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Glossary
Menu:
Is where you control the various actions and options that are
available on your DVR or NVR.
Motion Detection:
Is the main method used by your DVR or NVR to de-
tect motion and is an essential part of your security system. It does this
by comparing one frame of video with the next. A certain amount of dif-
ference between these two frames is interpreted as motion.
NAS (Network Attached Storage):
A network device with one or more
HDDs that other network devices can use as if the storage was connect-
ed directly.
NIC (Network Interface Controller):
The hardware component that al-
lows a device to connect to a network. Both wired and wireless NICs
exist for these respective purposes.
NTP (Network Time Protocol):
Is used to synchronize your DVR or NVR’s
clock automatically with a network time server. Most time servers are
on the internet.
NTSC:
Is the video system used in North America, Canada and some
Latin American countries. In NTSC, 30 frames are transmitted each
second.
Optical Zoom:
Is a true zoom feature. It allows you to zoom in (or out) on
an object to get a closer view by using the camera’s lens.
OSD (On-screen Display):
Display information from the camera such as
time, date and camera name on-screen.
Overscan:
Is mainly used on older television sets to display the entire
viewable area correctly on-screen. It does this by cutting off the edges of
the picture. This is not required for modern Plasma and LCD TVs as the
image is digitally processed to display the correct aspect ratio.
Pack Duration:
Instructs your DVR or NVR to split recordings into dis-
crete units. Each unit can be a maximum of 60 minutes in length. Your
DVR or NVR will play these as one continual video.
PAL:
Is the video system used in the United Kingdom, Australia and most
European countries. In PAL, 25 frames are transmitted each second.
Post-record:
Instructs your DVR or NVR to record for a set period of
time after an event has occurred.
PPPoE (Point-to-Point Protocol over Ethernet):
Is the most common
method that your router uses to login to your ISP to enable your internet
connection. This setting also exists on the DVR or NVR, but is only for
advanced users as the configuration required is difficult to complete and
requires a modem-only device (or a modem/router set to modem-only).
Pre-record:
Allows your DVR or NVR to record for a number of seconds
before an event occurs.
Privacy Zone:
See Mask for information.
Resolution:
The measure of detail that can be seen in an image. The
higher the number, the greater the detail available.
RTSP (Real Time Streaming Protocol):
A network protocol designed to
transmit video and audio information over networks and the internet in
real time.
Saturation:
This alters how much color is displayed in the image. The
higher the saturation, the more bright and vivid colors will appear.
Server Port:
Is a logical connection place and specifically, using the in-
ternet protocol TCP/IP, the way a client program specifies a particular
server program on a computer in a network.
SEQ:
Puts the DVR or NVR in sequence mode. This will repeatedly cycle
through each video channel for a predetermined time in Live View mode.
