johbru
Registered: 10/02/07
Posts: 1,583
|
|
Posted 04/10/12
|
Reply with quote
#31
|
|
Yes. DC is not going to be attenuated unless the splitter fails which is pretty remote. You did say you have analog C so the LNB is getting DC. The AZ has a better tuner than my Q. If both AZ's are acting the same, perhaps one on the C splitter and the other on the Ku will give a clue. What is the brand and model of the switches?
__________________
9.5', DSR922, Traxis 3500, QualiTV 1080IR, TT3200, 44.3 N, 123.3 W Rule of Acquisition 59: Free advice is seldom cheap.
|
|
Loading...
|
|
Skip
Registered: 08/20/10
Posts: 226
|
|
Posted 04/10/12
|
Reply with quote
#32
|
|
|
Johbru, Do I have a second bad splitter on the C band. I replaced a suspect one with another spare and so the spare was bad. I received 18 volts on 2 of the 3 "out". I traced the bad one going right into Diseq switch for my AZ. Does anyone agree with this assessment or is it a bad DiseQ? I really have a problem how power goes throughout the system. I have no spare DiseQ so I have swapped with the Ku side and scanning W7 now.
Attached Images
__________________
VietNam 1966-67 101st Airborne
1968 82nd Airborne
Since then life has been gravy ever since.
|
|
Loading...
|
|
Skip
Registered: 08/20/10
Posts: 226
|
|
Posted 04/10/12
|
Reply with quote
#33
|
|
|
Splitters are Perfect Vision Diseq are DMS International
__________________
VietNam 1966-67 101st Airborne
1968 82nd Airborne
Since then life has been gravy ever since.
|
|
Loading...
|
|
wejones
Registered: 01/10/08
Posts: 2,910
|
|
Posted 04/10/12
|
Reply with quote
#34
|
|
I think this whole thread has gotten very confused. On looking at the hand drawn diagram above that shows where things are connected, I think it is clear to me that things just aren't connected to the right places, not that there is any bad component. I tried to explain with words before what I think the connections should be, and I tried to draw a hand drawn diagram, but it was ugly, so I had my wife construct a diagram with powerpoint.
Below is what I have done in the past, and it WORKS. Of course I was using a Drake analog instead of the 920, and I had 2 different DVB receivers slaved, but that isn't important.
Anyway, the diagram is here:
![]()
? image isn't showing up for some reason, so I'll attach it too.
Attached Images
|
|
Loading...
|
|
wejones
Registered: 01/10/08
Posts: 2,910
|
|
Posted 04/10/12
|
Reply with quote
#35
|
|
Quote: Originally Posted by johbru
... As I said before, I avoid diseqc switches. With only two satellite ports, I suspect they may be 22 KHz. Diseqc 1.0 selects one of four LNB's. Clearly, you have a bad component, ....
I've owned a few diseqC switches which are only 2x1. Not all diseqC switches are 4x1. In fact the best one I've ever used was a 2x1.
There are actually 2 kinds of 2x1 diseqC switch, one is a regular full diseqC, and the other is a short diseqC command called something like a signal burst switch or something similar to that. This is very similar to a 22KHz switch but it is really just a very simple diseqC command, and you don't need the signal constantly on, as the switch remains set after the signal is gone.
It used to be that the tone burst diseqC switches used "A" and "B" for the ports, while the full diseqC switches used "1" and "2" {and 3,4 if you have a 4 port} for the ports. Some receivers have separate A,B and 1,2,3,4 settings, and some combine them. I think I found that my switch would work whether you used A/B or 1/2.
Anyway, I haven't seen these tone burst switches for sale for quite a while, and even the two port diseqC switches are harder to find, but they are still available. I think the tone burst switch I had was MUCH more reliable than regular diseqC switches, however I still prefer diseqC to ANY 22KHz switch I've owned. I've never gotten a 22KHz switch to work right. (I realize that most people have the opposite experience, so I must have just gotten lemons.)
|
|
Loading...
|
|
johbru
Registered: 10/02/07
Posts: 1,583
|
|
Posted 04/10/12
|
Reply with quote
#36
|
|
|
Influencing my comment was the 20 years this system has been in operation. The first experiences commented were "get a 0/12 switch", "use a manual switch", or some other criticism of the audio tone switches. Diseqc is a coded 22 KHz signal but I imagine they have reduced the losses and other foibles. We are not helping Skip much with history lessons. Consider this:
920 C >> AZ IF LOOP THROUGH AZ Input >> C-Band LNB 920 Ku >> Other AZ IF LOOP THROUGH AZ Input >> Ku-Band LNB
This will make certain of the cables and receivers. If it functions as Skip wants, then add the splitters instead of using the IF LOOP THROUGH ports. Finally, one at a time add switches.
__________________
9.5', DSR922, Traxis 3500, QualiTV 1080IR, TT3200, 44.3 N, 123.3 W Rule of Acquisition 59: Free advice is seldom cheap.
|
|
Loading...
|
|
virginiap20007
Registered: 10/18/10
Posts: 465
|
|
Posted 04/10/12
|
Reply with quote
#37
|
|
|
I have a question: Is Cband not working at all, or is it just AMC-7 [w7] ? Question 2: Why use a sw for each AZ box? Why not just loop them . I have 4 boxes looped with each box to a different port on the TV. A possible solution: use the back on/off sw on the AZ and let it re-boot. As long as you have the splitters and sw's conected as pictured in wejones post it should work, but if it was me I would use 1 sw and loop the AZ's.
__________________
9ft.button hook mesh HtoH mount; 4dtv922 C/KU feed horn w/ slaved AZ prem, looped pan2500,9500, and a CW3000 at the end [need to change F/W]. Got a philips suround sound in there and SONY BRAVIA TV
|
|
Loading...
|
|
Skip
Registered: 08/20/10
Posts: 226
|
|
Posted 04/10/12
|
Reply with quote
#38
|
|
|
Status I cut the lawn for 3 hours and took my bride to lunch. My head is clear. I printed the provided wiring diagram (thanks Wejones) Took every thing apart and reassembled per diagram. Took a break and performed a recheck of diagram. G16 Shepherd's Chapel 62% on my 920. Scanned C BAND in and all that was displayed was 3 channels displayed as: RCSMAP Table Ox3C I went to the Ku ABC news feeds and now they are gone.
__________________
VietNam 1966-67 101st Airborne
1968 82nd Airborne
Since then life has been gravy ever since.
|
|
Loading...
|
|
johbru
Registered: 10/02/07
Posts: 1,583
|
|
Posted 04/10/12
|
Reply with quote
#39
|
|
Did you change to odd TP before scanning? On my Q, the caribbean mux is about the same strength as W7 RTN. The shepard's channel is 88 to 90 on my 922. I don't know if 920 uses the same scale. You may have too little signal but that will mean replacing cables since you already replaced the LNB. How many components were in when you got the 62%?
__________________
9.5', DSR922, Traxis 3500, QualiTV 1080IR, TT3200, 44.3 N, 123.3 W Rule of Acquisition 59: Free advice is seldom cheap.
|
|
Loading...
|
|
virginiap20007
Registered: 10/18/10
Posts: 465
|
|
Posted 04/10/12
|
Reply with quote
#40
|
|
|
Yes "odd" on g-16 is hor. but on other sats "even" is hor. Check your ant set up menu in the 920 and make sure you dont have it set as; "90 deg. rotated" Sounds like you scanned the vert side instead of the hor. Make sure your polorotor on the feed horn is ok, it may be out or stuck.
__________________
9ft.button hook mesh HtoH mount; 4dtv922 C/KU feed horn w/ slaved AZ prem, looped pan2500,9500, and a CW3000 at the end [need to change F/W]. Got a philips suround sound in there and SONY BRAVIA TV
|
|
Loading...
|
|
Skip
Registered: 08/20/10
Posts: 226
|
|
Posted 04/11/12
|
Reply with quote
#41
|
|
|
To All, Sorry to steer you wrong but I disposed of my Q long ago. Some times I think my servo is acting up but I should be able to pull something in. I ordered one from Rick. 920 antenna is set as standard. I never touch these specialized menus. I'm having $10K of window replacement to day but I'll check in from time to time.
__________________
VietNam 1966-67 101st Airborne
1968 82nd Airborne
Since then life has been gravy ever since.
|
|
Loading...
|
|
Skip
Registered: 08/20/10
Posts: 226
|
|
Posted 04/11/12
|
Reply with quote
#42
|
|
|
I must have a bad splitter or DiSRqC switch. I pulled all those foreign channels located on G19. I scanned in C band but all those channels are Ku. I looked at the AZ box channel selection and the Ku channels have frequencies listed as C band. 3819 and 3908. See message #5 as they appears to be the same results. This is the same results with my original setup and before I dissembled all components and reassembled per WeJones new wiring diagram. What do you think?????
__________________
VietNam 1966-67 101st Airborne
1968 82nd Airborne
Since then life has been gravy ever since.
|
|
Loading...
|
|
wejones
Registered: 01/10/08
Posts: 2,910
|
|
Posted 04/11/12
|
Reply with quote
#43
|
|
Quote: Originally Posted by SkipI must have a bad splitter or DiSRqC switch. I pulled all those foreign channels located on G19. I scanned in C band but all those channels are Ku. I looked at the AZ box channel selection and the Ku channels have frequencies listed as C band. 3819 and 3908. See message #5 as they appears to be the same results. This is the same results with my original setup and before I dissembled all components and reassembled per WeJones new wiring diagram. What do you think?????
Receiving ku while trying to tune C band does sound like a diseqC switch issue or perhaps your settings on the Azbox, however it's also possible that the diseqC signals from one Azbox are making it through the splitter back to the diseqC switch on the other azbox, confusing that switch. It may be worth a try to completely disconnect or turn off one Azbox while trying with the other, just to see if somehow they are interferring with each other. Ie one may be sending signals to do Ku while the other is trying to select C band. Also, I'm assuming that the 920 powers both C and Ku ports regardless of which it is set on. All the analog receivers I've used would, but I've never used a 920.
Also, some switches tend to leak signals from one input over to the other inputs. One of the 22KHz switches I've owned wouldn't work on one band, because it was overwhelmed by leakage from the othe band. I've not seen that on any of my diseqC switches, but I've heard other people complain about this, so it's probably an issue with some brands of switches, and not with others.
On another topic, it's not likely that the splitter is bad, however it is possible. I do have one of my splitters that is defective, and doesn't block DC properly. I think some splitters use diodes and some use capacitors, and sometimes the diodes fail.
|
|
Loading...
|
|
Anony55
Registered: 08/28/08
Posts: 849
|
|
Posted 04/11/12
|
Reply with quote
#44
|
|
Maybe try new DiSEqC switches with better port isolation. In fact, as cheap as they are, maybe replace the (one port) power-pass splitters too.
If you're hooked up like wejones' diagram now, you shouldn't have any problems if your switches & splitters are good.
I ran into C/Ku bleed over a few years back using the little cheapo DiSEqC switches that come with some of the receivers. It can be very puzzling until you figure out what's happening.
Luckily for me, I posted something here at that time and ACRadio recognized my problem. I changed to better switches & never had the problem again.
Cheers
__________________
526964656D2720436F77626F797321
Tobacco free since 10/18/2012
*** QuiBids is a SCAM !!! ***
*** West Bay Acquisitions/Hollywood Video fees are a SCAM !!! ***
|
|
Loading...
|
|
Skip
Registered: 08/20/10
Posts: 226
|
|
Posted 04/11/12
|
Reply with quote
#45
|
|
|
Anony55, I went from a DiSEqC 4*1 to a 2*1 but no change in situation. I have not found a dealer in Maryland that sells any switches or splitters or any satellite parts. I rely solely on Rick from parts. Everything but the dish is from Rick so I know the are the best. WeJones, I disconnect one AZ but that didn't solve my problem. I also separated hardware as far as possible to prevent leakage.
__________________
VietNam 1966-67 101st Airborne
1968 82nd Airborne
Since then life has been gravy ever since.
|
|
Loading...
|
|
