Re: [AMMRL] installation of 2htx board on AVI with three channels

From: PLscientific <pavel_at_plscientific.se>
Date: Tue, 15 Jul 2025 12:43:05 -0700

Hi Andre,

Mike is absolutely right– "cf" and "expinstall" are crucial operations
after such changes.

I would also recommend checking if p90 for 2H is defined in “edprosol”
for your probe; the typical value is 100- 150 us _at_ 3 W.

Indeed, it is good to calibrate this value in the zg experiment; you may need to
use zg2h PP to make the correct routing for the 2H-TX amplifier. That will also
check if the amplifier in the 2H-TX board is functioning properly – it
frequently misbehaves (producing too low output power) and may also have a
floating fault (a fault in the output stage/bias).

Topshim 3D,1D for sucrose sample works just because only 1H channel is involved
for 90%H2O solvent

Regards,

P&L Scientific AB
Repair/customization of NMR probes and spectrometers
Electrophoretic NMR and custom NMR solution for electrochemistry

+46 736 220 672
Applied Physical Chemistry,KTH
Teknikringen 36,
100 44 Stockholm
Sweden
pavel_at_plscientific.se ( pavel_at_plscientific.se )
http://www.plscientific.se


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Received on Tue Jul 15 2025 - 12:54:51 MST

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