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Faqs

We own a building with 72 apartments.

Is it possible to distribute the satellite IF signal from 8 different dishes (each dish pointing to a separate satellite)?

We want the final IF signal to be a composition of all the signals from each LNB (and we want to distribute the signal using a single cable).

Is this possible?

 
Respuesta

The number of channels that can be distributed within the IF band by a single coaxial cable is limited.

The available bandwidth is from approx. 950 to 2200 MHz.

This means that a maximum of 31 transponders can be sent using a single coaxial cable.

You should select these transponders and then use IF to IF processors to accommodate them into the "cable".

How will the system work?

These units can select any satellite transponder and carry out a frequency conversion in order to put all of them in adjacent configurations from 950 to 2150 MHz.

The transponders can be either analogue or digital. please see the technical information about ref. 7231 on our website.

I have an audio/video transmitter ref. 7307.

Following the instructions on the leaflet, the system sends the video and audio but it does not send the remote control commands. Why?
Respuesta

Answer:
Please check which model you have:

 

  • The old model features two LEDs placed as indicated below. If this is your model, then we recommend the following position to send the infrared emissions to the receiver sensor.

  • The new model features one LED placed as indicated below: In the leaflet that you mention we recommend the same position to send the infrared emissions to the sensor of the receiver. However, this is an error.

     

    The arrangement of the LED in the new bubble is as follows:

    Therefore change the position of the IR emitter as follows:

What is a collinear antenna? What advantages does it have?

Respuesta

A collinear antenna is basically two antennas joined together.

Externally, it looks like a single antenna but in fact, it is two antennas on the same piece of equipment.

Collinear antennas have a higher gain than a simple antenna with the same size.

I have the Receiver 7255: I blocked some channels but I have now forgotten the password.

On page 63 of the English section of the User Manual, it says that when you forget the password you can select the factory default option.

When I tried the factory default option it still prompted me for a password.

I have tried all the available passwords from 0001 to 9999, unfortunately nothing works.

I think it is something to do with the software.

Respuesta

On page 41 of your Manual, as you can read below, there is a special code (1250) in case you forget your password.

  • "Once you have entered the correct password in the channel, there is no need to enter the password again, unless you switch the receiver off"
  • "The receiver disposes of a general password that will give you access to the parental lock menu if you have forgotten your personal password. this password is 1250"

Another option is to set the receiver again to the factory defaults, but you will lose your personal settings.

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Respuesta

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When orientating a dish towards a satellite, I used a Satfinder ref. 7301.

Even when the position of the satellite dish allows a maximum signal reading, some of the channels that I receive still transmit noise (sparklies).

Respuesta

First make sure that the size of your dish is adequate for the area where you are living.

You must also take into account that the dish adjustment does not only consist in setting up the elevation and azimuth parameters.

A very important parameter is the LNB skew.

This skew will help to discriminate between the polarities transmitted by the satellite.

In order to adjust the skew:

  • Tune a strong satellite channel using an individual receiver (i.e.: Eurosport in Astra or Eutelsat)
  • Change its original polarity parameter
  • Rotate the LNB until this channel is no longer received.

I need a cable to connect the Avant to the PC with a 9 pin D-Sub connector.

Can I use the cable used for the CDC (Control Module) as it has a 9 pin D-Sub?
Respuesta

You cannot use the same cable for both applications :

  • The CDC uses the serial port to communicate with the PC.
  • The Avant uses the parallel port.

In any case, the Avant cable has a bi-directional adapter for the data that is being transmitted to the PC either for writing or reading.

However, please note that:

  • The Avant uses a 25 pin male connector (for communications with the PC) not a 9-pin connector.
  • and the CDC uses the 9-pin connector.

How to make a mechanical optical fibre splice
Respuesta

1. Each time you use the tool, thoroughly clean both ends of the area where the mechanical splice is going to be placed. To do this, use a lint-free cloth moistened with isopropyl alcohol..
2. Pull the compression lever and fit the mechanical splice ref. 2328. By using the precision stripper ref. 2324, remove 30 or 40 mm of the fiber sheath, and clean the bare fiber with a lint-free cloth moistened with isopropyl alcohol.
3. Now cleave the resulting bare fiber with the cleaving tool ref. 2323 to leave a lenth between 12-13 mm (12.5 mm would be appropriate).
4. Insert the fiber into the splice (through the guide) until it stops.
5. Now enter the fiber within its clamping point (the padded area). To do this, press down the tab on the left and enter the fiber in the foam support that has been opened. Release the tab so that the foam support hold the fiber.
6. Repeat steps 1 through 4 for the second fiber (right side of the tool).
7. Next, enter the second fiber within its clamping point (the padded area). Begin by pushing the second fiber in the direction of the first fiber until you notice as the first fiber begins to curve. For the second fiber can slide, you must have pressed the right tab, so that the foam support cannot hold its sliding.		  

8. At this point, you must press the tab on the left side and push the first fiber towards the second, so that the curvature of the two fibers is as close as possible. 9. Press down the compression lever to activate the mechanical splicing.
10. Press the tabs left and right to elease the fiber on both sides of the splice made. Then remove the mechanical splice ref.2328 pulling from the center.
Finally, it would remain to check the splicing with real signal, which is an intrinsic checking of the Fusion Splicer by arc ref. 2321.

  

Regarding mechanical splicers there is no other way for checking the splice that wait until the line is finished.
To do this, make use of both a triple light generator (ref. 2340) and a H45 Meter with optical interface.
The great drawback of this process is that, if there are several splices in series, there is no possibility of identifying that splicing is causing the failure; a heavy more reason to opt for the use of the fusion splicer by arc.

 

Using a multitester, the Vdc output voltage of the PSU, ref. 9386, seems to be 24V instead of 18V. Can this voltage harm the LNB?

 
Respuesta

The power supply unit, ref. 9386 does indeed generate 24V, but when it has been loaded, it generates 18V.

To verify this, you can insert a splitter with a DC bypass in its outputs between the PSU and the LNB (such as ref. 7304).

Now measure the voltage in its free output with a tester.

How can I detect an EEPROM failure in a SAT 100 or STAR unit?
Respuesta

To be able to detect if a sound failure has been produced by the EEPROM memory (ic8 - pcx8582), use the portable programming unit and follow these steps:

  • Take any SAT100 or STAR unit that you are sure works correctly.
  • Plug the programming unit into the SAT100 or STAR unit.
  • Select the audio menu:

    because of the software, the audio frequency range is limited from 5 to 8 MHz.

If you are able to go either below or above these limits, it means that the IC8 EEPROM is not functioning correctly and must be replaced.

  • To remove the IC8 from the PC board you do not need a special de-soldering tool, simply proceed as indicated below:
    • Work first on one side of the IC8 and then on the other side.
    • Solder the three pins of each side of the chip together (see figures).
    • Then, by keeping the soldering in the tin melted, you should be able to remove the three pins at the same time from the PCB.
    • Next, proceed in the same way with the other side of the chip.
    • Finally, clean the excessive soldering tin from each track of each pin on the PCB (see picture)

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