Will these corrections only affect the display or will they also affect other measurements?
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Sorted it out like. I put 150 and the voltage more or less began to coincide. The measurements did not seem to have changed either.
In the HilandM644 an extended Frequency and crystal measurements carried out.
Hiland has two menu items for frequency measurements - up to 2 MHz and over 2 MHz. Both measurements are shown in the photo. So there are no problems with the software, you need to look at your diagram ...
Do you think it's possible or do you have the patience to explain that in other words so an ignorant (not knowledgeable) person like me could understand?
There's a chapter about the inductance measurement (also for the SamplingADC method) in Karl-Heinz' excellent documentation. And for the m-firmware you can find an explanation in inductance.c. It's boring physics. Or see any suitable physics book/text/webpage about inductance.
Still I cant get around to understand how Inductance is measure without an AC signal being use. I'm having problems understanding the concept
In the HilandM644 an extended Frequency and crystal measurements carried out.Hiland has two menu items for frequency measurements - up to 2 MHz and over 2 MHz. Both measurements are shown in the photo. So there are no problems with the software, you need to look at your diagram ...
Still I cant get around to understand how Inductance is measure without an AC signal being use.
I'm having problems understanding the concept
Can you try for a frequency above 50KHz, for example 55KHz,... please provide check result information between 55-100KHz.
Can you try for a frequency above 50KHz, for example 55KHz,... please provide check result information between 55-100KHz.
See the results ...
pdf schematic is written in version 1.13k
pdf schematic is written in version 1.13kShow this pdf schematic or provide a link ...
Okay thanks Yuriy_K if it's like this then firmware "k" is not suitable for TC7 for Frequency Counter function, because TC7 does not have additional components that exist in hiland644 and the pdf schematic is written in version 1.13k
Okay thanks Yuriy_K if it's like this then firmware "k" is not suitable for TC7 for Frequency Counter function, because TC7 does not have additional components that exist in hiland644 and the pdf schematic is written in version 1.13k
I had a quick look at the issue. The precompiler directives for ATmega644 in GetFrequency.c are causing the 16:1 prescaler problem. When using an ATmega644 the "#if"s add the code for switching the external prescaler including auto-ranging. If the frequency is higher than a specific threshold the auto-ranging will enable the 16:1 prescaler. That's what you've noticed for higher frequencies, i.e. the first measurement is fine and after that the frequency is multiplied by 16. Adding another constant (e.g. USE_HFREQ) to the "#if" logic should fix the problem. I'll inform Karl-Heinz.
bffargo,What type of +5V regulator is installed on your M328 clone? Show T1-T7 hardware test results at 16MHz?
The test screens aren't numbered. I stitched them all together in order of display.
DMM1 DMM2
R1 680 s/b 680 706.8
R2 474K s/b 470K 474.6K
R3 680 s/b 680 706.2
R4 476K s/b 470K 475.8K
R5 680 s/b 680 706.2
R6 473K s/b 470K 473.8K
R7 8.7K s/b 10K 9.99K
R8 3.29K s/b 33K ??? 3.317K
R9 3.31K s/b 3.3K 3.331K
R10 27.1K s/b 27K 27.16K
R11 99K s/b 100K 99.2K
R12 9.98K s/b 10K 9.999K
R13 3.28K s/b 3.3K 3.324K
R14 558 s/b 560 584.0
R15 26.9K s/b 27K 26.95K
So I should just pull a trio of resistors as close to 470K as possible and between each other and replace R2/R4/R6 ?
Note the issue with R8 that comes off the 9V input to the transistor. It's an order of magnitude off; accd to the schematic posted here; or the schematic is wrong:
Was that just a one off build off the current branch you did for me?