Operating Environment; Network - JVC VN-H557U Instructions Manual

Operating Environment

Recommended Computer
Specifications
OS : Windows 8 Pro, Windows 7
Professional (SP1), Windows XP
Professional, or Home Edition
(SP3)
CPU : Intel Core i5 3 GHz or higher
Memory : 2 GB and above
capacity
Free hard : 512 MB or more
disk space
Display and : 1920 ´ 1080 pixels or higher, True
video card
Color (24 or 32 bits) VRAM 1 GB
or more recommended
Web browser : Internet Explorer Version 8.0,
Version 9.0, Version 10.0
Note :
Operation is not guaranteed for web browser
0
other than the Internet Explorer versions stated
in the recommended PC specifications.
The touch operation of Windows 8 is not
0
supported.
The Built-in Viewer consists of a software
0
component called ActiveX. The ActiveX is
usually installed when the Built-in Viewer is used
for the first time. However, installation may be
rejected depending on the anti-virus software
settings. If this occurs, change the settings of the
anti-virus software.
The camera image may not appear smooth at
0
times due to factors such as fluctuations in the
CPU and memory load, or network jitter. This is
not a malfunction.
The symptoms may improve when the camera
settings are changed.
For more details, refer to the "[Encoding] Page"
in "INSTRUCTIONS" of the supplied CD-ROM.
Noise may be heard in the playback sound for
0
some built-in sound cards on PCs.
LAN Environment
10BASE-T/100BASE-TX network
0
interconnected using devices such as an
IEEE802.3-compliant switching hub.
IEEE802.3af-compliant switching hub when
0
PoE is used.
IGMPv2-compliant network when multicast is in
0
use.
Operating Environment
14

Network

Ensure that there is sufficient network
0
bandwidth for the data volume to be sent out by
the camera. Do not send multicast stream that
exceeds the bandwidth. If the entire bandwidth
is used by the multicast stream, control of this
camera via the network may fail.
Data volume to be sent by the camera varies
0
with the settings and number of distributions.
The maximum bit rate for transmission is about
0
40 Mbps.
Supports up to 20 clients at the same time.
0
Frame Rate and Frame Size
This products enables simultaneous encoding up
to three channels. However, the settable frame size
and frame rate combinations are subject to
restrictions.
For more details about restrictions on the
combination, refer to the "Appendix (Restrictions
during Multi-encoding)" in the "INSTRUCTIONS"
on the supplied CD-ROM.
Bit Rate of JPEG Stream
The JPEG file size per frame varies with the
encoding settings as well as the camera images.
When "AFS" is selected, encoding is performed
such that the target file size is the average size of
multiple JPEG images. When "VFS" is selected,
the quantization table during JPEG encoding will
be maintained, and the file size will increase/
decrease according to the camera images.
If the JPEG file size per frame is 120 KB, then the
total bit rate will be:
120 KB ´ 15 fps = 1800 KB/s = Approx. 14.4 Mbps
When multiple encoders are selected, a different
JPEG file size can be set for each channel.
For example, when 2fps JPEG files with 30 KB file
size and 3fps JPEG file with 10 KB file size are
transmitted, then the total bit rate will be:
30 KB ´ 2 fps +10 KB ´ 3 fps = 90 KB/s = Approx.
0.72 Mbps