Implements BR10 software upgrade to resolve the issue. Use of ITIL Service. With that information the network can check / test the validity of the. Simulations in [20] have compared HPR to TARA and SHR. TARA has shown to have better performance than HPR and SHR at high packet arrival rates but has significantly. CCTVForum.com: Your source for cctv digital video security discussion forums. Got Questions - Get Answers.
A decade of digital: The SHR 2162 DVR from Samsung Electronic What our experts say The video surveillance industry is not one for birthdays, anniversaries or memorable dates but here’s one that might be worth remembering. It is now ten years since the first mainstream hard-disc based digital video recorders went on sale in the UK. In fact our first DVR Bench Test was back in 1995 and we were suitably impressed by the Geutebruck Multiscope, which boasted what was then a whopping 540 megabyte hard drive with the capacity to record four video channels for up to two weeks. It cost an eye-watering GB pound 5200; allowing for inflation that comes out at between GB pound 6500 and GB pound 7500 in today’s money.
A decade later and the current state of the art in DVR technology is ably represented by the Samsung SHR 2162. The model we are about to look at is a 16-channel design fitted with a single 160-gigabyte drive (expandable to 750Gb on three drives). With so many variables to contend with, working out the maximum recording time is a lot more complicated these days. Suffice it to say that at the lowest speed and compression settings it would be many months, rather than a couple of weeks, before the full complement of drives were full up. Needless to say prices have fallen somewhat and the SHR-2162 is now selling for around a third of the original cost of its venerable predecessor.
Quite a few other things have changed. Early DVRs used the JPEG data compression format, which was initially devised for still images; the 2162 uses the far more efficient MPEG 4 compression scheme, which is capable of very high quality real-time recording on all 16 channels, and as an added bonus it can also record four audio channels (ADPCM compression). Before we move on a few words about resolution and recording modes. The 2162 uses two image sizes, CIF (352 x 288 pixels) and Half D1 (720 x 288); in both cases there are four quality settings (low, standard, high and very high) with a maximum recording speed 25fps. For the record the available recording speeds are 0.8, 1.6, 3.1, 6.3, 12.5 and 25fps. The DVR operates in triplex mode, allowing simultaneous recording, playback and monitoring, and in what is another sign of the times, it has network connectivity so that both images and sound, as well as control functions, can be accessed and recorded on a PC connected to it via a LAN or over the Internet.
Recordings can be exported and archived in a variety of ways, but the easiest method is to use the built-in CD-RW drive. Additionally the machine has two USB 2.0 ports for connection to external storage devices, including memory sticks and drives. Three other features on this machine are worth mentioning, and once again they are not something you would have seen on first generation DVRs. They are motion detection on each video channel, tied in with the DVR’s extensive alarm facilities. It has on-board PTZ camera control and it comes with a remote control handset.
It’s a welcome and genuinely useful addition and we suspect it owes something to Samsung’s long involvement in consumer electronics where everything from toasters to TVs come with a button box these days. Physics Animations For Class 11 Free Download. There are more signs of Samsung’s high-street heritage in the design of the front panel, and it is a very pretty looking machine with fancy chrome buttons, eye-catching black livery and neat, well-labelled buttons. The left side of the fascia is taken up by the CD-RW loading drawer. In the middle there is a bank of 16 camera selector buttons and on the right side three more groups of buttons, used to select monitor multi-screen view and various functions covering operating mode, recording and playback, PTZ operations and driving the on-screen menu. Immediately to the right of the display mode buttons there’s one of the two USB ports and along the top edge of the panel is a row of LEDs indicating power on, alarm, HDD activity, network connection, backup more and recording mode. On the back panel there’s the usual forest of BNC sockets for the 16 camera inputs and their respective loop-throughs; BNCs are also used for the main and spot monitor outputs, VGA and S-Video outputs are also provided. Five phono sockets handle the four audio inputs and one output; close to the middle of the panel there’s the LAN socket, a 9-pin D-Sub for RS-232 serial communications and the second USB port.
To the right of is that a multi-way spring terminal for alarm inputs and output plus RS-485 communications for PTZ telemetry. On the far right are two cooling fan grilles and the mains socket. The interior of the unit is populated by a single large motherboard and the drives, which are standard off-the shelf PC components. The quality of construction is very good indeed, with easy access to the HDD bay and cabling so that extra drives can be fitted with a minimum of fuss. Setup and operation Installation poses no particular problems, though for some reason best known to Samsung there is no mains on/off switch, so it powers up as soon as the power cable is plugged in and the 2160 boots into its default configuration in just under a minute.
It is ready to run on the factory settings and goes directly into Record mode. Basic operation is largely intuitive with the picture mode button stepping through a range of display formats that includes single screen, 4×4, 3×3, 2×2, 1+4, 3+4, 1+7, picture in picture and sequence. Pressing the Play button opens the Search menu with five tabs offering a choice of Search Modes, by Calendar, Date/Time, GoTo First, GoTo Last or Backup/Archive media. Once a selection has been made, the selected sequence or camera channel begins replay, with direction, speed, picture freeze and a simple zoom option controllable from the front panel or remote handset.
In order to tailor the systems, with its many and various settings, it is necessary to delve into the PIN-protected menu-driven on-screen display. The on-screen display is a classy looking affair – probably another spin-off from its consumer division – with crisp, bold and easy to read graphics on a semi transparent background, so the monitor displays underneath can still be seen.
The main menu comprises eight selections, starting with System. This has 10 sub menus covering a range of setup and housekeeping functions, including time and date setting, password, Load factory defaults, System and Event logs, System information, HDD setup and operating mode (stop or overwrite when full), remote control/keyboard setup, and System Shutdown. Menu item number two is Camera, and this branches to three sub-menus: Camera Configuration, PTZ Device and Screen Setup. Configuration covers camera enable/disable, audio recording, camera title, and auto sequence interval. PTZ Device deals with telemetry, a simple drop-down menu for each camera lists all supported protocols. Screen Setup includes brightness, colour and contrast settings for each video channel. The next menu is Monitoring, which concerns setting up Event Monitoring, setting up the on-screen graphics, Main and Spot monitor configuration, and sequencing.
The fourth menu is Record mode and this open three sub menus: Recording Quality & Auto Deletion, Record Rate, Video Size and Event Recording Duration. Record Quality lists the options for each camera in Normal and Event recording modes. Event Recording, the fifth menu, also has three sub menus, for Alarm Detection setup, motion detector setup (26 x 20 target grid, 3 sensitivity levels) and Video Loss detection.
Item six is Record Schedule and this generates a simple calendar display, split into days of the week and hourly intervals, for setting up Event, Continuous (or both) recording for each camera. Menu seven is used to setup backup recordings, by specifying the required cameras and start and stop times, after which the recording, in AVI format, is burnt to a blank disk or memory device. The final item is Network and the by now familiar sub menus cover things like IP, transfer protocol and Callback settings. Thanks to the clear and legible displays and a better than average instruction manual setup is, for a change, a relatively straightforward business. Remote network control and monitoring relies on a Viewer utility program, supplied with the unit, and it will run on Windows 98/SE/ME, Windows 2000 and XP PCs. We discovered a minor bug in the system that prevented the viewer from booting up on one of our test systems. This was eventually traced to a secondary video card, used to generate a twin monitor display, which the viewer took exception to; reverting to a single monitor display fixed the problem.
The Viewer mirrors most of the setup functions of the DVR’s own menu system, with a number of additional facilities specific to network operation, including local recording on the PC, slightly easier to manage Search facilities plus image capture and print. Monitoring is also a lot simpler on a PC, not least because the controls – mostly simple mouse clicks – are much easier to use than the buttons on the front panel or remote control. Performance Looking back at the reviews of early DVRs it is easy to see how much picture quality has improved over the years. The benchmark a decade ago was analogue VHS and few, if any of those pioneering machines could match the resolution and colour fidelity of tape, and still have useful recording times of more than a few hours.
Picture quality is no longer the issue it was and the 2162, like many of its contemporaries, have now reached the stage where the determining factor is no longer the recording device, but the camera. Resolution on the two highest quality settings rated as very good to excellent with plenty of fine detail and sharp accurate colours, but even the lowest setting is still better than a whiskery VHS recording. Moreover, image stability, slow and fast replay and noise levels are all markedly better than tape, at all quality settings. It’s also worth re-iterating that searching out a segment of a recording is a lot easier on a disk-based video recorder and the 2162’s Search facilities are a definite cut above the average, being simple and intuitive to use. We have championed audio recording on DVRs since day one but even now some low end and even one or two mid range machines lack this important facility. Needless to say the four recording channels on the 2162 have earned it several Brownie points.
Compared with live viewing and playback on a decent monitor, network operation does rob the image of a small amount of detail, contrast and colour also suffers but the reduction in quality is relatively small and more than offset by the convenience of remote monitoring, control and local recording. There’s a similar small reduction in quality on recordings exported to CD, but again it is far from serious and still miles better than a second generation tape copy. What the manufacturer says Aasset Security Group has unveiled a new range of Samsung network-ready multi-channel digital video recorders (DVRs). All models share the same number of advanced technical features, with expandable storage capacities and 10 major PTZ built in protocols (including Pelco P, Pelco D, Vicon, VCL/Honeywell, Panasonic, Philips and Samsung). Additionally, these DVRs are provided with free viewer network software enabling use as a multi-site, multi-viewer system.
All units use exactly the same embedded operational platform and come with motion detection, pre- and post- event recording, and a built-in scheduler for time, date, camera, record rates per channel, multiple alarms, video loss and event search. The 4-channel SHR-2040 DVR, with a footprint of only 215x337mm, records real-time MPEG4 high quality images at up to 100ips and is provided with 4 channels of audio. Supplied as standard with a 160Gb internal HDD storage capability, this is expandable up to 500Gb and the unit can simultaneously record, display and replay (Triplex function). This 12v DC model comes with a mains adaptor and a 3-year warranty. The SHR-2042P utilising a larger chassis is also available with built-in CD-RW as standard for easy back-up purposes.
Again recording at up to 100ips complete with four channels of audio, this DVR’s internal HDD capacity can be increased from the standard 160Gb to 250Gb, 500Gb or 750Gb capacities. The SHR-2162P is the 16-channel network-ready DVR with a built in CD writer. The unit comes with a 160Gb HDD and can be expanded to 250, 500 or 750Gb internally. Like both its sister models in the range, it’s also supplied with up to 100ips recording capability and 4 channels of audio.