Cobalt Co9992-4ENC-4K-HEVC Software-Defined Broadcast Encoder - Manual (Page 15)

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The 9992-ENC board has other LEDs that may or may not be illuminated. They are intended for
engineering debug only.
Front Switches
The 9992-ENC has three pushbutton-type switches in the front, just below the LEDs, as depicted
below. Their operation is as follows:

Reset Switch: Pressing this pushbutton switch causes the card to reset.

Safe Boot: This switch is used to recover the board in the unlikely case of a corrupted or
broken firmware update. In most cases, the 9992-ENC will detect the error and
automatically fall back into the factory-default firmware load. If it does not, pull the card
out, press and hold this switch, and push the card back into the frame while still holding
the switch. You can release the switch once the green and red Status LEDs light up
simultaneously. This action causes the card to revert to the factory-default firmware and
remove the persistent configuration.

SDMMC BOOT: DO NOT USE. For engineering use only.