Tenma 72-7750¶


Status	supported
Source code	serial-dmm
Counts	6000
IEC 61010-1	CAT III (1000V) / CAT IV (600V)
Connectivity	RS232 / USB
Measurements	voltage, current, resistance, capacitance, frequency, duty cycle, temperature, diode, continuity
Features	autorange, true-rms, data hold, relative, backlight
Website	mcmelectronics.com

The Tenma 72-7750 is a 6000 count CAT III (1000V) / CAT IV (600V) handheld digital multimeter with RS232 or USB connectivity.

It is a rebadged UNI-T UT60G.

See Tenma 72-7750/Info for more details (such as lsusb -v output) about the device.

Hardware¶

Multimeter IC: Cyrustek ES51986A (markings: "cyrustek.com.tw ES51986A 1216-GH91")
Low-power JFET dual operational amplifiers: ST TL062C (markings: "ST 062C eZ048") (datasheet)
Crystal: 4MHz (markings: "3.999")
Fuses: F500mA/250V, F10A/H250V (both are glass fuses)
Random PCB silkscreen markings: "TRMS", "2008.12.10", "0604026"