Difference between revisions of "Voltcraft VC-820"
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<gallery> | <gallery> | ||
File:Voltcraft vc820 device.jpg | File:Voltcraft vc820 device.jpg|<small>Device, front</small> | ||
File:Voltcraft vc820 device back1.jpg | File:Voltcraft vc820 device back1.jpg|<small>Device, back</small> | ||
File:Voltcraft vc820 device back2.jpg | File:Voltcraft vc820 device back2.jpg|<small>Device, back w/o battery</small> | ||
File:Voltcraft vc820 battery1.jpg | File:Voltcraft vc820 battery1.jpg|<small>Battery 1</small> | ||
File:Voltcraft vc820 battery2.jpg | File:Voltcraft vc820 battery2.jpg|<small>Battery 2</small> | ||
File:Voltcraft vc820 device open1.jpg | File:Voltcraft vc820 device open1.jpg|<small>Device, open</small> | ||
File:Voltcraft vc820 device open2.jpg | File:Voltcraft vc820 device open2.jpg|<small>Device, open 2</small> | ||
File:Voltcraft vc820 device open3.jpg | File:Voltcraft vc820 device open3.jpg|<small>Cover 1</small> | ||
File:Voltcraft vc820 device open4.jpg | File:Voltcraft vc820 device open4.jpg|<small>Cover 2</small> | ||
File:Voltcraft vc820 shielding.jpg | File:Voltcraft vc820 shielding.jpg|<small>Shielding</small> | ||
File:Voltcraft vc820 ir part.jpg | File:Voltcraft vc820 ir part.jpg|<small>IR assembly</small> | ||
File:Voltcraft vc820 ir pcb | File:Voltcraft vc820 ir pcb top.jpg|<small>IR PCB, top</small> | ||
File:Voltcraft vc820 ir pcb | File:Voltcraft vc820 ir pcb bottom.jpg|<small>IR PCB, bottom</small> | ||
File:Voltcraft vc820 pcb front with lcd.jpg | File:Voltcraft vc820 pcb front with lcd.jpg|<small>PCB, front</small> | ||
File:Voltcraft vc820 pcb back.jpg | File:Voltcraft vc820 pcb back.jpg|<small>PCB, back</small> | ||
File:Voltcraft vc820 pcb front top.jpg | File:Voltcraft vc820 pcb front top.jpg|<small>PCB, top</small> | ||
File:Voltcraft vc820 pcb light1.jpg | File:Voltcraft vc820 pcb light1.jpg|<small>PCB, light 1</small> | ||
File:Voltcraft vc820 pcb light2.jpg | File:Voltcraft vc820 pcb light2.jpg|<small>PCB, light 2</small> | ||
File:Voltcraft vc820 fs9721 lp3.jpg | File:Voltcraft vc820 fs9721 lp3.jpg|<small>FS9721_LP3</small> | ||
File:Voltcraft vc820 crystal.jpg | File:Voltcraft vc820 crystal.jpg|<small>Crystal</small> | ||
File:Voltcraft vc820 lcd front.jpg | File:Voltcraft vc820 lcd front.jpg|<small>LCD, front</small> | ||
File:Voltcraft vc820 lcd back.jpg | File:Voltcraft vc820 lcd back.jpg|<small>LCD, back</small> | ||
File:Voltcraft vc820 lcd.jpg|<small>LCD</small> | File:Voltcraft vc820 lcd.jpg|<small>LCD, all segments</small> | ||
</gallery> | </gallery> | ||
Revision as of 19:09, 22 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:
Device, front
Device, back
Device, back w/o battery
Battery 1
Battery 2
Device, open
Device, open 2
Cover 1
Cover 2
Shielding
IR assembly
IR PCB, top
IR PCB, bottom
PCB, front
PCB, back
PCB, top
PCB, light 1
PCB, light 2
FS9721_LP3
Crystal
LCD, front
LCD, back
LCD, all segments
RS232 cable:
See Multimeter cables#UNI-T_UT-D01.
USB cable:
See Multimeter cables#UNI-T_UT-D04.
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.