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Re: A question from the unwashed relative to: I built a TM500 mainframe tester, and updated the design. Someone might find this useful?


 

A few things are missing from the descriptions.
1. There was a blank module available2. The modules could be user keyed for certain slots3. They could be interconnected unseen in the rear.4. There is/was a high power compartment (mentioned)5. Every module had their own separate power supply6. Uncommitted pass transistors were available for use.
It was a very nice system.? A one bay TM500 module could house a scope current probe for instance.
You could design your own test instrument with the various modules.

We made a laser scanner that mapped the output of a solar cell by position using two function generators, a power supply module, a multimeter and a glue module.? This drove a storage medical display scope from tek and mirror galvanometers.

The glue module selected x and Y modulation, it set the blanking level and x or xy scanning.? Anyway, the modules electronics were minimal.? All of the interconnections were behind the scenes.

Later, we were able to capture the data with a PDP-11 and A/D converters.? The display was then a VT100 with a board and CRT to turn it into a TEK display terminal.
The main purpose was to scan for defects and up the power of a laser to remove the defects.

The 5000 series added IEEE-488 to the mix.?

take a look here:

On Saturday, January 2, 2021, 3:44:30 PM EST, Roy Thistle <roy.thistle@...> wrote:

On Fri, Jan? 1, 2021 at 11:02 PM, EJP wrote:


I have an FG504 and such a TM504 that I had to correct the phasing on.
If you might indulge a few inquiries...
Did incorrect phasing damage the FG504?
Is that something you did to the TM504?... or was it miswired at the factory... or during a "repair, someone else?"
Do you know... was the TM504... and early manufacture... or a later one?

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