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Digital Video Recorder User Guide
118
Digital Video Recorder User Guide
119
Term Denition
FAT 32 Format
File allocation table (32 bit generation). Replaces and overcomes limitations of
previous versions. The SVR-1680/1660 supports the FAT 32 operating system.
FCC
Federal Communications Commission. The governing body in the United States that
creates and enforces compliance regulations regarding electronic equipment that
radiates radio frequency energy.
Firmware
The programming written to the ROM portion of a small memory chip and that runs
programs on the SVR-1680/1660. (Programs stored on firmware are usually small
and do not require the storage capacity found in large computer hard disk drives.)
Focus
The focal point of a lens. An adjustment to the lens optics improves the clarity of
the picture.
FPS
Frames per second. The number of frames that are displayed or recorded each
second.
Gain The increase in strength of a video signal. See also, automatic gain control (AGC).
GUI Graphical User Interface.
HDD An internal hard disk drive.
Interlace/
deinterlace
Combining even and odd fields to improve the picture quality of a video signal.
Deinterlacing is the process of converting interlaced video to a non-interlaced form.
IPS Images per second. Same as FPS.
Jog/Shuttle
The circular control on the front panel of the SVR-1680/1660 that is used to adjust
menu settings, navigate through on-screen menus and control PTZ cameras. The
jog/shuttle can be pressed in any of four directions up, down, right, and left.
LED
A series of light-emitting diodes located on the front panel of the SVR-1680/1660
that indicate channel and data input status.
Loop out
Abbreviation for a loop output connection terminal on a DVR, for each camera
channel.
Manual recording The act of recording video by selecting the record function while viewing live video.
Max R/F
The maximum frames per second that can be recorded at the selected video
resolution.
Motion detection
The act of recording video based on the presence of motion in a defined area in the
camera field of view.
H.264
A data compression standard digital video codec with a very high data compression
rate that is also known as MPEG-4 Part 10 or AVC (Advanced Video Coding).
N.O./N.C.
Normally Open/Normally Closed. The normal setting for a sensor when it is
connected to a DVR.
An alarm is triggered when the sensor is switched from its normal setting. For
example, if a sensor for a door is set to Normally Closed, opening the door triggers
an alarm.
Term Denition
NTSC
National Television Standards Committee. The analog television standard used in
most of the Americas, Japan, South Korea, Burma, Taiwan, and the Philippines.
PAL
Phase Alternating Line. Describes the color phase change in a PAL color signal.
PAL is the European color encoding TV system featuring 625 lines per frame, 50
fields per second and a 4.43361875 MHz sub-carrier (4.43 MHz). Used mainly
in Europe, China, Malaysia, Australia, New Zealand, the Middle East and parts of
Africa.
Pan
To reposition a camera to the right or left, usually done with a computer mouse or
keyboard joystick control.
Picture-in-Picture
The act of displaying one channel on the screen while a second channel is
displayed in an inset window.
POS
Point Of Sale. An external device for which the SVR-1680/1660 can retrieve text
data related to recorded events.
A POS transaction registers sales amounts and other information related to a
purchase. When combined with a surveillance camera recording video as each
transaction occurs, the data can be reviewed when the recorded video is played
back.
PPPoE Point-to-Point Protocol over Ethernet.
Preset location
The pre-positioning of pan, tilt and zoom cameras by the use of potentiometers in
the moving parts of the camera head, which allow the control equipment to store
and move to a set reference point when the controller dictates or when an alarm
exists.
Protocol
The standard that provides the ability to control camera actions from a keyboard
joystick, remote control, or user interface. The SVR-1680/1660 supports several
standard and proprietary protocols such as Samsung Techwin, Pelco D, Pelco P,
Panasonic, Bosch, and SEC
PTZ (Pan/Tilt/
Zoom)
An acronym for a camera that provides pan, tilt, and zoom capabilities.
Relay
Any device attached to a DVR that can be invoked in response to an alarm or other
event. For example, a relay can lock or unlock a door in response to an alarm.
Resolution
A measure of the ability of a camera or television system to reproduce detail.
Typically refers to the number of picture elements that can be reproduced with
good definition.
Scheduled
recording
The act of recording video based on a programmed schedule. When a DVR is set to
record video based on a schedule, only video for those days and hours is recorded.
Separate recording schedules can be created for each camera connected to the
SVR-1680/1660.
Seek header
The starting point for a block of data that is used by the text search function to
locate the beginning of a recording or its associated data.
Appendix E. Glossary