FAQ - MassHunter Tune Evaluation Error
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If a 5973N MSD is operated under MassHunter (tested under Rev. B.07.06), an error message occurs as soon as the Tune Evaluation command is executed from the TUNE menu. The process aborts after a few seconds and a warning message appears indicating an unknown error, while <unknown command "getpressure"> is output in the status line. The error is due to the fact that no getpressure command exists yet in the firmware of the 5973 MSD.
The error message can be easily fixed by checking if the command is present and loaded before executing it. This approach makes a modification universally valid and works equally with all MSD types. For an appropriate modification, the macro file Chktune_MH.mac in the directory C:\gcms\msexe is opened with Notepad. A search for the keyword msgForlinePress2 should find it in line 1385 under the macro command COInit. The msgForlinePress2 macro is now enclosed in an IF...ENDIF clause so that it is only executed when a getpressure command is loaded (see figure):
if check("command","getpressure")=1
endifmsgforelinepress2 1
Before changing or overwriting the original file, it is recommended to create a backup copy. To save the changes, however, administrator rights are mandatory from Windows 7. To do this, press Start or <Windows Logo> key, enter notepad in the lower search field, right-click on notepad.exe and select Run as administrator. Under the menu item File|Open or key <Ctrl + O> open the file selection window, select the display all files *.* in the dropdown list and navigate to the Chktune_MH.mac file. No restart of MassHunter is required after the change. The macro is loaded only when needed and the Tune Evaluation command should work as intended.
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