Diseqc Question

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iBoston

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Jul 15, 2014
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Can you hook up two dishes with two different motors behind a 2x1 diseqc switch? Will the receiver switch before it gives the motor command??
 
School of Hard Knocks sophomore here.

You will probably burn the switch up if you put it between the STB and the motors.
I would use an Ecoda 22khz switch instead.
 
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If you must place a switch in front of two KU hh motors, use a high quality 22KHz switch like an Ecoda.

DiSEqC switches are much more delicate and often cannot survive teh frequent port changes with the increased current demands of a motor.
 
I was just curious... I actually am going to have two different systems independent of each other. So, then i take it, that it sends the diseqc change before sending the motor command so it doesn't try and move both motors??

What should i expect to pay for a Edoda switch?
 
Are you planning on two receivers and two motors? And you want both receivers to be able to access both KU dishes? If so, your equipment list needs change.

Yea, i was wondering if i could use a 22kw switch to force signal of second smaller dish between two receivers..
The secondary system is a 1 meter dish with a Titanium PLL lnb and i have a diseqc switch 2x1. I do not yet have a 22kz switch.
 
Connecting two receivers to even one motorized dish can create nightmares! Imagine on a two STB and two motorized dish system... recording on STB1 when someone (or you) uses STB2 for that motor to go to another satellite... This system would be mighty complicated and require coordination if several people are using it or you like to DVR.

Probably the only sensible way to share two KU HH motorized dishes with two receivers (that would be used at the same time) is to use a powered 22KHz multi-switch (2x4 minimum, DiSEqC signal passing) with two dual output standard type (LO 10750) LNBFs. The motors should be connected to the horizontal inputs of the switch to provide fastest movement and most power. Motor #1 would be hooked-up to Horizontal input for dish #1 and looped out to LNBF #1, port #1. Motor #2 would be hooked-up to Horizontal input for dish #2 and looped out to LNBF #2, port #1. The Multi-switch Vertical input for dish #1 would be connected to LNBF #1, port #2. The Multi-switch Vertical input for dish #2 would be connected to LNBF #2, port #2,

The receivers would connect to the multi-switch output.
The multi-switch would receive it's power from a external power supply (usually powered through a separate coax cable).
Both receivers would need two satellite positions saved for each satellite. I.E. 99w Dish 1 and 99W Dish 2
Both receivers should assign and use the same DiSEqC 1.2 motor assignments for each satellite position.

To use the system:
STB #1 would have priority for motor 1 and only use the satellites "Dish 1" if STB #2 was in use.
STB #2 would have priority for motor 2 and only use the satellites "Dish 2" if STB #1 was in use.

If an STB is not in use, it should be powered down. Some STBs reissue commands if signals are lost to try and reestablish a signal path or position a dish. Most STBs issue switch and motor commands when brought out of standby to establish a signal path or position a dish. Some STBs allow the sequence of 22KHz/DiSEqC commands to be set to user preference and number of times repeated to trigger switch paths and issue motor positioning commands in the correct sequence to establish a signal path to cascading devices.
 
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Motor #1 would be hooked-up to Horizontal input for dish #1 and looped out to LNBF #1, port #1. Motor #2 would be hooked-up to Horizontal input for dish #2 and looped out to LNBF #2, port #1. The Multi-switch Vertical input for dish #1 would be connected to LNBF #1, port #2. The Multi-switch Vertical input for dish #2 would be connected to LNBF #2, port #2,

What makes it Horizontal/Veritcal? By chance, is there a website that shows diagrams of such a setup or similar setups?
 
LNBF polarity is controlled by voltage. 18Vdc = Horizontal / 13Vdc = Vertical

Don't know where there is a diagram of this, as it is not normally done. :D

I understand how that relates with the LNB, but you made it seem like the H/V was a part of the diseqc, and that is what i don't understand.
 
Place the motor on the leg that carries the most voltage. The motor will move faster with the higher voltage.

BTW... DiSEqC/22KHZ control signals travel further and are higher amplitude when transported on the higher voltage! :D
 
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Place the motor on the leg that carries the most voltage. The motor will move faster with the higher voltage.

BTW... DiSEqC/22KHZ control signals travel further and are higher amplitude when transported on the higher voltage! :D


Okay, last point of confusion. I didn't think you had control of voltage. I thought it is just triggered by the current channel you are on as to whether its a V/H... So, how do you control that?
 
Correct, a channel (or in the menus, a transponder) selects the voltage automatically outputted by the receiver in the default mode.

On a multi-switch connected to a dual output LNBF, one port label H-18v is fixed to horizontal polarity (18Vdc) by the switch and the other port labeled V-13v is fixed to vertical (13Vdc). The switch provides constant fixed voltage to each LNB port. The switch then selects between dish #1(22KHz tone_OFF) Vertical or Horizontal and dish #2 (22KHz-ON) Vertical or Horizontal.
 
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Correct, a channel (or in the menus, a transponder) selects the voltage automatically outputted by the receiver in the default mode.

On a multi-switch connected to a dual output LNBF, one port label H-18v is fixed to horizontal polarity (18Vdc) by the switch and the other port labeled V-13v is fixed to vertical (13Vdc). The switch provides constant fixed voltage to each LNB port. The switch then selects between dish #1(22KHz tone_OFF) Vertical or Horizontal and dish #2 (22KHz-ON) Vertical or Horizontal.

Might you have a link or sell this switch you would be referring too?
 
Now instead of feeding you a salmon dinner, I will teach you to fish. :D

Google some of the terms we have discussed:
MultiSwitch, External Power, 22KHz, 4x2 (or also 5x2), Satellite, LNBF

This switch should be top of list:
5x2 S-4120-GX
Eagle Aspen Multi Switch


Probably a good switch candidate. Maybe someone might comment if it passes 22KHz/DiSEqC signals through the satellite ports at all times. I'm thinking that it does, but can't speak from experience.
 
Now instead of feeding you a salmon dinner, I will teach you to fish. :D

Google some of the terms we have discussed:
MultiSwitch, External Power, 22KHz, 4x2 (or also 5x2), Satellite, LNBF

This switch should be top of list:
5x2 S-4120-GX
Eagle Aspen Multi Switch


Probably a good switch candidate. Maybe someone might comment if it passes 22KHz/DiSEqC signals through the satellite ports at all times. I'm thinking that it does, but can't speak from experience.


Okie Dokie, but i do love Salmon!!!!! :oldsmile
 
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The Multi-switch Vertical input for dish #1 would be connected to LNBF #1, port #2. The Multi-switch Vertical input for dish #2 would be connected to LNBF #2, port #2,

Okay, this is coming together in my head... But...... You said the LNB's for both dishes are connected to the vertical inputs respectively. Does that lock those LNB's into vertical mode not allowing any horizontal signals being it seems to me it would be locked at the lower voltage???? :enjoying
 
These are dual (2) output LNBFs. 1 port locked to vertical the other port locked to horizontal.

To support two receivers with with simultaneous horizontal and vertical polarities the a LNBF must be dual output or bandstacked type.
 
These are dual (2) output LNBFs. 1 port locked to vertical the other port locked to horizontal.

To support two receivers with with simultaneous horizontal and vertical polarities the a LNBF must be dual output or bandstacked type.

Okay... I think im there.... Picture right?

multiple receiver.jpg
 
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