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  4. HD FAQ


Position your dish, using whether a standard Universal LNB or the Legacy output of a SATCR LNB.

  1. Connect the lead directly from standard universal LNB (Legacy output) to the tuner connector labeled SAT IN on OSN HD receiver. If STACR LNB is already installed use the existing Legacy output.
    Standard Universal or Legacy LNB.
    SatCR LNB.
    DVB-S2: Due to the Phase Noise issues with legacy old LNBs, use of High gain Low Noise LNBs in edge of footprint is recommended.
  2. Connect the STB to an HD TV using an HDMI cable. For a normal SD TV use an RCA/cinch cable to connect the TV and the STB.
  3. For improved sound you can connect your receiver to a home cinema or Hi-Fi system using the receiver's DIGITAL AUDIO connectors. For this you will need a 75 ohm coaxial cable or a digital audio is compatible with Dolby Digital Plus.
  4. Plug the fixed lead on the 12V power supply into the socket labeled DC 12V IN in the receiver. Plug the 2-way connector on the supplied mains lead into the socket on the 12V power supply unit.
    Connect the mains plug from the 12V power supply into a main wall socket.
Booting up
Booting Screen 1
Booting Screen 2
First Time Installation Setup
Menu Language Selection
HD Resolution Selection
Verify that the STB is having Nilesat feed connected
Selection of the tuning parameters
Select a valid entry point (Transponder having valid SI)
Signal level check
Once the tuning parameters are correctely configured, the tuner is locked and the signal level is sufficient, press OK on the remote control.
A screen as on the left-side will appear displaying a 1/4 video screen of the first service in the bouquet.
Congratulations!! Installation succeeded.
Select "Channel List" to view and browse the list of services.
Installation succeded



2.1 DiSEqC Requirements

This section will guide you through, how to setup the HD OSN Zapper for multi-network configuration using DiSEqC switches.
Let's take an example of an installation having 3 Networks: Nilesat, Hotbird and Arabsat, correspondingly configured on DiSEqC 1, DiSEqC 2, and DiSEqC 3. The output of the DiSEqC switch should be connected to the tuner connector labeled SAT IN of the OSN HD Zapper.

2.2 LNB and DiSEqC setup

After the appropriate Outdoor Unit (ODU) installation has been done, the OSN HD Zapper should be configured for all the three networks. This consists of matching the setup of the LNBs with the correspondent DiSEqC ports. By default settings is matching the above given installation example as per the illustration below.
LNB 1 DiSEqC A is set for Nilesat
LNB 2 DiSEqC C is set for Arabsat
LNB 3 DiSEqC B is set for Hotbird
Select a valid entry point (Transponder having valid SI)
Signal level check
Once the tuning parameters are correctly configured, the tuner is locked and the signal level is sufficient, press OK on the remote control.
A screen as on the left-side will appear displaying a 1/4 video screen of the first service in the bouquet.
Congratulations!! Installation succeeded.
Select "Channel List" to view and browse the list of services.


  • The OSN HD services are broadcasted on the 10834 V Frequency with Baud rate of 27500 KSymbol/sec and FEC 2/3. Therefore having Low band Vertical frequencies is required to receive OSN HD services.
  • The OSN HD IRD is not intended to be installed in Frequency Shifted IF buildings. This will be made available for next phase of software development.
  • Only listed services can be received by OSN HD IRD, for the current phase we can not edit or add new frequencies.
  • Only provided OSN smartcard can be used with the OSN HD IRD in the embedded smartcard slot.
  • The CI-CAM slot is not activated for the current software version 1.00. Therefore no third part smartcard can be used. The CI-CAM slot will be activated in the next software phase.

The installer should perform a site test at each location to determine that all the services provided are listed at the levels required for distribution (see below). Any service not found as a result of the site test must be reported immediately to OSN Platform Technology so that an agreement may be made as to which services will be provided to the customer.




The installation shall supply at least four cable Integrated Reception System, comprising four cables providing individual IF Polarities, through switching devices to a minimum of one position or at least with two cables (with both polarities and bands) in each dwelling within the buildings.

3.3 Signal levels required in IF or cascaded installations

All signal levels must comply with the maximum provided for by the amplifiers installed or to be installed taking into account adequate rating for the number of channels distributed and amplifiers in cascade

The maximum/minimum levels at each outlet position on the system are as follows:

Satellite IF Digital 77 dBµV 52 dBµV

The Satellite Digital frequencies require a minimum Carrier to Noise ratio at the outlets of 9 dB.
Measurement of Carrier to Noise ratio should be made against a "noise floor" and not between transponders. The recommended frequencies to set the noise floor are 1,970 MHz. in the low band and 1,070 MHz. in the high band. Should a transponder signal be present at these frequencies than the "noise floor" frequency should be adjusted to avoid conflict.

Dishes should be aligned for maximum signal strength and carrier to noise ratios. The LNB should be aligned so that the horizontal and vertical transponders appear equal and give maximum rejection of the opposite polarity, this is to avoid cross polarisation problems.

3.4 Amplifiers and Attenuators requirements

In case the signal is below 52 dBµV, use an amplifier but the amplified signal should not exceed 77 dBµV.

In case the signal is above 77 dBµV, then use an attenuator or a splitter to reduce the signal level.

All amplifiers and distribution equipment shall be by an OSN certified supplier, See appendix B for details.

All Equipment must be able to cope with the minimum and maximum signal levels.

3.5 Multiswitch DC supply requirements

If the multiswitches are line powered from the HD IRD only, and no other power supply is used, care must be taken to ensure that the maximum current drawn, including the LNB, is less than 315 mA.

In case of using a Multi-switch, it should not have an insertion loss more than 4-6dB.

In case of cascaded switch system, make sure that there is no return DC voltage from the switch to the HD IRD tuner.

3.6 Cables requirements

All cables shall be manufactured to the relevant parts of Specification EN 50117.

All co-axial cables shall be sourced from a OSN certified supplier, see appendix B for details.

RG-6 low loss coaxial cable should be used (Typical Loss 4-6 dB/100 m).

All coaxial cable shall have a nominal characteristic of 75 ohms and will be suitable for the application concerned.

Within the head-end and network, the connection of the coaxial cable will be via F-type and IEC connectors only. All F-connectors must be crimped and IEC connectors should be of a professional design and correctly made off. All connectors should be the correct size for the cable used.

Avoid using cable jointers or passive splitters to join cables. It is recommended to use a single cable as much as possible without any joints / splits.

In case of unavoidable situations where you need to use jointers it is advisable to use Line Amplifiers instead.

All accessories must conform to the requirements of CENELEC EN 50083.

All passive accessories will be 75 ohms. All satellite IF frequencies will be connected using F-type connectors.

External equipment will be housed in suitable waterproof enclosures.

3.7 Test and Commissioning of the Installation

The installer has to supply a test and commissioning report, indicating signals at the inputs and output of the main equipment and levels received at the outlets. The installer will have to demonstrate to OSN that the picture quality on all the services stated is good.

Test equipment must be accurate to within +/- 3dB and suitable for all the services indicated. The minimum requirement is a spectrum Analyser, a simple signal strength indicator is not sufficient.


To make it easier for you to understand the wonderful world of HD, we've categorised your common enquiries into four categories: HDTV Basics, Channels for OSN HD, Registration, Pricing & Installation and Technical Enquiries.

Can I still use my Standard Definition television set to watch High-Definition channels with the OSN HD Box?

We recommend that you switch to a High-Definition television to enjoy a full High-Definition experience on OSN HD. In any case, if you remain on a non-HDTV or a standard definition television, your current OSN programming choices will not be affected in any way.

My current television does not feature an HDMI port. Would I still be able to use my TV with the new OSN HD Box?

This probably means that you have a standard television which does not support High-Definition broadcast. The High-Definition viewing experience requires an HDMI connection.

Without the HDMI port, you will still be able to channel audio and video through conventional cable and ports of your standard television to your OSN HD Box but you will only be able to watch standard definition television quality.

Can I still order pay per view (PPV) of the standard definition channels using the new OSN HD Box?

Customers can order PPV via the phone but the back channel application is not available at the moment. We will make an announcement when the service is available.

Does the High-Definition service support surround sound?

Only certain High-Definition channels and programmes will be available in surround sound and compatible to Dolby Digital. Customers may need to connect the digital audio output from the box directly to their home theatre system that has a Dolby digital box.

Can I get the OSN HD Box without subscribing to the High-Definition channels?

It will not be possible as the OSN HD Box is bundled with the High-Definition channels.

Which HD resolution is OSN HD broadcasting: 720p or 1080i?

High-Definition TV programmes are currently being produced in 720p and 1080i, depending on which one the programmes producers decide is best for their show. We will be broadcasting OSN HD High-Definition channels in 1080i, which is in line with international industry standards.


What is High-Definition?

High-Definition Television (HDTV) is the latest in a long line of major improvements in television technology, which has moved from black-and-white analogue to widescreen colour digital over the last 50 years. It offers you details and resolution like never before. To be precise, you will experience twice the resolution and five times greater detail, sharpness and clarity than standard definition television. You will also experience cinematic surround sound and vibrant colours.

What is the difference between HDTV and SDTV?

HDTV produces a far more superior picture quality. It also gives a cinematic surround sound effect with the Dolby Digital technology.

What are the key features of High Definition TV?

Wide screen movie viewing (16:9 aspect ratio)
All flat panel televisions have an aspect ratio of 16:9. Standard definition television usually broadcast only in 4:3 aspect ratio. This means that the picture is usually stretched or distorted on modern televisions. High-Definition television on the other hand, broadcasts images in a native 16:9 aspect ratio, enabling you to enjoy panoramic widescreen viewing that most closely emulates the human field of vision.

Crisp and Crystal Clear Images
The sharpness of your television image, or its screen resolution, is measured by the number of horizontal lines and vertical lines displayed on the TV screen. The more lines and the higher resolution, the sharper the images are on your TV screen. High-Definition-ready TV set offers at least twice the resolution and 5 times greater detail, sharpness and clarity than the standard TV.

True-to-life Colour
HDTV displays lifelike images with greater true to life colours.

Cinematic Sound (Dolby Digital audio)
HDTV has the capability to deliver high quality audio via Dolby Digital audio surround sound. Properly decoded, each audio track can be isolated to individual speakers around your TV viewing area to recreate the multi-dimensional audio experience you get in the cinema, right in your living room.

I see two different types of High-Definition television sets at the retailers. Some have the label HD-Ready and some have Full HD; which one should I buy?

Both HD-Ready television and Full HD television are capable of displaying standard definition and high definition broadcast. You should buy a television set that meets your budget requirement.

Why are there 3 different formats - 720p, 1080i and 1080p?

The numbers represent the amount of scan lines in your TV; the more the lines, the better your image looks.

720p means there are 720 lines of pixels. The "p" stands for progressive scanning, a technique that scans and displays all of the lines in one frame.

1080i means 1080 lines are used, but "i" stands for interlaced scanning, where half the lines are displayed in one frame and the other half in the frame that follows.

1080p means 1080 lines are used to create your TV picture. The format is currently being used to produce Blu-Ray discs but not TV broadcasts.

What should I look out for when buying a HD TV?

The format, aspect ratio and contrast ratio. Your new High-Definition TV should at least be able to support the 720p format and an aspect ratio of 16:9 to avoid pillar/letter boxes getting in the way of your viewing experience. It should also have a contrast ratio of at least 10,000:1. And if you have other entertainment systems, like a stereo or gaming console, you should consider a TV with multiple HDMI ports.

Does my TV screen size matter?

Screen size does not drastically affect the visual quality of your High-Definition experience although a larger screen does give you a greater amount of detail.  As long as your television is High-Definition ready, your viewing experience will remain enjoyable regardless of screen size.

What is aspect ratio? And what are pillar/letter boxes?

Aspect ratio represents the width against the height of your TV screen. An aspect ratio of 16:9 represents a wide-screen display.

Pillar/letter boxes are the black bars seen when the aspect ratio of the TV does not match that of the broadcast signal. For instance, when you watch High-Definition content (16:9 ratio) in a TV display ratio of 4:3, you will experience black bars at the top and bottom of your screen, disrupting your viewing experience.

What equipment do I need to receive HD quality entertainment?

You will need a High-Definition television set and the new OSN HD Box which comes with a new smartcard, new remote control, outdoor unit dish, HDMI cable and of course, the High-Definition channels from OSN HD.


Appendix A – OSN Transponders on Nilesat

Network Id: 2048 (0x800)

Modulation type FREQ (MHz) Polarity (H/V) Symbol Rate (Baud) FEC Transport Stream ID
DVB-S (QPSK) 11862 Vertical 27500 3/4 2
DVB-S (QPSK) 11996 Horizontal 27500 3/4 3
DVB-S (QPSK) 12073 Horizontal 27500 3/4 4
DVB-S (QPSK) 11977 Vertical 27500 5/6 20
DVB-S (QPSK) 11373 Horizontal 27500 3/4 45
DVB-S (QPSK) 11411 Horizontal 27500 3/4 46
DVB-S2 (8PSK) 11278 Vertical 27500 2/3 47 (HD)
DVB-S2 (8PSK) 10834 Vertical 27500 2/3 116 (HD)


Appendix B – Accessories Recommendations

Dish Size for DTH customers:

As the EIRP of Atlantic Bird 4 (partially operated by Nilesat) in direction of UAE and Oman is low, it is recommended to use an offset dishes with a major axis of 110 cm.

Accessories for DTH installations:

Accessories Specifications Recommended Brand / Model
Unicable LNB Insertion loss 0.5 dB FTA Inverto, Zinwell
4 way IF Splitter in unicable DTH installations Insertion loss 3-4dB Triax, Ikusi
Isolation 25 dB type
Power pass One Port
DiSEqC Switch in DTH installations Insertion loss 2 dB Spaun SAR 411
Teledis RESCH SDS 411
Teledis HCS41.
Isolation 25 to 30dB
Current max 500mA
Coaxial Cable in DTH installations Type RG 6 Commscope, Televes, Skylink
Dielectric Foam
Conductor CCS
Braid 40% - 60%


Make Features HD zapper support
  • Length: 1.5 m
  • Diameter: Large
  • Ferrite core support for EMI reduction
Ching Tai
  • Length: 1.5 m
  • Diameter: Small
  • Length: 3 m
  • Diameter: Large
Intellex InfoTech Dealer
  • Length: 3 m
  • Flat
  • Length: 1.5 m
  • Diameter: Small
HDMI A/V selector switches
  • 4/1 selector
  • 5V adaptor
  • Switching time= ~4 seconds
Not working with LG LCD TV 26" model: LG26LF15R
  • 4/1 selector
  • With small remote & an extender
  • LED indictor on each input
  • Switching time= ~4 seconds
  • Auto input select when having single input & switches to last connected input
  • External power adaptor not used
Unbranded Chinese
  • 3/1 selector
  • LED indictor on each input
  • Switching time= 5~7 seconds
  • Auto input select when having single input & switches to last connected input
  • External power adaptor not used
  • 1/2 selector (1 input & 2 outputs)
  • 5V adaptor
Optical Cable (Toslink)
Global Super AV Not OK Not working in any STB
Philips OK Supported
4/1 DiSEqC Switches
Digital Telecom DiSEqC V2.0 Not supported
Topfield TP-41A DiSEqC V2.0 Supported
Eurostar ESD-41 DiSEqC V2.0 Supported
Spaun SAR-411F DiSEqC V2.0 Supported
Emitor AB DiSEqC V1.0 Supported
MX GD-41C DiSEqC V2.0 Supported

Accessories for MDU and distribution systems installations:

Coaxial Cables



Mains Powered Stand Alone Multiswitches




Global Communications




Cascadeable Multiswitch Ranges

Standard Range + Penta Tap Range

GII Range, XS Range, XS Plus Range

Districom 4000 Range + TMS Cascade Range

Switchmaster Range

Citicom Switch Range


Unicable cascadable Multiswitch Ranges

Unicable Switch Range