本月特价 热卖产品 货到付款 现场演示 延长保修 终身维修
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Specifications |
Model 389B |
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Volts |
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DC Ranges |
400 mV, 4V, 40V, 400V, 1000V |
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AC Ranges |
400 mV, 4V, 40V, 400V, 750V |
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Resolution |
100uV, 1 mV, 10 mV, 100 mV, 1 V |
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DC Accuracy |
+-(0.25% rdg + 2 dgt) |
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AC Accuracy |
400 mV: +- (1.2% rdg + 5 dgt) |
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50 Hz - 100 Hz |
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>10% of range at 200mV range |
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Overload Protection |
1100 VDC or AC rms |
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Input Impedance |
40V - 1000V: 9.1MΩ |
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Current |
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Ranges |
400 mA, 4 mA, 40 mA, 400 mA, 2A, 20A* |
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Resolution |
100 nA, 1 uA, 10 uA, 100 uA, 1 mA, 10 mA |
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DC Accuracy |
400 uA - 400 mA: +-(1% rdg + 1 dgt) 2A: +-(1.5% rdg + 1 dgt) 20A: +-(3% rdg + 3 dgt) |
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AC Accuracy |
400 uA - 400 mA: +-(1.5% rdg + 1 dgt) 2A: +-(2% rdg + 4 dgt) 20A: +-(3.5% rdg + 4 dgt) |
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Input Protection |
uA/mA input: 2A/600V fastblow ceramic fuse 20A input: 20A/600V fastblow ceramic fuse |
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Max. Burden Voltage |
600mV (900 mV on 2A, 20A ranges) |
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Resistance |
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Ranges |
400 Ω, 4 kOhm, 40 kOhm, 400 kOhm, 4 MOhm, 40 MOhm |
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Resolution |
100 mΩ, 1 Ohm, 10 Ohm, 100 Ohm, 1 kOhm, 10 kOhm |
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Accuracy |
400 Ω: +-(1% rdg + 4 dgt.) 4 kΩ to 4 MOhm: +-(0.8% rdg + 4 dgt.) 40 MΩ: +-(2% rdg + 5 dgt.) |
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Open Circuit Voltage |
0.6 VDC typ. (3.2 VDC on 400 Ω range) |
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Overload Protection |
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Diode Test |
Tested at 1 mA, 3.2 VDC max. typ. +-(1.5% rdg + 3 dgt.) accuracy |
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Transistor Test (hFE) |
hFE range: 0 - 1000 hFE base current: 10 uA DC |
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Capacitance |
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Ranges |
4 nF, 40 nF, 400 nF, 4 uF, 40 uF |
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Resolution |
0.1 pF, 1 pF, 10 pF, 100 pF, 1 nF |
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Accuracy |
+-(3% rdg + 4 dgt.) |
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Test Voltage |
< 3.5V |
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Overload Protection |
500 VDC or AC rms |
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Frequency |
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Ranges |
4 kHz, 40 kHz, 400 kHz, 4 MHz |
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Resolution |
1 Hz, 10 Hz, 100 Hz, 10 kHz |
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Accuracy |
+-(0.1% rdg + 2 dgt.) |
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Sensitivity |
250 V rms min. on 10 Hz to 1 MHz 500 mV rms min. on 1 MHz to 4 MHz |
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Minimum Pulse Width |
> 2 us |
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Duty Cycle Limits |
> 30% & <70% |
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Minimum Input Range |
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Overload Protection |
500 VDC or AC rms |
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Logic Test |
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Logic Threshold |
Does not apply |
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Frequency Response |
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Pulse Width |
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Pulse Limits |
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Indication |
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Overload Protection |
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Temperature |
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Range, Resolution |
Does not apply |
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Accuracy |
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Duty Cycle |
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Range, Resolution |
Does not apply |
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Accuracy (5V logic) |
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Minimum Pulse Width |
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Frequency Range |
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Overload Protection |
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General |
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Display |
4000 count, 3 3/4 digit LCD |
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Polarity |
Automatic, positive implied, negative polarity indication |
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Operating Temperature |
32 0 to 122 0 (0 0 to 50 0 C), 0 to 70% R.H. |
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Dimensions (HxWxD) |
7.8x3.5x1.57 (198x90x40 mm) |
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Weight |
11.3 oz. (320g) |
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Three Year Warranty | |
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Accessories | |
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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 | |
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*10 A continuous, 20A for 30 seconds max. | |
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