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www.bkprecision.com

High Performance DMM

v041317

Specifications

392 & 393

391A

390A

389A

388B

Current

Ranges

600 µA, 6000 µA, 60 mA, 400 mA, 20 A*

200 µA, 2 mA, 20 mA, 200 mA, 20 A*

400 µA, 4 mA, 40 mA, 400 mA, 20 A*

400 mA, 4 mA, 40 mA, 400 mA, 2 A, 20 A*

Resolution

10 nA, 100 nA, 1 µA, 10 µA, 1 mA

10 nA, 100 nA, 1 µA, 10 µA, 1 mA

0.1 µA, 1 µA, 10 µA, 100 µA, 10 µA

100 nA, 1 µA, 10 µA,100 µA,1 mA,10 mA

DC Accuracy

600 µA to 60 mA: ±(0.5% rdg + 10 dgt)

400 mA: ±(1.0% rdg + 10 dgt)

20 A: ±(2.0% rdg + 10 dgt)

200 µA to200 mA:±(0.5% rdg + 5 dgt)

20 A: ±(2% rdg + 10 dgt)

400 µA - 400 mA:±(1% rdg +

5 dgt)

20 A: ±(2% rdg + 3 dgt)

±(1% rdg + 1 dgt)

±(2% rdg + 3 dgt)

400 µA - 400 mA: ±(1% rdg + 1 dgt)

2 A: ±(1.5% rdg + 1 dgt)

20 A: ±(3% rdg + 3 dgt)

AC Accuracy

600 µA to 400 mA: ±(1.5% rdg + 20 dgt)

20 A: ±(2.5% rdg + 20 dgt)

200 µA to200 mA:±(1.2% rdg + 10 dgt)

20 A: ±(2.5% rdg + 20 dgt)

400 µA to 400 mA:±(1.5% rdg + 4 dgt)

20 A: ±(2.5% rdg + 4 dgt)

400 µA - 400 mA:±(1.5% rdg + 1 dgt)

2 A: ±(2% rdg + 4 dgt)

20 A: ±(3.5% rdg + 4 dgt)

Input Protection

µA/mA input: 0.5A/100V fast blow ceramic fuse

20A input: 20A/600A fast blow ceramic fuse

µA/mA input:0.5 A/500 V fast blow ceramic fuse

20 A input: 20 A/600 A fast blow ceramic fuse

µA/mA input: 2 A/600 V fast blow ceramic fuse

20 A input: 20 A/600 V fast blow ceramic fuse

Max. Burden Voltage

500 mV on 600 µA & 60 mA ranges,

2 V on 6000 µA range

600 mV (900 mV on 20 A range)

500 mV (2 V on 4 mA, 400 mA ranges)

600 mV (900 mV on 2 A, 20 A ranges)

Resistance

Ranges

600

Ω, 6 kΩ, 60 kΩ, 600 kΩ, 6 MΩ, 60 MΩ 200 Ω;2 kΩ,20 kΩ,200 kΩ;2 MΩ,20 MΩ

400

Ω, 4 kΩ, 40 kΩ, 400 kΩ, 4 MΩ, 40 MΩ

Resolution

10 m

Ω, 100 mΩ, 1 Ω, 10 Ω, 100 Ω, 1 kΩ

10 m

Ω,100 mΩ,1 Ω,10 Ω,100 Ω,1 kΩ

100 m

Ω, 1 Ω, 10 Ω, 100 Ω, 1 kΩ, 10 kΩ

Accuracy

600

Ω: ±(0.3% rdg + 20 dgt),

6 k

Ω to 6 MΩ: ±(0.3% rdg + 10 dgt),

6 M

Ω: ±(1.0% rdg + 10 dgt),

60 M

Ω: ±(3.0% rdg + 20 dgt)

200

Ω, 2 MΩ: ±(0.25% rdg + 10 dgt)

2 k

Ω to 200 kΩ: ±(0.15% rdg + 3 dgt)

20 M

Ω: ±(1.0% + 10 dgt)

400

Ω to 400 kΩ: ±(0.5% rdg + 4 dgt)

4 M

Ω: ±(1% rdg + 5 dgt)

40 M

Ω: ±(2% rdg + 5 dgt)

400

Ω: ±(1% rdg + 4 dgt)

4 k

Ω to 4 MΩ: ±(0.8% rdg + 4 dgt)

40 M

Ω: ±(2% rdg + 5 dgt)

Open Circuit Voltage

-1.2 VDC typical,

-3.0 VDC typical on 600

Ω range

3.2 VDC typical

-0.45 VDC typ. (-1.2 VDC on 400

Ω range)

0.6 VDC typ. (3.2 VDC on 400

Ω range)

Overload Protection

600 VDC or 600 VAC rms

500 VDC or 500 AC rms

Diode Test

Tested at 0.5 mA, 2 VDC max. typical

±(2.0% rdg + 10 dgt) accuracy

Tested at 1 mA, 3.2 VDC max. typical

±(1% rdg + 10 dgt) accuracy

Tested at 1.2 mA, 3.0 VDC max. typical

±(1.5% rdg + 3 dgt) accuracy

Tested at 1 mA, 3.2 VDC max. typical

±(1.5% rdg + 3 dgt) accuracy

Transistor Test (hFE)

Does not apply

Does not apply

Does not apply

hFE range: 0 - 1000,hFE base current:10 µADC

Capacitance

Ranges

6 nF, 60 nF, 600 nF, 6 µF, 60 µF, 600 µF, 6 mF

-

4 nF. 40 nF, 400 nF, 4 µF, 40 µF, 400 µF, 4 mF, 40 mF

4 nF. 40 nF, 400 nF, 4 µF, 40 µF

Resolution

1 pF, 10 pF, 100 pF, 1 nF, 10 nF, 100 nF, 1 µF

-

1 pF, 10 pF, 100 pF, 1 nF, 10 nF, 100 nF, 1 µF, 10 µF

0.1 pF, 1 pF, 10 pF, 100 pF, 1 nF

Accuracy

6 nF: ±(3% rdg+30 dgt), 60 nF to 600 µF: ±(3%

rdg +10dgt), 6 mF: ±(5% rdg+10 dgt)

-

4 nF: ±(3% rdg+20 dgt) 4 nF to 40 µF: ±(3% rdg +5dgt)

400 µFto 40 mF: ±(5% rdg + 10 dgt)

±(3% rdg + 4 dgt)

Test Voltage

<1 V

-

<1V

<3.5 V

Overload Protection

600 VDC or 600 VAC rms

-

500 VDC or AC rms

Frequency

Ranges

60 Hz, 400 Hz, 6 kHz, 60 kHz,

600 kHz, 6 MHz, 10 MHz

2 kHz, 20 kHz, 200 kHz

4 kHz, 40 kHz, 400 kHz, 4 MHz, 40 MHz

4 kHz, 40 kHz, 400 kHz, 4 MHz

Resolution

0.0001Hz, 0.01 Hz, 0.1 Hz, 1 Hz,

10 Hz, 100 Hz, 1 kHz

0.1 Hz, 1 Hz, 10 Hz

1 Hz, 10 Hz, 100 Hz, 10 kHz, 100 kHz

1 Hz, 10 Hz, 100 Hz, 10 kHz

Accuracy

±(0.1% rdg + 10 dgt)

±(0.1% rdg + 3 dgt)

±(0.1% rdg + 3 dgt)

±(0.25% + 4 dgt)

±(0.1% + 2 dgt)

Sensitivity

>100 ns

50 mVrms min. (At>30 & <70% duty

cycle: 400 mVrms min.)

1 Hz - 4 MHz: 1Vrms

4 MHz - 40 MHz: >2 Vrms, <5 Vrms

250 mVrms min. on 10 Hz to 1 MHz

500 mVrms min. on 1 MHz to 4 MHz

Minimum Pulse Width

>25 ns

>25 ns

>25 ns

>2 µs

Duty Cycle Limits

>30% & <70%

>30% & <70%

>30% & <70%

Minimum Input Range

>0 Hz

2kHz:10Hz:20kHz:>60dgt; 200kHz>60dgt

-

-

-

Overload Protection

600 VDC or 600 VAC rms

500 VDC or 500 AC rms

Logic Test

Logic Threshold

-

Hi: 2.8±0.8 V, Lo: 0.8 ± 0.5 V

-

-

Hi: 2.8±0.8 V, Lo: 0.8 ± 0.5 V

Frequency Response

-

20 MHz

-

-

20 MHz

Pulse Width

-

25 ns

-

-

25 ns

Pulse Limits

-

>20% and <80%

-

-

>20% and <80%

Indication

-

40 ms beep at logic 1 (Hi)

-

-

40 ms beep at logic 1 (Hi)

Overload Protection

-

500 V DC or 500 AC rms

-

-

500 V DC or 500 AC rms

Temperature

Range, Resolution

-58° to +2372°F, 0.1F°,

(-50°to + 1300°C, 0.1C°)

-

-58° to +2372°F, 1F°,

(-50°to + 1300°C, 1C°)

-

-

Accuracy

±(2.0% rdg + 6°F) -58°F to 32°F & 750°F to 2372°F,

±(1.0% rdg + 2°F) 32°F to 750°F

±(2.0% rdg + 3°C) -50° to 0°C & 400°C to 1300°C,

±(1.0% rdg + 1°C) 0°C to 400°C

-

±(0.8% rdg + 2°C) -50° - 400°C,

±(1% rdg + 2°C) 400° - 1300°C

-

-

Duty Cycle

Range, Resolution

5 to 95%, 0.1%

0 to 90%, 0.1%

-

-

-

Accuracy (5V logic)

±(2.0% rdg + 10 dgt)

±(2.0% rdg + 10 dgt)

-

-

-

Minimum Pulse Width

10 µs

10 µs

-

-

-

Frequency Range

40 Hz to 20 kHz

40 Hz to 20 kHz

-

-

-

Overload Protection

600 VDC or 600 VAC rms

500 VDC or 500 AC rms

-

-

-

General

Display

60000 count, 4 5/6 digit LCD

20000 count, 4 1/2 digit LCD

4000 count, 3 3/4 digit LCD with 41 segment analog bar graph

4000 count, 3 3/4 digit LCD

Polarity

Automatic, positive implied, negative polarity indication

Operating Temperature

32° to 122° (0˚ to 50˚C), 0 to 70% R.H.

Dimensions (HxWxD)

7.8 x 3.5 x 1.57" (198 x 90 x 40 mm)

Weight

14.1 oz. (400 g)

11.3 oz. (320 g)

Three-Year Warranty

Included Accessories

9 V battery, test leads, instruction manual, thermocouple probe (models 390A, 392, & 393), software and USB interface cable (models 390A & 393)

* 10 A continuous, 20 A for 30 seconds maximum