You are right, Issue has been fixedqu1ck wrote:Judging by the picture you have C1 and C4 mixed up. The bigger one (0.1 uF) should be on the right.
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- Fri Dec 02, 2016 4:23 pm
- Forum: DSO Shell
- Topic: Calibration using C3 and C5 not working
- Replies: 5
- Views: 9741
Re: Calibration using C3 and C5 not working
.- Sat Nov 26, 2016 11:56 pm
- Forum: DSO Shell
- Topic: Calibration using C3 and C5 not working
- Replies: 5
- Views: 9741
Re: Calibration using C3 and C5 not working
There might be gain error for the amplifiers. Please check resistors R5, R6, R13, R14, and R15. I've checked all resistors again. R5, R6 is 620k when soldered on the analog board. I've also measured it after desoldering them it those are 1k. Resistor values Measured after soldering R27 : 120 R26 : ...
- Thu Nov 24, 2016 4:51 pm
- Forum: DSO Shell
- Topic: Calibration using C3 and C5 not working
- Replies: 5
- Views: 9741
Calibration using C3 and C5 not working
I've followed instructions and checked all voltages for DSO Shell 15001 kit. I am unable to make a perfect square wave using trimmer c3 and c5 adjustment. Also noticed that test signal voltage level is very high. See the attached picture. Test signal 0.1v appears as 9v signal. When I change test sig...