28
4-14 Calibrating the D/A in 100
Ω
range of C.R. MODE
n
Set voltage of POWER SUPPLY to 40V and current of it to 6.2A.
o
Connect the output terminal of POWER SUPPLY to a DMM in 20A 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 200V range of a DMM. Press SHIFT and C.V. MODE, then key
in 3, 8, 1, 3, and
↵
. Adjust the POWER SUPPLY until the DMM display reads 40.
q
When MEMORY indicates “01” and A indicates “CL13”, key in the current reading (no less than 6 digits
including decimal) of the DMM (in unit of “A”) and press
↵
.
r
When MEMORY indicates “02”, key in the current reading (no less than 6 digits including decimal) of the
DMM (in unit of “A”) and press
↵
.
s
When MEMORY indicates “03”, key in the current reading (no less than 6 digits including decimal) of the
DMM (in unit of “A”) and press
↵
.
t
When MEMORY indicates “04”, key in the current reading (no less than 6 digits including decimal) of the
DMM (in unit of “A”) and press
↵
.
Note:
Applied instruments -- POWER SUPPLY (60V, 6A); DMM (5 1/2 digits)
Applied situation -- The readings of C.R. MODE are not reliable.
