Data Sheet
Handheld Digital Multimeters
Test Bench
®
Series
High Quality, Ruggedized, Multifunctional
High performance and value priced, the Test Bench
®
Series offers more features for the dollar than other multimeters. In addition to measuring voltage and current,
the meters also measure capacitance, frequency and temperature, and include component test, diode test and logic indicator capabilities. See the chart below for
the meter that best fits your needs. A double injection molded case provides improved grip and protection for the meters.
Features and Benefits
I
I
I
I
I
I
I
I
I
Features
True RMS
Ranging
DCV Accuracy
AC/DC Voltage and Current
Display Digits, Count
Bar Graph
Capacitance Measurement
Transistor Test
Temperature Probe
Logic Probe
Relative Mode
Min/Max Hold
Peak Hold
Data Hold
USB
392 & 393
√
Auto/Manual
0.08%
√
60000, 4 5/6
√
√
-
√
√
√
√
√
√
393 only
391A
√
Manual
0.05%
√
20000, 4 1/2
-
-
-
-
√
-
-
-
√
-
390A
-
Auto/Manual
0.1%
√
4000, 3 3/4
√
√
-
√
-
√
√
√
√
√
389A
-
Auto/Manual
0.25%
√
4000, 3 3/4
√
√
-
-
-
√
√
√
√
-
388B
-
Manual
0.5%
√
4000, 3 3/4
-
√
√
-
√
-
-
-
-
-
Resistance measurement
Frequency measurement
Diode check
Audible continuity
All current ranges fused
Auto power off
Ruggedized case
CATIII 1000 V, (all models)
CATIV 600 V, (392 & 393)
Specifications
Volts
DC Ranges
AC Ranges
Resolution
Basic DC Accuracy
Basic AC Accuracy
Overload Protection
Input Impedance
392 & 393
True RMS reading
600 mV, 6 V, 60V, 600 V, 1000 V
600 mV, 6 V, 60V, 600 V, 750 V
0.01 mV, 0.1 mV, 1 mV, 10 mV, 100 mV
±(0.08% rdg + 5 dgt)
±(1.5% rdg + 20 dgt) 500 Hz -1 kHz
1000 VDC or 750 VAC rms
10 MΩ, 11 MΩ on 6 V range
391A
True RMS reading
200 mV, 2 V, 20 V, 200 V, 1,000 V
200 mV, 2 V, 20 V, 200 V, 750 V
10 µV, 100 mV, 1 mV 10 mV, 100 mV
±(0.05% + 3 dgt)
±(2% + 10 dgt) 500 Hz - 2 kHz
1200 VDC or AC rms
500 VDC/AC rms 15 sec
on 200 mV range
10 MΩ
390A
-
389A
-
400 mv, 4 V, 40 V, 400 V, 1000 V
400 mv, 4 V, 40 V, 400 V, 750 V
100 µV, 1 mV, 10 mV, 100 mV, 1 V
388B
-
±(0.1% rdg + 2 dgt)
±(0.25% rdg + 2 dgt)
±(0.5% rdg + 1 dgt)
±(1.5% rdg +3 dgt) 500 Hz - 1 kHz
1200 VDC or AC rms
500 VDC/AC rms 15 sec
on 200 mV range
10 MΩ
±(1.5% rdg +5 dgt) 500 Hz - 1 kHz
1100 VDC or AC rms
400 mV: >100 MΩ, 4V: 10 MΩ
1000 VDC or peak AC
40 V - 1000 V: 9.1 MΩ
Technical data subject to change
© B&K Precision Corp. 2014
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High Performance DMM
Test Bench
®
Series
Specifications
Current
Ranges
Resolution
DC Accuracy
392 & 393
600 µA, 6000 µA, 60 mA, 400 mA, 20 A*
10 nA, 100 nA, 1 µA, 10 µA, 1 mA
600 µA to 60 mA: ±(0.5% rdg + 10 dgt)
400 mA: ±(1.0% rdg + 10 dgt)
20 A: ±(2.0% rdg + 10 dgt)
600 µA to 400 mA: ±(1.5% rdg + 20 dgt)
20 A: ±(2.5% rdg + 20 dgt)
µA/mA input: 0.5A/100V fast blow ceramic fuse
20A input: 20A/600A fast blow ceramic fuse
500 mV on 600 µA & 60 mA ranges,
2 V on 6000 µA range
600
Ω,
6 kΩ, 60 kΩ, 600 kΩ, 6 MΩ, 60 MΩ
10 mΩ, 100 mΩ, 1
Ω,
10
Ω,
100
Ω,
1 kΩ
600
Ω:
±(0.3% rdg + 20 dgt),
6 kΩ to 6 MΩ: ±(0.3% rdg + 10 dgt),
6 MΩ: ±(1.0% rdg + 10 dgt),
60 MΩ: ±(3.0% rdg + 20 dgt)
-1.2 VDC typical,
-3.0 VDC typical on 600
Ω
range
600 VDC or 600 VAC rms
Tested at 0.5 mA, 2 VDC max. typical
±(2.0% rdg + 10 dgt) accuracy
Does not apply
6 nF 60 nF 600 nF 6 µF 60 µF 600 µF 6 mF
,
,
,
,
,
,
1 pF 10 pF 100 pF 1 nF 10 nF 100 nF 1 µF
,
,
,
,
,
,
6 nF: ±(3% rdg+30 dgt), 60 nF to 600 µF: ±(3%
rdg +10dgt), 6 mF: ±(5% rdg+10 dgt)
<1 V
600 VDC or 600 VAC rms
60 Hz, 400 Hz, 6 kHz, 60 kHz,
600 kHz, 6 MHz, 10 MHz
0.0001Hz, 0.01 Hz, 0.1 Hz, 1 Hz,
10 Hz, 100 Hz, 1 kHz
±(0.1% rdg + 10 dgt)
>100 ns
>25 ns
>30% & <70%
>0 Hz
600 VDC or 600 VAC rms
-
-
-
-
-
-
-58° to +2372°F 0.1F°,
,
(-50°to + 1300°C, 0.1C°)
±(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
5 to 95%, 0.1%
±(2.0% rdg + 10 dgt)
10 µs
40 Hz to 20 kHz
600 VDC or 600 VAC rms
60000 count, 4 5/6 digit LCD
391A
200 µA, 2 mA, 20 mA, 200 mA, 20 A*
10 nA, 100 nA, 1 µA, 10 µA, 1 mA
200 µA to200 mA:±(0.5% rdg + 5 dgt)
20 A: ±(2% rdg + 10 dgt)
200 µA to200 mA:±(1.2% rdg + 10 dgt)
20 A: ±(2.5% rdg + 20 dgt)
390A
389A
388B
400 mA, 4 mA, 40 mA, 400 mA, 2 A, 20 A*
100 nA, 1 µA, 10 µA,100 µA,1 mA,10 mA
400 µA - 400 mA: ±(1% rdg + 1 dgt)
2 A: ±(1.5% rdg + 1 dgt)
20 A: ±(3% rdg + 3 dgt)
400 µA - 400 mA:±(1.5% rdg + 1 dgt)
2 A: ±(2% rdg + 4 dgt)
20 A: ±(3.5% rdg + 4 dgt)
µA/mA input: 2 A/600 V fast blow ceramic fuse
20 A input: 20 A/600 V fast blow ceramic fuse
600 mV (900 mV on 2 A, 20 A ranges)
400 µA, 4 mA, 40 mA, 400 mA, 20 A*
0.1 µA, 1 µA, 10 µA, 100 µA, 10 µA
400 µA - 400 mA:±(1% rdg +
±(1% rdg + 1 dgt)
5 dgt)
±(2% rdg + 3 dgt)
20 A: ±(2% rdg + 3 dgt)
400 µA to 400 mA:±(1.5% rdg + 4 dgt)
20 A: ±(2.5% rdg + 4 dgt)
AC Accuracy
Input Protection
Max. Burden Voltage
Resistance
Ranges
Resolution
Accuracy
µA/mA input:0.5 A/500 V fast blow ceramic fuse
20 A input: 20 A/600 A fast blow ceramic fuse
600 mV (900 mV on 20 A range)
200
Ω;2
kΩ,20 kΩ,200 kΩ;2 MΩ,20 MΩ
10 mΩ,100 mΩ,1
Ω,10 Ω,100 Ω,1
kΩ
200
Ω,
2 MΩ: ±(0.25% rdg + 10 dgt)
2 kΩ to 200 kΩ: ±(0.15% rdg + 3 dgt)
20 MΩ: ±(1.0% + 10 dgt)
3.2 VDC typical
500 mV (2 V on 4 mA, 400 mA ranges)
400
Ω,
4 kΩ, 40 kΩ, 400 kΩ, 4 MΩ, 40 MΩ
100 mΩ, 1
Ω,
10
Ω,
100
Ω,
1 kΩ, 10 kΩ
400
Ω
to 400 kΩ: ±(0.5% rdg + 4 dgt)
4 MΩ: ±(1% rdg + 5 dgt)
40 MΩ: ±(2% rdg + 5 dgt)
-0.45 VDC typ. (-1.2 VDC on 400
Ω
range)
400
Ω:
±(1% rdg + 4 dgt)
4 kΩ to 4 MΩ: ±(0.8% rdg + 4 dgt)
40 MΩ: ±(2% rdg + 5 dgt)
0.6 VDC typ. (3.2 VDC on 400
Ω
range)
Open Circuit Voltage
Overload Protection
Diode Test
Transistor Test (hFE)
Capacitance
Ranges
Resolution
Accuracy
Test Voltage
Overload Protection
Frequency
Ranges
Resolution
Accuracy
Sensitivity
Minimum Pulse Width
Duty Cycle Limits
Minimum Input Range
Overload Protection
Logic Test
Logic Threshold
Frequency Response
Pulse Width
Pulse Limits
Indication
Overload Protection
Temperature
Range, Resolution
500 VDC or 500 AC rms
Tested at 1 mA, 3.2 VDC max. typical
Tested at 1.2 mA, 3.0 VDC max. typical
±(1% rdg + 10 dgt) accuracy
±(1.5% rdg + 3 dgt) accuracy
Does not apply
Does not apply
-
-
-
-
-
Tested at 1 mA, 3.2 VDC max. typical
±(1.5% rdg + 3 dgt) accuracy
hFE range: 0 - 1000,hFE base current:10 µADC
4 nF 40 nF 400 nF 4 µF 40 µF
.
,
,
,
0.1 pF 1 pF 10 pF 100 pF 1 nF
,
,
,
,
±(3% rdg + 4 dgt)
<3.5 V
4 nF 40 nF 400 nF 4 µF 40 µF 400 µF 4 mF 40 mF
.
,
,
,
,
,
,
1 pF 10 pF 100 pF 1 nF 10 nF 100 nF 1 µF 10 µF
,
,
,
,
,
,
,
4 nF: ±(3% rdg+20 dgt) 4 nF to 40 µF: ±(3% rdg +5dgt)
400 µFto 40 mF: ±(5% rdg + 10 dgt)
<1V
500 VDC or AC rms
2 kHz, 20 kHz, 200 kHz
0.1 Hz, 1 Hz, 10 Hz
±(0.1% rdg + 3 dgt)
50 mVrms min. (At>30 & <70% duty
cycle: 400 mVrms min.)
>25 ns
>30% & <70%
2kHz:10Hz:20kHz:>60dgt; 200kHz>60dgt
4 kHz, 40 kHz, 400 kHz, 4 MHz, 40 MHz
1 Hz, 10 Hz, 100 Hz, 10 kHz, 100 kHz
±(0.1% rdg + 3 dgt)
±(0.25% + 4 dgt)
1 Hz - 4 MHz: 1Vrms
4 MHz - 40 MHz: >2 Vrms, <5 Vrms
>25 ns
>30% & <70%
-
-
500 VDC or 500 AC rms
-
-
-
-
-
-
-58° to +2372°F 1F°,
,
(-50°to + 1300°C, 1C°)
±(0.8% rdg + 2°C) -50° - 400°C,
±(1% rdg + 2°C) 400° - 1300°C
-
-
-
-
-
-
4 kHz, 40 kHz, 400 kHz, 4 MHz
1 Hz, 10 Hz, 100 Hz, 10 kHz
±(0.1% + 2 dgt)
250 mVrms min. on 10 Hz to 1 MHz
500 mVrms min. on 1 MHz to 4 MHz
>2 µs
-
Hi: 2.8±0.8 V, Lo: 0.8 ± 0.5 V
20 MHz
25 ns
>20% and <80%
40 ms beep at logic 1 (Hi)
500 V DC or 500 AC rms
Hi: 2.8±0.8 V, Lo: 0.8 ± 0.5 V
20 MHz
25 ns
>20% and <80%
40 ms beep at logic 1 (Hi)
500 V DC or 500 AC rms
-
-
-
-
Accuracy
Duty Cycle
Range, Resolution
Accuracy (5V logic)
Minimum Pulse Width
Frequency Range
Overload Protection
General
Display
Polarity
Operating Temperature
Dimensions (HxWxD)
Weight
Included Accessories
-
-
0 to 90%, 0.1%
±(2.0% rdg + 10 dgt)
10 µs
40 Hz to 20 kHz
500 VDC or 500 AC rms
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4000 count, 3 3/4 digit LCD
14.1 oz. (400 g)
20000 count, 4 1/2 digit LCD
4000 count, 3 3/4 digit LCD with 41 segment analog bar graph
Automatic, positive implied, negative polarity indication
32° to 122° (0˚ to 50˚C), 0 to 70% R.H.
7.8 x 3.5 x 1.57" (198 x 90 x 40 mm)
11.3 oz. (320 g)
Three Year Warranty
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
2
v022614
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