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Frequently Asked Questions
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 NetCorder
DIY
NetServer
Series (NetServer 1000 / 1500 / 2000 / 3000)
Unet
Client Workstation - UCW 500 / 1000 / 2000
NetCorder DIY
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| Q. |
I have set up a firewall
and I cannot access the live video of NetCorder via NetViewer.
What is the TCP port number for NetCorder? |
| A. |
The TCP port number for
NetCorder is 1999. After setting this TCP port number
for NetCorder, you will be able to access the live video
from NetViewer via the firewall. |
| Q. |
Is there a Windows 2000
driver for NetCorder DIY? |
| A. |
Click here
to download the Windows 2000 driver for NetCorder DIY. |
| Q. |
What do you recommend as
minimum system requirement for NetCorder DIY? |
| A. |
Recommended
minimum system requirement for NetCorder DIY is;
| CPU |
Pentium II/III, Celeron
or AMD |
| PCI Slot |
One PCI slot |
| Memory |
64MB SDRAM or above |
| Display |
SVGA Display with
1024 x 768, 16M Colour |
| Network |
10/1000 Base T or
56K Modem |
| Hard Disk |
15GB (min recommend) |
| Operating System |
Window 98SE/ME/NT/2000
with IE5 or above |
| Compression for Digital
Video Recording |
MPEG-4 / Wavelet |
| Motherboard |
Intel Chipset (highly
recommended) |
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| Q. |
What are the recording
capabilities of the card in frames per second and how
is this spread across the four inputs? |
| |
For NetCorder DIY, the
maximum recording frames per second is 25 f/s. However,
if you record all the four cameras simultaneously, the
recording frame rate will become 8.8 f/s (i.e. 2.2 f/s
for each of the 4 cameras). Since we are using software
compression, therefore, some of the frames have been taken
for video synchronization. |
| Q. |
How do we access the motion
detection functionality? |
| A. |
To access the motion detection
function, just simply right mouse-click a particular camera
video window. Then, a motion detection dialogue box will
be popped up on the right hand side. |
| Q. |
Is it possible to use more
than one card per workstation (for eight, twelve or sixteen
camera inputs)? |
| A. |
Inserting more than one
card is not supported since it is a low-end product. To
support more than four cameras, you need NetServer-1500,
NetServer-2000 or NetServer-3000. |
| Q. |
How do we configure an
http or an ftp server for use with the NetViewer software? |
| A. |
We have included a sample
web page using Active-X plug-in with the NetCorder DIY
package. Just simply copy to your machine and change the
corresponding IP address. |
| Q. |
The Minimum requirement
for installing NetCorder DIY |
| A. |
1.
CPU: Pentium II / III, Celeron or AMD
2. One PCI slot
3. 128M RAM
4. VGA Display with
1024 x 768
5. Network: 10/100
T based, 56K modem
6. Hard Disk: 15Mb
or above
7. Operating Systems:
Windows 98 or ME or NT or 2000 or IE 5.0 |
| Q. |
Please confirm that NetCroder
DIY uses MPEG4 for hardware encoding. |
| A. |
NetCorder DIY uses MPEG-4
software compression, and it requires CPU resources for
encoding, the card itself performs as an analog to digital
converter. |
| Q. |
Can we record at a certain
frame rate and resolution and transmit using a different
frame rate and resolution? |
| A. |
For remote transmission
and recording of one camera, NetCorder can perform the
recording frame rate of 25 frames per second at resolution
of 384 x 288 on both local and remote site via LAN. |
| Q. |
Please provide bandwidth
information for the following. |
| A. |
For transmission at resolution
of 384 x 288 with 25fps, the bandwidth requires is approximately
500Kbits/sec. For transmission at 192 x 244 with 25fps,
the bandwidth requires is approximately 350Kbits/sec. |
| Q. |
Can NetCorder works with
UCW - remote module? |
| A. |
No, NetCorder DIY cannot
work with UCW, only NetServer can. |
| Q. |
I have NetCorder PCB and
would like to install it on a Windows XP machine, can
I get NetCorder updates for Windows XP on the Net? |
| A. |
Actually, NetCorder does
not need a driver for the capture card under any Windows
platform. Once you have installed the application, it
will install the actual software by itself. The Windows
may ask you for the driver, but you can skip or ignore
it. It may leave a "?" in the device manager
of your Windows XP but NetCorder will definitely work
fine without any problem. |
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NetServer Series (NetServer 1000 / 1500 / 2000 / 3000)
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| Q. |
Does the NetServer come
with a built-in modem? |
| A. |
Modem is not included |
| Q. |
Standard NetServer configuration
is with SVGA display or PAL/NTSC monitor? |
| A. |
Our Standard products is
configured with SVGA output |
| Q. |
What optional or extra
items are required for the NetServer to be able to send
images to the remote site? |
| A. |
Our standard model comes
with LAN port; you can use LAN network to access the video
signals |
| Q. |
What is the maximum transmission
frame rate NetServer can supports? |
| A. |
It will depend on the number of cameras in use and
the NetServer model plus the CPU is also a factor. Total
frame rate ranges from 25 fps up to 100 fps.
|
| Q. |
Can NetServer series support
other communication protocols such as TCP/IP, HTTP, FRAME
RELAY, ATM or other leased lines from 128Kbs and upwards
) for faster remote transmission ? |
| A. |
Yes, under LAN, WAN, Internet,
Intranet, leased line, telephone line |
| Q. |
On which recording resolution
is total recording frame rate of 50fps based? |
| A. |
For example, 2.2 fps for
each camera recording at 384x288 resolution (8 channel
recording at the same time on NetServer 1500). Frame rate
will depends on your NetServer model, number of cameras
and CPU. |
| Q. |
What type of codec is used
in the NetServer for the compression of images ? |
| A. |
The compression codec is
MPEG4 |
| Q. |
Which type of camera do
you recommend for NetServer systems (technical specification)?
We have problems with camera connected to the NetServer
and the picture of some cameras with AI or manual iris-lens
are very bright. |
| A. |
There is no special camera
requirement for NetServer as long they are as either PAL
or NTSC cameras (not both) and are connected to the machine.
If you have found that your camera pictures are too bright,
please adjust the camera settings accordingly. If you
cannot change the camera brightness level, you may manually
enable the manual-adjust brightness by closing the jumper
and adjusting the thumb-wheel switch on the NetServer
PCI card. |
| Q. |
Can NetServer runs on Windows-NT
platform? |
| A. |
We recommend NetServer
to be run on Windows 2000 platform. |
| Q. |
Virtual memory is found
low after a several days of operation? |
| A. |
When you run NetServer
program, it will automatically occupy all the CPU resources.
However, when you start to run other application programs,
it will release the CPU resource to other application
software. Since we are using software MPEG-4 compression
and transmission, we do not recommend other application
software to run on the NetServer simultaneously. |
| Q. |
Occasionally,
hard disk space is found low, even though cycle recording
is set. |
| A. |
When the harddisk
is fully occupied, the oldest files will automatically
be overwritten by small portion. From then, it is normal
that the harddisk space will always be low at a certain
level (enough for OS normal operation ). It will not overwrite
the harddisk by large portion since we want to keep the
recorded videos for as long as possible. |
| Q. |
Please explain the different
frame rates for different conditions. |
| A. |
| A. |
If you just connect
1 camera to a NetServer card for recording, you
will get 25 f/s (P3 or P4 CPU). |
| B. |
If you connect 2
cameras to the same NetServer card for recording,
you will only get 4 f/s (P3 or P4 CPU) for each
of the 2 cameras. |
| C. |
If you connect 3
or 4 cameras to the same NetServer card for recording,
you will only get 2.5 f/s and 2.2f/s respectively
for each of the 3 and 4 cameras. |
| D. |
If you connect only
1 camera for each of 4 NetServer cards (NetServer
2000 / 3000 only) for recording, you will get very
close to 25f/s for each of the 4 cards (with P4
1.5GHz & 128M RAMBUS). |
| E. |
If you
connect all the 16 cameras with 4 NetServer cards
(NetServer 2000/ 3000) for recording, you will get
2.2 f/s for each of the 16 channels (P4 CPU). Note:The
result on the frame rate is the same as using one
card with 4 camera inputs. |
| Note: |
The frame rate may
be affected if there is any remote viewing from
the UCW while the recording is taking place on NetServer
OR local display on NetServer. |
|
| Q. |
How long can it record
(16 cams) and what is the size of the disks (are they
IDE or SCSI and can external RAID storage be used)? |
| A. |
If you record 16
channels continuously (at 2.2f/s), it takes approximately
7.6GB hard disk space per day. When you are using 80GB
hard disk it can store up to 10 days of information. You
can use IDE, SCSI or RAID hard disk.. |
| Q. |
Can the disks be recorded
as "ring memory" (partitioned i.e. in hour segments,
and when the last segment is full, the first is overwritten
again) |
| A. |
You can use circular mode
for recording. It means when the hard disk is full, the
new video will overwrite the oldest video files. Alternatively,
you can set within a certain period for circular mode. |
| Q. |
My customers wish (if possible)
to do playback while still recording. (i.e.: on camera
7 something happened, so he wants to replay this camera
while still recording all cams 1-16. I guess this is possible. |
| A. |
Yes, it is possible. You
can playback while recording or monitoring. |
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Unet Client Workstation - UCW 500 / 1000 / 2000
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| Q. |
We have setup UCW 2000
properly at our client site however the pictures we see
from the machine is not clear and cannot see any images
from the pictures, and only lines on a black background. |
| A. |
For UCW-2000 to run properly,
you must set your desktop resolution to 1024 x 768 with
16 bits colours only. Also, we recommend that you use
Matrox G450 (SVGA card) which can provide dual display
feature. |
| Q. |
Sometimes, UCW cannot connect
to the NetServer but after reboot it seems to do so. |
| A. |
Please make sure that no
two UCW users with the same user name and password are
logged onto the NetServer at the same time. Also, please
make sure that you have typed the user name and password
correctly (case-sensitive) for UCW. |
| Q. |
Can the UCW do reconnection
to NetServer, if the connection between is disconnected
for a period? |
| A. |
The current version
of UCW-2000, UCW user needs to re-connect the NetServer
by himself if the system is disconnected. However, when
you restart the UCW by typing the corresponding user
name and password correctly, the UCW will display the
previous camera images automatically.
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