No subject

> On Jun 6, 2024, at 6:47 PM, skipp isaham via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> 
> Hello Time-Nuts Group,
> 
> I received a donated Texscan Programmable Attenuator, Model PA-51 style this one with Female N-connectors.  It's a nice looking unit and I'm not able to find much in the docs department.  Even a search for Texscan doesn't seem to turn up much, they might be out of business these days(?).
> 
> I'm hoping someone would at least be able to give me the basic information of how to control the attenuation steps.
> 
> The attenuator box itself, has a pair of feed-through capacitors per each box marked attenuation value, one feed-through has a + the match has - .Logic suggests some applied potential/current to a pair of pins turns on or off the corresponding attenuation value.
> 
> Would someone be able to please describe the expected control values/ methods for this Texscan Programmable Attenutator.  Through the Group here or Email direct, what ever is best. Actually having an original data or instruction sheet would be wonderful, but I can and will try to work with whatever information I receive.
> 
> Used / surplus Texscan products seem to "be around", a number of different physical format attenuation products turn up at on line auction (Ebay).  In addition to the PA-51 series (aka PA-5x...), a few models that look like the JFW rotary equivalents are also listed at auction. Might Texscan be or have been a company simply putting their label on other mfgrs products?
> 
> If I can get my head around how to control this PA-51, I can certainly use it for my automated pre-amplifier evaluations. Thank you in advance for any replies.
> 
> Regards,
> 
> Skipp
> skipp025 at yahoo.com
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