Software for DMM


Looking for software for a Uni-T DMM (specifically a UT71D) that supports a Mac (OSX), and while Windows is supported, OSX isn’t, although it might work in Wine, Parallels, VMware Fusion, etc…

See also


Threads for UltraDMM




Now UltraDMM doesn’t support the UT71D (although it does support the UT61E), because the UT71D has a Cyrustek ES51966 (see Re: UltraDMM Software Project), even though support for the E51966, E51997F chipsets was added (see Re: UltraDMM Software Project), because the serial output is handled externally to the ES51966 (is that actually correct??).


Now, from Re: UltraDMM Software Project it is stated that VoltCraft DM920/940/960 are rebadged UT71x DMMs. QtDMM supports VC-940. Now the chances are that the VC-940 isn’t a rebadged UT71D… let’s see… according to Voltcraft VC-940, it is a rebadged UT-71E. The UT71D is actually a VC-960 according to UNI-T UT71x series (this page includes the protocol). However, the VC-940 has the ES51966F, which is the same, or almost the same as the UT71D, and they seem to share the same protocol, according to Voltcraft VC-940.

I found that QtDMM (0.8.12) crashed on OS X 10.8.5. Then it would not allow me to install version 0.8.11 as a newer version existed.  Obviously, there was no uninstall option for the 0.8.12 installer. I gave up for the night at that point.

Accessories for the UT71

  • UT-D07A (BlueTooth adapter)
  • UT-D04 (USB cable)
  • UT-D02 (Serial cable) – only for UT61(E)


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