Difference between revisions of "Voltcraft VC-840"
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== Hardware == | == Hardware == | ||
Multimeter: | |||
* '''Multimeter IC''': [http://www.ic-fortune.com/eng/new_product3_3.asp Fortune Semiconductor FS9721_LP3] ([http://www.ic-fortune.com/upload/Download/FS9721_LP3-DS-20_EN.pdf datasheet]) | * '''Multimeter IC''': [http://www.ic-fortune.com/eng/new_product3_3.asp Fortune Semiconductor FS9721_LP3] ([http://www.ic-fortune.com/upload/Download/FS9721_LP3-DS-20_EN.pdf datasheet]) | ||
* ... | * ... | ||
[http://www.conrad.de/ce/de/product/125640/VOLTCRAFT-RS-232-SCHNITTSTELLENADAPTER/SHOP_AREA_17626&promotionareaSearchDetail=005 RS232 cable]: | |||
* TODO | |||
[http://www.conrad.de/ce/de/product/120317/Voltcraft-USB-SCHNITTSTELLENADPTER/SHOP_AREA_17626&promotionareaSearchDetail=005 USB cable]: | |||
* TODO | |||
== Photos == | == Photos == | ||
Revision as of 01:13, 29 June 2012
The Voltcraft VC-840 is a CAT IV (600V) handheld digital multimeter with RS232 or (optional) USB connectivity.
See Voltcraft VC-840/Info for more details about the device.
Hardware
Multimeter:
- Multimeter IC: Fortune Semiconductor FS9721_LP3 (datasheet)
- ...
- TODO
- TODO
Photos
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.
TODO: Optional USB cable.
Resources
TODO.