Author Topic: My poor mans SMU - The Agilent 66311B  (Read 46078 times)

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Online HighVoltage

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Re: My poor mans SMU - The Agilent 66311B
« Reply #175 on: November 10, 2016, 09:52:36 am »
- the thing is now spinning but noisy as h.. :) But very precise and works well.

If you add a 100 Ohm resistor in line with the fan supply, it gets much quieter and still has plenty of air flow.
Or you use an ultra quiet fan with built in temperature control.
I have two of these and they are both very quiet now.

There are 3 kinds of people in this world, those who can count and those who can not.
 

Offline georgd

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Re: My poor mans SMU - The Agilent 66311B
« Reply #176 on: July 07, 2018, 07:16:05 am »
As owner of a 66311B unit with dim display finally decided to replace it with a new one. A seller on ebay offers many types of VFD
 replacement displays for HP power supplies.

The 1st one is for $130:
https://www.ebay.com/itm/HP-Agilent-Keysight-VFD-For-66311A-66312A-6632A-Vacuum-Fluorescence-Display/123034228542?hash=item1ca569573e:g:meYAAOSwhktas22x

The 2nd one is for $85:
https://www.ebay.com/itm/HP-Agilent-Keysight-VFD-For-6634B-Vacuum-Fluorescence-Display/122895199356?hash=item1c9d1fec7c:g:cy0AAOSw4PxaTZug

Only differences I observed is a tiny  bars under sign "OUTPUT AC +DC" in the rightmost lowest corner.
The 66311A version's sign "AC +DC" are underscored but on 6634 version I do not see it.

Do I have to pay 50% for dedicated display?

Georg

 

Offline hakko

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Re: My poor mans SMU - The Agilent 66311B
« Reply #177 on: October 05, 2019, 02:06:03 pm »
Hi! Anyone knows a hack to enable rs232 interface on 66309D series?
 


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