<JLIP technical information>

Tuner command Tuner command data is below. They are used in 11 bytes included ID number of controlled device and check sum data. Parameters that is shown as 'xx' in the table and return data of each command are specified in the explanation under the table.

command

1st

2nd

3rd

4th

5th

6th

7th

8th

9th

10th

11th

return

param

Band select

0xff

0xff

(ID)

0x0a

0x40

0x71

xx

0x00

0x00

0x00

(sum)

#1

*1

Real ch select

0xff

0xff

(ID)

0x0a

0x42

xx

xx

xx

0x44

0x00

(sum)

#1

*2

Preset ch select

0xff

0xff

(ID)

0x0a

0x44

xx

xx

xx

0x7e

0x00

(sum)

#1

*3

Tuner mode req.

0xff

0xff

(ID)

0x0a

0x4e

0x20

0x00

0x00

0x00

0x00

(sum)

#1

Parameter *1: There are two selection of band that are terrestrial broadcast and satellite. 0x30: terrestrial broadcast(also, cable TV), 0x40: broadcast satellite *2: 'Real channel' means channel that is not a number displayed but a real number. Some devices for a part of region are available to use 'Preset channel select command' only.

	6th	7th	8th
ch UP	0x73	0x00	0x00
ch DOWN	0x63	0x00	0x00
ch direct set	0x71	xx	xx	*2-1

*2-1: channel number = (7th) x 100 + (8th) *3: 'Preset channel' means the channel number that is set by owner. There is a case that these numbers are already set in factory. Some devices for a part of region are available to use 'Preset channel select command' only.

	6th	7th	8th
ch UP	0x73	0x00	0x00
ch DOWN	0x63	0x00	0x00
ch direct set	0x71	xx	xx	*3-1

*3-1: channel number = (7th) x 100 + (8th) Return data (Detail is stated in a separate document.) #1: The return data of this command is called as 'Standard VTU (video tuner) return data' that is  included informations like a tuner receiving band or channel number.

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