GW Instek PEL-300 - Manual (Page 22)

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4. CALIBRATION PROCEDURES
Instruments: 2 sets of DMM(digital multiple meters with 5 1/2 digits);
3 sets of POWER SUPPLY(60V, 6A; 8V, 75A; and 18V, 20A );
1 set of COUNTER (frequency counter).
4-1 Adjusting the reference voltage of C.V. MODE
n Press SHIFT and C.V. MODE, then key in 3, 8, 0, 1, and ↵ .
o When MEMORY indicates “01” and A indicates “CL01”, short the input terminal of the electronic load and
press
↵ .
p When MEMORY indicates “02”, set the voltage of POWER SUPPLY to around 60V and the current of it to
0.8A.
q Connect the output terminal of POWER SUPPLY to the input terminal of the electronic load.
r Test the input terminal of load by the 200V range of a DMM. Adjust the POWER SUPPLY until the DMM
display reads 60.00V. Adjust SVR401 to make the voltage of load to be 60.00V.
s Press ↵ .
Note : Applied instruments -- POWER SUPPLY (60V, 6A); DMM (5 1/2 digits)
Applied situation -- Voltage readings of the electronic load are not consistent with the true values.