How do you use the Simpson 2785 Impedance Bridge Meter

Thread Starter

Electrozapper

Joined Dec 9, 2015
15
I hope I am, at least, halfway. on the right category to post my inquiry. It is "personal" homework but not formal homework.

Okay, down to business of the question. I now own a Simpson 2785 Impedance Bridge Meter. I know...I know....I could just easily get a modern meter to get my data from; however, I wanted to learn how to use this older piece of equipment, anyway. I bought it; therefore, why not learn how to use it? Or, so goes my thinking. Anyway, is anybody knowledgeable on how to use this Simpson 2785 Meter?

Now, I should say, I do have a manual for this meter. Albeit, I am apparently not correctly reading its instructions. You see, I have taken a known valued component (for this example, an inductor, to name just one). Okay, it is 200uH in value. Now, I did test this component on the more up-to-date meters and (using three different ones) obtained values ranging from 200uH to about 206uH. Of course, I do not expect to get that degree of accuracy from the Simpson Meter since it is analogue in nature. Next, then, I attempted to try to obtain a relatively close reading from the Simpson 2785 Impedance Bridge Meter. But, I am obviously not fully understanding the directions as presented by the manual. Obviously, I am misreading them and misinterpreting them as I get nothing that is even close (100uH or less).

Hmmmm, so, is there anybody out there skilled in this meter than can provide a clear, simple, foolproof step-by-step set of directions on how to use this meter for Resistances, Inductors, and Capacitors? Again, yes, I have the manual but am clearly not getting it out straight what the manual is trying to tell me. It is obvious that I am misreading and misunderstanding the directions the manual provides. Therefore, maybe an expert in electronics or an electronics professor can clear things up for me.

Thanks to all in advance!
 

Thread Starter

Electrozapper

Joined Dec 9, 2015
15
... not too much information currently available ... such as a manual. ... found this item, for what it is worth:
http://www.microprecision.com/calibration/12533-SIMPSON-2785-CALIBRATION.html
Thanks for giving it a try. I have both the Meter and the Manual. They both can be obtained from E-bay. Hmmmmm, I shall check out your link and see if that is of assistance. Again, thanks so much for trying. I wager each answer will get me that much closer to the solution. Thanks. .
 
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