Calibration
4-5
4.2.2 Current Measurement Calibration
Users can enter CALIBRATION CHOICE page after pressing password, see 4.2. Then,
press
2 , ENTER, to do the current measurement calibration.
In above step A of CURRENT MEAS. ACCURACY CALI., the display shows the offset of Iac
and Idc measured by AC source. They are produced by internal components. Wait two
seconds then press
ENTER
, then Iac = 0.00A, Idc = 0.00A.
Then press SHIFT, then to change to next step.
In above step B of CURRENT MEAS. ACCURACY CALI., press ENTER then AC source will
output 12.5VAC. The user should apply suitable load to output, to make the output current
measured by current meter (or power analyzer) be about 1.6A. If the output current is ok
after applying load, press
ENTER, then AC source will output 125VAC. The output current
will be 10 times of step B, 16A. Key in the exact value of current measured by current meter.
Step C is the final step of CURRENT MEAS. ACCURACY CALI. Press
PAGE/EXIT
to exit
that page. Then display will show as below. Press
ENTER
to save the calibration result.
CALIBRATION CHOICE = 2
1. V OUT AND MEAS. 2. I MEAS.
3. EXT Vref.
1. CURRENT MEAS. ACCURACY CALI 150V RNG
A. WAIT TWO SECONDS THEN ( ENTER )
Iac = 0.00 A Idc = 0.00 A
1. CURRENT MEAS. ACCURACY CALI 150V RNG
B. ( ENTER ) THEN CHECK CURRENT IS 1.6A
C. ( ENTER ) THEN KEYIN CURRENT MEAS. 16A
0.00 A
Press ( ENTER ) to save .
Press ( PAGE/EXIT ) not to save .