Rigol DM3068 Uživatelská příručka stáhnout pdf (Strana 150)

RIGOL Chapter 6 Specifications

User’s Guide for DM3068

6-4

Measuring Characteristics

DC Voltage

Input Impedance 200 mV, 2 V, 20 V ranges: 10 MΩ or >10 GΩ

(For these ranges, input beyond ±26 V are clamped through 106 kΩ)

200 V and 1000 V ranges: 10 MΩ±1%

Input Protection 1000 V

Input Offset Current

50 pA, at 25℃, typical

CMRR (common mode

rejection ratio)

140 dB for 1 kΩ unbalanced resistance in LO lead, ±500 VDC peak maximum.

Resistance

Measurement Method 4-wire or 2-wire resistance

Current source referenced to LO input

Open-circuit Voltage Limited to <10 V

Max. Lead Resistance

(4-wire)

10% of range per lead for 200 Ω and 2 kΩ ranges, 1 kΩ per lead on all other ranges

Input Protection 1000 V on all ranges

Offset Compensation Available on 200 Ω, 2 kΩ and 20 kΩ ranges.

DC Current

Shunt Resistor 100 Ω for 200 uA, 2 mA

1 Ω for 20 mA , 200 mA

0.01 Ω for 2 A, 10 A

Input Protection Externally accessible 500 mA, 250 V high speed fuse at the rear panel for 200 uA, 2 mA, 20 mA and 200 mA ranges.

Internal 10 A, 250 V high speed fuse for 2 A and 10 A ranges.

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Rigol DM3068 Uživatelská příručka Strana 150