29
4-15 Calibrating the D/A in 1
Ω
range of C.R. MODE
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. Then 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. The readout should be 5.00V.
q
Press SHIFT and C.V. MODE, then key in 3, 8, 1,4, and
↵
. Then adjust the POWER SUPPLY until the
DMM display reads 5.00V.
r
When MEMORY indicates “01” and A indicates “CL14”, key in the current reading (no less than 5 digits
including decimal) of the DMM (in unit of “A”) and press
↵
.
s
When MEMORY indicates “02”, key in the current reading (no less than 5 digits including decimal) of the
DMM (in unit of “A”) and press
↵
.
t
When MEMORY indicates “03”, key in the current reading (no less than 5 digits including decimal) of the
DMM (in unit of “A”) and press
↵
.
u
When MEMORY indicates “04”, key in the current reading (no less than 5 digits including decimal) of the
DMM (in unit of “A”) and press
↵
.
Note:
Applied instruments -- POWER SUPPLY (8V, 75A); DMM (5 1/2 digits)
Applied situation -- The readings of C.R. MODE are not reliable.
