13
（
FF630mA/250V),20A measuring range fuse
（
FF20A/250V)
- Maximum input current
：
mA gear
：
600mA DC or AC
RMS
；
20A gear
：
20A DC or AC RMS
；
When the measured current is greater than 5A, the
continuous measurement time is not longer than 15
seconds, after measuring the current measurement to be
stopped for more than 1 minute.
3.2.6 Frequency
Measuring
Range
Resolution
Accuracy
9.999Hz 0.001Hz
±（
1.0% re 3
digits
）
99.99Hz 0.01Hz
999.9Hz 0.1Hz
9.999kHz 0.001kHz
99.99KHZ 0.01kHZ
999.9KHZ 0.1KHZ
9.999MHZ 0.001MHZ
- Overload protection
：
250V DC or AC
（
RMS
）
- Input voltage range
：
200mV~10V ac
（
As the measured
frequency increases, the input voltage should also
increase
）
3.2.7
Duty Ratio
Measuring
Range
Resolution
Accuracy
