One of the more advanced digital multimeters in the MM series, the Martindale MM64 performs all basic electrical checks as well as specialist tests such as capacitance and temperature.
This digital multimeter can be used to test AC/DC voltage to 600V, resistance to 20MΩ, AC/DC current to 200mA, frequency to 40kHz, capacitance to 20mF and temperature up to 750°C. It also includes dedicated continuity and diode testing functions.
With the built-in MIN/MAX mode, the maximum or minimum values taken over a testing period can be displayed. This multimeter is also optimised for use in darkened conditions, with a backlit display.
| DC Voltage | |
| Ranges | 200mV, 2000mV, 20V, 200V, 600V |
| Resolution | 200mV, 2000mV, 20V, 200V, 600V |
| Accuracy | ±(0.5% of rdg + 1 digit) |
| Input Impedance | 10MΩ |
| Overload Protection | 600V DC or AC RMS for 15 seconds on 200mV range |
| AC Voltage (50 to 500Hz) | |
| Ranges | 200mV, 2000mV, 20V, 200V, 600V |
| Resolution | 0.1mV, 0.001V, 0.01V, 0.1V, 1V |
| Accuracy | 200mV to 20V ranges: ±(1.2% of rdg + 4 digits) 200V to 600V range: ±(2.0% of rdg + 4 digits) |
| Input Impedance | 10MΩ |
| Overload Protection | 600V DC or AC RMS. 600V DC or AC RMS for 15 seconds on 200mV range |
| DC Current | |
| Ranges | 200μA, 20mA, 200mA |
| Resolution | 0.1μA, 0.01mA, 0.1mA |
| Accuracy | ±(1.0% of rdg + 1 digit) |
| Input Protection | 0.25A/500V fast blow ceramic fuse |
| AC Current (50 to 500Hz) | |
| Ranges | 200μA, 20mA, 200mA |
| Resolution | 0.1μA, 0.01mA, 0.1mA |
| Accuracy | ±(1.5% of rdg + 4 digits) |
| Input Protection | 0.25A/500V fast blow ceramic fuse |
| Resistance | |
| Ranges | 200Ω, 2kΩ, 200kΩ, 20MΩ |
| Resolution | 0.1, 0.001kΩ, 0.1kΩ, 0.01MΩ |
| Accuracy | 200Ω to 200kΩ ranges: ±(1.0% of rdg + 4 digits) 20MΩ range: ±(2.0% of rdg + 4 digits) |
| Open Circuit Voltage | 0.3V DC (3.0V DC on 200Ω range) |
| Overload Protection | 500V DC or AC RMS |
| Capacitance | |
| Ranges | 200μF, 2mF, 20mF |
| Resolution | 0.1μF, 0.001mF, 0.01mF |
| Accuracy | ±(4.0% of rdg + 10 digits) |
| Test Frequency | 21Hz |
| Test Voltage | <3.0V |
| Input Protection | 0.25A/500V fast blow ceramic fuse |
| Frequency (Autoranging) | |
| Ranges | 2kHz, 20kHz, 40kHz |
| Resolution | 0.001kHz, 0.01kHz, 0.1kHz |
| Accuracy | ±(0.1% of rdg + 3 digits) |
| Minimum Input | 10Hz |
| Input Sensitivity | 3.5V RMS minimum |
| Overload Protection | 500V DC or AC RMS |
| Temperature | |
| Range | 200 to 1400°F |
