Appendix C: The meaning of some abbreviations
Letters
Meaning
D
720*576(PAL)/720*480(NTSC)
C
360*288(PAL)/720*240(NTSC)
U
Unlock
MD
Motion detection
PW
An event of power on occurred
AL
Alarm
HD
An event concerning HDD occurred
SY
An event of system setup or system
reset
DVR
Digital video recorder
Letters
Meaning
H
720*288(PAL)/720*240(NTSC)
NT
A network event
L
lock
SD
Sensor detection
VL
Video loss
DB
The data base recurred or united
TM
Time change
FL
A file was created or deleted
DEL
File was deleted
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