Checkline MK-720 - Manual (Page 12)

№ Displayed item
Discharge component rate
(Intensity rate of double frequency (of power supply) to total intensity)
Converted sound pressure of double frequency (of power supply)
Level meter(for total
ultrasound)
10 step display at measuring range( )
Current measuring range (L, M, H)
AUTO range indicator(displayed at Auto range setting)
Range over indicator(displayed at range excess at measuring range)
Rate excess of double frequency (from preset alarm level)
Frequency of currently measuring power supply
Type of memory data
([L]: Rate of double frequency Converted rate from ultrasound to sound pressure of
double frequency [W]: Waveform, FFT spectrum)
Index number of data which will be memorized next.
Can be chosen by pushing “L” and “W” button.
Memory indication (It indicates that there are memorized data at index number
which is currently displayed.)
Battery life indicator
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
： Full
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
： Low battery
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
： Almost empty. Please change battery.
Current time 24 hour clock
What is double frequency?
It means spectrum component of frequency which is twice of power supply frequency (100Hz or 120Hz).
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1.2 How to set dry battery
Unscrew grip end cap .
Snap off wire from battery holder.
Pull out battery holder and set 4 AA batteries.
Set batteries according to guidance on holder, not to make
mistake about polarity (+,-).
Set battery holder into grip and connect wire. And set grip end cap.
Attention