Author Topic: EEVblog #655 - Auction Score  (Read 40214 times)

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Offline EEVblog

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EEVblog #655 - Auction Score
« on: August 22, 2014, 12:00:31 am »
Lots of test equipment auction goodness from Precision Mechatronics who went into liquidation.
And is it possible to mod a system PSU with binding posts?
Service manual: http://cp.literature.agilent.com/litweb/pdf/5959-3376.pdf

Keithley 2400 SMU Source Unit
Agilent 54845A 1.5GHz Infiniium Oscilloscope
Agilent E3646A dual output bench power supply
Agilent 6641A and 6643A DC system power supplies.
HP 3488A GPIB Matrix Switch

« Last Edit: August 22, 2014, 11:15:20 pm by EEVblog »
 

Offline EEVblog

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Re: EEVblog #656 - Auction Score
« Reply #1 on: August 22, 2014, 01:13:18 am »
You will always be able to beat a dealer at auction. They are never going to bid into their profit margins.  They are certain to have a clear limit and will never exceed it.

But they also have commercial clients who will pay top dollar for stuff, so they can often afford to pay more than you think.
 

Offline gudenau

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Re: EEVblog #656 - Auction Score
« Reply #2 on: August 22, 2014, 01:15:24 am »
Could I have the Windows scope?
sudo dd if=/dev/zero of=/dev/sda
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Offline lowimpedance

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Re: EEVblog #656 - Auction Score
« Reply #3 on: August 22, 2014, 01:27:21 am »
The yellow banana will have trouble fitting into the cutout on the system supplies !! :D.
Seriously some nice gear but seeing the inside of the system supply was the real highlight of the video, what a thing of beauty.
I now want one, damn you  :). Guess I will wait for your auction of the excess stuff, (dont you still have gear from the previous 'auction score' ?).
The odd multimeter or 2 or 3 or 4...or........can't remember !.
 

Offline Tek_TDS220

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Re: EEVblog #656 - Auction Score
« Reply #4 on: August 22, 2014, 01:38:21 am »
It's great that you got these deals, but I hate to see manufacturing companies going out of business.
 

Online BravoV

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Re: EEVblog #656 - Auction Score
« Reply #5 on: August 22, 2014, 02:24:09 am »
And is it possible to mod a system PSU with binding posts?


Offline edpalmer42

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Re: EEVblog #656 - Auction Score
« Reply #6 on: August 22, 2014, 04:09:11 am »
I have an HP 6622A System DC Power Supply (Dual Channel, 20V@4A or 50V@2A).  It has the same type of terminal strip on the back as your 6641A and 6643A units.  When I got it, one of the channels was dead because the terminal strip had broken the solder joints.  I was surprised to see such a poor quality terminal strip on a piece of HP equipment.  What were they thinking when they specified terminal strips that aren't bolted to the board?

Ed
 

Offline Refrigerator

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Re: EEVblog #656 - Auction Score
« Reply #7 on: August 22, 2014, 07:11:08 am »
Am i the only one to notice that there's EEVblog #656 and #654 but there's no #655, or is it somewhere else ?
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Offline EEVblog

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Re: EEVblog #656 - Auction Score
« Reply #8 on: August 22, 2014, 07:19:34 am »
Am i the only one to notice that there's EEVblog #656 and #654 but there's no #655, or is it somewhere else ?

Oops, yeah, that was supposed to be the maker faire interviews...
 

Offline Electric flower

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Re: EEVblog #656 - Auction Score
« Reply #9 on: August 22, 2014, 08:36:31 am »
Video gave me blue balls.
All work and no play makes Jack a dull boy.
All play and no work makes Jack a mere toy.
 

Offline digital

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Re: EEVblog #656 - Auction Score
« Reply #10 on: August 22, 2014, 09:57:17 am »
A good score Dave obviously you read the paper for the auctions I wish we had the opportunities in Adelaide for those type of auctions that Sydney does but I would  bet you went to sleep that night with a grin on your face.I don't suppose you would let us know your Ebay name.Regards to all. Wayne
 

Offline ryanmoore

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Re: EEVblog #656 - Auction Score
« Reply #11 on: August 22, 2014, 10:17:03 am »
Could these jumper links be the only difference between the 6641-6645 models?, and the different features are just software limited?

 

Offline george graves

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Re: EEVblog #656 - Auction Score
« Reply #12 on: August 22, 2014, 10:32:34 am »
Could these jumper links be the only difference between the 6641-6645 models?, and the different features are just software limited?



;)  I want to know too!  Dave - you have your marching orders!  ;)

Offline jeremy

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Re: EEVblog #656 - Auction Score
« Reply #13 on: August 22, 2014, 10:41:27 am »
let us know when you pop them on ebay!  ^-^
 

Offline jancumps

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Re: EEVblog #656 - Auction Score
« Reply #14 on: August 22, 2014, 11:02:27 am »
A good score Dave obviously you read the paper for the auctions I wish we had the opportunities in Adelaide for those type of auctions that Sydney does but I would  bet you went to sleep that night with a grin on your face.I don't suppose you would let us know your Ebay name.Regards to all. Wayne
if i recall, there is or was a link to ebay on the old alternatezone website.
 

Online TiN

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Re: EEVblog #656 - Auction Score
« Reply #15 on: August 22, 2014, 11:10:34 am »
We demand 2400 teardown  :P
Would be interesting to compare if it's same to mine.

Your's probably newer, as it have BLUE LED on ON/OFF button  :-DD

Also if you still have those Agilent SMU's, would be cool to put a comparsion :)
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Offline schopi68

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Re: EEVblog #656 - Auction Score
« Reply #16 on: August 22, 2014, 11:17:57 am »
Looks to me as if these jumpers are only for identification of the model. They are R901 to R905, located on the buttom right side of the circuit diagram on page 165 of the Service Manual (Figure 6-5). According to the diagram they are only connected one-sided to +5V.

As you can see in the Parts List, there are several differences between the different models (components with different values, other transformers etc...)
 

Offline peter.mitchell

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Re: EEVblog #656 - Auction Score
« Reply #17 on: August 22, 2014, 11:43:53 am »
Why is there a banana on the stack?

For scale of course!

Example; example!
 

Offline Cside

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Re: EEVblog #656 - Auction Score
« Reply #18 on: August 22, 2014, 11:57:39 am »
why do you need so many repeat units?

Ive been trying to slowly refit my workshop with better equipment, When this auction came along my heart was set on it.
I ended up not being able to bid on anything due to some weird techinical issue with online bidding. frustrating.
 

Offline mikepa

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Re: EEVblog #656 - Auction Score
« Reply #19 on: August 22, 2014, 12:00:23 pm »
Can you give us a rough idea of how much you paid for this stuff at auction?   I've never come across equipment auctions like this in the US .. .I'm sure they are there, but finding out about them is the tricky part.
 

Offline EEVblog

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Re: EEVblog #656 - Auction Score
« Reply #20 on: August 22, 2014, 12:11:52 pm »
Also if you still have those Agilent SMU's, would be cool to put a comparsion :)

No, they got shipped back  :(
 

Offline EEVblog

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Re: EEVblog #656 - Auction Score
« Reply #21 on: August 22, 2014, 12:12:46 pm »
why do you need so many repeat units?

It was 5 PSU's in one lot.
 

Offline EEVblog

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Re: EEVblog #656 - Auction Score
« Reply #22 on: August 22, 2014, 12:14:32 pm »
Looks to me as if these jumpers are only for identification of the model. They are R901 to R905, located on the buttom right side of the circuit diagram on page 165 of the Service Manual (Figure 6-5). According to the diagram they are only connected one-sided to +5V.
As you can see in the Parts List, there are several differences between the different models (components with different values, other transformers etc...)

Yes. I haven't looked in detail yet, but I suspect it sets the voltage and current limits (and associated encoder resolution) in firmware. So you might be able to eek out some extra performance, but surely the transformer has to differ in each model.
 

Online mikeselectricstuff

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Re: EEVblog #656 - Auction Score
« Reply #23 on: August 22, 2014, 12:19:35 pm »
You are going to teardown that scope i assume.. :D
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Offline EEVblog

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Re: EEVblog #656 - Auction Score
« Reply #24 on: August 22, 2014, 12:20:38 pm »
You are going to teardown that scope i assume.. :D

Probably, but I have to be careful of course, it's worth a pretty penny on ebay...
 


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