Difference between revisions of "V&A VA18B"

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(Peaktech P3375)
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It seems there have been at least two different revisions of the multimeter (or at least of the PC-Link cable). The older one used a Sunplus SPCP825 USB-to-serial chip (see [http://www.mikrocontroller.net/topic/160215#2032176 here], also the software from [http://www.elv.de/digital-multimeter-va18b-mit-pc-link.html here]), the newer revisions use a Prolific PL2303 chip. Both should work fine with sigrok, as long as the respective driver creates a "virtual COM port" / serial port device sigrok can connect to.
It seems there have been at least two different revisions of the multimeter (or at least of the PC-Link cable). The older one used a Sunplus SPCP825 USB-to-serial chip (see [http://www.mikrocontroller.net/topic/160215#2032176 here], also the software from [http://www.elv.de/digital-multimeter-va18b-mit-pc-link.html here]), the newer revisions use a Prolific PL2303 chip. Both should work fine with sigrok, as long as the respective driver creates a "virtual COM port" / serial port device sigrok can connect to.


Models:
{| border="0" style="font-size: smaller" class="alternategrey sortable sigroktable"
* [http://www.mastech.com.cn/html/en/products-va15-17.htm Mastech VA17B]
|-
* ...
!Device
!Rebranded?
!PC interface chip
!Vendor software
!Comments
<!--
|-
| [http://www.mastech.com.cn/html/en/products-va15-17.htm Mastech VA17B]
| no
| ?
| "PC-LINK"
| &mdash;
-->


Rebranding of Mastech multimeters in this series:
|-
| [http://www.mastech.com.cn/html/en/products-va18b.htm Mastech&nbsp;VA18B]&nbsp;(old)
| no
| Sunplus SPCP825
| "PC-LINK"
| &mdash;


|-
| [http://www.mastech.com.cn/html/en/products-va18b.htm Mastech&nbsp;VA18B]&nbsp;(new)
| no
| Prolific PL2303
| "PC-LINK"
| &mdash;
|-
| [http://www.velleman.eu/products/view/?id=372236 Velleman DVM1200]
| yes (VA18B)
| ?
| "PC-LINK"
| &mdash;
|-
| [http://www.maxwell-digital.com/index.php?tld=en&page=product&d1=new&d2=multimeters&c=04_25328 Maxwell MX-25328]
| [http://www.eevblog.com/forum/product-reviews-photos-and-discussion/product-review-dmm-latest-va-mastech-va18b/msg115180/#msg115180 yes] (VA18B)
| ?
| "Maxwell Universal Program"
| Maxwell wrote [http://www.maxwell-digital.com/index.php?tld=en&page=product&d1=new&d2=multimeters&c=04_25328 their own PC software], apparently (works fine with the VA18B if you select "25328" as device in the software).
|-
| [http://www.peaktech.de/productdetail/kategorie/digital---handmultimeter/produkt/p-3375.html Peaktech P3375]
| likely (VA18B)
| ?
| ?
| Very likely a rebranded Mastech VA18B ([https://www.buerklin.com/default.asp?event=ShowArtikel%2821K535%29&l=e&jump=ArtNr_21K535&ajaxLoad=true 1], [http://www.avelmak.sk/index.php?lm=620&pg=det&article=35074 2], [http://www.ebay.de/itm/Digital-Multimeter-Peaktech-P3375-/320835015683?pt=Mess_Pr%C3%BCftechnik&hash=item4ab341d403 3]).
|}
<!--
* [http://www.velleman.eu/products/view/?id=372254 Velleman DVM1000] (no PC connectivity)
* [http://www.velleman.eu/products/view/?id=372254 Velleman DVM1000] (no PC connectivity)
* [http://www.velleman.eu/products/view/?id=372240 Velleman DVM1100] (no PC connectivity)
* [http://www.velleman.eu/products/view/?id=372240 Velleman DVM1100] (no PC connectivity)
* [http://www.velleman.eu/products/view/?id=372236 Velleman DVM1200] (USB), this is a [http://www.thebits.info/general/n56fu-172.htm#comment-6052 rebranded Mastech VA18B] (running "strings" on "PC-LINK.chm" reveals "VA17B", but that's also the case for the software that ships with the VA18B)
* [http://www.velleman.eu/products/view/?id=372566 Velleman DVM1400] (no PC connectivity)
* [http://www.velleman.eu/products/view/?id=372566 Velleman DVM1400] (no PC connectivity)
* [http://www.maxwell-digital.com/index.php?tld=en&page=product&d1=new&d2=multimeters&c=04_25328 Maxwell MX-25328] (USB), this is a [http://www.eevblog.com/forum/product-reviews-photos-and-discussion/product-review-dmm-latest-va-mastech-va18b/msg115180/#msg115180 rebranded Mastech VA18B] (Maxwell wrote their own PC software though, apparently; we confirmed that is works fine with the Mastech VA18B, you just need to select "25328" as device in the Maxwell software)
-->
* [http://www.peaktech.de/productdetail/kategorie/digital---handmultimeter/produkt/p-3375.html Peaktech P3375] (USB), very likely a rebranded VA18B ([https://www.buerklin.com/default.asp?event=ShowArtikel%2821K535%29&l=e&jump=ArtNr_21K535&ajaxLoad=true 1], [http://www.avelmak.sk/index.php?lm=620&pg=det&article=35074 2], [http://www.ebay.de/itm/Digital-Multimeter-Peaktech-P3375-/320835015683?pt=Mess_Pr%C3%BCftechnik&hash=item4ab341d403 3])


== Hardware ==
== Hardware ==

Revision as of 15:48, 23 June 2012

Mastech VA18B

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.

Model overview

It seems there have been at least two different revisions of the multimeter (or at least of the PC-Link cable). The older one used a Sunplus SPCP825 USB-to-serial chip (see here, also the software from here), the newer revisions use a Prolific PL2303 chip. Both should work fine with sigrok, as long as the respective driver creates a "virtual COM port" / serial port device sigrok can connect to.

Device Rebranded? PC interface chip Vendor software Comments
Mastech VA18B (old) no Sunplus SPCP825 "PC-LINK" —
Mastech VA18B (new) no Prolific PL2303 "PC-LINK" —
Velleman DVM1200 yes (VA18B) ? "PC-LINK" —
Maxwell MX-25328 yes (VA18B) ? "Maxwell Universal Program" Maxwell wrote their own PC software, apparently (works fine with the VA18B if you select "25328" as device in the software).
Peaktech P3375 likely (VA18B) ? ? Very likely a rebranded Mastech VA18B (1, 2, 3).


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

Retrieved from "https://sigrok.org/w/index.php?title=V%26A_VA18B&oldid=2379"