Difference between revisions of "Voltcraft VC-820"
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== Resources == | == Resources == | ||
* [http://www.true-random.com/driver-for-the-cheap-digital-multimeter-vc-840vc-820.html true random: driver for the cheap digital multimeter VC 840/VC 820] | |||
* [http://true-random.com/homepage/projects/vc840/index.html true random: Software for the multimeters vc840/vc820] | |||
* [http://www.lrr.in.tum.de/~acher/vc840/index.html Georg Acher: Voltcraft VC820/VC840 und Linux] | |||
Revision as of 23:00, 9 July 2012
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:
LCD
RS232 cable:
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.