Voltcraft M-3650CR

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Voltcraft M-3650CR
Voltcraft m-3650cr.png
Status supported
Counts 2000
IEC 61010-1
Connectivity RS232
Measurements voltage, current, resistance, capacitance, hFE, diode, continuity, frequency, logic
Features data hold, bargraph, difference

The Voltcraft M-3650CR is a 2000 counts handheld digital multimeter with RS232 connectivity.

It came into the market 1991 and is a rebadged Metex M-3650CR.

Contents

Hardware

Multimeter:

  • Fuse: 2A/250V (5x20mm) (for the A jack; the 20A jack is unfused!)
  • TODO.

RS232 cable:

Photos

Multimeter:

RS232 cable:

See Device_cables#Metex_5-pin_RS232_cable.

Protocol

The protocol is (partially) documented in the manual of the Voltcraft M-3650CR and was determined completely by testing. See Multimeter ICs#Alternative Protocol.

Resources

Measurement functions and ranges

Measurement function Range Resolution Accuracy sigrok result Remarks
V= 200.0 mV 100 μV ±(0.3% + 1) mq V, unit V, mqflags DC
2.000 V 1 mV "
20.00 V 10 mV "
200.0 V 100 mV "
1000 V 1 V "
V≈ 200.0 mV 100 μV ±(0.8% + 3) mq V, unit V, mqflags AC
2.000 V 1 mV "
20.00 V 10 mV "
200.0 V 100 mV "
750 V 1 V ±(1.2% + 3) "
A= 2.000 mA 1 µA ±(0.5% + 1) mq Curr., unit A, mqflags DC
200.0 mA 100 µA ±(1,2% + 1) "
20.00 A 10 mA ±(2,0% + 5) " Max. 20 min.; unfused!
A≈ 2.000 mA 10 µA ±(1,0% + 5) mq Curr., unit A, mqflags AC
200.0 mA 100 µA ±(1,8% + 5) "
20.00 A 10 mA ±(3.0% + 7) " Max. 20 min.; unfused!
Ω 200.0 Ω 100 mΩ mq Res., unit Ω, mqflags -
2.000 kΩ 1 Ω "
20.00 kΩ 10 Ω "
200.0 kΩ 100 Ω "
2.000 MΩ 1 kΩ "
20.00 MΩ 10 kΩ "
Cap. F 2000 pF 1 pF ±(2.0% + 3) mq Cap., unit F, mqflags -
200.0 nF 100 pF "
20.00 µF 10 nF ±(3.0% + 5) "
Hz= 20.00 kHz 1 Hz ±(2% + 3) mq Freq., unit Hz, mqflags DC
200.00 kHz 10 Hz "
Logic -
hFE  ? IB=10 µA, UCE=2,8 V
Diode mq V, unit V, mqflags DC,DIODE
Data Hold - Not supported by protocol.

The column "sigrok result" contains in short form what the driver generates for the resp. data type.