GW Instek PEL-300 - Manual (Page 29)

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4-11 Calibrating the D/A in 60A range of W SET
n Set voltage of POWER SUPPLY to 5V and current of it to 75A.
o Connect the output terminal of POWER SUPPLY to a DMM in 75A 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 and C.V. MODE, then key in
3, 8, 1, 0, and
↵ .
q Adjust the POWER SUPPLY until t he DMM display reads 5.00V.
r When MEMORY indicates “01” and A indicates “CL10”, the execution will be proceeded automatically by
the pre-set program without key-in process.
Note: Applied instruments -- POWER SUPPLY (8V, 75A); DMM (5 1/2 digits)
Applied situation --The POWER SET in 60A range is not reliable.
4-12 Calibrating the reference voltage in 1
Ω range of C.R. MODE
n Set voltage of POWER SUPPLY to 17V and current of it to 1A.
o Connect the output terminal of POWER SUPPLY to the input terminal of the electronic load. Hook up a
DMM in 200V range with the input terminal of the load. Press SHIFT and C.V. MODE, then key in 3, 8,
1, 1, and
↵. Pursue a reading of 17.00V from the DMM by adjusting the POWER SUPPLY.
p Measure TP1 of PCB with another DMM in 20V range.
q When MEMORY indicates “01” and A indicates “CL11”, key in the voltage reading of TP1 (no less than 6
digits including decimal) of the DMM (in unit of “V”) and press
↵ .
r When MEMORY indicates “02”, key in the voltage reading of TP1 (no less than 7 digits including
decimal) of the DMM (in unit of “V”) and press
↵ .