Products > Test Equipment
Test Equipment Anonymous (TEA) group therapy thread
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Peter_O:
Sometime it's the basics.
After 9 years of heavy use the first switches in my remote switch box of 2x8 multiple sockets started sparking badly, despite rated for 16 Amps.

Fortunately they were still avalable and the connectors are spade plugs.
Good for the next 9 years.



Kosmic:

--- Quote from: bd139 on July 04, 2022, 05:48:12 pm ---
--- Quote from: Robert763 on July 04, 2022, 05:39:04 pm ---While not TEA pricing, £650 is not that extreme for a working Fluke 8920x. It is a thermal TRMS meter and they are very few and far between if you want a new one. The Flukes are generally newer than the obvious alternative the HP 3403C

--- End quote ---

Well I think if I was after a new one I'd probably start at the application and work back. The bandwidth on the Fluke isn't that great at 11MHz. If you need to push it past the 11MHz on the 3403C then the 2% after 10MHz might be better served with a well terminated 2GS/sec digital scope and some measurement averaging  :-//. Below 11MHz, interesting market gap for new stuff  :popcorn:

RF is a different matter though ...

--- End quote ---

The Fluke can reach 20MHz on the 20V to 20mv ranges. The -3dB point is apparently at 40MHz.
PA0PBZ:
@Vince, do you have a camera and microphone that you can connect to your pc? If so, there's no need to use a phone: https://www.microsoft.com/fr-fr/microsoft-teams/log-in
Specmaster:

--- Quote from: bd139 on July 04, 2022, 05:03:11 pm ---<snip>

On cars there are diminishing returns on fuel cost and repairs. You end up paying more keeping something which is why I got rid of that fucking awful Fiat and will be getting rid of my Citroen soon.

Edit: rise in fuel prices = inefficiency liability.

--- End quote ---
This might make you rethink that strategy

Robert763:

--- Quote from: bd139 on July 04, 2022, 06:00:45 pm ---
--- Quote from: Robert763 on July 04, 2022, 05:57:23 pm ---And where are you going to get a 2Gs/s 14 bit 'scope for £650 ? :popcorn:
Most 'scopes are useless for precise amplitude measurement. 8 bits is ~ 0.5% error.

--- End quote ---

You’re not measuring amplitude. You’re integrating and interpolating samples.

--- End quote ---

 :-// As you are integrating digitally you have to digitise the AMPLITUDE at adequate resolution. As it may not be noise you are measuring you can't average to fudge the results get an extra bit or two of resolution.
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