3.1.5 Auto negative polarity indication: Displaying “-”.
3.1.6 Lack of battery power: Displaying “ ”.
3.1.7 Auto power OFF After turning on the instrument and without turning the
function switch or pressing any button, the instrument will automatically enter
into sleep mode after 10 minutes,to save battery power.when it is in the sleep
mode you can press the SELECT key to wake up the instrument. If you
don't need the automatic sleep mode, you should hold down the DH key to
turn on the instrument, and then the symbol " " will not be display on
the LCD.
3.1.8 Work environment: 0°C-40°C, 75%RH.
3.1.9 Storage environment : -10°C-60°C, 85%RH. 3.1.10 battery : 3V (AA1.5V×2)
3.1.11 External dimensions: 249
(
L
)
×89
(
W
)
×38
(
H
)
mm
3.1.12 Weight: About 360g (including battery’s weight)
3.2 Technical specifications
Accuracy
：
±(% r digit); calibration term is one year. Ambient temperature
: 23°C±5°C; Ambient humidity: ≤70%RH
3.2.1 DCV
3.2.2 ACV
Frequency
：
10Hz~1kHz (Warning
：
Frequency for square wave accuracy is specified
from 10Hz to 400Hz)
，
display
：
TRUE RMS(sinusoidal waveform RMS calibration)
。
Overload protection:250V at mV range, DC1000V or peak value AC1000V at V range
3.2.3 ACA
AC Conversion Type
：
TRUE RMS responding, calibrated readings consistent with
sinusoidal waveform RMS. Frequency Range:50~60Hz
。
Range
Accuracy
Resolution
Input impendance
400mV
±(0.8%+2d)
0.1mV
About 10MΩ
4V
0.001V
About 10MΩ
40V
0.01V
About 10MΩ
400V
0.1V
About 10MΩ
1000V
±(1%+2d)
1V
About 10MΩ
Range
Accuracy
Resolution
Input impendance
400mV
±(1.0%+5d)
0.1mV
About 10MΩ
4V
0.001V
About 10MΩ
40V
0.01V
About 10MΩ
400V
0.1V
About 10MΩ
700V
±(1.5%+5d)
1V
About 10MΩ
Range
Accuracy
Resolution
4A
±(2%+5d)
1mA
40A
10mA
400A
100mA
10
00A
1A
