Brymen BM857

From sigrok
Revision as of 23:59, 23 November 2012 by Mrnuke (talk | contribs) (→‎Hardware)
Jump to navigation Jump to search
Brymen BM857

The Brymen BM857 is a 50000 counts (500000 DC), CAT IV handheld digital multimeter with infrared connectivity.

Hardware

Multimeter:

  • Multimeter IC: TBD
  • Precision +2.5V Voltage reference: Analog Devices REF43
  • True RMS-to-DC converter: Analog Devices AD737
  • EEPROM(?): Chip marked S24C0.
  • Unidentified: Several 062-JRC chips. These appear to be JFET opamps.
  • Unidentified: Two QFP64 chips.
  • TODO


Cable:

  • TODO

See http://sigrok.org/wiki/User_talk:Mrnuke#BM857_PC_Interface_cable

Photos

Multimeter:

Cable:

We don't have a cable (BC-85Xa) for this device. Currently, mrnuke is working on an improvised USB-to-infrared converter for development purposes. If you have a BC-85Xa you'd like to donate, contact mrnuke on #sigrok.

Protocol

TODO

Resources

TODO