Difference between revisions of "Voltcraft VC-920"
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| image = [[File:Voltcraft vc920.png|180px]] | | image = [[File:Voltcraft vc920.png|180px]] | ||
| name = Voltcraft VC-920 | | name = Voltcraft VC-920 | ||
| status = | | status = supported | ||
| source_code_dir = | | source_code_dir = serial-dmm | ||
| counts = 40000/4000 | | counts = 40000/4000 | ||
| categories = CAT III (1000V) / CAT IV (600V) | | categories = CAT III (1000V) / CAT IV (600V) | ||
| Line 9: | Line 9: | ||
| measurements = voltage, resistance, diode, continuity, capacitance, frequency, duty cycle, current, temperature | | measurements = voltage, resistance, diode, continuity, capacitance, frequency, duty cycle, current, temperature | ||
| features = autorange, hold, relative, min/max, bargraph, backlight | | features = autorange, hold, relative, min/max, bargraph, backlight | ||
| website = [http://www.conrad.de/ce/de/product/123296/VOLTCRAFT-VC920-TRMS-Digital-Multimeter-m-Software-VC900-Serie-400004000-Counts-CAT-IV-600V conrad.de] | | website = [https://web.archive.org/web/20120824044029/http://www.conrad.de/ce/de/product/123296/VOLTCRAFT-VC920-TRMS-Digital-Multimeter-m-Software-VC900-Serie-400004000-Counts-CAT-IV-600V conrad.de] | ||
}} | }} | ||
| Line 15: | Line 15: | ||
This is a rebadged [http://uni-trend.com/UT71A.html UNI-T UT71A]. | This is a rebadged [http://uni-trend.com/UT71A.html UNI-T UT71A]. | ||
See [[UNI-T UT71x series]] for information common to all devices in this series. | |||
== Hardware == | == Hardware == | ||
'''Multimeter''': | '''Multimeter''': | ||
* Cyrustek ES51966P | |||
* '''44000/440000-count dual-slope ADC''': [http://www.cyrustek.com.tw/product-1-44000.htm#ES51966 Cyrustek ES51966P] ([http://www.cyrustek.com.tw/spec/ES51966A.pdf datasheet]) | |||
* '''16-bit microcontroller''': [http://www.ti.com/product/msp430f149 Texas Instruments MSP430F149] (markings "TI 87E817T G4 LSD0007 REV N") ([http://www.ti.com/lit/gpn/msp430f149 datasheet]) | |||
* '''128 (32 x 4) pattern multi-function LCD driver'''': [http://www.holtek.com.tw/english/docum/consumer/1621.htm Holtek HT1621B] ([http://www.holtek.com.tw/pdf/consumer/ht1621v310.pdf datasheet]) | |||
* '''PCB markings''': The silkscreen reads "71A V20051010-6", but the correct "920" model indication is apparently added manually by UNI-T using a sticker. | |||
'''RS232 cable:''' | '''RS232 cable:''' | ||
| Line 46: | Line 52: | ||
== Protocol == | == Protocol == | ||
See [[ | See [[UNI-T UT71x series#Protocol]]. | ||
== Resources == | == Resources == | ||
| Line 57: | Line 61: | ||
[[Category:Device]] | [[Category:Device]] | ||
[[Category:Multimeter]] | [[Category:Multimeter]] | ||
[[Category: | [[Category:Supported]] | ||
Latest revision as of 12:46, 30 December 2014
 | |
| Status | supported |
|---|---|
| Source code | serial-dmm |
| Counts | 40000/4000 |
| IEC 61010-1 | CAT III (1000V) / CAT IV (600V) |
| Connectivity | RS232 / USB |
| Measurements | voltage, resistance, diode, continuity, capacitance, frequency, duty cycle, current, temperature |
| Features | autorange, hold, relative, min/max, bargraph, backlight |
| Website | conrad.de |
The Voltcraft VC-920 is a 40000/4000 counts, CAT III (1000V) / CAT IV (600V) handheld digital multimeter with RS232 or USB connectivity.
This is a rebadged UNI-T UT71A.
See UNI-T UT71x series for information common to all devices in this series.
Hardware
Multimeter:
- 44000/440000-count dual-slope ADC: Cyrustek ES51966P (datasheet)
- 16-bit microcontroller: Texas Instruments MSP430F149 (markings "TI 87E817T G4 LSD0007 REV N") (datasheet)
- 128 (32 x 4) pattern multi-function LCD driver': Holtek HT1621B (datasheet)
- PCB markings: The silkscreen reads "71A V20051010-6", but the correct "920" model indication is apparently added manually by UNI-T using a sticker.
RS232 cable:
USB cable:
Photos
Multimeter:
PCB, top
PCB, bottom
RS232 cable:
See Device cables#UNI-T_UT-D02.
USB cable:
See Device cables#UNI-T_UT-D04.
Protocol
See UNI-T UT71x series#Protocol.