Author Topic: RIGOL DG1022 PROBLEM. help me  (Read 7606 times)

0 Members and 1 Guest are viewing this topic.

Offline hugos31

  • Contributor
  • Posts: 49
RIGOL DG1022 PROBLEM. help me
« on: May 25, 2014, 10:20:21 pm »
hello friends. accidentally; 24vdc introduced in CH1. currently; (channel 1).  not emit signal. only sale-15v dc  ..,,,,,,,,,,,,I keep track of the output circuit (channel 1) I found chip output signal (8-pin smd) with aluminum heatsink, id code cleared (scraped),,,, Please i need  code? for reeplazar
« Last Edit: May 25, 2014, 10:34:46 pm by hugos31 »
 

Offline hugos31

  • Contributor
  • Posts: 49
Re: RIGOL DG1022 PROBLEM.
« Reply #1 on: May 25, 2014, 10:21:22 pm »
 
« Last Edit: May 25, 2014, 10:27:31 pm by hugos31 »
 

Offline c4757p

  • Super Contributor
  • ***
  • Posts: 7805
  • Country: us
  • adieu
Re: RIGOL DG1022 PROBLEM.
« Reply #2 on: May 25, 2014, 10:24:45 pm »
We know what the front panel looks like - take a picture of the circuit around the chip!

It's probably just a high output current, somewhat high speed, high slew rate op amp. Check how it's connected. You might be able to substitute without knowing the part number.
No longer active here - try the IRC channel if you just can't be without me :)
 

Offline hugos31

  • Contributor
  • Posts: 49
Re: RIGOL DG1022 PROBLEM.
« Reply #3 on: May 25, 2014, 10:29:32 pm »
     id code cleared (scraped),,,,   test:  +15v  and ; -15v
« Last Edit: May 25, 2014, 10:39:40 pm by hugos31 »
 

Offline c4757p

  • Super Contributor
  • ***
  • Posts: 7805
  • Country: us
  • adieu
Re: RIGOL DG1022 PROBLEM.
« Reply #4 on: May 25, 2014, 10:35:25 pm »
Yeah, I'm pretty sure that's just an op amp. You're looking for something in the neighborhood of an LM7171, but with a thermal pad on the bottom.

Double-check that it's actually failed, though. Put it back in circuit, leave off the heat sink, set to a large output amplitude but do not terminate the output (the goal is to have zero current draw - nothing through the attenuators, as there would be at small amplitude, and nothing out the BNC - in which case it shouldn't need the sink), at low frequency. Probe the inputs and see if it behaves like an op amp.
« Last Edit: May 25, 2014, 10:37:16 pm by c4757p »
No longer active here - try the IRC channel if you just can't be without me :)
 

Offline hugos31

  • Contributor
  • Posts: 49
Re: RIGOL DG1022 PROBLEM. help me
« Reply #5 on: May 25, 2014, 10:37:58 pm »
  :-+ .  ok  I test  lm7171
 

Offline c4757p

  • Super Contributor
  • ***
  • Posts: 7805
  • Country: us
  • adieu
Re: RIGOL DG1022 PROBLEM. help me
« Reply #6 on: May 25, 2014, 10:39:32 pm »
No, please don't actually use an LM7171 - I said to find something with a thermal pad. That's just a bit too much heat for a 7171 (which is not available in a high power package).
No longer active here - try the IRC channel if you just can't be without me :)
 

Offline hugos31

  • Contributor
  • Posts: 49
 

Offline kc9qvl

  • Regular Contributor
  • *
  • Posts: 148
  • Country: us
Re: RIGOL DG1022 PROBLEM. help me
« Reply #8 on: May 25, 2014, 11:41:52 pm »
OPA541  ???.  Please review the datasheet you posted.
 

Offline hugos31

  • Contributor
  • Posts: 49
Re: RIGOL DG1022 PROBLEM. help me
« Reply #9 on: May 25, 2014, 11:59:59 pm »
OPA551  https://www.futurlec.com/Linear/OPA552UA.shtml   :-//   +- 30v  is problema,,,,,,,,,,,,,can be   opa454........http://www.ti.com/lit/ds/symlink/opa454.pdf
« Last Edit: May 26, 2014, 12:25:58 am by hugos31 »
 

Offline kc9qvl

  • Regular Contributor
  • *
  • Posts: 148
  • Country: us
Re: RIGOL DG1022 PROBLEM. help me
« Reply #10 on: May 26, 2014, 12:34:57 am »
Compare the slew rate and gain bandwidth of the opa541 or 454 to the lm7172. The opa541 is not even the correct package.


Have you tested the opamp yet?
« Last Edit: May 26, 2014, 12:38:09 am by kc9qvl »
 

Offline hugos31

  • Contributor
  • Posts: 49
Re: RIGOL DG1022 PROBLEM. help me
« Reply #11 on: August 12, 2014, 10:48:47 am »
:-//
 

Offline rf-loop

  • Super Contributor
  • ***
  • Posts: 3359
  • Country: cn
  • Born with DLL21 in hand
Re: RIGOL DG1022 PROBLEM. help me
« Reply #12 on: August 12, 2014, 01:09:25 pm »
:-//

How difficult is is ask from Rigol? They perhaps have today some kind of customer care and service help?

« Last Edit: August 12, 2014, 01:15:56 pm by rf-loop »
If practice and theory is not equal it tells that used application of theory is wrong or the theory itself is wrong.
-
Harmony OS
 

Offline slowolitus

  • Newbie
  • Posts: 4
  • Country: de
Re: RIGOL DG1022 PROBLEM. help me
« Reply #13 on: May 29, 2018, 03:16:43 pm »
THS3095 is the original IC
 
The following users thanked this post: bingo600, mcinque, tivoi

Offline Gandalf_Sr

  • Super Contributor
  • ***
  • Posts: 1747
  • Country: us
Re: RIGOL DG1022 PROBLEM. help me
« Reply #14 on: May 31, 2018, 10:22:24 am »
I wonder if hugos31 has reeplazared the OpAmp yet.
If at first you don't succeed, get a bigger hammer
 

Offline azemati

  • Contributor
  • Posts: 12
  • Country: ae
Re: RIGOL DG1022 PROBLEM. help me
« Reply #15 on: February 15, 2020, 08:25:50 am »
Hello everybody
There is an inductor in output section of DG1022, it has been crashed, is anyone know how the value is?
https://imgur.com/gallery/DzgQTzB
« Last Edit: February 15, 2020, 08:57:39 am by azemati »
 

Offline Dacke

  • Regular Contributor
  • *
  • Posts: 76
  • Country: us
Re: RIGOL DG1022 PROBLEM. help me
« Reply #16 on: February 15, 2020, 12:58:25 pm »
Hello everybody
There is an inductor in output section of DG1022, it has been crashed, is anyone know how the value is?
https://imgur.com/gallery/DzgQTzB

It's a common mode choke and the exact replacement part number is ACM4532-901-2P.   A while back,  I blew the same choke in mine as well.  Since it was difficult to find that exact one at the time,  I used a close replacement from Digikey  -  https://www.digikey.com/product-detail/en/wurth-electronics-inc/744235601/732-4221-1-ND/3672769  -  It has been working fine ever since.
 

Offline azemati

  • Contributor
  • Posts: 12
  • Country: ae
Re: RIGOL DG1022 PROBLEM. help me
« Reply #17 on: February 16, 2020, 06:43:10 pm »
My friend,
appreciate 🙏
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf