Difference between revisions of "V&A VA18B"
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* Protocol descriptions: [http://www.dh2faa.de/va18b.html], [http://www.gomatlab.de/datenuebertragung-va-18b-multimeter-t873.html], [http://multimeter.schewe.com/] | * Protocol descriptions: [http://www.dh2faa.de/va18b.html], [http://www.gomatlab.de/datenuebertragung-va-18b-multimeter-t873.html], [http://multimeter.schewe.com/] | ||
* [http://www.eevblog.com/forum/product-reviews-photos-and-discussion/product-review-dmm-latest-va-mastech-va18b/ EEVblog forums: Product review: DMM latest V&A Mastech VA18B] | |||
Revision as of 02:53, 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.
Resources
- Protocol descriptions: [1], [2], [3]
- EEVblog forums: Product review: DMM latest V&A Mastech VA18B