Panasonic Digital Disk Recorder Wj Hd616 Wj Hd716 Operating Instructions

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Default gateway
Network device used as a gateway for networks, such 
as a local network, to access PCs on an external net-
work. Data is sent using the default gateway if a gate-
way is not specified in the destination IP address.
Cable compensation
Generally, video signals will be attenuated when using a 
long cable to connect between the recorder and the 
camera. The cable compensation function compensates 
this attenuation. In this product, the cable compensation 
function compensates video signals from the cameras 
connected to the video input connectors 1 - 8 when 
using the WJ-HD616K (the video input connectors 1 - 16 
when using the WJ-HD716K). 
Combination camera (PTZ camera)
Indicates a camera with the panning/tilting and zooming 
function. Also known as PTZ camera.
Subnet
A small network used as a unit of administration when a 
larger network is divided into smaller networks. Large 
networks in corporations, for example, the network can 
be broken down into smaller networks called "subnets" 
to make the network more manageable and lines used 
more efficiently. In this case, these smaller networks are 
called subnets.
Subnet mask/Subnet prefix length
Subnet mask consists of 32-bit numeric values. 
According to the values, devices can determine which 
part of the address is the network address and which 
part is the host address.
Sequence
The function that can sequentially display images from 
cameras in order set in advance. In this product, the 
sequence can be performed during displaying live imag-
es. 
Schedule recording
Function that automatically starts video and audio 
recording on a preset time schedule.
Secondary (DNS) server
DNS servers usually have more than 2 systems and the 
secondary server is the sub system. 
If there is trouble with the primary server, the secondary 
server takes over.
Full duplex
Communications method that allows simultaneous 
sending and receiving by transmitting in both directions 
using an independent sending line and receiving line.
Time zone
A time zone is a region or a country that has uniform 
standard time.
Multiscreen display
This product can display images from multiple camera 
channels simultaneously while displaying live images or 
playback images. Displaying of images from 4 cameras 
or from 16 cameras simultaneously is called as 
"4-screen display" or "16-screen display" respectively. 
Electronic zoom
The function that enlarges live images and playback 
images during playback. The electronic zoom enlarges 
the images by the recorder and is separate from the 
zoom function included as part of the camera operations 
for enlarged images.
Coaxial communication
This method is used to control the camera using the 
camera control signal through the cable connecting 
between the recorder and the camera. In this product, 
the cameras connected to the video input connectors 1 
- 8 (1 - 16 for WJ-HD716K) can be connected using the 
coaxial communication. 
Disk configuration (Disk config.)
It is necessary to configure the HDD settings after 
replacing, removing, or adding a HDD. "Disk config." is 
the menu for configuring the HDD. 
Half duplex
Communications method that switches between send-
ing and receiving using a single communications line.
Bit rate
Indicates how many bits of data can be processed or 
transmitted in a unit of time. Generally, the units are in 
bps, or bits per second. Used to indicate the compres-
sion rate of video and audio data, and how much data a 
communications line can send and receive in 1 second. 
Firewall
A type of security used when accessing outside net-
works like the Internet. A PC is used to prevent comput-
ers outside a local network from accessing the network.
Private (IP) address 
IP address assigned when connecting primarily to LAN. 
Private IP addresses can be assigned freely on a net-
work and do not require a formal application. However, 
because private IP addresses cannot be used to access 
the Internet, a router or other device it is necessary to 
assign a global IP address.
Primary (DNS) server
DNS servers usually have more than 2 systems and the 
primary server is the main system. 
Plug-in software
Small programs used to add functions to application 
software.
Broadband router
Router used to access the Internet via high-speed ADSL 
or fiber optic lines. 
						

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Protocol
A set of rules that allows the exchange of data amongst 
different types PCs with information. 
The Internet uses the TCP/IP protocol as its base and 
information is transferred following http and ftp proto-
cols depending on the application.
Port number
A sub address set below the IP address to connect mul-
tiple parties simultaneously for communication (TCP, 
UDP, etc.) on the Internet.
Hold playback speed
It is possible to change the playback speed during play-
back by rotating the shuttle ring. The hold playback 
speed function can keep the playback speed even after 
releasing the shuttle ring. 
Manual recording
Click the [Recording] button and the [Recording stop] 
button to manually start and stop recording of video and 
audio.
Router
Placed in between different networks, a router sends 
data to the proper destination via network. If data on the 
network is addressed to an external network, routers 
send the data to the outside of the network after judging 
the optimum sending route.
Recording rate (ips)
Unit that determines the smoothness when recorded 
images are played back. "ips" indicates the number of 
recorded frames in 1 second. When the recording rate is 
higher, the playback is smoother, but available recording 
time is reduced. 
						

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