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September 2008 |
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Analogue is the oldest technology of the 3 whereas digital is more recent and IP is the latest as of 2008. Analogue CCTV refers to use of camera, monitor and recorder which operate on analogue technology where the magnitude is represented by a continuous physical state or event (such as the position of a rotating arm to represent the hour of the day) as against digital where magnitude is represented by bits of a computer that are discrete and increment one by one (such as the number 17 for 5pm on a digital clock).
Without doubt, digital is more accurate or precise than analogue. A digital camera, for example, produces a bit map for representing a video image. However, a low resolution digital camera may produce lower quality images than a high resolution analogue camera (see CIF, D1 and Mega-pixel).
IP refers to the use of the Internet Protocol for transmission of video images on the Internet and local area networks (LAN). It requires the camera and monitoring device to be compatible with IP.
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September 2008 |
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CCTV is Closed Circuit Television.
It refers to a scheme consisting of a video camera for surveillance and a monitor for display of the video images transmitted via a closed circuit. The transmitted video is not open to any outside parties unless pre-arranged. It is not the same as broadcast television in any respect other than the use of TV set for display in the olden days. CCTV is mostly used for security or traffic surveillance. CCTV may include or exclude recording of video footage for future reference.
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September 2008 |
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CCTV is Closed Circuit Television.
It refers to a scheme consisting of a video camera for surveillance and a monitor for display of the video images transmitted via a closed circuit. The transmitted video is not open to any outside parties unless pre-arranged. It is not the same as broadcast television in any respect other than the use of TV set for display in the olden days. CCTV is mostly used for security or traffic surveillance. CCTV may include or exclude recording of video footage for future reference.
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September 2008 |
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CCTV is Closed Circuit Television.
It refers to a scheme consisting of a video camera for surveillance and a monitor for display of the video images transmitted via a closed circuit. The transmitted video is not open to any outside parties unless pre-arranged. It is not the same as broadcast television in any respect other than the use of TV set for display in the olden days. CCTV is mostly used for security or traffic surveillance. CCTV may include or exclude recording of video footage for future reference.
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August 2008 |
Compucon supplies UPS (uninterruptible power supply) units and 2 of them are capable of taking additional battery packs for extending the run time after the wall mains have been cut off and the UPS has cut in for supporting the computer(s) connected to it. The table below shows the run down time of a Line Interactive Model with or without battery pack extensions. It has assumed a power factor of 0.6 on the safe side (Wattage = Voltage * Ampere * Power Factor), and laid out 10 levels of workload imposed by the computer(s) on the UPS. The run down time is expressed in Hour : Minute : Second.
| Model |
300VA |
500VA |
800VA |
1000VA |
1200VA |
1500VA |
1800VA |
2200VA |
2500VA |
3000VA |
| 180W |
300W |
480W |
600W |
720W |
900W |
1080W |
1320W |
1500W |
1800W |
| KIN-1500AP |
0:36:43 |
0:17:47 |
0:09:31 |
0:06:29 |
0:04:16 |
0:02:37 |
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| KIN-2200AP |
1:18:43 |
0:40:06 |
0:19:03 |
0:13:05 |
0:10:50 |
0:07:16 |
0:05:10 |
0:02:46 |
|
|
| KIN-2200AP (+
1 Battery) |
4:43:08 |
2:36:36 |
1:28:36 |
1:11:50 |
0:54:36 |
0:41:17 |
0:28:10 |
0:20:58 |
|
|
| KIN-2200AP (+
2 Battery) |
8:45:41 |
5:00:02 |
2:51:06 |
2:18:56 |
1:43:17 |
1:22:29 |
0:57:22 |
0:40:53 |
|
|
| KIN-2200AP (+
3 Battery) |
12:15:50 |
6:53:23 |
4:38:42 |
3:33:09 |
2:30:04 |
1:59:49 |
1:22:39 |
1:08:21 |
|
|
| KIN-2200AP (+
4 Battery) |
13:36:50 |
8:51:18 |
6:08:13 |
4:11:31 |
3:23:42 |
2:35:55 |
2:00:40 |
1:28:23 |
|
|
| KIN-3000AP |
1:13:34 |
0:41:12 |
0:23:57 |
0:14:26 |
0:09:00 |
0:09:59 |
0:08:24 |
0:05:59 |
0:04:27 |
0:02:22 |
| KIN-3000AP (+
1 Battery) |
4:30:00 |
2:24:40 |
1:23:57 |
1:08:41 |
0:52:56 |
0:39:35 |
0:29:50 |
0:20:55 |
0:17:19 |
0:12:07 |
| KIN-3000AP (+
2 Battery) |
7:44:33 |
4:36:24 |
2:42:12 |
2:11:42 |
1:40:22 |
1:19:26 |
1:00:35 |
0:43:14 |
0:37:13 |
0:27:19 |
| KIN-3000AP (+
3 Battery) |
11:11:53 |
6:24:22 |
4:21:56 |
3:20:50 |
2:24:58 |
1:56:09 |
1:28:11 |
1:11:39 |
0:58:22 |
0:42:08 |
| KIN-3000AP (+
4 Battery) |
15:59:34 |
9:02:00 |
5:49:39 |
4:40:34 |
3:17:14 |
2:27:21 |
2:08:51 |
1:33:01 |
1:24:45 |
1:02:06 |
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