Voltcraft VC-820

Voltcraft VC-820

The Voltcraft VC-820 is a 4000 counts, CAT III (1000V) / CAT IV (600V) handheld digital multimeter with RS232 or USB connectivity.

See Voltcraft VC-820/Info for more details (such as lsusb -vvv output) about the device.

Hardware

TODO.

Photos

Multimeter:

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  LCD

RS232 cable:

See Voltcraft_VC-840#Photos.

USB cable:

TODO.

Protocol

The connection to the PC is done using a cable which converts the optical signal (IR) on the multimeter to RS232.

The serial connection uses 2400 baud (hardcoded, cannot be changed) with 8n1 settings. The multimeter transmits 14-byte data packets periodically, the host can not send any commands whatsoever, only read the transmitted data.

A short protocol description is available from Voltcraft/Conrad.

Resources

• true random: driver for the cheap digital multimeter VC 840/VC 820
• true random: Software for the multimeters vc840/vc820
• Georg Acher: Voltcraft VC820/VC840 und Linux