Voltcraft VC-840

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Voltcraft VC-840
Voltcraft vc840 device front.png
Status supported
Source code serial-dmm
Counts 4000
IEC 61010-1 CAT IV (600V)
Connectivity RS232 / USB
Measurements voltage, capacitance, continuity, diode, frequency, temperature, current, duty cycle
Features autorange, true-rms, hold, relative
Website conrad.de

The Voltcraft VC-840 is a 4000 counts, CAT IV (600V) handheld digital multimeter with RS232 or USB connectivity.

Hardware

Multimeter:

RS232 cable:

USB cable:

Photos

Multimeter:

RS232 cable:

See Device cables#UNI-T_UT-D02.

USB cable:

See Device cables#UNI-T_UT-D04.

Protocol

See Multimeter_ICs#Fortune_Semiconductor_FS9721_LP3 for the DMM IC protocol.

Depending on the cable, additional decoding is needed, though.

TODO: Serial cable vs. the two USB HID based cables.

A short protocol description is also available from Voltcraft/Conrad. And another one.

Resources