Use frequency correction from hdsdr not work correctly #110
Comments
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You are right, Thanks. |
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Hello, |
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In v1.01 https://github.com/ik1xpv/ExtIO_sddc/releases/tag/v1.01 I used a control in ExtIO dialog. |
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@ik1xpv think you need to go back to that solution! but: this does not explain this error with the 9.996MHZ beacon. |
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It's the green one?
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Hayati you are right. we have to do it in the ExtIO dialog. |
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@F4HTB : can you please reset and repeat the calibration? @ik1xpv : i suppose, that the samplerate error, which is not calibrated .. does produce additional error .. right? |
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Hi Hayati,
Yes you are right. The sample rate error, which is not calibrated,
produces additional error.
HF103 has a fixed xtal oscillator. To compensate for the reference error in
v1.01 I asked the User after writing the ppm error to restart HDSDR to used
the new
sample rate with the correction.
Oscar
…On Wed, Dec 23, 2020 at 7:47 PM hayati ayguen ***@***.***> wrote:
@F4HTB <https://github.com/F4HTB> : can you please reset and repeat the
calibration?
this time, please have the LO just 1 kHz away from the tune frequency,
whilst calibration!
and then report both frequencies and what frequency is reported before and
after doing AM sync.
then, after the calibration, have the LO multiple MHz away .. but tune to
the same frequency .. what synced Tune frequency is reported then?
@ik1xpv <https://github.com/ik1xpv> : i suppose, that the samplerate
error, which is not calibrated .. does produce additional error .. right?
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Hi Oscar, it's nice to have a possibility to calibrate with a screwdriver .. but that would require opening the case .. not so ideal (for me) |
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You are right. Somehow we will do it :-) |
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one problem of HDSDR is that it displays the raw sample rate like 63999999 which is a bit ugly on UI. If HDSDR can display it wrapped as 64M, it will be great. I think we may need to add back the logic to calibrate ADC rate. |
…rk in progress) * calibration setting (in registry of hdsdr) modifies reported samplerates see ik1xpv#110 calibration settings has to be entered manually in the registry Computer\HKEY_CURRENT_USER\Software\HDSDR\ExtIO_SDDC.dll\012_Value * calibration of hdsdr can be used to determine the ppm value .. but it must be resetted, when entering this value in the registry - whilst hdsdr is already terminated * added new extio function 'ExtIoSrateSelText()' to display a readable samplerate in next hdsdr release * added double variants for several extio functions * deactivated unnecessary extio Tune functions Signed-off-by: hayati ayguen <[email protected]>
…rk in progress) * calibration setting (in registry of hdsdr) modifies reported samplerates see ik1xpv#110 calibration settings has to be entered manually in the registry Computer\HKEY_CURRENT_USER\Software\HDSDR\ExtIO_SDDC.dll\012_Value * calibration of hdsdr can be used to determine the ppm value .. but it must be resetted, when entering this value in the registry - whilst hdsdr is already terminated * added new extio function 'ExtIoSrateSelText()' to display a readable samplerate in next hdsdr release * added double variants for several extio functions * deactivated unnecessary extio Tune functions Signed-off-by: hayati ayguen <[email protected]>
…rk in progress) * calibration setting (in registry of hdsdr) modifies reported samplerates see ik1xpv#110 calibration settings has to be entered manually in the registry Computer\HKEY_CURRENT_USER\Software\HDSDR\ExtIO_SDDC.dll\012_Value * calibration of hdsdr can be used to determine the ppm value .. but it must be resetted, when entering this value in the registry - whilst hdsdr is already terminated * added new extio function 'ExtIoSrateSelText()' to display a readable samplerate in next hdsdr release * added double variants for several extio functions * deactivated unnecessary extio Tune functions Signed-off-by: hayati ayguen <[email protected]>
…rk in progress) (#143) * calibration setting (in registry of hdsdr) modifies reported samplerates see #110 calibration settings has to be entered manually in the registry Computer\HKEY_CURRENT_USER\Software\HDSDR\ExtIO_SDDC.dll\012_Value * calibration of hdsdr can be used to determine the ppm value .. but it must be resetted, when entering this value in the registry - whilst hdsdr is already terminated * added new extio function 'ExtIoSrateSelText()' to display a readable samplerate in next hdsdr release * added double variants for several extio functions * deactivated unnecessary extio Tune functions Signed-off-by: hayati ayguen <[email protected]>
Hello,
Receiver: RX888
Software: HDSDR v2.80 installer with OmniRig V2 support. (March 19, 2020)
DLL: ExtIO_sddc_v1.1RC1.zip from https://github.com/ik1xpv/ExtIO_sddc/releases/download/v1.1/ExtIO_sddc_v1.1RC1.zip
OS: Windows 10 1909
I have try to set the ppm correction compared to the 9.996MHZ beacon.
I have set the signal to hear on 1khz BF.
The frequency in hdsdr is 9994331hz.
When i go to calibration settings, i have :
Current Tune Frequency [hz] 9994331,00
Correct Tune Frequency: 9995000
When i clic on "Calculate" i get :
+66,94 for the ppm
Tune at 9995000hz
But the BF signal appear no to 1khz but at 1350hz.
Maybe I'm doing it wrong but I followed a youtube video to remind myself how to do it and it doesn't have the same effect.
Many Thanks.
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