Delta Embedded DVR User Manual download pdf (Page 80)



 79/85

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Coaxialcableconnector,compositevideosignalsoraudiosignals,commonlyuse75ohmconnectors.

BNCweldingandshouldpayattentiontoweldstrengthandremoveburrs,orthesignalwireand

shield’scontactwillleadtoasubstantialattenuationofsignalstrength

7.2. HDDCAPACITYCALCULATION

7.2.1. REFERENCEOFHDDCAPACITYCALCULATION

ThefirsttimeinstallDVR,pleasecheckiftheHDDhasinstalled.

ThecapacityoftheHDD

ThereisnolimitationofcapacityofsingleHDDtoDVR,pleasechoosetheHDDaccordingtotheVedios’

savingtime.

ThechooseoftheCapacity

ComputationalformulaofHDDCapacity:

WholeHDDCapacity=numberofthechannels×timeinneed(hour)×spentofHDDCapacityperhour

(MB/hour)

Similarlywecanhavetheformulaofrecordingtime:

annelAmountofChhrrHourcupationpeCapacityOc

pacityTotalHDDCa

hourtimeR

）（

MB/

ecording



Note:1GB=1000MB,not1GiB=1024MiB,soHDDcapacityshowninBaseConfigurationunder

HDDManagementlessthanrealmarked.

Filesizeperhour(CBR).

BitRate File BitRate File BitRate File

96k 42M 320k 140M 896k 393M

128k 56M 384k 168M 1.00M 450M

160k 70M 448k 196M 1.25M 562M

192k 84M 512k 225M 1.50M 675M

224k 98M 640k 281M 1.75M 787M

256k 112M 768k 337M 2.00M 900M

FORM7‐1RECORDFILESIZE

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Delta Embedded DVR User Manual Page 80