[volt-nuts] Tektronix TM500 extender cable kit

Mark Wendt wendt.mark at gmail.com
Mon Aug 4 05:24:07 EDT 2014

John Griessen on the Tek list also sells extenders for both the TM50x and
the 7000 series of scopes.  I have both sets from him.  His are a little
more expensive than $20 a kit, but he includes the pre-cut and twisted
wires and the connectors.

Here's an image of his 7000 extender, soldered up:



No connection with John's business, just a happy customer.

On Mon, Aug 4, 2014 at 1:59 AM, Mark Sims <holrum at hotmail.com> wrote:

> I just finished laying out a small circuit board for building an extender
> cable for the Tek TM500 series mainfames / modules.  Prototypes are off
> being fab'd at OSHPARK.  Should be here in a couple of weeks.  It uses two
> 39/40 pin ribbon cables (all the power pins use two wires)... e.g.
>  IDE/PATA disk drive cables.
> I know LOTs of us have and use these venerable old workhorse machines.
>  They are well documented and easily maintained (particularly if you have
> extender cables).  Is there any interest in purchasing a kit of all parts
> to build an extender cable.   With a moderate amount of interest the price
>  looks like it would be around $20 per kit plus shipping (probably around
> $6 for shipping in the US for as many that can be stuffed in a small
> priority mail flat rate box... most serious TM500 users will want 2 cables
> for the wide modules).  Kit cables would be 18-19" long.   TM500 extender
> cables have been selling on Ebay for $150-$350!
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