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

No. 36/2015 (Nov. 9, 2015)

New batteries from Samsung.

One of the biggest problems faced by the manufacturers and users of mobile devices is short battery life. Everyday charging of smartphones is a nuisance to their owners.
During InterBattery 2015 event in Korea, Samsung presented two prototypes of batteries. One of them, Stripe, is to be used in "wearable electronics", i.e. devices embedded in necklaces, bracelets, clothes. This is possible due to a very small thickness of the battery (only 0.3 mm) and its unique flexibility. Samsung also boasts of the largest capacity produced from the surface of a battery, which increases the operation time.
A new battery presented by Samsung
The second battery presented by the Korean company will be used in smartwatches (it will be placed in the strap). It should offer up to 50% higher capacity than the solutions used today. From one charging, a standard battery can power such a watch for 2 days, the Band battery should lengthen the time to 3 days.
Samsung has not announced the date of commencement of production of the new batteries yet, but extensive tests mean that they will be launched on the market soon.

Universal TERRA IPTV headend - an example of implementation.

The owner of a hotel had to choose a suitable TV system for his hotel. The typical solution with a traditional headend and the distribution of RF signals via coaxial cables was practically impossible, due to the lack of such cabling in the building and big problems with installation of new cables. However, the building was equipped with computer network based on twisted pair cables. So, the choice was simple - TERRA IPTV headend. The TERRA IPTV headend is a reliable and easy to configure set of IPTV streamers that convert terrestrial DVB-T/T2, DVB-C and/or satellite DVB-S/S2 broadcasts into IP stream. It is also possible to decode pay TV channels.
View of the TERRA IPTV headend composed of three sti410C R81604 and three sdi410C R81608 modules. The set of modules provides terrestrial SD/HD channels and satellite SD/HD broadcasts (from 3 multiplexes on 3 transponders, including pay TV channels) in the form of IP stream. The modules are powered from UP413 R82533 power supply unit.
The main advantages of the TERRA IPTV system:
  • possibility of watching TV on PCs, laptops etc. running free app,
  • multidescrambling (CI slots for decoding pay TV channels),
  • use of twisted-pair cables as the transmission medium,
  • conversion of channels from one multiplex (1 module),
  • low power consumption,
  • IP multicast technology saves network resources,
  • no middleware software needed,
  • easy way to extend the transmission range (through the use of a media converter and optical fiber).

Which HDMI cable to choose?

An HDMI cable is described by the standard version, length and cable type, including cross section of its wires (AWG). HDMI standard version specifies the parameters of data transmission and other features. HDMI 1.3 cables are now replaced by the version 1.4 enabling 3D video transmission and sharing Internet connection.

An important mechanism of the HDMI 1.4 version is HDMI Ethernet Channel (HEC). The Ethernet channel allows for quick, two-way communication between the Internet and HDMI devices. The connected devices can send and receive data at speeds up to 100 Mbps. With this solution, there is no need for separate Ethernet cable to each HDMI device, it is enough to connect to the LAN/Internet only one device, usually the monitor/television.
HDMI 1.3 and lower versions do not provide Ethernet connectivity,
each device with network interface requires additional connection.
HDMI 1.4 cables distribute Ethernet connection from one device to the rest.
An important parameter describing wires of HDMI cables is AWG (American Wire Gauge) - a standardized American system used to provide wire diameters. Long HDMI cables should have wires with lower AWG numbers (thicker).
HDMI cables also differ in the kind of the cable used, its shape, and additional features, e.g. round, reinforced with steel braid, or flat - easy to place e.g. under the carpet. DIPOL offers a wide range of HDMI cables supporting HDMI 1.4, from 0.5 to 20 meters.
Armored HDMI cables :
  • HDMI cable 0.5 m 28AWG v1.4 H1002,
  • HDMI cable 1 m 28AWG v1.4 H1012,
  • HDMI cable 2 m 28AWG v1.4 H1022,
  • HDMI cable 3 m 28AWG v1.4 H1032,
  • HDMI cable 5 m 28AWG v1.4 H1052,
  • HDMI cable 10 m 28AWG v1.4 H1103,
  • HDMI cable 15 m 24AWG v1.4 H1152,
  • HDMI cable 20 m 24AWG v1.4 H1202,
  • HDMI cable 30 m 24AWG v1.3 + 3D H1302.
Flat HDMI cables:
  • HDMI cable 2 m 28AWG v1.4 H1024,
  • HDMI cable 3 m 28AWG v1.4 H1034,
  • HDMI cable 5 m 28AWG v1.4 H1054,
  • HDMI cable 7 m 28AWG v1.4 H1072,
  • HDMI cable 10 m 28AWG v1.4 H1104.

Fiber optic transmission windows.

The transmission of data via optical fibers is usually performed in one (or more) "telecom windows" - the wavelength bands that are the most favorable for this purpose. The windows have been selected based on the characteristics of signal attenuation in the transmission medium.
There are three main causes of signal attenuation in optical fibers:
  • wave-guide loss - results from non-uniform, imperfect structure of fibers due to limitations of the production process. It applies to the geometry of the core and non-uniformity of the refractive index in the core and cladding;
  • absorption - light energy absorption by the particles of the fiber; it depends on the method of doping of the core in the manufacturing process and its cleanliness; an increased absorption is caused by chromium, copper, iron atoms and especially by OH- ions (moisture);
  • Rayleigh scattering - consists in scattering light pulse in all directions as a result of inhomogeneous refractive index in the core due small changes in the density or composition of the glass. The Rayleigh scattering is inversely proportional to the fourth power of the wavelength.
The selection of transmission windows has been based on the characteristics of signal attenuation
in the transmission medium caused by the waveguide, absorption, and Rayleigh scattering losses.
Individual transmission techniques are implemented in specific telecom windows, e.g. DWDM multiplexing technique mainly uses the third and fourth windows. Thanks to technological advances in the production of optical fibers, it was possible to reduce the effect of OH- ions in the vicinity of the 1400 nm wavelength (G.652D fiber) and create another, fifth transmission window.

How to manually trigger video and screenshot recording from Signal IP cameras.

Signal IP cameras allow users to manually trigger video and screenshot recording without an additional software. After logging to the camera via IE browser (by default - user name: admin, password: admin), the main menu provides Record and Capture buttons. By pressing the Record button, the user starts recording of the video on the hard drive of the computer running the browser (by default, in the C:/Recordaddres/IP cameras path). To stop the recording, the user should press the button again. Similarly, after pressing Capture button, the user saves the screenshot (by default - in the C:/Capture/camera IP address location).
View of the Signal IP camera menu after logging on via IE browser
(the "Record" and "Capture" buttons are marked with yellow frame)

Control of alarm inputs/outputs in IP CCTV systems.

Modern video surveillance systems should often be integrated with signalling devices and actuators. The integration can be implemented by the use of alarm inputs and outputs of cameras and/or NVRs. For example, an alarm input can be connected to a sensor that can trigger the recording of the video from a camera. An output can trigger a low power actuator (max. 12 VDC, 1 A) such as the SPL-2010 R G4020 signalling device.
View of the I/O Control window of the iVMS-4200 app
The control of the alarm inputs and outputs can be performed directly from the NVR, or, in a much more convenient way, via iVMS-4200 application. The application enables the user to monitor and change the states of the inputs and outputs remotely.

New products offered by DIPOL

Ferguson AF-3318 SE DVB receiver (FTA)
DVB-T/T2 Receiver Ferguson Ariva T750i A99315 receives free to air terrestrial TV channels broadcast in MPEG-2/MPEG-4 systems, providing perfect image quality both in standard definition (SD) and high definition (HD) plus excellent sound (Dolby Digital Plus). The built-in USB port allows the user to record the currently viewed program on a USB memory device (PVR function) and play back the recordings as well as a wealth of multimedia, including mp3 files, MKV and XviD videos. The device consumes less than 1 W power in standby mode.
Signal HDMI Extender (over power line)
Signal HDMI Extender (over power line) H3611 allows the user to send a high-definition HDMI signal (from sat receiver, computer, multimedia player, Blu-ray player, etc.) to HD-enabled television or monitor via the existing AC power network in the home, office etc.
Self-supporting Universal Cable ULTIMODE FC.E-2SM (2x G.657A2)
Self-supporting Universal Cable ULTIMODE FC.E-2SM (2x G.657A2) L7202 is a universal fiber optic cable in LSOH jacket, so it can be used outdoors and indoors. Strengthened with aramid fibers, the cable can withstand the load of 800 N at a span of 150 m. Thanks to this feature, the cable is ideal for suspended lines, e.g. for connecting security cameras and access points placed on poles. The cable is composed of two single-mode G.675A2 fibers (diameter of 250 μm, minimum bending radius of 7.5 mm).

New Library titles

SADP (Search Active Device Protocol) is a free and simple to use utility for searching Hikvision IP cameras and Hikvision DVRs/NVRs in the local network. The online device search tool can also be used for modification of network parameters of the Hikvision devices, including the change of passwords or recovery of default passwords (when the user lost/forgot a password). It can eliminate problems with duplicated IP addresses (often occurring after connecting a number of new devices), even in the same network class... >>>more

Worth reading

EXIR infrared technology. Hikvision IP cameras with housing type 2, 3 and T have IR light sources made in Exir technology. The sources based on the new light-emitting technology have up to 30% higher efficiency compared with traditional LED arrays. Additionally, they produce LED light in the form of a rectangle in order to fit the camera's field of view (with 4:3 or 16:9 aspect ratio). This further improves the efficiency of the lighting and eliminates the excessive light intensity in the central part of the scene, typical for majority of IR illuminators. Exir illuminators ensure much better luminance uniformity, including the corners of the scene... >>>more
Images of IR light distribution from a typical (on the left) and Exir illuminator (on the right).
The IR light from Exir illuminator fits the camera's rectangular field of view, including the corners.
Coaxial Cable (75 ohm): TRISET PROFI 120dB A++ 1.13/4.80/6.90 [100m]
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