BK388B万用表

 

Specifications

Model 388B

Volts

 

DC Ranges

400 mV, 4V, 40V, 400V, 1000V

AC Ranges

400 mV, 4V, 40V, 400V, 750V

Resolution

100uV, 1 mV, 10 mV, 100 mV, 1 V

DC Accuracy

+-(0.5% rdg + 1 dgt)

AC Accuracy

+-(1.2%rdg + 4 dgt)

 

750V: +- (2% rdg + 4 dgt)

 

+-(1.5% rdg + 3 dgt) 500 Hz-1kHz

Overload Protection

1200VDC or AC rms

 

500VDC/AC rms 15 sec

 

on 200mV range

Input Impedance

10MΩ

Current

 

Ranges

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

Resolution

100 nA, 1 uA, 10 uA, 100 uA, 1 mA, 10 mA

DC Accuracy

400 uA - 400 mA: +-(1% rdg + 1 dgt)
2A: +-(1.5% rdg + 1 dgt)
20A: +-(3% rdg + 3 dgt)

AC Accuracy

400 uA - 400 mA: +-(1.5% rdg + 1 dgt)
2A: +-(2% rdg + 4 dgt)
20A: +-(3.5% rdg + 4 dgt)

Input Protection

uA/mA input:
2A/600V fastblow ceramic fuse
20A input:
20A/600V fastblow ceramic fuse

Max. Burden Voltage

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

Resistance

 

Ranges

400 Ω, 4 kOhm, 40 kOhm, 400 kOhm, 4 MOhm, 40 MOhm

Resolution

100 mΩ, 1 Ohm, 10 Ohm, 100 Ohm, 1 kOhm, 10 kOhm

Accuracy

400 Ω: +-(1% rdg + 4 dgt.)
4 kΩ to 4 MOhm: +-(0.8% rdg + 4 dgt.)
40 MΩ: +-(2% rdg + 5 dgt.)

Open Circuit Voltage

0.6 VDC typ. (3.2 VDC on 400 Ω range)

Overload Protection

 

Diode Test

Tested at 1 mA, 3.2 VDC max. typ.
+-(1.5% rdg + 3 dgt.) accuracy

Transistor Test (hFE)

hFE range: 0 - 1000
hFE base current: 10 uA DC

Capacitance

 

Ranges

4 nF, 40 nF, 400 nF, 4 uF, 40 uF

Resolution

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

Accuracy

+-(3% rdg + 4 dgt.)

Test Voltage

< 3.5V

Overload Protection

500 VDC or AC rms

Frequency

 

Ranges

4 kHz, 40 kHz, 400 kHz, 4 MHz

Resolution

1 Hz, 10 Hz, 100 Hz, 10 kHz

Accuracy

+-(0.1% rdg + 2 dgt.)

Sensitivity

250 V rms min. on 10 Hz to 1 MHz
500 mV rms min. on 1 MHz to 4 MHz

Minimum Pulse Width

> 2 us

Duty Cycle Limits

> 30% & <70%

Minimum Input Range

 

Overload Protection

500 VDC or AC rms

Logic Test

 

Logic Threshold

Hi=2.8+-0.8V, 0=0.8 +-0.5V

Frequency Response

20 MHz

Pulse Width

25 ns

Pulse Limits

> 20% and < 80%

Indication

40m sec beep at logic 1 (Hi)

Overload Protection

500 V DC or AC rms

Temperature

 

Range, Resolution

Does not apply

Accuracy

 

Duty Cycle

 

Range, Resolution

Does not apply

Accuracy (5V logic)

 

Minimum Pulse Width

 

Frequency Range

 

Overload Protection

 

General

 

Display

4000 count, 3 3/4 digit LCD

Polarity

Automatic, positive implied, negative polarity indication

Operating Temperature

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

Dimensions (HxWxD)

7.8x3.5x1.57'' (198x90x40 mm)

Weight

11.3 oz. (320g)

Three Year Warranty

Accessories

SUPPLIED: 9V Battery, Test Leads, Instruction Manual, Thermocouple Probe (Model 390)
OPTIONAL: TL-2A Deluxe Test Leads, TL-3 Accessory Tip Kit (for TL-2A), PR-28A High Voltage Probe (40kVDC), TL-130A General Purpose DMM Kit
Carrying Case (not included): LC-29B

*10 A continuous, 20A for 30 seconds max.