[Heathkit] Off topic Eico 955 question

[Garey Barrell]

Dan -

The manual for the 955 on BAMA specifies RG-58A/U coax, and regular test 
prod wire, "kinkless" being the very flexible stranded wire used for VOM 
leads, for the two separate leads.  They studiously avoid specifying the 
length of the test cables, but I suspect something in the 24" range 
would be typical.

They have all sorts of caveats about separating the cable from the 
instrument, (although if it's that critical, why the Hxxx did they make 
it detachable???,) and gives the adjustment procedure if the cable has 
to be replaced.  Essentially, from a quick read, it looks like the just 
"tune out" the capacity of the cable by adjusting a variable inductor.  
If you back the slug all the way out and it still doesn't meet the 
specs, you'll probably need to shorten the test cable to reduce the 
parallel capacitance.

73, Garey - K4OAH
Atlanta

Drake 2-B, 4-B & C-Line Service CDs
<www.k4oah.com>



OTAKEBI at aol.com wrote:
> I have an old Eico 955 Capacitor Tester.
> However, I do not have the test cable.
> I do have what is left over of the plug that goes into the tester and the  
> Instruction Manual on how to use the unit.
> The test leads are of a specific type cable and length according  to the 
> manual.
> It does not go further as to a replacement that will work or how to  homebrew 
> one.
> Does anyone on the list know how to construct a new test lead to make this  
> unit functional for testing?
> I do have the instructions for calibration once new test leads are  installed 
> so I do not need those instructions.
> Thanks for any help.
> Dan/N4VET
>
>