Author Topic: Rigol RP1100D teardown  (Read 1511 times)

0 Members and 1 Guest are viewing this topic.

Offline patriot

  • Newbie
  • Posts: 3
  • Country: cz
Rigol RP1100D teardown
« on: December 19, 2017, 03:57:35 am »
Hi,
I saw here a Pintek DP-100 100Mhz differential probe teardown.
From outside my Rigol RP1100D looks absolutely identical so I was wondering if it is the same probe.
I think my Rigol probe is really made by Pintek. But I have probably newer revision of internal electronic.
On my PCB is written revision DP-100-E1 while Pintek reviewed here has written DP100-D. My Rigol probe has board based on SMD devices, older Pintek here through hole devices.
My Rigol probe has well shielded case made by conductive paint while Pintek probe is missing this feature. On other hand Rigol probe is missing battery slot and rely only on external DC power adapter.
Unfortunately Rigol probe has wiped off IC naming. What bullshit practice - especially from Chinese company. It is so ironic ...
So just enjoy pics if you want ...
By the way, my initial purpose to look inside this probe was make ZERO offset of this probe (is it 0.7V now on x100 range). But there is lot of trimmers, so not easy without function description. If somebody know how to proceed this please let me know.

Updated: Rigol RP1100D could be in fact rebranded Pintech DP-100, as Tautech stated below.

« Last Edit: December 20, 2017, 01:29:31 am by patriot »
 

Offline JPortici

  • Super Contributor
  • ***
  • Posts: 2215
  • Country: it
Re: Rigol RP1100D teardown
« Reply #1 on: December 19, 2017, 04:48:48 am »
all the trimmers are labelled.. it shouldn't be too hard

i.e.: VR34 has x100 DC on it, i would bet it adjusts the DC offset at x100 gain
VR35 instead has x1000 G, my gut tells me it's gain adjustment at x1000
 

Offline tautech

  • Super Contributor
  • ***
  • Posts: 12705
  • Country: nz
  • NZ Siglent Distributor
    • Taupaki Technologies Ltd.
Re: Rigol RP1100D teardown
« Reply #2 on: December 19, 2017, 05:29:57 am »
Let's be clear about differential probe branding from this part of the world.
It could be Pintek (China) or Pintech (Taiwan).

Pintech were first in the market and then closely copied by Pintek.
It is not at all surprising today that Pintech would scrub IC's to protect their IP.

From the enclosure form factor it sure looks like a Pintech.
Avid Rabid Hobbyist
 

Offline patriot

  • Newbie
  • Posts: 3
  • Country: cz
Re: Rigol RP1100D teardown
« Reply #3 on: December 20, 2017, 12:56:38 am »
all the trimmers are labelled.. it shouldn't be too hard

i.e.: VR34 has x100 DC on it, i would bet it adjusts the DC offset at x100 gain
VR35 instead has x1000 G, my gut tells me it's gain adjustment at x1000

Right. But there is for example x100 DC and x200 DC but not x500 DC or x1000 DC. So it can be somehow shared. In other words maybe I will change bias on other range or maybe even other parameters can be affected and need to be readjusted at same time. I dont know which parameters should I take care. Maybe it is simple. Maybe not. Without schematic or calibration guide it is too risky for me.
« Last Edit: December 20, 2017, 01:00:23 am by patriot »
 

Offline patriot

  • Newbie
  • Posts: 3
  • Country: cz
Re: Rigol RP1100D teardown
« Reply #4 on: December 20, 2017, 01:26:44 am »
It could be Pintek (China) or Pintech (Taiwan).
From the enclosure form factor it sure looks like a Pintech.

You are probably right - on back is written "Made in Taiwan".  And I found DP100 on Pintech web which looks identical :-+

By the way the situation with current probes is same?
I think my Rigol RP1002C looks identical to Pintech PT710-C. With exactly same label "Made in Taiwan".
Maybe I will add some internal photo later.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf