Difference between revisions of "Voltcraft VC-840"
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'''RS232 cable:''' | '''RS232 cable:''' | ||
* See [[Device cables#UNI-T_UT- | * See [[Device cables#UNI-T_UT-D02]]. | ||
'''USB cable:''' | '''USB cable:''' | ||
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'''RS232 cable:''' | '''RS232 cable:''' | ||
See [[Device cables#UNI-T_UT- | See [[Device cables#UNI-T_UT-D02]]. | ||
'''USB cable:''' | '''USB cable:''' | ||
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== Protocol == | == Protocol == | ||
See [[Multimeter_ICs#Fortune_Semiconductor_FS9721_LP3]]. | |||
A [http://www.produktinfo.conrad.com/datenblaetter/100000-124999/123295-da-01-en-RS232_Protocol_VOLTCRAFT_VC840_DMM.pdf short protocol description is also available from Voltcraft/Conrad]. And [http://www2.produktinfo.conrad.com/datenblaetter/100000-124999/121112-da-01-en-Digitalmultimeter_VC840_Schnittstellenp.pdf another one]. | |||
A [http://www.produktinfo.conrad.com/datenblaetter/100000-124999/123295-da-01-en-RS232_Protocol_VOLTCRAFT_VC840_DMM.pdf short protocol description is available from Voltcraft/Conrad]. And [http://www2.produktinfo.conrad.com/datenblaetter/100000-124999/121112-da-01-en-Digitalmultimeter_VC840_Schnittstellenp.pdf another one] | |||
== Resources == | == Resources == |
Revision as of 02:33, 2 November 2012
The Voltcraft VC-840 is a 4000 counts, CAT IV (600V) handheld digital multimeter with RS232 or USB connectivity.
Hardware
Multimeter:
- Multimeter IC: Fortune Semiconductor FS9721_LP3 (datasheet)
- Low power, True RMS-to-DC converter: Analog Devices AD737J (datasheet)
- Unknown SO-8 chip: ?
- Crystal: likely 4MHz (not verified, though)
- Fuses: 10A/250V and 500mA/250V (one glass fuse, one HRV fuse)
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.
A short protocol description is also available from Voltcraft/Conrad. And another one.