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

No. 1/2020 (Jan. 6, 2020)

Is language learning a thing of the past?

Communicating in languages you don't know may no longer be the stuff of dreams. Google has just announced its "Google Assistant" app has been upgraded to include a new real-time translation mode to help break down language barriers. Known as the "interpreter mode", the functionality currently supports 44 different languages, including Polish, expanding on what "Google Translate" has offered thus far.
Interpreting with the Google Assistant
The Google Assistant for Android (v5.0 and above) or iOS (v10.0 or above) can be used on a smartphone or tablet. Once installed and launched, the app will respond to commands such as "Translate conversation from [language] to [language]" or "Hey Google, help me speak English" to automatically start the interpreter mode. Of course, the requested language must be supported by the app. Three modes are available: automatic, manual, and keypad. In the first, the language is detected automatically, and in the second, you have to choose it yourself, and the keypad mode allows you to type in a text. Apart from providing voice translation, the app will also transcribe the conversation and display it on the screen.
Besides the obvious benefit of breaking language barriers in the daily lives of average users, the Google Assistant is sure to facilitate communication at hotel reception desks and in ticket offices at railway stations, in cinemas, etc, where it will enable smooth communication in practically any language.

Composite masts - cheap shipment, no disassembly.

Being able to join masts together is particularly important when you want to build a roof structure longer than the standard height. Another important advantage has to do with cheap and easy shipment (delivering a long mast is often very expensive or impossible). DIPOL currently offers a 1.5 m long antenna mast (E9038151, diam. 38 mm, 1.5 mm walls) designed to form an element of a larger whole. A special embossing at the tip makes it possible to connect two elements: one segment should be driven into another so that their embossings overlap by 12 cm. Once the segments are joined together, they cannot be disassembled.
Two 1.5-m-long E9038151 masts joined together form a permanent whole and cannot be disassembled.
The maximum permissible height of the composite mast depends on :
  • the selected safety coefficient,
  • the weight and surface area (wind resistance) of suspended elements,
  • the antenna arrangement (larger antennas should be placed at the bottom),
  • the type and rigidity of the wall/chimney clamp,
  • the type and number of additional anchoring clamps.

Measuring optical signal strength at network terminals.

Examples of passive optical networks (PON), where receiver signal strength is of key importance, include fiber-optic TV systems, consisting of optical transmitters, passive elements such as cables, splitters, attenuators, and optical receivers.
The most important goal in such networks is to ensure that optical power at the input of the receiver falls within the range specified by the producer. Interestingly, the power often proves too high rather than too low. It is a perfect example of a situation in which it makes little sense to report the attenuation of the optical path alone, since despite excellent passive elements and appropriate measurements, the system may not work. The only exception is when the cabling is laid first and the devices are mounted later. In this case, both parameters (path loss and receiver signal strength) should be tested separately.
Antenna Triplexer Terra DC015L (VHFI/II+FM-VHFIII-UHF)DAB / DVB-T Antenna: DIPOL-4/5-12UHF TV Antenna: DIPOL 44/21-60 Tri DigitFM Antenna: Dipol 1RUZ PM B (omnidirectional H+V)QUATRO LNB: Inverto BLACK Ultra 0.2dBTV Optical Transmitter TERRA OT501W (SAT/DVB-T, 6dBm)Optical Power Meter: TM503NSatellite Dish TELMOR 120 TT Standard (white)Optical Receiver TERRA OR501W (QUATRO + DVB-T/DAB/FM)
The receiver signal level in shared SMATV systems can be measured with a TM503N L5816 meter.
In this case, the measurement report should provide data on the input signal level at each of the six receivers. Measurement results should be compared with the permissible power range specified in the receiver datasheet.

Using IP cameras in HD-TVI DVRs - Enhanced IP mode.

Analog channels in Hikvision Turbo HD DVRs can be replaced with IP channels in a 1:1 ratio, which means that any analog channel can be replaced with an IP channel.
In addition, the DVRs offer a special "Enhanced IP" model to increase the maximum number of supported IP cameras, available once all analog channels are disabled. It will depend on the DVR model and the number (n) of analog channels and can be calculated using the formulas shown in the tables below (the figure in brackets represents the maximum resolution of IP cameras).
For DVRs of up to 16 channels:
7300 n+n/2  (6 MP) n+n  (8 MP)
7200 n+n/2  (6 MP) n+n  (8 MP)
7100 n+n/2  (6 MP) n+n  (8 MP)
For 24- and 32-channel DVRs:
7324 n+12  (6 MP) n+16 (8 MP)
7332 n+16  (6 MP) n+16  (8 MP)
Multi-system Ceiling Camera: Hikvision DS-2CE56H0T-VPITF (5MP, 2.8mm, 0.01 lx, IR up to 20m, HD-TVI, AHD, HD-CVI, CVBS)Multi-system Compact Camera: Hikvision DS-2CE16H0T-IT3ZF (5MP, 2.7-13.5mm, 0.01 lx, IR up to 40m, HD-TVI, AHD, HD-CVI, CVBS)Ceiling IP Camera: Hikvision DS-2CD1143G0-I (4MP, 2.8mm, 0.028 lx, IK10, IR up to 30m, H.265/H.264)Compact IP Camera: Hikvision DS-2CD2085FWD-I (8MP, 2.8mm, 0.028 lx, IR up to 30m, WDR, H.265/H.264)PoE Switch: ULTIPOWER 2216af (16xRJ45/PoE-802.3af, 2xRJ45-GbE/2xSFP), managedHD-TVI TURBO HD 3.0 DVR: Hikvision DS-7208HUHI-K2 (8ch, 5MP@12fps, H.265, HDMI, VGA)
In the Enhanced IP mode, the DS-7208HUHI-K2 M75509 DVR will support up to 16 cameras
(8 analog cameras of up to 5 MP and 8 IP cameras of up to 8 MP).
If the analog cameras are disabled, 16 IP cameras (up to 8 MP) can be connected.
The Enhanced IP mode eliminates intelligent image analysis in analog channels and limits the video resolution of HDMI/VGA outputs to 1080p. The mode can be switched on only with local access to the menu of the DVR.

AXHub Hikvision wireless alarm systems.

The AXHub Hikvision alarm system is an ideal solution for all those who wish to protect their property against unauthorized access but want to avoid ruining their home to lay the cables and mount the system.

A good solution is to purchase the DS-PWA32-NST G01219 kit and adapt it to the local requirements. The system is very simple, fast and intuitive to mount. Polish voice alerts facilitate installation, testing, and ongoing support. Wireless motion detectors connected to the control unit are fitted with signal strength indicators (SSIs), allowing users to instantly verify their range and on-site operation. Not unlike video intercom or monitoring systems, AXHub is compatible with the Hik-Connect app, which allows users to control its work and receive alerts in any location, as well as to integrate the whole Hikvision security system in a single app. Two IP cameras can be connected to enable video verification and create 7-second recordings (spanning 5 seconds before and 2 seconds after the alarm is activated) for extra security. Three idependent transmission paths (Ethernet, GPRS, and WiFi) guarantee that the user will be alerted even if one fails. The control unit can be configured and used via a web browser and client applications.
A single-family home using the AXHub Hikvision wireless alarm system

A simple GSM amplifier system.

The image below shows a basic GSM amplifier system in a single-family home, which enables users to use their cellphones even when low signal strength inside the building would otherwise make phone calls impossible. The system allows users to make calls and use mobile internet (GPRS, 3G 900 MHz).
GSM Amplifier/Repeater SIGNAL GSM-305 (without PSU)GSM/DCS/UMTS Antenna: TRANS-DATA DW3-AN-plug for Tri-Lan 240/H-155 cable (6 GHz)Coaxial Cable 50 ohm: Tri-Lan 240 [1m]Two-way TRANS-DATA GSM SplitterGSM/DCS/UMTS Antenna: TRANS-DATA DW3-BGSM/DCS/UMTS Antenna: TRANS-DATA KYZ8.2/9.5N-plug for Tri-Lan 240/H-155 cable (6 GHz)SMA/RP Female Connector for Tri-Lan 240/H-155 cable (6 GHz)
A GSM amplifier system in a single-family home
The system above consists of the following devices:
  • A Trans-Data KYZ8.2/9.5 GSM/DCS/UMTS antenna (A741030), designed to pick up and transmit signals to the BTS.
  • A Signal GSM-305 GSM amplifier (A6765), which amplifies GSM (EGSM) signals in both directions: to and from the BTS.
  • A two-way splitter (A6812), which distributes the signal between two indoor antennas.
  • A Trans-Data DW3-A GSM/DCS/UMTS antenna (A741001) and a Trans-Data DW3-B GSM/DCS/UMTS antenna (A741002), which amplify and distribute GSM signals inside the building. A741001 is designed for suspended ceilings, while the surface-mount A741002 can be used with concrete ceilings.

New products offered by DIPOL

TV House Amplifier: TERRA MA050L
TV House Amplifier: TERRA MA050L R82050 is dedicated for use in small shared antenna systems with more than ten outlets, e.g. in single-family and multi-family homes. Its basic role is to amplify the signal so that it can be picked up by several or more receivers. The amplifier has separate inputs for FM+VHFIII (47-108/174-230 MHz) and UHF (470-790 MHz) bands, with a max. gain of 30 dB in the former, and 34 dB in the latter..

Power Supply with PoE Adapter: ULTIPOWER (52V, 65W)
Power Supply with PoE Adapter: ULTIPOWER (52V, 65W) M1895 is dedicated for powering devices using PoE technology (max. power: 65 W). Twisted pair cables are used both for data and supply voltage transmission. Compliance with IEEE802.3at/af allows the power supply to work with any device that supports the same PoE standard.

Two-way Wireless Outdoor Siren Alarm: Pyronix DELTABELL/R-WE (red)
Two-way Wireless Outdoor Siren Alarm: Pyronix DELTABELL/R-WE (red) G01707 is a wireless outdoor visual and acoustic alarm dedicated for use with AXHub and Pyronix Enforcer systems. In the event of an alarm, the user is alerted by a built-in LED (a red flash) and a piezo sounder.

Worth reading

Reflectometry - a case study. Reflectometers can provide users with a lot of information on tested fiber-optic lines. The measurement method is also recommended for troubleshooting and fault location in the optical path. A sample reflectogram is shown below. The measurement in question was performed in an actual network designed for the distribution of SMATV signals...>>>more
A sample reflectogram. The measurement was performed with the use of Grandway FHO3000 L5828.
Vertical mounting system in 19" RACK cabinets