I am searching for some details about the programming interface for the Tenma 72-872072-8720 multimeter Clearly such an interface must exist because the supplied PC software has to communicate with the meter in order to function However this interface does not appear to be documented
I have located an Excel spreadsheet called 77-8720 protocol.xls It gives some values for the serial port parameters However the rest of the information is rather difficult to interpret It is also not clear to me whether this information is relevant to the RS-232RS-232 interface only Can anyone help
