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Products => Test Equipment => Topic started by: Khaveer on February 17, 2022, 08:49:35 pm

Title: Bandwidth upgrade for Tektronix DPO2004B?
Post by: Khaveer on February 17, 2022, 08:49:35 pm

Hello. I've purchased an extremely cheap NOS Tektronix DPO2004B scope. I know that there are better options out there, but it was only a bit more expensive than a Rigol 1054z and I prefer the Tek UI.

Of course the first thing that came to my mind was to look for ways to unlock all the extra stuff. I found the thread about modules, but I couldn't find any verified information about the bandwidth. Are there any verified ways to upgrade it?

Title: Re: Bandwidth upgrade for Tektronix DPO2004B?
Post by: Drirr on February 18, 2022, 07:32:05 pm

Hi,
Bandwidth is set by hardware. There is no way to upgrade bandwidth by software.
internal photos: https://photos.app.goo.gl/U5wS5u7NrvdiB2XB8

Title: Re: Bandwidth upgrade for Tektronix DPO2004B?
Post by: Khaveer on February 18, 2022, 08:21:37 pm

Quote from: Drirr on February 18, 2022, 07:32:05 pm

Hi,
Bandwidth is set by hardware. There is no way to upgrade bandwidth by software.
internal photos: https://photos.app.goo.gl/U5wS5u7NrvdiB2XB8 (https://photos.app.goo.gl/U5wS5u7NrvdiB2XB8)

Thanks for the reply, but I'm not sure about that. I've disassembled the firmware and it turns out that there's a way to upgrade the model number like in the DPO/MSO3000 series: https://www.eevblog.com/forum/testgear/dpo3000-hacks/ (https://www.eevblog.com/forum/testgear/dpo3000-hacks/)

I was able to change it to 2024B and it passed the SPC. The 2ns timebase is now present. Now the issue is that I have to get a signal gen that's capable of producing 200 MHz to verify if it really works.

The commands I used were:

Code: [Select]

:PASSWORD INTEKRITY
:SETMODELID 6

Title: Re: Bandwidth upgrade for Tektronix DPO2004B?
Post by: Drirr on February 23, 2022, 07:15:15 pm

Info about bandwidth modification is from our local TEK distribution. I believe that the hardware modification is necessary. Would be nice to check bandwidth.
I am also owner of TEK2k , crippled to 70MHz. 
I can try to modify SW and check by HP83630A
Jesteś daleko od Brna?

Title: Re: Bandwidth upgrade for Tektronix DPO2004B?
Post by: MacIntoshCZ on February 23, 2022, 07:19:22 pm

Drirr90?

Title: Re: Bandwidth upgrade for Tektronix DPO2004B?
Post by: Hydrawerk on February 23, 2022, 08:21:08 pm

Quote from: MacIntoshCZ on February 23, 2022, 07:19:22 pm

Drirr90?

Probably yes.