RIGOL
User’s Guide for DM3058
Measurement Characteristics
DC Voltage
Input Resistance: 200mV and 2V range
1
10MΩ or >10GΩ selectable
(Input signals which exceed ±2.5V in these ranges will pass the 100kΩ
(typical) clamp resistance.
20V, 200V and 1000V range 10MΩ±2%
Input offset current: <90pA, 25℃
Input Protection: 1000V on all ranges
CMRR (common mode rejection ratio): 120dB (For the 1kΩ unbalanced resistance in LO lead,
maximum ± 500VDC).
NMRR (normal mode rejection ratio): 80dB at “slow” measurement rate
Add 20dB
3
when open the “AC filter” (Settling time adds
0.35s (source impedance near zero))
Resistance
Measurement Method: Selectable 4-wire or 2-wire.
Current source referenced to LO input.
Open-circuit Voltage: P/F in <8V.
Max. Lead Resistance: 10% of range per lead for 200Ω, 1kΩ per lead (4-wire ohms) on all
other ranges.
Input Protection: 1000V on all ranges.
DC Current
Shunt Resistor: 200uA sampling voltage<8mV
2mA sampling voltage<80mV
1Ω for 20mA, 200mA
0.01Ω for 2A, 10A
Input Protection: Externally accessible 10A, 250V fast-melt fuse
Internal 12A, 250V slow-melt fuse
Continuity / Diode Test
Measurement Method: 1mA ± 5% current source, <8V open-circuit voltage
Response Time: 123 samples / sec, with beeper
Continuity Threshold: Adjustable from 1Ω to 2000Ω
Input Protection: 1000V
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