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HP 34401A 3457A 3456A 3478A Standalone Software

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blackdog:
Hi,

Just an update on the 34401 software that is still running on my test computer.
This is not the latest version that Nx-1997 made for W7, but this is a test that I am running for a few more days to gain confidence in the stability of this software.

What I really like is that there is no need to run a very large bulk of other software to do standard data logging on e.g. the 34401A.
When I have some more time again, I will also test my KeySight 34461 and the 34465A.

The picture below nicely shows the drift of my 34401A, which is the warm-up drift and the drift that every measuring instrument has as a result of the temperature variation of the measuring space and a bit of the measuring cables used.
The source is a 10V LAB reference built in an oven at 45C.
The drift of my 34401A is about 1PPM per degree Celsius between 20 and 30 Celsius at the 10V DC range.



I received an email this morning that the USB-RS232 adapters will be delivered this afternoon, I will be waiting like a dog behind the mailbox.  :-DD

Kind regards,
Bram

HighVoltage:
My old RS232 to USB adapter will not work with your software, not sure why.
I have ordered a new one that should arrive soon.

beanflying:

--- Quote from: HighVoltage on June 16, 2021, 10:33:07 am ---My old RS232 to USB adapter will not work with your software, not sure why.
I have ordered a new one that should arrive soon.

--- End quote ---

I was running mine on 7 bits and Even parity on the 34401A if it helps same settings on the software.

mnementh:

--- Quote from: blackdog on June 16, 2021, 08:30:10 am ---...I received an email this morning that the USB-RS232 adapters will be delivered this afternoon, I will be waiting like a dog behind the mailbox.  :-DD

Kind regards,
Bram
--- End quote ---



We all know that feeling all too well. ;)

mnem
 :-DMM

blackdog:
Hi,

Yes, the USB to RS232 adapters have arrived!
I was able to use the old RS232 Null modem cable from the Symantec Firewalls I had bought over 15 years ago, so the cables are now long enough, to be connected normally.

The screenshot shows that now my HP6632 Power Supply is connected and the three graphs on the right side are from top to bottom the Voltage, Current and the bottom one the power supplied to my Dummy Resistor.
The other graph on the lower left is still the measurement of the 34401A DMM.



This is a picture of the measurement setup, the Heatkit Dummy Resistor is set to 8 Ohms and is connected to the black box that is on top of the Heatkit resistor.
This black box is 4-wire, so sensing was used to compensate for wiring losses.


The 34401 is also visible in this picture, just not connected properly for the smallest possible Seeback voltage, but that is not important for now.

Nx-1997
I am really happy with your software and will explore both packages further.
One more note, this computer only sees about 2% extra processor load when both programs are running.
The system is an i7 860(2.8GHz) and 12GB memory, W7 64Bit. (DELL Precision T1500)

So there is still plenty of processor power left for other measurements!  :-+

Regards,
Bram

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