DIVIMATH HDZero - Video Source; Hdzero Digital Receiver; Analog Input

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Video Source
The HDZero goggle can display video from any of 4 sources:
- Built-in HDZero digital receiver
- AV in
- Expansion Module in (such as with an analog video receiver)
- HDMI in
HDZero Digital Receiver
The “Scan Now” option on the main menu will scan channels R1-R8, F2, and F4 for an HDZero
video signal. It will:
- Lock on to the channel if there is only one valid channel with a signal, or
- Let you choose between the channels if it has found two or more channels, or
- Continue to scan after 5 seconds if no signal is detected, or
- Wait for a long press of the Enter button to exit to the main menu
The HDZero goggle provides the lowest and fixed latency when used with the HDZero Nano 90
camera.
Analog Input
The HDZero goggle takes analog video input from either the AV input jack or the external
Expansion Module (not included, available on the HDZero Shop). The goggle processes analog
video from either of these inputs in the same way, but the Expansion Module provides an easy
plug-and-play experience if you are using a standard FPV analog module.
The HDZero goggle uses a novel approach to process the analog input, resulting in improved
analog video quality:
- It uses a video decoder with an adaptive comb filter to separate Y/C from the composite
video;
- It uses a deinterlacer to convert fields to frames, instead of doubling the interlaced
lines;
- It uses an upscaler to record and display the video;