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Test Equipment Anonymous (TEA) group therapy thread

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tautech:

--- Quote from: Specmaster on May 25, 2018, 09:25:33 am ---
--- Quote from: bd139 on May 25, 2018, 09:01:11 am ---You can indeed get them from eBay. Will order a couple later (I will blow one up) :)

--- End quote ---
Yep, I expect you will, you know that you have to justify your pf name [emoji6]

--- End quote ---
I wasn't gunna mention them. Wondering if he only has one or are all ten (including thumbs) that way inclined.  :-DD

Smokey Joe bd139 !  :)


--- Quote from: bd139 on May 25, 2018, 09:34:22 am ---They're quite easy to smoke. All you have to do is stick it across two phases on a three phase system, as our sparky did with a bus bar and a 240V drop a while back. Fecking eejit.

--- End quote ---
Ah so there are others similarly afflicted.  :scared:

Berni:

--- Quote from: BravoV on May 25, 2018, 09:18:55 am ---
Thanks for the noticing about it's sensitive input, btw, I'm not aware there is new vs old version, whats the different ?

--- End quote ---

Its the 1152A
https://www.keysight.com/en/pd-1000000325%3Aepsg%3Apro-pn-1152A/active-probe-25-ghz?cc=US&lc=eng

Same thing pretty much except the power now comes from the smart probe interface pins. Great if you have a modern Agilent scope to use it on. But i seen people make adapters that inject power and passtrough the BNC over a bulkhead connector.

BravoV:

--- Quote from: Berni on May 25, 2018, 10:03:27 am ---
--- Quote from: BravoV on May 25, 2018, 09:18:55 am ---
Thanks for the noticing about it's sensitive input, btw, I'm not aware there is new vs old version, whats the different ?

--- End quote ---

Its the 1152A
https://www.keysight.com/en/pd-1000000325%3Aepsg%3Apro-pn-1152A/active-probe-25-ghz?cc=US&lc=eng

Same thing pretty much except the power now comes from the smart probe interface pins. Great if you have a modern Agilent scope to use it on. But i seen people make adapters that inject power and passtrough the BNC over a bulkhead connector.

--- End quote ---

Ok, noted. The one I'm talking is older, as comes with separated power box HP 1143A and has big sized N type connector, looks like this :


(random search from Google)

Any experience with this older type ?

Berni:

--- Quote from: BravoV on May 25, 2018, 10:26:11 am ---
Ok, noted. The one I'm talking is older, as comes with separated power box HP 1143A and has big sized N type connector, looks like this :


(random search from Google)

Any experience with this older type ?

--- End quote ---

The actual probe end looks the same and has the same specs so its most likely the exact same probe with a different connector on the end. Some scopes have that power connector built into the front panel so that you don't need the separate box. But the power connector is standard so you can buy it and make your own power supply.

From memory the new version runs from +/- 6V and +/- 12V for power.

Tho this having an N connector makes it more useful on spectrum analyzers, but anything with a 50 Ohm input impedance will work (1Meg will NOT work right) on this probe.

bd139:
Heathkit AC voltmeter arrived. Hermes didn't knacker it. First inspection shows excellent construction, however the transformer is not in a good state as one of the tap terminals is dangling. Not sure I will be powering it up without replacing that transformer.

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