Velleman DVM4100

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Velleman DVM4100
DVM4100.png
Status supported
Source code serial-dmm
Counts 6000
IEC 61010-1 CAT III (1000V) / CAT IV (600V)
Connectivity USB/serial
Measurements voltage, current, resistance, capacitance, frequency, temperature, duty cycle, diode, continuity
Features autorange, data hold, relative, min/max, backlight
Website velleman.eu

The Velleman DVM4100 is a 6000 count CAT III (1000V) / CAT IV (600V) handheld digital multimeter with USB connectivity.

See Velleman DVM4100/Info for more details (such as lsusb -v output) about the device.

The Velleman DVM4100 model looks identical to the PeakTech 3415, except for its labels and blue case color. The DVM4100 also has similarities with the V&A VA40B but with a different protocol version. This could suggest that those devices share the Dream Tech International DTM0660 as main IC since it's possible to modify certain protocol characteristics using this IC.

Hardware

Multimeter:

USB cable:

Photos

Protocol

15-byte LCD segments over USB-to-serial (Prolific chip, 2400 baud, 8n1). The DMM IC used in this multimeter is a Dream Tech International DTM0660.

To enable output to the PC on the multimeter you have to keep the REL key pressed while powering on the device. However, it will auto-poweroff (after roughly 1 hour?), even in this mode. To avoid that, press both the REL and the SELECT key during power-up (see manual).

Resources