Appendix C: Serial Interface Specifications

3. Remote Control Protocol

A computer or a terminal can be used to control the unit by sending the packet as following.

1-1. Sample control code packets

Example1 : A packet that send "REC" key to DVR (ID=5)

0x85

(length)

0x00

(Receiver ID high byte)

0x05

(Receiver ID low byte)

0x4B

(OPcode = key )

0x08

(DATA1 = "Rec" keycode )

0x5D

(checksum)

Example2 : A packet that send "PAUSE" key to DVR (ID=4999)

0x85

(length)

0x27

(Receiver ID high byte)

0x07

(Receiver ID low byte)

0x4B

(OPcode = key )

0x0C

(DATA1 = "Pause" keycode )

0x0A

(checksum)

Example3 : A packet that send "PLAY" key to all DVR (broadcast)

0x85

(length)

0x7f

(Receiver ID high byte)

0x7f

(Receiver ID low byte)

0x4B

(OPcode = key )

0x0B

(DATA1 = "Play" keycode )

0x59

(checksum)

57

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EverFocus EDSR-900, EDSR-1600 instruction manual Remote Control Protocol, Sample control code packets