Most network cabling is UTP (Unshielded Twisted Pair), Shielded Twisted
Pair (STP) is not very common.

STP Cat6 (or Cat5e) is sometimes used in datacenters but I've not seen
it elsewhere.

Shielded RJ45 connectors have a metal cage, making it easy to recognise:

https://rubimages-liberty.netdna-ssl.com/hi-res/RJ45-STP-L5E_connector_45degree.png


Martin

On 02/01/18 10:25, JS Home jss9h@... 1 wrote:
> Thanks Dieter. The cables I have are all fairly old so maybe they do not have the shield connected.
>
> Jonathan Shapero
> Sent from my iPhone
>
> On 2 Jan 2018, at 08:22, yahoo@... 1 < Doepfer_a100@yahoogroups.com > wrote:
>
>>> Hi everyone. After a bit more research I have answered my own
>>> question. There are 8 cores in a cat 5 cable, and Dieter has used
>>> all of them in the module. That means there is no separate earth
>>> connection. I use nylon washers so my A180-9s were not earthed,
>>> consequently when I tested them in separate cases with an LED
>>> plug, nothing happened. When I removed one washer from each
>>> module so the panels were connected to earth via the mounting
>>> rail and other modules in the case, everything worked fine.
>>> Dieter, you may want to consider mentioning this in the product
>>> description so that other people are aware who are not in the
>>> Yahoo group.
>>> Best wishes to all.
>>> Jonathan
>> In the A-180-9 circuit the A-100 GND is connected to the shield of the RJ45
>> sockets. For all network cables we tried the connections were fine and even
>> GND was connected by means of the shield. To be on the safe side I measured
>> some cables I had available and for all cables the shield was connected. I
>> also cutted one of the cables and it contained 8 single wires plus the
>> shield.
>>
>> Maybe there are cables on the market where the shield is not connected. This
>> could explain the behaviour you described.
>>
>> I'll add the information on our website that cables have to be used where
>> the shield is connected.
>>
>> We could also add longer cables (e.g. 1m) as the price is nearly the same as
>> for the 50cm cables. But a few live playing Eurorack users we asked
>> recommended the 50 cm cable because longer cables are unfavorable for the
>> typical connection of a base (e.g. A-100PB or A-100-PMB) and another case on
>> top (e.g. A-100P9 or A-100PMS9).
>>
>> Best regards and A Happy New Year to all
>> Dieter Doepfer
>>
>>
>>
>>
>>
>>
>>
>> ------------------------------------
>> Posted by: < yahoo@... >
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>>
>> Yahoo Groups Links
>>
>>
>>
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> Posted by: JS Home < jss9h@... >
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> Yahoo Groups Links
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