ADO steckerbelegung siemens T1000 Thema ist als GELÖST markiert

[JaviRTTY]

Hello again, here is the photo of the LAT.
Let's see if it's this one, and if it's dual current or AFSK.

[DF3OE]

Yes, it is clearly a double current LAT board.
All these silver capacitors are Tantalium type. Especially the 10uF can cause problems.
But those are mainly on the main board and the STT board used.
Anyway be aware of those capacitors in general, the mostly are the problems, not the power supply itself.

The power supply is one of the first commercial used power supplies ever. It needs correct loads to operate.
It has got a supervising system integrated and when one value (current) does not match correctly it stops working
with a "click click click" in about a 1 second period, to check the value again and again....

[JaviRTTY]

Hi thanks
I have checked the capacitors and I do not see any in short circuit, the power supply, I have checked the voltages and I choose this, with the source in vacuum.
13.62 , less - 13.63 -- 42.1 and 5.75 volts
there should be 12, -12, 40, and 5 volts tolerance +-5%
These voltages are not dangerous, I repeat, this is not connected to the teletype, it has not been connected yet.
5 volts for the integrated modules or cards
12 volts for the button lamps and power the LAT card
-12 volts for MOS modules
40 volt electromagnetic coils and high speed motors
-----
But I still don't know how to connect the ADo8.
In which pins do I have to put the 60 volts and if a 1 and if it is +60 or 0 it is -60. which connector pins?

[M1ECY]

Hi Javi,

Cool, so we know for certain that it is a double current card.

Normally, pins 1 and 2 are the send loop, 3 and 4 the receive loop, with 7 and 8 being used for an incoming call alarm, be aware that we do not have any Spanish documentation.

Double current is not a matter of applying +ve volts and -ve volts somewhere, but more that there is a ground pin for send, and a ground pin for receive, likewise there is a signal pin for send and a signal pin for receive, these signal pins are switched according to Mark/Space, or +ve/-ve and the current is limited to a maximum value of 20ma by external resistance.

You can probably just use a low voltage supply (much lower than 60v) for testing - it is the current that matters.

I will see if I can find anything that relates to the Double Current card in the files section, if so I will extract the useful information for you.

Please, however, do replace the 10uf and 4.7uf capacitors, I absolutely guarantee that they will fail, and you could easily destroy the main board, printer board, and LAT - I speak from complete experience.

[M1ECY]

Hi Javi, please upload a picture of the board part number, normally printed in black ink on the front face, and etched into the board copper on the rear face. Please upload as large an image as is possible so we can zoom in and check details.

[JaviRTTY]

Hallo M1ECY
Sorry, I don't know very well what photo I have to upload, forgive my clumsiness, I have to translate with google, it's a bit difficult for me.
I understand that I upload the photo of the large plate, board big , is that correct?
but I don't know which area.
I appreciate the help that you are providing me.
One of these days I'll get the woman out of bed and put the teletype on.

[JaviRTTY]

IMG_20230107_111055.jpg

this one board

[JaviRTTY]

Hello M1ECY
The other day I connected the T1000 to the electrical power, the device apparently works. it was a lot of illusion.
look at the voltages in AD08 and look at the voltages in connector 1 and 2 and it had 60 volts, being completely off. When turning on I change the polarity of the 60 volts.
in RX, I have not tried .
I don't know how I can connect 3 and 4, if I put in a 60 volt signal with ones and zeros, modulated with baudot at 50 bauds, does the teletype write?