User Manual:Setting up DVB-S for satellite
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This page is up-to-date to MythTV version 0.21
In this chapter will be explained how to configure your DVB-S (Satellite) capture devices. To best way is to show this by example. Here we will be using the Technotrend Budget S-1500, but this guide should work for DVB-S cards.
The Technotrend Budget S-1500 is a DVB-S capturecard with the possibility of adding a optional CI module. A CI-module gives you the possibility to add a Cam module so you can view encrypted channels (pay-tv). This is optional for most DVB cards and does not change any of the following configuration steps.
In most distributions this (and other) capture cards work "out-of-the-box", adjustments are not necessary. If your devices is not support by default then find out how to get drivers for it.
To check if your capture device is working you see the following during boot or by using the dmesg command from the terminal, the output should see:
saa7146 (0): dma buffer size 192512 DVB: registering new adapter (TT-Budget/S-1500 PCI). adapter MAC has addr = 00:11:22:33:44:55 Input: Budget-CI dvb ir receiver saa7146 (0) as / class/input/input0 budget_ci: CI interface initialised registering frontend 0 (ST STV0299 DVB-S) ...
The card is now ready for use.
Start mythtv-setup as root, and select option 2. Capture cards. Choose "(New capture card). Fill the configuration as follows:
- Card Type: DVB DTV capture card (v3.x)
- DVB Card Number: 0 (if this is your first DVB card. The number corresponds with what at the end of the dmesg output is displayed: "registering frontend 0".)
- By filling out the card, you'll see that "Frontend ID" and "Subtype" automatically filled.
- The timeouts can remain on their default values.
Now screen should now look somewhat like the screen below (this may vary depending your version and look).
<Todo: add capture card setup screen here>
If you use a DVB-S capture device, you have to set the right settings for DiSEqC.
- Click on DiSEqC in the configuration of the capture card.
- If nothing had yet been configured, you will see "(Unconnected)" on top of the screen. Select this to make adjustments.
Unfortunately, in the current version of MythTV there is still no way to alter a DiSEqC connection once it is established. If you still would like to do, you must remove the capture card and add back... in mythTV not the hardware stupid ;).
If you click "(Unconnected)", you'll get a small list of choices:
<Todo: add example screen here>
Choose the device with which this capture device is linked.
Choose Switch, if you capturecard with a DiSEqC switch connected so you can select multiple LNB's.
<Todo: add example screen here>
- Description: A recognizable description for this switch.
- Repeat count: The number of times a command is repeated (for unreliable switches).
- Switch Type: The type of switch, usually DiSEqC (Valid choices are: Tone, DiSEqC, Legacy SW21, SW42 Legacy and Legacy SW64).
- Number of ports: The number of ports on the switch. Depending on the switchtype it's possible you can not change this (e.g. Tone is always 2 ports).
Once the institutions of the switch are known, you get the next screen. Here you can choose for each switchport what really is connected, this usually is an LNB.
<Todo: example screen here>
Choose Rotor, if you capturecard is connected to a rotating dish.
<Todo: example screen here: Rotor Configuration>
- Description: Add a recognizable description of the rotor here.
- Rotor type: Add what type of rotor you will use. Valid choices are: "DiSEqC 1.2" and "DiSEqC 1.3 (GotoX / USALS)". By the first you can configure the "Posistions".
- Also you must enter some data specific to your rotor and location.
If you're done with the configuration of the DiSEqC rotor, then you get the next screen, where you can choose what is connected with your rotor. Again, this will usually be an LNB.
DiSEqC 1.2 positions
If you choose for "Positions" with rotor type "DiSEqC 1.2", then you get the next screen where you can configure a positionnumber for each "Orbital Position".
<Todo: add more information here about the use of this> <Todo: example screen "rotor position map" here>
Choose for LNB, if you capture device is directly connected with an LNB.
- Description: This should be a recognisable description for this LNB (e.g. "Astra 19.2")
- LNB preset: "Universal (Europe)" is ually the right choice if you live in europ, but depends on the type of LNB. Consult the documentation of your LNB if Universal does not work.