ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
Question on power to 4 Nema 6-50 & 5 Nema 5-15.
by TrickedoutTech. 10/22/17 11:36 PM
VFD MotorFeeders
by Yoopersup. 10/22/17 07:52 PM
Generator Cable Sizing
by brsele. 10/18/17 07:39 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,458 Are you busy
177,448 Re: Forum
169,026 Need opinion
Who's Online Now
0 registered members (), 31 guests, and 13 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#213461 - 05/06/14 10:01 PM Direct TV testing work arounds?  
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,327
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

Last edited by sparkyinak; 05/06/14 10:16 PM.

"Live Awesome!" - Kevin Carosa

Study Guides for VDV / Structured Cabling Installers

Voice, Data, Video, (VDV) Fiber Optics, Communications, Low Voltage,
Fire Alarm, Electronic Security Systems Installations & Related

NTC Low Voltage Training & NICET Exam Study Guides
Low Voltage Training & NICET Exam Study Guides


#213462 - 05/07/14 06:37 PM Re: Direct TV testing work arounds? [Re: sparkyinak]  
ghost307  Offline
Member
Joined: May 2005
Posts: 916
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

#213463 - 05/07/14 11:12 PM Re: Direct TV testing work arounds? [Re: sparkyinak]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,124
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

#213464 - 05/08/14 08:30 PM Re: Direct TV testing work arounds? [Re: sparkyinak]  
JoeTestingEngr  Offline
Member
Joined: Nov 2005
Posts: 790
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


#213470 - 05/13/14 04:49 AM Re: Direct TV testing work arounds? [Re: sparkyinak]  
dougwells  Offline


Member
Joined: May 2003
Posts: 1,140
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.


#213485 - 05/22/14 09:35 PM Re: Direct TV testing work arounds? [Re: sparkyinak]  
JoeTestingEngr  Offline
Member
Joined: Nov 2005
Posts: 790
Chicago, Il.
So what happened?


#213488 - 05/23/14 04:35 AM Re: Direct TV testing work arounds? [Re: JoeTestingEngr]  
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,327
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


Member Spotlight
waymag
waymag
dallas, texas, USA
Posts: 67
Joined: January 2002
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.022s Queries: 15 (0.004s) Memory: 0.7902 MB (Peak: 0.9483 MB) Zlib enabled. Server Time: 2017-10-23 15:25:49 UTC