9
Fuse protection
：
uA
、
mA Gear fuse:FF630mA/250V; A
Gear fuse: FF20A/250V
Working height
：
Max 2000m
Monitor
：
6000 counts LCD monitor.
Maximum display value
：
5999 digits
Polarity indication: automatic indication, '-' indicates
negative polarity.
Over-range display: '0L' or '-0L'.
Sampling time: about 3 times / second
Unit display: a function, power unit display.
Automatic power off time: about 15 minutes when no
signal
Power: DC 9V
Battery type: 6F22 9V battery
Battery under-voltage indication
：
LCD display
.
Temperature coefficient: less than 0.1
×
accuracy /
℃
Working temperature: 18
℃
~ 28
℃
Storage temperature: -10
℃
~ 50
℃
Size: 190 (L) × 90 (W) × 50 (H) mm
Weight: about 380g (including battery)
3.2 Technical Specifications
Ambient temperature
：
23
±
5
℃
Relative humidity<75%
3.2.1
True RMS zero input characteristics
3.2.1.1 To test sine wave signal measurement, the True
RMS measurement method makes less error than
traditional way of average response.
3.2.1.2 The True RMS meter measures the sine wave
