I'm working on a piece of equipment and the procedure calls for a 334A distortion analyzer. I work in the Army labs so they don't have one. When I was in the Air Force, we had three at the very least. I was told that since they are obsolete I'll have to deal with it. My question is, why is the 334A still listed as a standard on some equipment? And can the PSA(Army version of the MMR) or any other piece of equipment act as a good substitute?
If you're in an Army lab, you should have a Boonton 1121, but an AN/USM-677or the MMR will work fine as well. The MMR can get pretty far down in the dirt, as far as frequency.
I was planning on using the MMR but I'm not a big fan of the Boonton. Boonton to me is the Great Value brand of the test instrument world.
The 334 has unmatched low frequency capabilities! Many labs still used it for that specific reason.
The MMR may work.. But it has a voltage limit problem as well as impedance issue on some test.
Most labs, and the Army as well I believe, have a Stanford Research distortion analyzer. It is even called out in TME.. Someone is going to have to post the model number.. I am to LAZY to look it up right now..
Mike.
The SR piece is an ultra low distortion function generator (DS360), not an analyzer.
The 1121 is actually a very solid piece of equipment, perhaps it was one of Boonton's mistakes.....
And what in the world are you calibrating using an Army TB that still calls for a 334....
Quote from: CalibratorJ on 09-28-2016 -- 11:52:42
And what in the world are you calibrating using an Army TB that still calls for a 334....
This
I'm calibrating an 8904A multifunction generator. There is no Army TB so we have to use the Air Force TO. We used the Boonton. I agree that they made a mistake and make it work pretty well. But it actually fails other calibrations that the MMR passes. Kind of a hit or miss piece really.