CYP CPHD-V4L, Operation Manual, Page: 47 / 76

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6.8 Serial Commands
Before using these commands, please read the following:
Syntax:
All commands MUST start with the “$” character or the command
will not be recognized by the unit. Commands must end with a carriage
return (0x0D). Use of a line feed (0x0A) is optional. Commands are not case-
sensitive.
Responses: The unit will respond to most commands with a repeat of
the original command followed by the specified parameters or requested
information except where otherwise noted. If an invalid command is entered,
the unit will respond with “$err”. All unit responses end with a carriage return
(0x0D) + line feed (0x0A).
Cautions: Only one command may be processed at a time. Additional
commands should not be sent until the response from the previous command
has been received.
COMMAND
Description and Parameters
$?

Show the full command list.
$HELP

Show the full command list.
$4K_TO_1080P N1

Set the 4K downscaling mode.
Available values for N1 :
OFF [No downscaling]
ON_RGB [Downscale 4K to 1080p, RGB color]
ON_YUV [Downscale 4K to 1080p, YUV color]
$4K_TO_1080P?

Show the current 4K downscaling mode