Marvin Test Solutions provides a dynamic link library that provides a compatibility layer for users that choose to replace their Signametrics SM204x/SM2060 boards with the GX2065.
The compatibility driver attempts to approximate the functionality of the Signametrics cards by routing Signametrics API commands to similar GX2065 functions. The cards each have distinct features and modes. Check Appendix C - Signametrics DMM Function Comparisons for a discussion of the differences.
Signametrics SM204x/SM2060 boards use the sm204032.dll or SM2060.dll in conjunction with the Marvin Test Solutions sm204032.dll. The Marvin Test Solutions sm204032.dll and SM2060.dll are installed in the GXDMM folder while the Signametrics sm204032.dll/SM2060.dll is installed in the Windows System32 folder on 32-bit Windows, or Windows SysWOW64 folder on 64-bit Windows. You can rename the Signametrics DLL in that folder before coping the Marvin Test Solutions DLL one. Appendix B details the supported SM204x and SM2060 functions.
In order for the Gx2065 to be fully compatible with the SM204x family the user needs to modify the calibration file provided by Signametrics as follows:
1. Locate the calibration file provided by Signametrics, the calibration file name has the following format “Sm40cal.dat”.
2. Open the calibration file with any text editor (e.g. notepad).
3. Append to the end of the file “Power Line Cycles=” followed by the power line cycles value, e.g. if in the USA add the following line: “Power Line Cycles=50”.
4. Save and close the file.