Difference between revisions of "Voltcraft M-4650CR"
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(certainly no IEC CAT, the device was sold in the 90s and the IEC 61010-1 was taking effect in 2004 - however, this is only an educated guess) |
Uwe Hermann (talk | contribs) m |
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| Line 5: | Line 5: | ||
| source_code_dir = serial-dmm | | source_code_dir = serial-dmm | ||
| counts = 20000 | | counts = 20000 | ||
| categories = | | categories = — | ||
| connectivity = RS232 | | connectivity = RS232 | ||
| measurements = voltage, current, hFE, logic, capacitance, frequency, resistance, continuity, diode | | measurements = voltage, current, hFE, logic, capacitance, frequency, resistance, continuity, diode | ||
| features = hold, relative, min/max, bargraph | | features = hold, relative, min/max, bargraph | ||
| website = [http://www. | | website = [http://www.conrad.de conrad.de] | ||
}} | }} | ||
The '''Voltcraft M-4650CR''' is a 20000 counts, handheld digital multimeter with RS232 connectivity. | The '''Voltcraft M-4650CR''' is a 20000 counts, handheld digital multimeter with RS232 connectivity. | ||
It is a rebadged Metex M-4650CR. | It is a rebadged [[Metex M-4650CR]]. | ||
== Hardware == | == Hardware == | ||
| Line 20: | Line 20: | ||
'''Multimeter''': | '''Multimeter''': | ||
* '''Main IC''': Metex 89CR (markings: "Metex 89CR 1146 1G1") | |||
* '''8-line to 3-line priority encoder''': 2x 74HC148A (markings: "T 91 16H 74HC148A") | |||
* 2x CD4010BE | |||
* T 91 05H 74HC08A | |||
* M 14027B XXEW045 | |||
* M 14512B XXGF111 | |||
* TC 7129CKW 9129BCJ | |||
* 2x B6 LTV817 | |||
* '''Fuse''': 2A/250V fast (5x20mm) (for the A jack; the 20A jack is unfused!) | * '''Fuse''': 2A/250V fast (5x20mm) (for the A jack; the 20A jack is unfused!) | ||
'''RS232 cable''': | '''RS232 cable''': | ||
| Line 28: | Line 35: | ||
== Photos == | == Photos == | ||
'''Multimeter''': | '''Multimeter''': | ||
Revision as of 16:26, 1 January 2014
 | |
| Status | supported |
|---|---|
| Source code | serial-dmm |
| Counts | 20000 |
| IEC 61010-1 | — |
| Connectivity | RS232 |
| Measurements | voltage, current, hFE, logic, capacitance, frequency, resistance, continuity, diode |
| Features | hold, relative, min/max, bargraph |
| Website | conrad.de |
The Voltcraft M-4650CR is a 20000 counts, handheld digital multimeter with RS232 connectivity.
It is a rebadged Metex M-4650CR.
Hardware
Multimeter:
- Main IC: Metex 89CR (markings: "Metex 89CR 1146 1G1")
- 8-line to 3-line priority encoder: 2x 74HC148A (markings: "T 91 16H 74HC148A")
- 2x CD4010BE
- T 91 05H 74HC08A
- M 14027B XXEW045
- M 14512B XXGF111
- TC 7129CKW 9129BCJ
- 2x B6 LTV817
- Fuse: 2A/250V fast (5x20mm) (for the A jack; the 20A jack is unfused!)
RS232 cable:
Photos
Multimeter:
The photos are showing the Metex M-4650CR, the Voltcraft only has a different brand label.
Device, front
Device, back
Device, side
Device, display self test on power on.
Device opened
Device opened, fuse section
Cable:
See Device_cables#Metex_5-pin_RS232_cable.
Protocol
See Multimeter ICs#Alternative_Protocol.