Measuring characteristics – RIGOL M300 User Manual
Page 137
RIGOL
© 2007 RIGOL Technologies, Inc.
User’s Guide for DM3000 Series
5-17
Measuring Characteristics
DC Voltage
Input Resistance:
400mV, 4V ranges
Selectable 10MΩ ± 2% or >10GΩ
40V, 400V, 1000V ranges
10MΩ ± 2%
Resistance
Measurement Method:
Selectable 4-wire or 2-wire.
Current source referenced to LO input.
Open-circuit Voltage:
Limit in <7V.
Max. Lead Resistance:
10% of range per lead for 400Ω, 1kΩ per lead
(4-wire ohms)
on all other ranges.
Input Protection:
1000V on all ranges.
DC Current
Shunt Resistor:
0.025Ω for 1A, 10A
1.025Ω for 200mA
11.025Ω for 2mA, 20mA
Input Protection:
Externally accessible 10A, 250V fuse
Internal 12A, 250V fuse
Continuity / Diode Test
Measurement Method:
1mA ± 0.2% test current, Limit in <8V
Response Time:
25 samples / sec
Continuity Threshold:
Adjustable from 1Ω to 2000Ω
Input Protection:
1000V
True RMS AC Voltage
Measurement Method:
AC coupled true-RMS-measure the ac component of input with up to
400Vdc of bias on any range
Input Impedance:
1MΩ ± 2%, in parallel with 100pF
Input Protection:
750VRMS all ranges
True RMS AC Current
Measurement Method:
Direct coupled to the fuse and shunt. AC coupled true RMS measurement
(measures the ac component only)
Max. Input:
The DC + AC current peak value <300% of the range. The RMS current
including DC current <10A.