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- 11-17-2009 04:58 PM #1
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Two DVB-S cards one motor how to let the other card to move the motor?
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Hi guys this is my design

So now back to my question DVB-S Card C is the only one able to move the motor, so is there a way to let the DVB-S Card L to tell the other card to move the motor?
- 11-17-2009 04:58 PM # ADS
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- 11-17-2009 06:05 PM #2
That's a strange design !

I don't see the reason for having both circular ports on one 22khz or Diseqc Switch, and both Linear ports on the other. Usually, each switch gets a circular and linear port. Hopefully, there is no way to move the motor from the 2d card, you wouldn't like the results, I suspect. If those are 22khz switches , though, I've seen the diseqc commands for the motor go right thru the lnbf and cause the motor to oscillate between two different positions.
You're better off not trying to control the motor from two different cards.
-Brent
1.0M Ku dish/DG-380/ -Quad linear lnbf, Solomend 800 PVR (7/31/2011 Software).
6 ft BUD /Dual Orthomode feedhorn, Manhattan RS-1933,version 3.8 software .
CS8000, Skywalker-1( s/n #21), Profs 7500, hanging from various cables from WNC 4x8 powered switch-
- 11-18-2009 07:27 AM #3
Anole contributed a lot on switch diagrams in Switch setups simplified thread. Pendragon touched various aspects of controlling multiple dishes and LNBs in a more elaborate way to account for strong and weak points of signal reception and equipment control via multiple Sat Cards and Receivers in Sat System Structure Optimization thread and others. I would be really interested to hear from these guys on this typical for multiple sat card owners question.
- 11-18-2009 10:18 AM #4
SatelliteGuys Regular
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In my case the reason why is because the DVB-S Card C can tune :
Turbo-coded QPSK
Turbo-coded 8PSK
Turbo-coded 16QAM
Digicipher II Combo
Digicipher II Split (I/Q)
Digicipher II Offset QPSK
and the DVB-S Card L can tune DVB-S2 (the other card can't tune DVB-S2)
So that's why I need this crazy diagram.
- 11-18-2009 08:00 PM #5
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This is the diagram from one of my posts that should do what you want. You can skip the 4x1 switches because your LNB will suffice. You'll have to do a search if you want some words
- 11-18-2009 09:25 PM #6
Look through Two receivers - one motor: possible? thread. Its a bit hard to find, but useful for dual card holders. Better yet, look through the above linked Optimization thread to get a sense of real FTA heat.
Try to put one receiver in Standby and control the motor by another one, then vice versa, and tell us, what Viewer packages did you use, and how it went.
And this Hookup & Motor Control thread gives links to the opposite task: control 2 motors from one receiver. What you probably want though, is to ideally be able to control the motor from any of 2 receivers without putting another receiver in Standby. That configuration may be possible with a band stacked LNBF, but someone should chime in with a proper schematics, if neither of your cards has a Loop Through port. However, none of known band stack LNBF models can replace Invacom QPH-031 in versatility.Last edited by zamar23; 11-18-2009 at 09:47 PM.
- 11-18-2009 11:25 PM #7
- 11-18-2009 11:32 PM #8
Are there Circular polarity transponders that are doing Digicipher II?
- 11-19-2009 06:57 AM #9
If only the skywalker did DVB-S2 .

Believe us, you really should have one linear port and one circular port on each switch, so that both cards can see all the available signals. Before I bought the AZbox, that's my config for a HDTC-PC, a skywalker-1 and a TT-3200 , so I could see all the streams, with motor driven by Merc II.
-Brent
1.0M Ku dish/DG-380/ -Quad linear lnbf, Solomend 800 PVR (7/31/2011 Software).
6 ft BUD /Dual Orthomode feedhorn, Manhattan RS-1933,version 3.8 software .
CS8000, Skywalker-1( s/n #21), Profs 7500, hanging from various cables from WNC 4x8 powered switch-
- 11-19-2009 07:51 AM #10
And that's another good option: hook up a $20 Coolsat STB to control the motor, and connect your both cards to the Invacom LNBF like the guys suggested above. Ideally you wouldn't want high current consumed by the motor when turning a heavy dish flowing through your card, motherboard and PC power supply. Some people also power connected LNBFs and switches from other sources than PC sat cards, so the cards don't pass through high current, are not subject to voltage fluctuations affecting signal locking, and dedicated only to sat. signal tuning and demodulation. But for a budget HTPC system a simplified setup like yours will do, if a bit corrected.

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