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2.1 Keys and signals
PC Send: <0x41>, <0x01>, <Key Value>, <0x4f>
< The value for a specific front panel key >
KEY_PLAY 1
KEY_STOP 3
KEY_PAUSE 4
KEY_POWER 5
KEY_REC 6
KEY_SETUP 7
KEY_ENTER 8
SET_DEFAULT 9 (reserved)
KEY_SEARCH 10
KEY_DISPLAY 11
KEY_UP 13
KEY_DOWN 14
KEY_LEFT 15
KEY_RIGHT 16
KEY_SCAN_F 19
KEY_SCAN_R 20
KEY_RETURN 21
KEY_MONITOR 36
2.2 COMMAND Types
2.2.0 Command (Main Category=0x02)
2.2.1 Handshake (Second Category=0x01)
PC Request: <0x41>, <0x02>, <0x01>, <0x00>, <0x4f>
DVR Response: <0x41>, <0x02>, <0x01>, <0x00>, <0x4f>
2.2.2 Request Time (Second Category=0x02)
PC Request: <0x41>, <0x02>, <0x02>, <0x00>, <0x4f>
DVR Response: <0x41>, <0x02>, <0x02>, <0x07>, <7 Time Value >, <0x4f>
The following case is an illustration of < 7 Time Value>
2001/06/20 17:05:00 = <0xD1>,<0x07>, <0x06>,<0x14>, <0x11>,<0x05>, <0x00>
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2.2.3 Set Time (Second Category=0x02)
PC Request: <0x41>, <0x02>, <0x02>, <0x07>, < 7 Time Value >, <0x4f>
The following case is an illustration of < 7 Time Value>
2001/06/20 17:05:00 = <0xD1>, <0x07>, <0x06>, <0x14>, <0x11>, <0x05>, <0x00>
DVR Act: Changing the time and date.
2.2.4 Set Setup Values (Second Category=0x04)
PC Request: <0x41>, <0x02>, <0x04>, <n+1>, <Location>, < Value 1 >, <Value 2>,...,
< Value n>, <0x4f>
For the descriptions of setup value, please see section 2.2.5.
NOTE: This command must be executed in states other than REC, Playback, and Play
idle mode. (Refer to 2.2.6)
2.2.5 Request State (Second Category=0x05)
PC Request: <0x41>, <0x02>, <0x05>, <0x00>, <0x4f>
DVR Response: <0x41>, <0x02>, <0x05>, <0x01>, <System State = 0..>, <0x4f>
Description of <System State>:
STATE_STOP 0
STATE_REC 1
STATE_PREREC 2
STATE_PLAY 3
STATE_MENU 4
STATE_PLAYIDLE 5
STATE_SETUP 6..16
STATE_SEARCH 7..11
STATE_BACKUP 13..15
STATE_ALARMLIST 17
STATE_LOGLIST 18
STATE_RESTART 21
2.2.6 Time Search
PC send: <0x41>, <0x02>, <0x0b>, <0x06>, <6 Bytes Date/Time>, <0x4f> where < 6 bytes
Date/Time >, = year (2 bytes, =LowByte + HighByte*256), month ( 1 byte), day (1 byte), hour(1
byte),min(1 byte)
Example: to search 06/12/2002 17:00 the Date/Time =
<0xd2>,<0x07><0x06>,<0x0b>,<0x11>,<0x00> where 2002= 210(=0xd2) + 7(=0x07) *256
NOTE: The DVR accepts RS-232 time search commands only under the live or playback
Mode.
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