STANDALONE DVR USER MANUAL
69
Dt = Di / T
Step 3: The bit rate of all the channels “Dc” is:
Dc = Dt *
（
8*1024
）
/ 3600 = Dt * 2.2756
（
Kbit/s
）
Alarm Recording
Step 1: Assume the alarming rate is
α
%, capacity of hard disk is “S”, the total numbers of the channel is “n”. The capacity
of hard disk needed per channel “Di” is:
Di =
（
S / n
）
*
α
%
Step 2: Assume the recording time length is T (hours). The capacity of hard disk needed per hour per channel “Dt” is:
Dt = Di / T
Step 3: The bit rate of all channels “Dc” is:
Dc = Dt *
（
8*1024
）
/ 3600 = Dt * 2.2756
（
Kbit/s
）
3
Default Values
Table VI-5 Default Values
Menu Options
in
menu Default
System LANGUAGE English
English
