Setup guide

Dedicated Micros ©2006
21
DS2 Network Guide
Advanced Conguration
How to Congure Prole Recording
The unit supports MultiMode recording. This offers the ability to set different recording rates,
resolutions and compression formats across scheduled, normal and alarm modes for each individual
camera.
By varying the quality, bit rate and le size of the recorded images using the MultiMode function can
increase recording capabilities of the unit.
MultiMode offers:
Ability to set different recording resolutions including 720x512, 704x256, 352x256 and
176x128.
Ability to set MPEG or JPEG compression recording.
Ability to set PPS or millisecond recording rate per camera.
Dynamically switchable resolution when switching from Normal to Event recording.
Dynamically switchable compression between MPEG4 and JPEG from Normal to Event
recording.
Note: It is recommended when conguring the record settings to use the Standard Record
Schedule option or the MultiMode option but not a combination or the two. Standard
Recording will divide the record settings across all inputs selected for recording; MultiMode
allows the record settings for each camera to be individually congured.
Note: It is recommended that the Prole Wizard be used when conguring Prole recording.
Notes on MultiMode Recording
Pre-Alarm Recording
If a unit is set up to record MPEG4 for normal recording and JPEG for Events, the pre-alarm image
stored in RAM will be saved as JPEG at the same resolution as the Event images. If no changes are
made to the standard conguration, the unit will still ‘Plug and Play’ at 2CIF resolution, JPEG Normal
and Event recording at 6pps across all cameras, using Std rate recording.
JPEG vs MPEG recording
MPEG compression records the changes between the two sequential images (known as temporal
redundancy) and then calculates the difference between two frames and supplies the information
required to complete an image (called motion estimation). MPEG uses I-frames (complete new
image frames) at a user dened rate to allow easy verication. These two technologies combine to
achieve a greater level of data compression than can be normally achieved with JPEG compression.
The user must appreciate the difference between the quality denitions used within this section.
Each camera must use either Std Recording or Prole recording for each part of the schedule, Day,
Night and Weekend. Cameras using the Std recording setting will use the same, common setting
which is dened at the top of the rst page.
Prole denitions are editable by the user, up to 12 JPEG and 12 MPEG user dened specications
can be saved and used within the Camera Setup.
To congure prole recording:
1. Select the Camera and Record Setup menu.
2. From the drop down list within the Record Proles section select Prole for the cameras
to be included in prole recording.
Note: If the schedule option has been enabled select Prole for all three operating modes (Day,
Night, Weekend).