Bk-precision 889B - Manual Uživatelský manuál stáhnout pdf (Strana 7)

2. AC Voltage Measurement (True RMS):

Range : 2V, 20V, 200V, and 600V

Resolution : 1mV, 10mV, 100mV, and 1V

Accuracy : +/- (0.8% + 5 digits)

Input Impedance : 1 M-Ohm

3. DC Current Measurement:

Range : 2mA, 20mA, 200mA, and 2000mA

Resolution : 1uA, 10uA, 100uA, and 1mA

Accuracy : +/- (0.4% + 3 digits)

Current Shunt : 0.1 Ohm @ >20mA, 10 Ohm @ ≤20mA

4. AC Current Measurement (True RMS):

Range : 2mA, 20mA, 200mA, and 2000mA

Resolution : 1uA, 10uA, 100uA, and 1mA

Accuracy : +/- (0.8% + 5 digits)

Current Shunt : 0.1 Ohm @ >20mA, 10 Ohm @ ≤20mA

Note:

The accuracy of DC/AC voltage/current measurements is only applied when in 5% - 100% of the range.

5. LCR Measurement:

Z Accuracy (Ae):

|Zx|

Freq.

20M ~

10M

(Ω)

10M ~

(Ω)

1M ~

100K

(Ω)

100K ~

10K

(Ω)

10K ~

(Ω)

1K ~ 100

(Ω)

100 ~ 1

(Ω)

1 ~ 0.1

(Ω)

DCR 2% ±1



1% ±1 0.5% ±1 0.2% ±1 0.1% ±1 0.2% ±1 0.5% ±1 1% ±1



100Hz

120Hz

1KHz

10KHz 5% ±1



2% ±1

100KHz

200KHz



NA 5% ±1

2% ±1

1% ±1 0.4% ±1 1% ±1 2% ±1 5% ±1

Note:

1. The accuracy applies when the test level is set to 1Vrms.

2. Ae multiplies 1.25 when the test level is set to 250mVrms.

3. Ae multiplies 1.50 when the test level is set to 50mVrms.

4. When measuring L and C, multiply Ae by

1 Dx+

if the Dx＞0.1.

 : Ae is applied only when the test level is set to 1Vrms.

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