DIPOL Weekly Review – TV and SAT TV, CCTV, WLAN

No. 22/2020 (June 1, 2020)

The fastest camera in the world.

In an article published in the Nature Communications journal, scientists from the California Institute of Technology presented a new imaging technique that can capture videos at a shocking 70 trillion (70x1012) frames per second. In earlier works on imaging techniques based on silicon sensors, the rates of up to millions of frames per second were achieved. It is not enough, however, to capture and document the most volatile physical phenomena such as nuclear fusion or fluorescent radioactive decay. Scientists usually investigate these ultrafast effects by triggering them multiple times and repeatedly observing them in different time intervals. Such approach reduces considerably the possibility of registering and observing some phenomena.
Diagram of the CUSP system
(source: http://www.nature.com)
The Lihong Wang technique, developed by the professor of medical and electrical engineering sciences at Caltech, is known as the Compressed Ultra-Fast Spectral Photography (CUSP). It utilizes short laser light pulses lasting one femtosecond (0.000.000.000.000001 seconds). The entire system is split into two parts: the imaging and lighting sections. In the imaging section, an interchangeable system of lenses records the scene while splitting the light beam into two paths. At the end of one of them, there is a camera recording the non-diffused light. In the second path, there is a DMD (digital micromirror device) module for encoding the recorded image into a pseudo-random binary stream which, in the form of light, is then transmitted to the streak camera. Such cameras record changes in light intensity vs. time (they are used, among others, in autonomous vehicles as part of the LIDAR system). The lighting (illumination) section generates and directs ultra-short laser pulses to the scene being recorded. The system generates 70 trillion pulses per second, which translates into the same number of fps of the recorded footage.

TRISET B2CA - halogen-free coaxial cable.

From July 1, 2017 in the EU, all installation cables in buildings are considered to be construction products subject to applicable regulations. The CPR Directive requires manufacturers to develop and make available the Declaration of Performance (DoP), as well as to mark products covered by the relevant CE mark. The EN50575 specifies the requirements for: performance in fire conditions, test and evaluation methods for power, control and telecommunications cables used in buildings with a specific fire resistance class. With the introduction of the common European reaction to fire classes, designers and architects have at hand clear regulations regarding the use of the appropriate types of cables. To achieve increased fire safety levels, cable manufacturers recommend the use of B2CA cables in special-purpose buildings that must meet very tight safety requirements (e.g. in hospitals, nurseries, high-rise buildings, office buildings and nursing homes).
A new type of coaxial cable, TRISET B2CA E1020_500 suitable for MATV/SMATV antenna systems in public buildings is now available in DIPOL offer. The cable has a LSOH sheath (halogen-free insulation). In the event of a fire, the cable does not spread flame, smoke emission is very low and the released gases are not corrosive.
Coaxial Cable (75 ohm, class A++): TRISET B2CA 120dB 1.05/4.6/6.9 [500m]
TRISET B2CA with the LSOH sheath has an inner cooper conductor with a diameter of 1.05 mm and triple shield (Al/PET/SY foil (first) bonded to the dielectric + 82% density braid + Al/PET foil (second) boded to the sheath)
Key features:
  • complies with A++ class requirements
  • reaction to fire class acc. to CPR - B2ca-s1a,d1,a1
  • 1.05 mm copper core
  • low loss
  • high screening efficiency
  • 82% braid coverage
  • 5-year warranty
  • LSOH cable

Optical video converters – PTZ control.

All models of video converters Ultimode support RS485 data transmission, e.g. control signals to PTZ cameras. The transmission does not require any additional configuration, it is only important to properly connect the wiring and employ typical ready-to-use resources of CCTV systems implemented in PTZ cameras, DVRs, keyboards or other control devices.
HD-TVI TURBO HD 3.0 DVR: Hikvision DS-7204HUHI-K1 (4ch, 5MP@12fps, H.265, HDMI, VGA)TVI-FO Video Converter ULTIMODE HDTVI-201 (1ch, SM, 20km)TVI-FO Video Converter ULTIMODE HDTVI-201 (1ch, SM, 20km)PTZ Camera: N-CAM 870 (HD-TVI/AHD/HD-CVI, 1080p, 5-50mm 10x motozoom, 0.01 lx, IR up to 80m)
The concept of ​​using optical video converters.
Transmission of video signal from the camera to the DVR and PTZ camera control.
The requirements for the communication between a control unit or DVR and a PTZ camera:
  • connection between the RS485 interface of the video transmitter and the PTZ camera (with two wires, "+" and "-"),
  • setting DIP switches the address of the PTZ camera and the type and speed of serial data transmission,
  • in the control unit or in DVR select the same parameters for the camera with the preset address.
The most common reason for the lack of communication between a PTZ camera and the control unit or DVR is inappropriate configuration of the transmission protocol on one or two sides of the link. It is necessary to set on both sides the same protocol and data rate. The most common protocol is PELCO-D or PELCO-P, with data rate of 9600 bps.
If the external keyboard is not used to control PTZ, only the DVR (controlled as part of the HD-TVI protocol), the RS-485 port of the DVR should be connected to the receiver of the video converter set. With no such connection, it will not be possible to control the camera, since the control signals in the coaxial cable (HD-TVI) are not transmitted by optical fiber (only video signal is transmitted).

Support for 8 MP cameras in HUHI series DVRs.

Cameras with a resolution of up to 8 MP are available in the TurboHD system. Such a high resolution is ideal for monitoring wide scenes, ensuring the right image quality expressed as pixel density, i.e. the number of pixels per meter of the height of the observed frame or object. With 4K resolution, it is possible to record four times more details than with cameras having the 2 MP (1080p) sensors, and thus a more useful image is obtained.
HTHI series and selected models of the HUHI series DVRs are dedicated to 8 MP cameras (with some functional restrictions), which are listed in the table below.
Model Code No. of channels Max. resolution Megapixel rating
DS-7204HUHI-K1 M75505 4 8 MP @ 8 fps
(first channel only)
5 MP @ 12 fps
DS-7208HUHI-K2 M75509 8 8 MP @ 12 fps 5 MP @ 12 fps
DS-7216HUHI-K2 M75517 16 8 MP @ 12 fps 5 MP @ 12 fps
DS-7324HUHI-K4 M75531 24 8 MP @ 12 fps 5 MP @ 12 fps
DS-7332HUHI-K4 M75532 32 8 MP @ 12 fps 5 MP @ 12 fps

Dedicated controller for the Omada TP-Link system.

The OC200 N2560 controller has been designed to centrally manage a whole network of EAP series devices. Features including as real-time monitoring of traffic statistics and their analysis through built-in data visualization tools, guest authentication via the captive portal, system upgrading and restarting, and easy network scaling - will help manage the WiFi network.
EAP System Controller: TP-Link Omada Cloud Controller OC200
EAP TP-Link Omada Cloud Controller OC200 N2560
Key features:
  • Central management of Wi-Fi network,
  • Network management from the cloud,
  • PoE (802.3af/802.3at) for easy installation,
  • High quality device with efficient chipset, USB port for automatic backup, solid metal housing,
  • Convenient network management via Omada application,
  • Multiple guest logging options (Facebook, SMS, Voucher system).
With the controller, the network administrator can set the authentication of wireless clients through a captive portal. This method requires the user to perform appropriate actions (such as approving conditions of use or logging in to the system) in order to gain access to the network. These activities are then verified by the appropriate server or database prepared by the administrator.

Documenting construction progress using the Hikvision IP camera.

Hikvision IP cameras can sequentially take and record pictures, as well as they can perform such operations in response to some events. In the sequence mode, one can create e.g. the history of the progress of construction of a building. This solution saves the user a plenty of disk space (memory card/server), while ensuring that the construction process is well documented. The ideal cameras for this purpose are those with microSD interface (F or G0 and G1 symbols in the camera name). The time interval can range from 1 s to 7 days. Additionally, the schedule can be configured in such a way as to take the pictures during working hours i.e. at certain times of the days of the week, when the construction crew is on the spot, for example from Monday to Friday, from 8:00 - 16:00, e.g. with 1-hour interval (see below).
Configuration of the weekly schedule
for sequential recording
Configuration of the sequential
recording
Hikvision cameras supporting this function:
Compact IP Camera: Hikvision DS-2CD2012-I (1.3MP, 4mm, 0.01 lx, IR up to 30m)
Compact IP Camera: Hikvision DS-2CD2065FWD-I (6MP, 2.8mm, 0.014 lx, IR up to 30m, WDR, H.265/H.264)
Compact IP Camera: Hikvision DS-2CD2T22WD-I5 (2MP, 4mm, 0.01 lx, IR up to 50m, WDR)
Compact IP Camera: Hikvision DS-2CD2685FWD-IZS(B) (8MP, 2.8-12mm Motozoom, 0.011 lx, IR up to 50m, WDR, IK10, Audio, H.265)
2 MP camera
DS-2CD2023G0-I
K17631
6 MP camera
DS-2CD2065FWD-I
K17596
2 MP camera
DS-2CD2T23G0-I5
K17831
8 MP camera
DS-2CD2685FWD-IZS (B)
K17728

New products offered by DIPOL

Pole-mounted Joint Box: TRACOM MDU B16 (oval port, uncut port)
TRACOM MDU B16 pole-mounted joint box L5616 is a box-type design with 18 inlet/outlet ports. This type of a joint box is used to protect fiber optic cable strands and branching systems in overhead and wall-mounted installations. Quality polycarbonate (PC) housing is resistant to UV radiation, low (-40°C) and high (+ 60°C) temperatures and chemicals, which makes it suitable for overhead, ducting and buried cable installations.

DVB-S/S2+DVB-T/T2/C Receiver Ferguson Ariva 254 Combo
DVB-S/S2+DVB-T/T2/C Receiver Ferguson Ariva 254 Combo A99254 is suitable for the reception of terrestrial TV (DVB-T/T2), cable TV (DVB -C) and satellite TV (DVB-S/S2). One of the tuners receives the DVB-T/T2 and DVB-C signal, while the other the DVB-S/S2 signal. It is a versatile device offering excellent HD image quality. Thanks to the built-in USB port with timeshift function, you can record your favorite programs to an external storage device as well as playback your music, videos and display photos in HD quality.
Handheld Thermographic Camera: Hikvision DS-2TP31B-3AUF, for temperature measurements
Handheld Thermographic Camera Hikvision DS-2TP31B-3AUF, for temperature measurements The K04782 is a handheld thermographic camera designed for temperature measurement in real time with high accuracy of +/- 0.5°C in temperature range 30°C to 45°C. Thanks to high measuring efficiency and speed (ca. 1 s), this type of solution is ideally suited to facilities where the temperature of a large number of people has to be measured in a short time (initial screening).

Worth reading

What is the maximum range of TurboHD signal transmission? In TurboHD system, the video signal and power supply can be transmitted using coaxial cables or twisted pair cables. The transmission range depends on the cable type, required resolution and smoothness of the video. Exceeding a certain minimum results in a significant reduction in the image quality: loss of detail and blurring, and in the case of even longer distances, loss of synchronization and the image disappearance...>>>more
For the M75051 TurboHD 4.0 camera with the RG-59 cable, the range is 700 meters
People counting camera