User Manual

DW Spectrum 3.0
Rev. 072017 Page | 186
Glossary
DW Spectrum Server Components – DW Spectrum Server and Server.
Administrator – a user that configures DW Spectrum.
Archive – video and audio data recorded from cameras.
Aspect Ratio (AR) – video dimensions. Most commonly used are: 4:3 and 16:9.
Bitrate – number of bytes per second. Used to measure video stream.
Client – the software used to connect to servers and view video streams.
Codec – video or audio compression.
Dual Streaming – enables a camera to provide two separate streams simultaneously, yielding bandwidth and
processor savings on Client (see RADASS).
Export – allows to export a video footage from archive. Exported video can be viewed on any device.
FPS – Frames per Second. Used to measure video stream.
GPU – Graphic Processing Unit. The processor installed on the video card.
HTTP – Hyper Text Transfer Protocol. Some cameras use this protocol to stream video.
Item – video or image on Scene.
Layout – saved video items and their position, size and orientation.Used to present surveillance information to DW
Spectrum user.
Live – ability to view cameras live in real-time mode.
Server Port – used by Server to process requests for recorded fragments and video data from DW Spectrum Client.
Motion Detection – indicates whether or not any motion occurred within camera's viewing zone.
Motion Mask – the area in viewing zone that does not trigger Motion Detection.
Multi-Video Export – an ability to backup several videos in a proprietary format or executable bundle.
Onvif – a unified protocol used for communication with cameras. See http://www.onvif.org/.
OS – Operating System.
Preview Search – breaks down a period of time into smaller video segments. Example: a month broken into ten 3-day
periods displaying them as separate video segments. Eases search of large archives.
Private (cameras) Network – the network used to transmit data from cameras to Server . It is not accessible from
outside.
Public (Intranet) Network – the network used to connect to Server from outside. It can be used for either connecting
Server to Server or configuring Server Components. It may or may not be connected to the Internet.