The LCD will show the zero value on both up & down display.
For example :
Bar
.
0.03
3) Still hold the " Hold Button " & the " Max./Min. Button ",
at same time push the " Zero Button " ( 4-6, Fig. 1 ) once
a while, the display will flash one time & return to zero as :
Bar
.
0.00
4) Release both of the " Hold Button " & the " Max./Min.
Button ", then power off. Now the new zero value will
memorize to the circuit automatically.
8-2 Gain calibration ( Span adjust )
1) Set up the whole meter system are ready measurement,
refer the above " 6. MEASURING PROCEDURES ".
Turn on the meter and allow it to warm up for two minutes.
Should zero the meter by push the " Zero Button ".
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