|
February 2011 |
This camera model has been tested satisfactorily by the Compucon team as in February 2011. It is the latest addition to the Compucon IP camera portfolio.
Key features of this camera:
- For Indoor use only
- Horizontal view angle is 64 degree based on f4.2mm focal length
- Colour for 7Lux or above, Black & White above 1Lux
- Cube or Square shape (see photo)
- 1.3Megapixel for max of 1280 x 1024 dot resolution
- Max of 18 frames per second on max resolution using H.264 compression
- Capable of dual streaming (MJPEG, MPEG-4, H.264) for 2 different destinations
- Power over Ethernet (POE) capable
Special features of this camera:
- Has Passive Infrared sensor for detecting of human presence or intrusion (up to 4 metres away).
- Has Digital Input for connecting to an external device such as window or door lock
- Has Digital Output for connecting to an external device such as siren or light bulb
Lack of features of this camera:
- Does not have Infrared cutoff filter or LED for low illumination conditions
- Does not have Wide Dynamic Range capability for reducing the contrast gradient of the scope of view
A comparison of features with a previous version is shown here:
| Stock Code |
CA-4200 |
CAT-4201 |
| Compression |
MJPEG, MPEG-4 |
MJPEG, MPEG-4, H.264 |
| Resolutions & Frame Rates |
SXGA@8FPS, HD720@10FPS, VGA@30FPS, QVGA@30FPS, QQVGA@30FPS |
SXGA@18FPS, HD720@26FPS, VGA@30FPS, QVGA@30FPS, QQVGA@30FPS |
| Dual Streaming |
No |
Yes |
| Bit Rate (Per Stream) |
28K – 3Mbps |
28K – 6Mbps |
| Motion Detection |
Yes |
Yes |
| Passive Infra-Red Sensor |
No |
Yes |
| Digital Input/Output |
No |
Yes |
| Security |
Password protection |
IP address filtering, HTTPS encryption, password protection |
| Power |
DC 3.3V |
DC 12Vor POE Class 3 |
Detailed Spec is given below.
| |
|
Device Type
|
Cube Camera
|
|
Image Sensor
|
Aptina
Progressive Scan CMOS
|
|
Sensor Size
|
1/3” (4.8 x
3.6 mm)
|
|
Day / Night
|
No
|
|
Minimum Illumination
|
Color: 0.5
lux at F1.0 (2400 °K, 30 IRE); B/W: 0.5 lux at F1.0 (2400 °K, 30 IRE)
|
|
Color to B/W switch
|
DSP based switch,
configurable
|
|
Mechanical IR Cut Filter
|
No
|
|
IR Sensitivity Range
|
No
|
|
Electronic Shutter
|
1/30 -
1/1,000 sec (60Hz); 1/25 - 1/1,000 sec (50Hz) (manual mode)
1/5 -
1/15,000 sec (auto mode)
|
|
• Lens
|
|
Focal Length
|
Fixed focal,
f4.2 mm / F1.8
|
|
Iris
|
Fixed iris
|
|
Focus
|
Manual focus
|
|
Mount Type
|
CS mount
(interchangeable lens)
|
|
Horizontal Viewing
Angle
|
64.1°
|
|
• Video
|
|
Compression
|
H.264,
MPEG-4 SP, MJPEG
|
|
Maximum Frame Rate
vs. Resolution
|
18 fps at
1280 x 1024 (SXGA); 26 fps at 1280 x 720 (HD 720p); 30 fps at 640 x 480
(VGA);
30 fps at
320 x 240 (QVGA); 30 fps at 160 x 112 (QQVGA)
|
|
Multi-Streaming
|
Simultaneous
dual streams based on two configurations
|
|
Bit Rate
|
28 Kbps - 6
Mbps (per stream)
|
|
Bit Rate Mode
|
Constant,
Variable
|
|
S/N Ratio
|
More than 44
dB
|
|
Image Enhancement
|
White
balance: automatic, predefined and manual; Brightness; Saturation; Contrast;
Sharpness;
Automatic
gain control; Auto exposure: automatic, predefined and manual; Flickerless
|
|
Privacy Mask
|
4
configurable regions
|
|
Text Overlay
|
User defined
text on video
|
|
Image Orientation
|
Image flip
and mirror
|
|
• Audio
|
|
Compression
|
8 kHz, Mono,
PCM, 16 bit encoding
|
|
Audio-In
|
Built-in
Microphone
Sensitivity:
-36±3dB(0dB=1V/Pa); S/N Ratio: more than 58dB; Omni-directional
|
|
Audio-Out
|
3.5mm Phone
Jack
|
|
• Network
|
|
Protocol & Service
|
TCP, UDP,
HTTP, HTTPS, DHCP, PPPoE, RTP, RTSP, IPv6, DNS, DDNS, NTP, ICMP, ARP, IGMP,
SMTP, FTP, UPnP, SNMP, Bonjour
|
|
Ethernet Port
|
1, Ethernet
(10/100 Base-T), RJ-45 connector
|
|
Security
|
IP address
filtering; HTTPS encryption; Password protected user levels
|
|
• Alarm
|
|
Alarm Trigger
|
Video motion
detection (3 regions); External device through digital input
|
|
Alarm Response
|
Notify
control center; Go to PTZ preset point or preset tour; Change camera
settings;
Command
other devices; E-mail notification with snapshots; Upload video, snapshot to
FTP server;
Activate
external device through digital output
|
|
• Interface
|
|
Digital Input
|
1, TTL,
terminal block
|
|
Digital Output
|
1, TTL,
terminal block
|
|
Passive IR Sensor
|
Yes
|
|
• General
|
|
Power Source / Consumption
|
DC 12V /
3.84 W
PoE Class 3
(IEEE802.3af) / 4.32 W
|
|
Weight
|
160 g (0.35
lb)
|
|
Dimensions (W x H x D)
|
88 mm x 85
mm x 39 mm (3.47” x 3.35” x 1.54”)
|
|
Bundled Accessories
|
Bracket
|
|
Operating Temperature
|
-10 °C ~ 50
°C (14 °F ~ 122 °F)
|
|
Approvals
|
CE, FCC
|
|
|
|
February 2011 |
Source article:
http://www.openxtra.co.uk/articles/calculating-heat-load
---
Calculating The Size of a Server Room Air Conditioner
Submitted by dlaverty on Sun, 2005/02/20 - 16:44
A quick guide to show you how to work out your requirements for an air conditioning unit for your Server Room or Data Center.
In principle it’s easy to calculate the size of air conditioning unit you need for your Server Room, just add together all the sources of heat and install an air conditioning unit that can remove that much. In practice it’s rather more complicated.
Fire regulations often require that Server Rooms have levels of insulation far above that of a normal office. Providing sufficient cooling is essential to ensure reliable running of servers, routers, switches and other key equipment. Failure of the air conditioning can have serious consequences for the equipment itself and for your company. Early warning of problems and spare capacity in the cooling system are both highly desirable.
Calculating Heat Load
The amount of heat generated is known as the heat gain or heat load. Heat is measured in either British Thermal Units (BTU) or Kilowatts (KW). 1KW is equivalent to 3412BTUs.
The heat load depends on a number of factors, by taking into account those that apply in your circumstances and adding them together a reasonably accurate measure of the total heat can be calculated*.
Factors include:
* The floor area of the room
* The size and position of windows, and whether they have blinds or shades
* The number of room occupants (if any)
* The heat generated by equipment
* The heat generated by lighting
Floor Area of Room
The amount of cooling required depends on the area of the room. To calculate the area in square metres:
Room Area BTU = Length (m) x Width (m) x 337
Window Size and Position
If, as is quite common, your Server Room has no windows, you can ignore this part of the calculation. If, however there are windows you need to take the size and orientation into account.
South Window BTU = South Facing window Length (m) x Width (m) x 870
North Window BTU = North Facing windows Length (m) x Width (m) x 165
If there are no blinds on the windows multiply the result(s) by 1.5.
Obviously if you are in the Southern Hemisphere you would swap the conversion factors as the heat on North facing windows is then greatest.
Add together all the BTUs for the windows.
Windows BTU = South Window(s) BTU + North Window(s) BTU
Occupants
Purpose built Server Rooms don’t normally have people working in them, but if people do regularly work in your Server Room you will have to take that into account. The heat output is around 400 BTU per person.
Total Occupant BTU = Number of occupants x 400
Equipment
Clearly most heat in a Server Room is generated by the equipment. This is trickier to calculate that you might think. The wattage on equipment is the maximum power consumption rating, the actual power consumed may be less. However it is probably safer to overestimate the wattage than underestimate it.
Add together all the wattages for Servers, Switches, Routers and multiply by 3.5.
Equipment BTU = Total wattage for all equipment x 3.5
Lighting
Take the total wattage of the lighting and multiply by 4.25.
Lighting BTU = Total wattage for all lighting x 4.25
Total Cooling Required
Add all the BTUs together.
Total Heat Load = Room Area BTU + Windows BTU + Total Occupant BTU + Equipment BTU + Lighting BTU
This is the amount of cooling required so you need one or more air conditioning units to handle that amount of heat.
So what size of unit do I need?
Small air conditioning units have a cooling capacity of between 5000 and 10000 BTUs. Small units may fit in windows, venting to the outside world.
Larger units may be rated in tons of cooling. 1 ton of cooling is equivalent to 12 thousand BTUs.
Disclaimer: This calculation is intended as a rough guide only. Complete accuracy cannot be guaranteed. Before you decide on an air conditioning unit you should commission an audit from a suitably qualified air conditioning equipment specialist or installer.
|
|
|
February 2011 |
|
Compucon Vehicle DVR
Product Specification
This Digital Video Recorder (DVR) product is designed for installation in motor vehicles such as private cars, taxis, buses, vans and trucks. When installed and operating, the product will record the state of affairs as listed in (1) and achieve the effect of (2) and the function of (3) as explained below.
- Information recorded or available include the road and traffic conditions in video, the inside car cabin situation in video, audio as recorded and the volume is adjustable, speed of the car in numeric KPH, direction of the car as shown on a compass, location of the car as shown on a map and in terms of latitude and longitude, the shock position of the car in 3 dimensions, and finally the date and time of the recording.
- Deterrent to the driver or people inside the car cabin as they know their activities will be recorded
- Evidence of activities as recorded
Major Product Features
- There are 2 cameras embedded in the product and their lenses are located on the front end and back end of the unit as shown in the picture within the circle below.
- There are 3 plastic suction hooks for attaching the DVR to the windscreen or any other surface suitable for holding the DVR. The hinge connecting the hooks to the DVR is adjustable and this allows the cameras to be positioned as desired within limits. The DVR is quite light (about 140g), and the hooks are adequate to hold the DVR in position.
- There are 4 Infrared LED on the side of the DVR facing inward the car cabin and they are on the LHS of the camera. This set of Infrared LED is for night-mode operation when visible light is too low. The DVR will start up in night mode for the first 30 seconds, and determine if it should stay on night mode or day mode for subsequent operation.
- The DVR will record data onto a flash card (Micro SDHC Class 6 to be exact). Micro refers to its very small size, see picture. SD stands for Secure Digital which is a name given by the initial technology developer. HC stands for High Capacity. Class 6 means the card is capable of writing at 6MB per second.
- Compucon supplies one 8GB of flash card with the product. However, customers can use bigger capacity such as 16GB and 32GB which will support recording for a longer period (proportionally). We estimate that 8GB supports 8 hours of recording.
- The flash card should be inserted in the DVR unit as shown in the picture on the RHS before the DVR receives power. It is OK to change the flash card at any time as long as the DVR is not on power. Remove the flash card with recording and insert it in a Reader which has an USB connector. See picture on the LHS. Connect it to a PC and the PC will be able to display the recording on the screen. The Reader is supplied by Compucon as part of the product.
- The flash card contains the software needed to play the recording. The software will work under Windows XP, Vista or Windows 7. A separate CD with the software is supplied as part of the package for back up purpose.
- The DVR is powered by the cigarette lighter in the car at 5V. Such an adapter with cable for connecting the DVR to the cigarette lighter is included in the product package.
Operation of DVR
- The DVR will automatically operate once it has received power. Therefore always connect power only when you are sure the DVR should start operating. Disconnect power before attempting to remove the flash card out of the DVR or putting the DVR away.
Playback of Recording
- It is OK to copy the newly recorded file into a PC and save the file in the PC as the archive along with other files. As soon as the software is initiated, a full screen will be displayed and the 6 icons below at the bottom RHS corner are needed for display control.
- Click the file open icon to select the desired file to play back. When the file has been selected and opened, it may show initially show some information not relevant to the file. Click play (forward arrow) to play the file. Click the Internet Explorer icon to start Google Map. The video will play with correct information. Click the scissors if you want to make a snapshot at any time.
- Sample of Playback Screen:
Cautions of Use
- The DVR must be powered within 5V±5% DC. Use the supplied cigarette lighter adapter. Some models of vehicles may have the cigarette lighter power supply cut off when the engine is OFF. The DVR will not work under those situations.
- A new SD card must be formatted by the supplied software player first to be used properly. A click of the yellow hammer and screwdriver button will initiate formatting
- GPS positioning and car speed recorded will be affected by various factors such as the weather and whatever metallic content the car windscreen may have etc
- Infrared recording starts automatically according to the lighting condition in the car
- The software is ready to use. However, you may change the way the software is set up by clicking the lock icon (4th from the LHS). The set up menu is quite intuitive. If needed, email
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it
for help stating Vehicle DVR technical support as the email subject matter.
Detailed Product Specification
END
Version 20110202
|
|
|
February 2011 |
|
Compucon Vehicle DVR
Product Specification
This Digital Video Recorder (DVR) product is designed for installation in motor vehicles such as private cars, taxis, buses, vans and trucks. When installed and operating, the product will record the state of affairs as listed in (1) and achieve the effect of (2) and the function of (3) as explained below.
- Information recorded or available include the road and traffic conditions in video, the inside car cabin situation in video, audio as recorded and the volume is adjustable, speed of the car in numeric KPH, direction of the car as shown on a compass, location of the car as shown on a map and in terms of latitude and longitude, the shock position of the car in 3 dimensions, and finally the date and time of the recording.
- Deterrent to the driver or people inside the car cabin as they know their activities will be recorded
- Evidence of activities as recorded
Major Product Features
- There are 2 cameras embedded in the product and their lenses are located on the front end and back end of the unit as shown in the picture within the circle below.
- There are 3 plastic suction hooks for attaching the DVR to the windscreen or any other surface suitable for holding the DVR. The hinge connecting the hooks to the DVR is adjustable and this allows the cameras to be positioned as desired within limits. The DVR is quite light (about 140g), and the hooks are adequate to hold the DVR in position.
- There are 4 Infrared LED on the side of the DVR facing inward the car cabin and they are on the LHS of the camera. This set of Infrared LED is for night-mode operation when visible light is too low. The DVR will start up in night mode for the first 30 seconds, and determine if it should stay on night mode or day mode for subsequent operation.
- The DVR will record data onto a flash card (Micro SDHC Class 6 to be exact). Micro refers to its very small size, see picture. SD stands for Secure Digital which is a name given by the initial technology developer. HC stands for High Capacity. Class 6 means the card is capable of writing at 6MB per second.
- Compucon supplies one 8GB of flash card with the product. However, customers can use bigger capacity such as 16GB and 32GB which will support recording for a longer period (proportionally). We estimate that 8GB supports 8 hours of recording.
- The flash card should be inserted in the DVR unit as shown in the picture on the RHS before the DVR receives power. It is OK to change the flash card at any time as long as the DVR is not on power. Remove the flash card with recording and insert it in a Reader which has an USB connector. See picture on the LHS. Connect it to a PC and the PC will be able to display the recording on the screen. The Reader is supplied by Compucon as part of the product.
- The flash card contains the software needed to play the recording. The software will work under Windows XP, Vista or Windows 7. A separate CD with the software is supplied as part of the package for back up purpose.
- The DVR is powered by the cigarette lighter in the car at 5V. Such an adapter with cable for connecting the DVR to the cigarette lighter is included in the product package.
Operation of DVR
- The DVR will automatically operate once it has received power. Therefore always connect power only when you are sure the DVR should start operating. Disconnect power before attempting to remove the flash card out of the DVR or putting the DVR away.
Playback of Recording
- It is OK to copy the newly recorded file into a PC and save the file in the PC as the archive along with other files. As soon as the software is initiated, a full screen will be displayed and the 6 icons below at the bottom RHS corner are needed for display control.
- Click the file open icon to select the desired file to play back. When the file has been selected and opened, it may show initially show some information not relevant to the file. Click play (forward arrow) to play the file. Click the Internet Explorer icon to start Google Map. The video will play with correct information. Click the scissors if you want to make a snapshot at any time.
- Sample of Playback Screen:
Cautions of Use
- The DVR must be powered within 5V±5% DC. Use the supplied cigarette lighter adapter. Some models of vehicles may have the cigarette lighter power supply cut off when the engine is OFF. The DVR will not work under those situations.
- A new SD card must be formatted by the supplied software player first to be used properly. A click of the yellow hammer and screwdriver button will initiate formatting
- GPS positioning and car speed recorded will be affected by various factors such as the weather and whatever metallic content the car windscreen may have etc
- Infrared recording starts automatically according to the lighting condition in the car
- The software is ready to use. However, you may change the way the software is set up by clicking the lock icon (4th from the LHS). The set up menu is quite intuitive. If needed, email
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it
for help stating Vehicle DVR technical support as the email subject matter.
Detailed Product Specification
END
Version 20110202
|
|
|
February 2011 |
|
Compucon Vehicle DVR
Product Specification
This Digital Video Recorder (DVR) product is designed for installation in motor vehicles such as private cars, taxis, buses, vans and trucks. When installed and operating, the product will record the state of affairs as listed in (1) and achieve the effect of (2) and the function of (3) as explained below.
- Information recorded or available include the road and traffic conditions in video, the inside car cabin situation in video, audio as recorded and the volume is adjustable, speed of the car in numeric KPH, direction of the car as shown on a compass, location of the car as shown on a map and in terms of latitude and longitude, the shock position of the car in 3 dimensions, and finally the date and time of the recording.
- Deterrent to the driver or people inside the car cabin as they know their activities will be recorded
- Evidence of activities as recorded
Major Product Features
- There are 2 cameras embedded in the product and their lenses are located on the front end and back end of the unit as shown in the picture within the circle below.
- There are 3 plastic suction hooks for attaching the DVR to the windscreen or any other surface suitable for holding the DVR. The hinge connecting the hooks to the DVR is adjustable and this allows the cameras to be positioned as desired within limits. The DVR is quite light (about 140g), and the hooks are adequate to hold the DVR in position.
- There are 4 Infrared LED on the side of the DVR facing inward the car cabin and they are on the LHS of the camera. This set of Infrared LED is for night-mode operation when visible light is too low. The DVR will start up in night mode for the first 30 seconds, and determine if it should stay on night mode or day mode for subsequent operation.
- The DVR will record data onto a flash card (Micro SDHC Class 6 to be exact). Micro refers to its very small size, see picture. SD stands for Secure Digital which is a name given by the initial technology developer. HC stands for High Capacity. Class 6 means the card is capable of writing at 6MB per second.
- Compucon supplies one 8GB of flash card with the product. However, customers can use bigger capacity such as 16GB and 32GB which will support recording for a longer period (proportionally). We estimate that 8GB supports 8 hours of recording.
- The flash card should be inserted in the DVR unit as shown in the picture on the RHS before the DVR receives power. It is OK to change the flash card at any time as long as the DVR is not on power. Remove the flash card with recording and insert it in a Reader which has an USB connector. See picture on the LHS. Connect it to a PC and the PC will be able to display the recording on the screen. The Reader is supplied by Compucon as part of the product.
- The flash card contains the software needed to play the recording. The software will work under Windows XP, Vista or Windows 7. A separate CD with the software is supplied as part of the package for back up purpose.
- The DVR is powered by the cigarette lighter in the car at 5V. Such an adapter with cable for connecting the DVR to the cigarette lighter is included in the product package.
Operation of DVR
- The DVR will automatically operate once it has received power. Therefore always connect power only when you are sure the DVR should start operating. Disconnect power before attempting to remove the flash card out of the DVR or putting the DVR away.
Playback of Recording
- It is OK to copy the newly recorded file into a PC and save the file in the PC as the archive along with other files. As soon as the software is initiated, a full screen will be displayed and the 6 icons below at the bottom RHS corner are needed for display control.
- Click the file open icon to select the desired file to play back. When the file has been selected and opened, it may show initially show some information not relevant to the file. Click play (forward arrow) to play the file. Click the Internet Explorer icon to start Google Map. The video will play with correct information. Click the scissors if you want to make a snapshot at any time.
- Sample of Playback Screen:
Cautions of Use
- The DVR must be powered within 5V±5% DC. Use the supplied cigarette lighter adapter. Some models of vehicles may have the cigarette lighter power supply cut off when the engine is OFF. The DVR will not work under those situations.
- A new SD card must be formatted by the supplied software player first to be used properly. A click of the yellow hammer and screwdriver button will initiate formatting
- GPS positioning and car speed recorded will be affected by various factors such as the weather and whatever metallic content the car windscreen may have etc
- Infrared recording starts automatically according to the lighting condition in the car
- The software is ready to use. However, you may change the way the software is set up by clicking the lock icon (4th from the LHS). The set up menu is quite intuitive. If needed, email
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it
for help stating Vehicle DVR technical support as the email subject matter.
Detailed Product Specification
END
Version 20110202
|
|
|
|
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