16
13.4 To recover this function, long-press the
US B
button or insert the USB module.
13.5 The USB communication software can be downloaded from the official website of Limit (www.
limit-tools.com).
ELECTRICAL SPECIFICATIONS
Accuracy: ± (a% of reading + b digits).
Ambient temperature: 23°C ± 5°C (73.4°F ± 9°F) Relative humidity:
≤
75%
Caution:
To ensure measurement accuracy, the operating temperature should be within 18°C~28°C and the
fluctuation range should be within ±1°C. When the temperature is <18°C or >28°C, add temperature
coefficient error: 0.1 × (specified accuracy)/°C.
1. DC voltage
Range Resolution Accuracy
60.00 mV 0.01 mV ± (0.8%+5)
600.0 mV 0.1 mV ± (0.8%+3)
6.000 V 0.001 V ± (0.5%+3)
60.00 V 0.01 V
± (0.5%+3)
600.0 V 0.1 V
1000 V 1 V ± (1.0%+3)
• Input impedance: About 1 G
Ω
for mV range, about l0 M
Ω
for other ranges
• Accuracy guarantee: 1%~100% of range; short circuit allows least significant digit
≤
5
• Max input voltage: 1000 V (if the voltage is >1000V, the red indicator light will be on and the buzzer
will sound an alarm; if the voltage is >1010 V, the LCD will display “OL”)
• Overload protection: 1000 V
2. AC voltage
Range Resolution Accuracy
60.00 mV 0.01 mV ± (1.2%+5)
600.0 mV 0.1 mV ± (1.2%+5)
6.000 V 0.001 V ± (1.0%+3)
60.00 V 0.01 V ± (1.0%+3)
600.0 V 0.1 V ± (1.0%+3)
1000 V 1 V ± (1.2%+5)
LoZ AC V 600.0 V 0.1 V ± (2.0%+5)
• Input impedance: About l0 M
Ω
• Display: True RMS
• Frequency response: 40 Hz ~ 1 kHz
• The AC crest factor can be
≤
3.0 at 3000 counts, and can only be
≤
1.5 at 6000 counts. The additional
error should be added according to the crest factor for a non-sinusoidal wave, as follows:
a. Add 4% when crest factor is 1~2
b. Add 5% when crest factor is 2~2.5
c. Add 7% when crest factor is 2.5~3
GB
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