog.
- Signal Type – Analog 75 ohm, 1V p-p
- Standard – RS-170a (RS-170 is the a video standard that was superseded in the 1950’s, but likely still compatible with the input)
- Video Type – Composite or CVBS, meaning the Chroma(Color) and Luma(Brightness) signals are combined into one.
- Video Standard – NTSC or PAL are more specific descriptions defining the number of lines and frame rate. NTSC is used in North America, and PAL is used elsewhere, but both are compatible with the G600.
The Garmin G600 is compatible with all Rugged Video Airborne Cameras except the HD29.
The G600 does require an unlock card in order to accept and display an analog source. This can be purchased from Garmin or a reseller. The part number is 010-00769-61 and at time of publication was priced at $1495.00 USD.
The input can be connected to the G600 using the 37 Pin D-SUB connector labeled J6201. The video input is PIN 1 and the ground is PIN 22. The ground is common with other I/O.
Possible Interference Issues
Depending on the aircraft its possible that you will have ground loop noise in the signal. Its good practice to use a ground loop isolater on the video input. Those can be purchased from aircraft spruce or Amazon. Ground loop noise will appear as a wave through the video that is more or less constant. There is also the possibility of radio interference from the com system. This usually only occurs when transmitting. To mitigate this possibility try to run all connections behind a ground plane and always pass antenna cables at a 90 degree angle.