GW Instek PEL-300 - Manual (Page 23)

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4-2 Adjusting the reference voltage in 10
Ω∼1kΩ range of C.R. MODE
n Set voltage of POWER SUPPLY to 60V and current of it to 1A.
o Connect the output terminal of POWER SUPPLY to the input terminal of electronic load.
p Press SHIFT and C.V. MODE, then key in 3, 8, 0, 2, and ↵.
q Test the input terminal of load by the 200V range of a DMM. Adjust the POWER SUPPLY until the DMM
display reads 60.00V. Use the 20V range of another DMM to test TP1 of a PCB.
r When MEMORY indicates “01” and A indicates “CL02”, key in the voltage reading (no less than 6 digits
including decimal) of TP1 (in unit of “V”) and press
↵.
s When MEMORY indicates “02”, key in the voltage reading (no less than 7 digits including decimal) of TP1
(in unit of “V”) and press
↵ .
t When MEMORY indicates “03”, key in the voltage reading (no less than 7 digits including decimal) of TP1
(in unit of “V”) and press
↵ .
Note: Applied instruments -- POWER SUPPLY (60V, 6A); DMM (5 1/2 digits)
Applied situation -- The C.R. MODE in 10
Ω∼1kΩ range is not reliable.
4-3 Calibrating the D/A in 10
Ω range of C.R. MODE
n Set voltage of POWER SUPPLY to 17V and current of it to 20A.
o Connect the output terminal of POWER SUPPLY to a DMM in 20A range in series. Hook up the DMM
with the input terminal of the electronic load.
p Test the input terminal of the load by the 20V range of a DMM. Press SHIFT & C.V. MODE, key in 3,8,0,3,
and
↵. Then adjust the POWER SUPPLY until the DMM display reads 17.00V.