User manual

5
Power Cord Requirements: The connector that plugs into the wall outlet must be a grounding-type male
plug designed for use in your region. It must have certification marks showing certification by an agency
in your region. The connector that plugs into the AC receptacle on the power supply must be an IEC 320,
sheet C13, female connector. See the following website for more information
http://kropla.com/electric2.htm.
Lithium Battery: This device contains a Lithium Battery. There is a risk of
explosion if the battery is replaced by an incorrect type. Dispose of used batteries
according to the vendor’s instructions and in accordance with local environmental
regulations.
Perchlorate Material: Special handling may apply. See
www.dtsc.ca.gov/hazardouswaste/perchlorate. This notice is required by California Code of Regulations,
Title 22, Division 4.5, Chapter 33: Best Management Practices for Perchlorate Materials. This device
includes a battery which contains perchlorate material.
Chapter 1 Introduction
1.1 Description
Developed on the basis of the latest encoding technology, the VP-4 allows the analog signal to be
digitized and then stored in hard disk or transmitted via network.
Adopting the latest embedded processor, the VP-4 provides more powerful capabilities in audio/video
encoding; standard 1U chassis design maintains easy installation; multiple network transmission
protocols supported; and code downloaded in FLASH ensures high stability and reliability of system
performance.
1.2 Features
Encoding
Support H.264 encoding standard at PS and RTP customized encapsulation formats, of which RTP
stream is used for transmission via network and PS stream for recording;
Support encoding at 4CIF, 2CIF, CIF and QCIF resolutions;
Dual stream encoding;
Either compound streams encoding or video stream encoding selectable; audio and video
synchronization during compound streams encoding.
Recording
 Multiple Recording Periods Configurable
Up to 8 recording periods can be configured for each day, with different recording type selectable for
each recording period.