Products > Test Equipment
DPO3000 Hacks
analogRF:
did you run SPC? That should take care of the dc offset. I think that's normal to happen. SPC is required after BW upgrade
darkstar49:
--- Quote from: Gregory on April 12, 2020, 10:49:29 am ---
--- Quote from: abyrvalg on April 02, 2018, 09:18:23 pm ---Back to the "ARMDEMO" thing: the parameter order was wrong, NumOfDays must be first. Somebody please verify:
--- Code: ---:PASSW INTEKRITY
:ARMDEMO 30,DontMakeTheWookieMad
or:
:ARMDEMO 30,"DontMakeTheWookieMad"
--- End code ---
--- End quote ---
This worked for me on a MDO4034-B scope!
Any ideas how to make it not expire in 30 days?
--- End quote ---
DPO4BND ? :popcorn:
VooDust:
--- Quote from: analogRF on August 28, 2020, 10:18:48 am ---did you run SPC? That should take care of the dc offset. I think that's normal to happen. SPC is required after BW upgrade
--- End quote ---
First, thanks a lot for explaining. I did not know what SPC was or when to use it. I warmed the oscilloscope up and tried it a few times, but it always failed :'( error log reported code 280 3 0 0, couldn't find any info about that.
However, I kept trying, turning off all other appliances in hopes to remove anything that could interfere with the process. Still failed, but, believe it or not, when I moved the oscilloscope to another room/power outlet, SPC succeeded! :popcorn:
I'm very happy, calibration is spot on! In retrospect, in the past it was off by some tiny amount of mV, too, which bothered me but I didn't know why that was or what I could do.
--- Quote from: BH3XON on July 26, 2019, 10:53:49 am ---See your reply, I executed SPC again, and it has been running for 4 hours, but it failed again.
Anyway, This at least proves that it has nothing to do with hacking , Maybe it is a device failure .
--- End quote ---
It's a year late but maybe this post is still of interest to you... :horse:
analogRF:
I have found (on other tek scopes, not this model here) SPC passing can be sensitive to room and device temperature.
I guess if the offset is too much SPC cannot compensate it and sometimes if the temperature is right the offset may come into a window that SPC can handle it. That's my guess...that's why SPC should be run frequently to keep the offset in a range that can be compensated.
But w.r.t. calibration, did you check the bandwidth? is it in fact >=500MHz?
tv84:
--- Quote from: smaultre on June 30, 2020, 05:05:32 pm ---:HWAccountant(....) -not work at all
--- End quote ---
If you mean that all other :HWAccountant commands don't work maybe it's because you have to be in manufacturer/factory mode for them to be accepted.
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