Bosch DHR-1600A-150A CCTV Glossary - Page 11

Camera, DVR, and VIP products Glossary of CCTV Terms | en 11 Sector blanking Sensitivity SensUp SFP SI Singlemode Fiber SNIA SNMP SNTP Spot Focus Subnet mask S The ability to blank out video in any number of the pan sectors. A measure of the amount of light required to provide a standard video signal. Sensitivity values are stated in lux (see Lux) or foot-candles. Ups (increases) camera sensitivity by increasing the integration time on the CCD. This is accomplished by integrating the signal from a number of consecutive video frames to reduce signal noise. Small Form-factor Pluggable: A small, standardized module for network connections; designed as a plug connector for high-speed network connections. International System of Units (abbreviated SI from the French Le Système international d'unités): The world's most widely used system of units, both in everyday commerce and in science. An optical fiber with a silica (or glass) core with a diameter of less than 10 microns. Used for high-speed transmission over long distances, it provides greater bandwidth than multimode (see Multimode Fiber), but its smaller core makes it more difficult to couple the light source. Singlemode fiber optic transmission systems use more expensive laser-based light sources. Storage Networking Industry Association: Association of companies for defining the iSCSI standard. Simple Network Management Protocol: IP based protocol for network management, as well as managing and monitoring network components. SNMP allows getting information from networking devices (GET), to set parameters on network devices (SET), and to be notified about certain events (EVENT). Simple Network Time Protocol: A simplified version of NTP (see NTP). Activates Auto Focus for three seconds after camera movement. Subnetting is a method that allows one large network to be broken down into several smaller ones. IP addresses are grouped by something called a subnet mask. Every IP address has a corresponding subnet mask. The subnet mask specifies the range of the IP addresses in a group. The subnet mask looks a lot like an IP address. It is made up of four eight-bit numbers separated by periods. These numbers once again range from 0 to 255. A typical subnet mask is 255.255.255.0. TCP/IP Telnet Tilt TLS T Transmission Control Protocol/Internet Protocol: a communications protocol suite that provides two data transport methods. TCP is a connection-based protocol that ensures that data arrives intact and complete. UDP is a connectionless, best effort protocol that simply sends out packets. UDP is typically used for streaming media, while TCP is used when errorfree delivery is required. Log in protocol with which users can access a remote computer (Host) on the Internet or local area network (LAN) connections. Camera movement in the vertical direction. Transport Layer Security: TLS 1.0, 1.1, and the standard advanced developments of SSL 3.0 (Secure Sockets Layer, the predecessor to TLS). Bosch Security Systems Glossary of CCTV Terms AR18-08-B000 | | Version 1.0 | 2008.08