[GreenKeys] Model 28 signal lines

[Paul Heller]

Barry,

My only point, and others may disagree, is that 48v is not enough. 

Paul
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> On Oct 16, 2019, at 4:10 PM, B M <iamvirtual at gmail.com> wrote:
> 
> 
> Many thanks to all that replied. Now that I know it is necessary to confirm the options that might be in place, I can look closely at my machine and compare against the manuals to determine what I need to do.
> 
> Thanks!
> 
> --barrym
> 
>> On Tue, Oct 15, 2019, 12:28 B M, <iamvirtual at gmail.com> wrote:
>> I took a look through the theory & operation manual for the Teletype Model 28 KSR (floor standing model), but I am still confused on where the signal lines in and out are located.  I do see the 2 terminal strips at the back of the cabinet with labels from 1-20 and 21-40.
>> 
>> I have a few questions
>> 1. which terminals are for the signal lines in?
>> 2. which terminals are for the signal lines out?
>> 3. how do I determine that the unit is still set to use 60ma loop?
>> 4. will 48v @ 60ma be sufficient to drive the model 28 KSR?
>> 
>> As you can see, I am not familiar with Teletypes. 
>> 
>> Any help would be greatly appreciated!
>> 
>> Thanks
>> 
>> --barrym
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