Difference between revisions of "Tenma 72-7750"
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== Protocol == | == Protocol == | ||
See [[ | See [[Multimeter ICs/Cyrustek ES519xx]] for the DMM IC protocol. Depending on the cable, additional transport-specific decoding is needed, though. | ||
== Resources == | == Resources == | ||
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* [http://www.farnell.com/datasheets/70028.pdf Manual] | * [http://www.farnell.com/datasheets/70028.pdf Manual] | ||
* [http://www.mcmelectronics.com/content/ProductData/downloads/72-7750-Software.zip Vendor software] | * [http://www.mcmelectronics.com/content/ProductData/downloads/72-7750-Software.zip Vendor software] | ||
* [http://www.swharden.com/blog/2013-04-17-tenma-72-7750-multimeter-excellent-for-rf-engineering/ swharden.com: Tenma 72-7750 Multimeter Excellent for RF Engineering] (review) | |||
[[Category:Device]] | [[Category:Device]] | ||
[[Category:Multimeter]] | [[Category:Multimeter]] | ||
[[Category:In progress]] | [[Category:In progress]] | ||
Revision as of 22:05, 3 January 2014
 | |
| Status | in progress |
|---|---|
| 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"
RS232 cable:
USB cable:
Photos
Multimeter:
PCB, top
PCB, bottom
RS232 cable:
See Device cables#UNI-T_UT-D02.
USB cable:
See Device cables#UNI-T_UT-D04.
Protocol
See Multimeter ICs/Cyrustek ES519xx for the DMM IC protocol. Depending on the cable, additional transport-specific decoding is needed, though.