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Who is up for a chalange?

Hi

I saved a pritty old bit of tex a fluke 683 enterprise lanmeter  but it is missing the cable mapper and the the cable identifiers and i cant get my hands on them the chalange is  can they be made or has anyone got some they are willing to crack open and show me its soft gooy insideds

http://www.aaatesters.com/img-fluke-686-enterpriselanmeter-10-100_e.jpg

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menkelis3 years ago

This should be CABLE MAP / ID 0

RJ45
1----------+

19K
2---------+
16k
3---------+

15K
4----------+
15k
5----------+

12K
6---------+
12K
7----------+

10K
8---------+

Pins 1/2 (Tx+,Tx-) = 19K

Pins 3/6 (Rx+,Rx-) = 42K

Pin 1/8 = 100K

nonamesleft (author) 3 years ago

daft question but i have loads of 1k resisters and i need 10k ones can i stick them togeather to make up a 10 or am i just beeing daft

menkelis3 years ago

It I hard to do a line drawing as the extra spaces are removed.
Insider the cable map are seven resistors connected between the eight pins
so that each pin can be tested, and there is a link going from pin 1 to pin 8
that increases in resistance value .

Between pins 1 and 2 is a 19K ohm resistor, between pins 2 and 3
is a 16K ohm resistor.

Between pins 3 and 4 is a 15K ohm resistor, between pins 4 and 5
is a 15K ohm resistor.

Between pins 5 and 6 is a 12K ohm resistor, between pins 6 and 7
is a 12K ohm resistor.

Between pins 7 and 8 is a 10K ohm resistor.

Transmit data (TX) is on pins 1 & 2, Receive data (RX) is in pins 3 & 6.
So the resistance measured for TX pair is 19K ohms, while the resistance
measured on the RX pair is 42K ohms (15K of pins 3&4 + 15K of pins 4&5 +12K of pins 5&6).

The other pins (4&5, 7&8) are used for 100Mhz tests.

I think the total resistance between pins 1&8 (100K ohms) is used for the ID function, but at this time I don't have any other ID plugs to test this. I plan on
borrowing some ID plugs from a newer tester to test me theory out.

nonamesleft (author)  menkelis3 years ago

thanks loads i have read it a few times and it still seems fuzzy but but i will print it out and then hunt down the parts once i can see it in my hands it will click instantly.

how did you get this information if you dont mind me asking

My 683 came with the cable mapper/ID 0 plug and I measured
the pins with my DMM. Since these ID plugs are molded it was
the only way.
nonamesleft (author)  menkelis3 years ago

was wondering how you did it without smashing it. so that's all these things are just resisters and nothing more. I will have to make one up and play with it

Here is a link to another web site where someone HAS done the work
of breaking apart a cable map / ID plug.

http://www.eevblog.com/forum/projects/reverse-engineering-the-fluke-wireview-identifiers/

nonamesleft (author) 3 years ago

i cant even begin to understand that info for the cable map / ID 0 but its getting to where i need to with the info just need to decoe it into blond. thanks for the help

You mean who is up to the challenge of destroying there $700+ meter so you can try and make yours work? LOL

The Identifiers are sealed units. If you break one open you will destroy it.

Check e-bay and try and find one that is labeled as broken. You'll get a good deal on it and chances are the attachments are fine.

nonamesleft (author)  mpilchfamily3 years ago

Never seen one of these parts in person so didnt know if they were screwed togeather or ealed and as alot of people on here know alot about eletronics they may have a clue how these work and how to replecate one. I have looked on ebay and so far no luck and also i have looked for plans for them and emailed the manufacture for help they told me they have retired this device and can no longer get hold of the parts