Channel A of 5243A shows wrong waveform

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egonotto
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Joined: Thu Mar 12, 2015 12:42 am

Channel A of 5243A shows wrong waveform

Post by egonotto » Sat Sep 02, 2017 1:17 am

channel_A_problem.jpg
The some waveform but channel A is wrong
Hello,

I take a 1kHz waveform from the generator of my PicoScope 5243A and use a BNC tee to connect the generator to channel A and channel B of the PicoScope 5243A

The waveform of channel A is wrong. The low frequencies are damped.

Best regards
egonotto

PS: Sorry for first incomplete post.
Attachments
channel_A_problem.psdata
The some waveform but channel A is wrong
(9.78 KiB) Downloaded 127 times

egonotto
Newbie
Posts: 0
Joined: Thu Mar 12, 2015 12:42 am

Re: Channel A of 5243A shows wrong waveform

Post by egonotto » Sat Sep 02, 2017 6:52 pm

Hello,

I found whats matter.

The contact from center pin of connector channel A to PCB has almost 300 kOhm.

Best regards

egonotto

Gerry
PICO STAFF
PICO STAFF
Posts: 276
Joined: Mon Aug 11, 2014 11:14 am

Re: Channel A of 5243A shows wrong waveform

Post by Gerry » Mon Sep 04, 2017 11:40 am

Hi egonotto,

I just noticed your answer here (I replied to your other post).

If you want your PicoScope repaired you can send us the serial number for it, along with your full postal address, and we will start the returns process for you.

Regards,

Gerry
Gerry
Technical Specialist

egonotto
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Posts: 0
Joined: Thu Mar 12, 2015 12:42 am

Re: Channel A of 5243A shows wrong waveform

Post by egonotto » Tue Sep 05, 2017 12:31 am

Hi Gerry,

thanks.

I have fixed the problem with a soldering iron.
Now it looks fine (I reset colors to default).

Best regards
egonotto
Attachments
channel_A_problem_solved.jpg
Now looks fine

Martyn
Site Admin
Site Admin
Posts: 3330
Joined: Fri Jun 10, 2011 8:15 am
Location: St. Neots

Re: Channel A of 5243A shows wrong waveform

Post by Martyn » Tue Sep 05, 2017 5:55 am

We do not recommend repairing the scope yourself, once opened it can no longer be guaranteed to meet published specifications, and any subsequent issues would not be covered by the 5 year warranty :(

However in this case it looks as if the repair has been effective, and you have a fully working scope :)
Martyn
Technical Support Manager

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