49
Glossary
Menu:
Is where you control the various actions and options that are
available on your NVR.
Motion Detection:
Is the main method used by your NVR to detect mo-
tion and is an essential part of your security system. It does this by com-
paring one frame of video with the next. A certain amount of difference
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 allows
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 NVR’s clock
automatically with a network time server.
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.
Pack Duration:
Instructs your NVR to split recordings into discrete units.
Each unit can be a maximum of 60 minutes in length. Your 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 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 inter-
net connection. This setting also exists on your NVR, but is only for ad-
vanced 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 NVR to record for a number of seconds before
an event occurs.
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 colour is displayed in the image. The
higher the saturation, the more bright and vivid colours 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.
S.M.A.R.T.:
Self-Monitoring, Analysis and Reporting Technology. This is
automatic system on modern HDDs and SSDs to detect potential drive
errors before they occur.
SMTP:
This stands for Simple Mail Transfer Protocol. This is used to
send an outbound email (e.g. from your NVR to an email address).
SMTP Port:
Is the port number used by a SMTP server to listen for email
send requests. This is specified by your email provider.
