Tenma 72-9380A

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Tenma 72-9380A
Tenma 72-9380A.png
Status supported
Source code serial-dmm
Counts 40000/4000
IEC 61010-1 CAT III (1000V) / CAT IV (600V)
Connectivity RS232 / USB
Measurements voltage, current, power, resistance, capacitance, frequency, temperature, duty cycle, diode, continuity
Features autorange, true-rms, data hold, relative, backlight
Website mcmelectronics.com

The Tenma 72-9380A is a 40000/4000 count CAT III (1000V) / CAT IV (600V) handheld digital multimeter with RS232 or USB connectivity.

It is a rebadged UNI-T UT71-E.

See UNI-T UT71x series for information common to all devices in this series.

Hardware

Multimeter:

  • LSD0007 (possibly TI MSP430 MCU?)
  • TI MSP430FE425 microcontroller
  • Cyrustek ES51966 DMM chip
  • Holtek HT1621 LCD driver
  • PCB markings: The silkscreen reads "71E (1KV FUSE) V20051120-9", but an additional "E" model indication is apparently added manually by UNI-T using a sticker.

RS232 cable:

USB cable:

Photos

Multimeter:

RS232 cable:

See Device cables#UNI-T_UT-D02.

USB cable:

See Device cables#UNI-T_UT-D04.

Protocol

See UNI-T UT71x series#Protocol.

Resources