TV One C2-6204 handleiding

Handleiding

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FUNCTION values as they sent). If no message is received back within 1 second, there is likely to be a

hardware communication problem (or wrong baud rate, etc.).

If absolutely required, to simplify programming the user may send packets one after the other with

around 100ms (100 milliseconds) between each one. However, this will not work for all packets (such as

Zooming into Still Images / Testcards or changing Logos) since this will cause the unit’s micro-controller to

be busy, so the user must experiment and satisfy themselves that this is possible.

Packet format

Below is a representation of data bytes in a single packet for a ‘Write’ to the unit to set a value:

SOP

CMD

CHA

WINDOW

OUTPUT

/ FUNCTION

FUNCTION

PAYLOAD x 3

CS

EOP

Below is a representation of data bytes in a single packet for a ‘Read’ to the unit to get a value:

SOP

CMD

CHA

WINDOW

OUTPUT

/ FUNCTION

FUNCTION

CS

EOP

The table below details the function of each part of the packet:

Packet part

Function

SOP

(Start of

packet)

This is always the ASCII letter 'F' to indicate the packet start.

CMD

(Command)

ASCII-hex byte to indicate the type of command being sent.

Each bit in the byte has a different function. Currently only the following bits are defined:

Bit 7 = Write (0) or Read (1) request. Messages from the unit are always Writes.

Bit 6 = ACK bit. Should be set to 0 for messages to the unit. ACK=1 returned means

message was okay. ACK=0 returned means an error was present in the message.

Bit 5 = 0 Reserved for future use.

Bit 4 = 0 Reserved for future use.

Bit 3 = 0 Reserved for future use.

Bit 2 = 1 This bit *must* be set.

Bit 1 = 0 Reserved for future use.

Bit 0 = 0 Reserved for future use.

CHA

(Channel)

SOURCE

or

This byte has multiple uses, and defaults to 0 unless used for:

CHA

When a channel number is used in the Adjust Sources section (see later).

SOURCE

Byte to indicate the source channel to be altered (if appropriate).

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Bekijk gratis de handleiding van TV One C2-6204, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.

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