CEN-TECH ITEM 98674 Operation Manual page 11

DIGITAL MULTIMETER
3.2.7 Frequency
Range Resolution
9.999Hz 0.001Hz
99.99Hz 0.01Hz
999.9Hz 0.1Hz
9.999kHz 1Hz
99.99kHz 10Hz
199.9kHz 100Hz
>200kHz
- by Hz range:
Measurement range: 0 ~ 200kHz
Input voltage range: 0.5V – 10V rms AC (higher input
voltage at higher frequency)
Overload protection: 250V DC or rms AC
- by V range:
Measurement range: 0 ~ 40kHz
Input voltage range: 0.5V – 750V rms AC (higher input
voltage at higher frequency)
Input Impedance: 10M
Max. input voltage: 1000V DC or 750V rms AC
- by A, mA or A range:
Measurement range: 0 ~ 40kHz
Input current range: ≥ 1/4 range rms AC (higher input
voltage at higher frequency)
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SPECIFICATION NTS
Accuracy
2 .0% of reading + 5 digits
（ ）
（ 1 .5% of reading + 5 digits ）
（ 2 .0% of reading + 5 digits ）
for reference only
DIGITAL MULTIMETER
- Max. input current:
mA jack （ A ranges ） : 4mA,
mA jack （ m A ranges ） : 400mA,
10A jack: 10A
- Overload Protection:
A 、 m A ranges: resettable fuses F1 500mA/250V
10A range: F2 10A/250V fuse (quick acting).
NOTE:
When measuring frequency, the range by Hz range is larger
than that by the Hz of voltage range or current range, but the
value measured beyond the range is for reference only.
3.2.8 Duty
Range Resolution
0.1 - 99.9% 0.1%
- By Hz range:
Frequency response: 0 ~ 200kHz
Input voltage range: 0.5V – 10V rms AC (higher input
voltage at higher frequency)
Overload protection: 250V DC or rms AC (higher input
voltage at higher frequency)
- By V range:
Frequency response: 0 ~ 40kHz
Input voltage range: 0.5V – 600V rms AC (higher input
voltage at higher frequency)
SPECIFICATION NTS
Accuracy
3.0%
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