Difference between revisions of "V&A VA18B"
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[[File:Mastech va18b device front.jpg|thumb|right|Mastech VA18B]] | |||
The [http://www.mastech.com.cn/html/en/products-va18b.htm Mastech VA18B] a.k.a. '''V&A VA18B''' (V&A is a [http://www.mastech.com.cn/html/en/about-us.htm brand of Mastech]) is a CAT II (1000V) handheld digital multimeter with USB connectivity. | The [http://www.mastech.com.cn/html/en/products-va18b.htm Mastech VA18B] a.k.a. '''V&A VA18B''' (V&A is a [http://www.mastech.com.cn/html/en/about-us.htm brand of Mastech]) is a CAT II (1000V) handheld digital multimeter with USB connectivity. | ||
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== Hardware == | == Hardware == | ||
Multimeter: | |||
* ... | |||
USB cable: | |||
* Prolific PL2303HX YR0903A | |||
* 12MHz crystal | |||
== Photos == | == Photos == | ||
<gallery> | |||
File:Mastech va18b device front.jpg|<small>Device, front</small> | |||
File:Mastech va18b pcb front.jpg|<small>PCB, front</small> | |||
File:Mastech va18b pcb back.jpg|<small>PCB, back</small> | |||
File:Mastech va18b usb cable.jpg|<small>USB cable</small> | |||
File:Mastech va18b usb cable pcb front.jpg|<small>USB cable PCB, front</small> | |||
File:Mastech va18b usb cable pcb back.jpg|<small>USB cable PCB, back</small> | |||
</gallery> | |||
== Protocol == | == Protocol == | ||
Revision as of 01:18, 19 June 2012
The Mastech VA18B a.k.a. V&A VA18B (V&A is a brand of Mastech) is a CAT II (1000V) handheld digital multimeter with USB connectivity.
See Mastech VA18B/Info for more details (such as lsusb -vvv output) about the device.
Hardware
Multimeter:
- ...
USB cable:
- Prolific PL2303HX YR0903A
- 12MHz crystal
Photos
Device, front
PCB, front
PCB, back
USB cable
USB cable PCB, front
USB cable PCB, back
Protocol
14-byte LCD segments over USB-2-serial (Prolific PL2303 chip, 2400 baud, 8n1), see various links below.
To enable output to the PC on the multimeter you have to keep the "Hz/DUTY" key pressed while powering on the device.