Electronics > Repair
Advantest R6246 "Repair" and Teardown
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wichers:
Hi,

May I ask what your GPIB read speed is? I'm using an AR488 (prologix compatible) adapter. As mine is very slow (reading at 1 line per second), I'm trying to find out what the problem is.. I'm currently double sweeping in advance and I'm picking up the samples later, the sweep itself is very fast, fetching the measurements isn't.

This is my python R624X instrument wrapper:
https://github.com/wichers/pymeasure/blob/master/pymeasure/instruments/advantest/advantestR624X.py

And here I'm using the wrapper in a small example:
https://github.com/wichers/pymeasure/blob/master/examples/Current-Voltage%20Measurements/iv_advantest.py

Fetching the measurements (this seems fastest) is basically done using:

--- Code: ---instrument.write('nub_01?')
count = instrument.read()
instrument.write(rmm_01?')
for i in range(0, count):
    measurement = instrument.read()

--- End code ---

Kind regards,
Alexander
42Khz:
Hi Alexander,

Congratz on your score and thanks for dumping the firmware! I'll do the same for mine when I get around to it.

Unfortunately I can't really help you: I ran my sweep in MATLAB. The SMU was reprogrammed and data was collected one point at a time and quite slowly at that. Maybe half a second per point?
I'll probably pick this back up when I have some free time again in a month or so to look into running sweeps on the SMU itself.

Regards, Jeroen
aronake:
I happened to buy a R6246 very cheap. Fascinating piece of equipment and Japanese 1990ies electronics design!
serg-el:
https://cloud.mail.ru/public/wugJ/ognyErGRf

Full information
aronake:

--- Quote from: serg-el on June 05, 2024, 05:58:45 am ---https://cloud.mail.ru/public/wugJ/ognyErGRf

Full information

--- End quote ---

Great collection of documents! Thanks!
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