Links to more information

Information on the 3000 type relays

http://www.samhallas.co.uk/repository/documents/yellow_book_complete.pdf

on Sam's pages


Great GPO Educational Pamplet on Ordinary Final Selectors

http://www.samhallas.co.uk/repository/documents/ep_telephones_3_4.pdf

on Sam's pages

Notes on final selector of UAX 13
http://www.uax.me.uk/uax13/at60085n.pdf

on Andy Greening' s pages

U connector pinouts on shelf Jacks

Selector Plugs and Shelf Jacks.
Each 2-motion selector is fitted with a 32 connexion point plug which engages with the shelf jack. The plug and jack terminals are commonly known as "U points" and are indicated on the relevant schematic diagrams by a small V together with the jack point number placed on the lead concerned, e.g. jack point No. 20 is represented by V20.

The U points are so designated that the odd-numbered U points start from the centre of the shelf jack (as seen from the rear) and count outwards towards the right. The even-numbered U points similarly start from the centre, and count outwards towards the left. The following allocations are adopted wherever possible :
1. - 1,2ve (in). also connected to TJ3 & TJ5 } from previous
2. + 1ve(in). also connected to TJ4 } Selector
3. Ringing return earth.
4.- ve battery.
5.- ve (out).
6.+ 2ve (in). also connected to TJ6 drives WS relay wiper select
7. Private (out).
8. Dial tone.
9. P wire. also connected to TJ2 & TJ8( 9 and 11 make contact when the selector is removed)
10. C.S.H. or P.G. alarm.
11. Earth.
12.Battery.
13.Test trunk bell
14. Interrupted earth.
15. Release alarm earth. connected to TJ12
16. Busy tone earth. Fed to calling party via A relay
17. Flicker earth.
18. N.U. tone earth.
19. Ringing return battery. (paired 32?)
20. Positive Battery
21. As required.
22. As required.
23. Sleeve.
24. As required.
25. As required.
26. As required.
27. S pulse.
28. Interrupted battery and earth.
29. As required.
30. Ringing tone earth. Fed to calling party via A relay
31. Z pulse.
32. Interrupted ringing. (paired 19?) Fed to the called party via the F relay coil ( that detects answer)

32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31

Counting from the white line at the centre of the Selectors connector to the left it's 2, 4 ,6etc to 32 and to the right 1,3,5 etc to 31...contact 12 is Battery (ie-50 v dc) contact 11 is earth (ie 0 v dc).Incoming line is on 1 and 2, So looping 1 and 2 out to a loop dialling jellybone will allow you to dial into it. p wire is on 9





To power up the selector simply use two croc clips and some cardboard !

Selector Test Jack pin out

Selector Test Jack. (text from page 115 of Atkinson)

Pinouts

13 14 L1 L2

7 8 9 10 11 12

1 2 3 4 5 6

The test jack of the 2000 type selector is of moulded bakelite and is designed on the unit principle to meet various circuit requirements. The top unit accommodates the selector lamp and the label, and provides a "parking place" for a U-link. The remainder of the test jack is built up of 6-spring units which are assembled to form a test jack of 12, All test jacks are numbered in a standard way, i.e. from left to right and upwards. For ease of maintenance the test jack springs are, as far as possible, arranged in the circuit in a uniform way. The springs on a 12-point test jack (by far the most common) are, for example, usually allocated as follows :
1. Rotary magnet.
2. Private (or test and guard) wire.

3, 4. First speaking pair.

5, 6. Second speaking pair.

7. Earth.8. Private wire.

9, 10. Test bell circuit (on 200-outlet switches).

11, 12. Rotary release drive circuit.

13, 14. U-link parking place (on lamp and label strip).

A red capped U-link is normally kept in the parking place where it is not connected to the circuit. A selector can be busied by removing this link to jack springs 7-8 and so connecting earth to the test (P) wire.

This link may also be momentarily inserted in springs 9 and 10 of 200-point selectors to determine whether an odd or even outlet has been seized. The short circuiting of 9&10 allows the test trunk bell to operate (via U connector 13) if the call is switched to the upper bank.
A green headed link is permanently held in springs 11 and 12 where it completes the drive circuit for the rotary magnet on release. If, for test purposes, it is desired to prevent the release of a switch, this link is temporarily withdrawn.

Connect a phone and rotarty release supply as follows

A mystery no longer

Within 20 minutes of posting the the THG mailing list, I am informed by 3 independant strowger lovers that my selector is a 200 outlet 2-10 PBX working Non-director finals............

Hi Hywel

It is a 200 outlet 2-10PBX working final selector (Fig 358 in Atkinson's
"Telephony" - the later version of Herbert & Procter)
It is a 'main' exchange switch not a UAX one hence you'll not find it on
Andy Greening's site.

I've an A4 copy of ATW5216 (non pbx version)

to hand and may have a copy of
ATW5218 - u point connections are the same.
Ian Jolly
-----Original Message-----
From: thgdiscussion@googlegroups.com [mailto:thgdiscussion@googlegroups.com]On Behalf Of Andy Greening
Sent: 21 January 2008 12:48

Hmmm
They looks to me to be 200 outlet 2-10PBX working Non-director finals. They
won't appear on my site as they aren't UAX! The diagram you want is AT5218
(or ATW 52180).
Having spent a bit of time filling my diagrams at the weekend I may be able
to locate that one, as I have some switches that are similar, if not the
same.
I'll look at the weekend, but can promise anything.
Andy G

Mystery Selector

I was given some selectors and after about 15 years of languishing in
a damp shed I have dug them out and would like to get a circuit
diagram for them and understand how they work.

pictures:-

I've worked out by looking in Herbert & Procter (that I got for
Christmas) that they are the 2000 type, they have four sets of wipers
and the following other components:-

11 Relays:-
A Type 19/5
G Type 11630A, H Type 11738.6
B Type 9813 , CD Type 11951
F Type 11749.XA, D Type 11344
E Type 11847, HS Type 11631
J Type 5702, WS Type 4712XA

Relay A and relay D are red the rest are green
Relays F and HS have clear plastic covers on their contacts
Relay A has a u shaped metal shroud around its windings
There are 3 resistors R3,R4,R5 200,200,450 Ohms next to Relay A
and 3 caps C1= 1+1 uF C2= ?,C3= ?

MR1,MR2,RB1,R2,R5,R7,C2,C3 are inside a fold out lid.
http://www.illtyd.abelalways.co.uk/thg/selectorInsidelid.JPG

On the front is what I assume is a test jack (labelled 21J.HAA/4 TJ),
it has three rows of contacts. http://www.illtyd.abelalways.co.uk/thg/selectortestjack.JPG
The top row has 2 contacts far left with a red (I assume fuse) marked
N, and far right a bulb
The second and third (bottom) rows both have 6 contacts, the second
row has what looks like a fuse between the 2 right most contacts (just
underneath the bulb)

A label inside says..
NO.2/3225A HAA80
ATW.52180.ISS 6
FIG.1A

Ive searched the internet incuding Andy Greening's site but can't
quite get a wiring diagram or even a mention of the thing.

I did find a little snippit about the U connectors on
http://lists.ckts.info/pipermail/voip/2007-December/006418.html Which
has encouraged me

"Counting from the white line at the centre to the left it's 2, 4 ,6
etc to 32 and to the right 1,3,5 etc to 31...contact 12 is Battery (ie
-50 v dc) contact 11 is earth (ie 0 v dc).
Incoming line is on 1 and 2, So looping 1 and 2 out to a loop dialling
jellybone will allow you to dial into it. p wire is on 9."

I can't wait to connect a phone to it and see if I get them clicking
and whirring !