Tenma 72-9380A
Revision as of 13:16, 30 December 2014 by Uwe Hermann (talk | contribs)
 | |
| Status | in progress |
|---|---|
| Counts | 40000 |
| 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 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:
PCB front
PCB back
MCU with sticker
MCU without sticker
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.