Author Topic: Enertec Schlumberger 2721 Universal Counter  (Read 3437 times)

Mr Eastwood

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Enertec Schlumberger 2721 Universal Counter
« on: May 08, 2016, 12:07:41 PM »
Here's some pics of universal counter I picked up on Ebay about 6 years ago, it was shortly after I got my analogue scope;  you don't see very many of these on the second-hand market;  I originally lost the auction for this but the winning bidder returned it to the lady who sold it because he said it didn't work - so the lady offered it to me;    when it arrived I thought the same until I discovered a CRT brightness knob on back of the unit which was turned right down, which might have been the issue;  also I found it only works via the connectors on the back not the ones on the front.   I later told the lady it was working fine and she was really pleased because it was her late husbands who used to work with submersible crafts.


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SeanB

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Re: Enertec Schlumberger 2721 Universal Counter
« Reply #1 on: May 08, 2016, 12:35:12 PM »
I bet there is a menu option to select input to the front though, and it lived in a rack so never was changed back. I will guess that if that display does die you can easily change it with a small MDA converter and a small VGA colour display. Nice linear supply in there as well, and it looks like it was made in 1986 or so.

Mr Eastwood

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Re: Enertec Schlumberger 2721 Universal Counter
« Reply #2 on: May 08, 2016, 12:39:24 PM »
hi Sean,  this is the menu screen, you can scroll down for a few more stuff - let me go and check see if there is an option to switch the inputs.
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Mr Eastwood

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Re: Enertec Schlumberger 2721 Universal Counter
« Reply #3 on: May 08, 2016, 02:55:06 PM »
nah I can't see any options to switch from the rear connectors to the front.
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SeanB

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Re: Enertec Schlumberger 2721 Universal Counter
« Reply #4 on: May 08, 2016, 03:22:30 PM »
Must be a GPIB instruction then, there looks like there are relays there to do it. Or a small switch somewhere on the board or a keypress combination ( French UI misdesign), better look for a manual.......

Mr Eastwood

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Re: Enertec Schlumberger 2721 Universal Counter
« Reply #5 on: May 08, 2016, 03:25:29 PM »
Must be a GPIB instruction then, there looks like there are relays there to do it. Or a small switch somewhere on the board or a keypress combination ( French UI misdesign), better look for a manual.......

yeah possibly;  I looked for ages when I first bought it but never found a manual,  just info on some loose specs for it.
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