HIKVISION DS-7108HI series, Руководство пользователя, Страница: 61 / 108

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Note: If you change this resolution option, please reboot DVR to make it into effective.
Bit Rate Type:
DVR will use the fixed bit rate to compress image. The bit rate size is defined in “Bit Rate”
option. In this case, we can calculate the recorded file size and network bandwidth that we need.
The max bit rate selection has relations to resolution. If you select high resolution, you must
select high bit rate. For CIF resolution, the typical max bit rate is 384K-768Kbps. For DCIF
resolution, the typical bit rate is 512K-1Mbps. For 4CIF resolution, the typical bit rate is
1Mbps-1.5Mbps. Of course, you will select the proper max bit rate based on the camera,
background and image quality requirement.
Bit rate: You can select bit rate size for fixed bit rate type. It is the same as “Max Bit Rate”.
Frame Rate: Frame per second. Options are: 25 (PAL)/30(NTSC) 20, 16, 12, 10, 8, 6, 4, 2, 1
For low frame rate, you can select low bit rate size.
PreRecord Time: When you enable motion detection recording or external alarm recording,
you can define prerecord time. The options are: No PreRecord, 5 Seconds (default selection), 10
Seconds, 15 Seconds, 20 Seconds, 25 Seconds, 30 Seconds and Max PreRecord.
MaxPreRecord is to save all data in PreRecord buffer. The PreRecord time is related with bit
rate. The lower bit rate, the longer PreRecord time is.
If the bit rate (Max bit rate) is very low, and you select “PreRecord Time” as “5 Seconds”,
maybe the actual perrecord time is more than 5 seconds. On the other side, if the bit rate is high,
and set “PreRecord Time” as “30 Seconds”, the actual prerecord time maybe is less than 30
seconds.
PostRecord Time: When external alarm or motion alarm is stopped, DVR will continue
recording time. The options are: 5 Seconds (default), 10 Seconds, 30 Seconds, 1 Minute, 2
Minutes, 5 Minutes and 10 Minutes.
Enable Rec: Enable or disable selected camera record function. “
×
” means disable and “
9
”
means enable.
Schedule: When you enable recording function, you can setup recording schedule.
Note: When the camera’s recording schedule is modified, you must reboot DVR to make it
into effective.
All day recording setup:
Step 1: Enter into recording schedule menu
In recording menu, use
【
ENTER
】
or
【
EDIT
】
key to enable record function (“
9
” flag), press
“Schedule” button to enter into recording schedule menu.
f
5.21 Recording schedule setup
Step 2: Select one day and enable all day recording option
For “Day” item, there are options: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
and Sunday. Use
【↑】 【↓】
keys to select one day. Move “Active Frame” to the check box on the
right side of “All Day” item, press
【
ENTER
】
or
【
EDIT
】
key to enable “All Day” option. “
×
”
means disable and “
9
” means enable.
Step 3: Record type