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[CrazyTeeka]

Here are some initial results from HST-3000 Copper Tests, what can you guys see from these results:

*hh:mm:ss 12   dd/mm/yyyy
*05:37:45 PM   07/08/2015
#=======================================
#DVOM SCREEN   
AC Voltage:   Highest   Lowest
 A-B:   0.7   0.7   0.7
 B-E:   2.0   2.3   0.5
 A-E:   2.0   2.5   1.2
*hh:mm:ss 12   dd/mm/yyyy
*05:38:01 PM   07/08/2015
#=======================================
#DVOM SCREEN   
DC Voltage:   Highest   Lowest
 A-B:   +49.1   +49.1   +49.1
 B-E:   -3.6   +3.6   +3.6
 A-E:   -53.0   +53.0   +53.0
*hh:mm:ss 12   dd/mm/yyyy
*05:38:16 PM   07/08/2015
#=======================================
#DVOM SCREEN   
Resistance:   Highest   Lowest
 A-B:   89.9 K   90.0 K   89.9 K
 B-E:   11.0 K   11.0 K   11.0 K
 A-E:   96.0 K   96.1 K   96.0 K
Test Duration - Tip Ring:   00:00
Test Duration - Tip Ground:   00:00
Test Duration - Ring Ground:   00:00
*hh:mm:ss 12   dd/mm/yyyy
*05:39:09 PM   07/08/2015
#=======================================
#DVOM SCREEN   
#Distance to Short:
Temperature:   10.0°C
Gauge:   Cu 0.32 mm
Distance to Short:   2061 m
Resistance:   837
*hh:mm:ss 12   dd/mm/yyyy
*05:39:51 PM   07/08/2015
#=======================================
#DVOM SCREEN   
DC Current:   Highest   Lowest
 A-B:   +38.4   +38.9   +38.3
 B-E:   +0.0      
 A-E:   +0.0      
JDSU Corp.
HST-3000
Software Version : 8.00.06
*hh:mm:ss 12   dd/mm/yyyy
*05:42:11 PM   07/08/2015
#=======================================
#AC Balance:   68   dB
JDSU Corp.
HST-3000
Software Version : 8.00.06
*hh:mm:ss 12   dd/mm/yyyy
*05:43:09 PM   07/08/2015
#=======================================
#Balance / Noise / Power Influence
#-----------
PI:   -18   dBmp
Noise:   -80   dBmp
Balance:   63   dBmp

[burakkucat]

From the second DVOM screen-copy, I can see that the A- & B-wires of that pair are reversed. (But it makes no difference to the operation of the circuit.) 

Do you have copies of the JDSU documentation? If not, I can make a copy of what I possess available for you to download.

[CrazyTeeka]

From the second DVOM screen-copy, I can see that the A- & B-wires of that pair are reversed. (But it makes no difference to the operation of the circuit.) 

Is this the right way round?

#DVOM SCREEN   
DC Voltage:   Highest   Lowest
 A-B:   -49.1   +49.1   +49.1
 B-E:   -53.0      
 A-E:   -3.6

Do you have copies of the JDSU documentation? If not, I can make a copy of what I possess available for you to download.

I would love a copy.


Possible Short?

#DVOM SCREEN   
#Distance to Short:
Temperature:   10.0°C
Gauge:   Drop No.10
Distance to Short:   4475 m
Resistance:   832
*hh:mm:ss 12   dd/mm/yyyy
*08:07:06 PM   07/08/2015
#=======================================
#DVOM SCREEN   
#Distance to Short:
Temperature:   15.0°C
Gauge:   Drop No.10
Distance to Short:   4404 m
Resistance:   835
*hh:mm:ss 12   dd/mm/yyyy
*08:07:13 PM   07/08/2015
#=======================================
#DVOM SCREEN   
#Distance to Short:
Temperature:   20.0°C
Gauge:   Drop No.10
Distance to Short:   4258 m
Resistance:   823

[burakkucat]

Is this the right way round?

#DVOM SCREEN   
DC Voltage:   Highest   Lowest
 A-B:   -49.1   +49.1   +49.1
 B-E:   -53.0      
 A-E:   -3.6

It most certainly is.   

I just use a DMM, set to the 200V DC range. The +ve probe is connected to a good earth and the -ve probe is connected to each wire of the pair in turn. The B-wire shows the biggest PD wrt earth and the A-wire shows the smallest PD wrt earth. The difference between B-to-earth and A-to-earth should (essentially) equal that of B-to-A. For the pair you have tested, above, it would be B-to-earth = 53.0V, A-to-earth = 3.6V (notice they both are positive values) and B-to-A = (53.0 - 3.6) = 49.4V.

Hmm . . . I don't think you can obtain a sensible reading for the AC balance of a pair with t'other end connected to the DSLAM/MSAN/exchange. I'm fairly sure that the remote end (remote to the end from that which you are testing) needs to be isolated. Perhaps Black Sheep will advise, when he has a moment to spare?

And, likewise, for RFL. (Resistive fault location.) 

(You have a PM.)

[Weaver]

How do I knacker the exchange using my JDSU?

[burakkucat]

How do I knacker the exchange using my JDSU?

With difficulty! 

If I was to do something silly . . . say connect my Ohmmeter 18C directly across the service feed and give the circuit the full 500V DC, I would expect the protection equipment to promptly clamp both legs of the pair to the exchange's protective earth.

[Weaver]

> with difficulty

Phew! 

[CrazyTeeka]

When I use a BT phone in test socket I cannot hear any crackling on the line.
When I use 1st HST 3000's POTS phone on bare wire I can hear crackling on the line.
When I use 2nd HST 3000's POTS phone on bare wire I can hear crackling on the line.

Any ideas?

[GigabitEthernet]

I would suggest trying another POTS phone

[CrazyTeeka]

I would suggest trying another POTS phone

I guess I might need to buy a 2nd BT phone, as BT have a silly fault finding policy.

Sometimes I feel like banging my head on a wall proving there is a fault to OpenReach. 

I'm feeling a little frustrated right now.

VDSL Logs Attached.

[NewtronStar]

I'm feeling a little frustrated right now.

That's why it better to let the fault brew into a big fault a fault the OR engineer can easily see and fix if not you could expect upto 9 OR visits to find a small fault, it's just a waste of your time and there time.

[CrazyTeeka]

That's why it better to let the fault brew into a big fault a fault the OR engineer can easily see and fix if not you could expect upto 9 OR visits to find a small fault, it's just a waste of your time and there time.

Knowing OR anything better than no VDSL service is fine. 

I guess drops in SNR (3db or lower) and resyncs and 27meg down from 40m, when the other line does 40m, is ok in OR's eyes. 

I know it cannot be REIN as that would impact both lines. I can only assume i'm on a bad pair.

My ISP is providing a replacement modem/router to try, they have to follow BT fault finding policy to report a fault, sadly JDSU HST3000 results only count when done by OR, if i'm lucky my results may count for something.

[Dray]

My ISP is providing a replacement modem/router to try,

I'm surprised you didn't just swap the 2 modems you have.

[GigabitEthernet]

By the time you'd had 9 visits a D-side change and lift and shift would have already been done.

Now I don't know if that will help Teeka's line but from my experience its best to be persistent with Openreach. There are good engineers out there, you just need to find them

[NewtronStar]

sadly JDSU HST3000 results only count when done by OR, if i'm lucky my results may count for something.

have asked myself a number of times why anyone would want you use such and expensive tool in a residential home other than being curious it won't fix the fault it's only a diagnostic tool used by OR to track were on the circuit the fault may lie.

That sort of tool would just frustrate me, being able to see a fault but not able to physically do anything about it, gezz the HG612 modem stats are enough for me