Hewlett Packard HP334A distortion analyzer - Marconi TF2005R Osc
ฝัง
- เผยแพร่เมื่อ 4 ธ.ค. 2013
- The Hewlett Packard HP334A distortion analyzer and the Marconi TF2005R audio oscillator. Test equipment from The Radio Workshop.
www.radio-workshop.co.uk/
You can comment on this video via Twitter... @Radioworkshop Or on my Facebook page here... / radioworkshop - วิทยาศาสตร์และเทคโนโลยี
Hi Ray, Thank you so much for the Distortion Analyser, and yes I had seen this video some time ago, and it still had its "blue" thumbs up I gave it before. Paul
Thanks, Paul. It was great to meet you yesterday. Take care, Ray.
I used to use the HP 334A to measure sinad at PYE Telecommunications back in the late 70s and early 80s A brilliant piece of kit
The great thing about that series of THD analyzers, is apparently, H-P made a huge number of them, so they're available for reasonable prices on Ebay. Because they're pre-SMD/LSI, they're easy to fix. Here's a rundown of the different models:
331A: The basic version. 332A: Has the RF AM detector for AM xmttr tests. 333A: Like the 331A, but with auto-null. 334A: Has both the AM detector & auto-null. Basic specs are the same for all four. Every serious audiophile should have one, and the 332A/334A are a real boon to those of us who work on AM BCB xmttrs.
They certainly are nice pieces of kit.
A very good simplified way on how the distortion analyzer works without getting technical, "excellent"
Thanks John, glad you liked the video.
Hello, I recently got a working 334a and I'm learning how to use it.
A correction to your description: The manual states the 334a has a high pass filter, not a notch filter. Later units, including i believe, the 339 actually use a notch filter.
Thanks for pointing that out.
Two nice free pieces of "Kit" Ray!
I never knew how they measured THD before. Well this is pretty simple and makes perfect sense to read the harmonics other than the prime freq that is notched out.
73s my friend,
Tom
Hi Tom, nice to hear from you. Yes, it is pretty simple. People imagine that measuring distortion is a complicated process but it's not. Having said that, this piece of gear doesn't take into account any distortion which might be present on the input to the amplifier. Cheers, Ray.
I am jealous of your clean bench!
+Phil Hemenway Highly polished! Haha! Cheers, Ray.
Hi Ray,
I have heard of distortion test equipment but never seen or had the pleasure of using them - I have never worked at a radio/TV service centre that had that type of equipment. Testing the distortion level on the audio output of a domestic radio sounds interesting my friend.
Regards,
Phil.
Hi Phil, it is interesting but, to be honest, it's not too important on 1940s radios. However, it's nice to be able to check the distortion level. Regards, Ray.
Could you use this as a cheesy SINAD meter? Sounds like they both work on the same principle?? I purchased a distortion meter and am waiting for to arrive. Thanks and 73's OM DE Jack, VEG
Vintage Electronics Geek possibly. It’s worth a try.
Just restored one, repaired and calibrated
th-cam.com/video/NJxPiqW5Ww4/w-d-xo.html
th-cam.com/video/uzUv1s65ziQ/w-d-xo.html
+Jordan Rubin Thanks Jordan. Very interesting video. Cheers, Ray.