Fluke 187 사용자 설명서

Fluke

Model 187 & 189
Users Manual

7-12

Input Characteristics

Function

Input Impedance (Nominal)

Volts, mV

10 M

Ω

, < 100 pF

Common Mode Rejection Ratio

Normal Mode Rejection

DC Volts, mV

>100 dB at dc, 50 Hz or 60 Hz ±0.1%

>90 dB at 50 Hz or 60 Hz

±

0.1%

AC Volts, mV

> 90 dB dc to 60 Hz

Full-Scale Voltage

Open Circuit Test Voltage

To 5 M

Ω

30 M

Ω

+ nS

Ohms

< 5 V

500 mV

3.1 V

Diode Test

< 5 V

3.1000 V

Typical Short-Circuit Current

500

Ω

5 k

Ω

50 k

Ω

500 k

Ω

5 M

Ω

30 M

Ω

Ohms

1 mA

100

µ

A

10

µ

A

1

µ

A

0.1

µ

A

0.1

µ

A

Diode Test

1 mA typical