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Test Equipment Anonymous (TEA) group therapy thread

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bd139:
What an idiot seller. I've had that before. It was a Philips meter so the entire thing disassembled itself in transit. Total write off.

Nice to see it's in good condition otherwise!

Specmaster:
Yep, the internal lead acid battery appears to be dead, but I did expect that after all these years, I may replace that as I did in my other one.

2 more companies been touch ref 3478A, one is emailing his quote to me, the other gave me a verbal quote, they are in Leeds and calibration to 2dp is £59+vat or 4dp £80+vat, carriage was extra, WTF! its a 5dp meter for fucks sake. There was no mention that they know its a 5dp meter but could only do 2 or 4dp in their voice mail??  If they were a proper calibration laboratory, I would expected them to have acknowledged that it was a 5dp but however they could only do it to 2 or 4 places, complacency strikes again. :palm:   

med6753:

--- Quote from: Specmaster on May 02, 2018, 10:31:30 am ---The latest addition to my gear arrived today, a HP3466A but sadly because of poor packing, the handle is in 2 parts. It was all nicely wrapped up in bubble-wrap, but instead of folding the handle down and back so it tucks up between the feet, it was wrapped up out straight in front of the meter and suffered as a result :palm:. The seller has given me a £5 refund so thats helped.



--- End quote ---

Similar thing happen on a Fluke 8600A. But luckily it was just one corner rather than completely broken. Epoxy fixed it up.

Specmaster:
3478A quote from Lambda Calibrations for the calibration and return carriage of the meter, all up including VAT for the princely sum of £208.92, thats nearly 6 times what I paid for the meter, that makes RS look like a real bargain.  :--

bd139:

--- Quote from: Specmaster on May 02, 2018, 01:16:35 pm ---3478A quote from Lambda Calibrations for the calibration and return carriage of the meter, all up including VAT for the princely sum of £208.92, thats nearly 6 times what I paid for the meter, that makes RS look like a real bargain.  :--

--- End quote ---

What the fuck were they thinking?!?!? That's a "go away" quote!

..................

Anyway more TEA from me (finally).

Nabbed a Leader 17A signal generator for £31 off ebay as untested. These things literally have nothing in them to go wrong. If they aren't smashed they will probably work. This is a very much cloned instrument by the Chinese. Lots of inferior clones exist out there, including historically from crap shifters Maplin. But alas this is the original made in Japan unit which has superior capacitors and surprisingly high tech innards!

I like these because of the manual control (try manually filter sweeping a synthesizer or finding the resonant point of a double tuned circuit - kill me!) and the price.



I cracked it open, as per regulations, to look inside before I even fired it up. The power supply is a nice simple design and quite elegant. Greeted with a panasonic capacitor as well no less. No wun hung lo here.



Moving along a bit we have the main tuning capacitor and reduction drive assembly. Nice and tight. Ridiculously high quality capacitor in this one.



And now for the anachronistic thing. This is basically a giant LC oscillator design which has been around since the 1940s with various tubes, transistors and ICs connected to it. But what is this? Surface mount parts! A fully discrete oscillator and ALC section hides in here. The earlier units didn't have ALC.



And on to the glorious bit. This is pretty much unchanged from the 1940s:



And in action, shouting at a Baofeng:

https://youtu.be/hfrA_lH7iEQ

Dial calibration is about right ... 1/2% off on the higher ranges which is pretty normal for these.

 :-+

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