The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

   
Topic Options
Rate This Topic
#213461 - 05/06/14 07:01 PM Direct TV testing work arounds?
sparkyinak Offline
Member
Registered: 07/08/07
Posts: 1309
Loc: Alaska
I may get bashed for this and understandably so. Is there any "tricks of the trade" for testing the dish cables without the specialize testing equipment? I only ask because the system in at a remote site and rather expensive to send a specialist out there if it turns out to be simple fix. At the moment, I'm not sure what the issue even is


Edited by sparkyinak (05/06/14 07:16 PM)
_________________________
"Live Awesome!" - Kevin Carosa
Top
Study Guides for VDV / Structured Cabling Installers
#213462 - 05/07/14 03:37 PM Re: Direct TV testing work arounds? [Re: sparkyinak]
ghost307 Offline
Member
Registered: 05/09/05
Posts: 897
Loc: Chicago Illinois USA
Depending on how much the service call is and how much a new cable would cost; I would run a new cable on the ground and through a window to see if it works. If so, you've found the problem. If not, you've saved the embarrassment of paying for a service call only to find out that it was a bad cable.
_________________________
Ghost307
Top
#213463 - 05/07/14 08:12 PM Re: Direct TV testing work arounds? [Re: sparkyinak]
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9066
Loc: Estero,Fl,usa
I just had a problem with a 75 ohm coax (or something at the end). I started by checking for a short (shield to stinger) with both ends disconnected. Then I plugged a terminator on one end and looked for the ~75 ohms at the other.
As a sanity check I plugged it into the AV video jack of the TV with an RCA adapter and hooked a camera to the other end. That proved the cable was good to me.

My problem turned out to be on the driven end, verified by dragging a monitor there and hooking it up with another short cable.
_________________________
Greg Fretwell
Top
#213464 - 05/08/14 05:30 PM Re: Direct TV testing work arounds? [Re: sparkyinak]
JoeTestingEngr Offline
Member
Registered: 11/04/05
Posts: 786
Loc: Chicago, Il.
Well, you could ask someone to go out to the LNB with a DMM. They should read roughly 12 or 18VDC on the RG-6, depending on the polarization. Both voltages are OK to power the Low Noise Block down converter and the voltage difference is sensed to select CW or CCW polarization. There's obviously a ton more frequency division multiplexed stuff on that cable, but the DC is easy to look for. If they see the DC there, they might have a 2nd LNB connector they can try. I think most of the dishes have dual feeds. I imagine you already checked: Menu/Setup/System Setup/Satellite/View Signal Strength, for each transponder.
Joe
Top
#213470 - 05/13/14 01:49 AM Re: Direct TV testing work arounds? [Re: sparkyinak]
dougwells Offline


Member
Registered: 05/03/03
Posts: 1231
Loc: kamloops BC Canada
How many receivers are on the system, just asking in case this is like a work camp setup.

send me a FB message if you have more questions.
Top
#213485 - 05/22/14 06:35 PM Re: Direct TV testing work arounds? [Re: sparkyinak]
JoeTestingEngr Offline
Member
Registered: 11/04/05
Posts: 786
Loc: Chicago, Il.
So what happened?
Top
#213488 - 05/23/14 01:35 AM Re: Direct TV testing work arounds? [Re: JoeTestingEngr]
sparkyinak Offline
Member
Registered: 07/08/07
Posts: 1309
Loc: Alaska
I didn't make it out there but I fwd the info. They reported back the part the reflector bounces the signal off of was defective
_________________________
"Live Awesome!" - Kevin Carosa
Top

Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box

Recent Posts
Forum Styles
by Admin
Today at 02:08 AM
License exam
by TRUE POWER
Yesterday at 09:16 PM
Looking for older post
by sparkyinak
Yesterday at 12:27 AM
Members: Non-Members: Did you know?
by Admin
01/22/17 02:34 PM
Safety at heights?
by HotLine1
01/21/17 08:51 PM

Who's Online
0 registered (), 79 Guests and 12 Spiders online.
Key: Admin, Global Mod, Mod
New in the Gallery:
Desk-mounted "power-board"
Top Posters
gfretwell 9066
Trumpy 8560
pauluk 7693
HotLine1 6833
sparky 5545
Member Spotlight
Member Since: 11/11/05
Posts: 190

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals