Atrix DVRY0803S Manual do Utilizador descarregar pdf (Página 74)

STANDALONE DVR USER MANUAL

Si =（D*3600）/（8*1024）= D * 0.439453125 MB

Step 2: Confirm the storage time length, assume “T” = hours. The total capacity of the hard disk needed in selected channel

for T hours “St” is:

St = T * S1

Step 3: Confirm the total numbers of channels, assume “n” = channel numbers. The total maximum capacity of the hard

disk needed “Sc” is:

Sc = S1 + S2 + … + Sn

Alarm Recording:

Assume the alarming rate is α%. The capacity of the hard disk needed in alarm recording “Sa” is:

Sa = Sc * α%

2) Calculate the compression bit rate for recording T hours.

Timing Recording

Step 1: Assume the capacity of the hard disk is “S”, the total numbers of the channel as “n”. The capacity of hard disk

needed per channel “Di” is:

Di = S / n

Step 2: Assume the total recording time is “T” hours. The capacity of the hard disk needed per hour per channel “Dt” is:

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Atrix DVRY0803S Manual do Utilizador Página 74