12
Table 2-2. Calibration Procedure
TEST TESTED
VARIABLE
TEST POINTS TEST SEQUENCE AND ADJUSTMENTS EXPECTED
RESULTS
Meter F/S
Adjust.
Meter Ref.
Voltage
A2J3 pin 6 ( + )
M ( - )
a. Connect DVM across test points and turn on
ac power.
b. Adjust A2R24 to obtain the voltage range
specified in the results.
0.5V ± 50µV
Resistance
Programming
F/S
Adjust.
Prog. Voltage VP ( + )
P ( - )
a. Connect a 2KΩ 0.01%, ¼W programming
resistor and DVM between test points.
b. Set MODE switch as in Figure 2-1 and turn on
ac power.
c. Adjust A2R23 to obtain the voltage range
specified in the results.
2.5V ±4mV
V-MON
Zero
Adjust.
V-MON VM ( + )
M ( - )
a. Set voltage and current controls to minimum
settings.
b. Disable power supply as in Initial Setup step i.
c. Short circuit output terminals and connect the
DVM between test points. Turn on power
supply.
d. Adjust V-MON Zero trim pot A2R22 to
voltage range specified in the results.
0 ± 20µV
Common
Mode
Adjust.
Residual
Output
Voltage
VM( + )
VM ( + )
M ( - )
a. Set voltage and current controls to minimum.
b. Disable power supply as Initial Setup step i.
c. Turn on ac power and record the initial
voltage (IR) with DVM across test points.
d. Remove the - S( + ) and – OUT( - ) and
connect a 1Vdc power supply between - S( + )
and – OUT( - ). See Figure 2-1.
e. Adjust A2R21 to the voltage range specified.
f. Remove the 1V supply and replace jumpers.
IR ± 20µV
I-MON
Zero
Adjust.
I-MON IM ( + )
M (-)
a. Set voltage and current controls to minimum.
b. Turn on ac power.
c. Connect DVM across test points and adjust
I-MON Zero trim pot A2R8 as shown in
results.
0 ± 100µV
(6023A)
0 ± 25µV
(6028A)
I-MON
F / S
Adjust.
I-MON IM ( + )
M ( - )
a. Perform I-MON Zero Adjust before
proceeding .
b. Connect a 0.001Ω 0.05% (6023A), 0.100Ω
0.05% (6028A) current monitoring resistor
Rm across the output terminals.
c. Turn on ac power and using the “Display
Setting”, set current control to 30A (6023A),
10A (6028A), and voltage control to 5V.
d. Connect DVM across test points and take an
initial reading (IR).
IR*
Rm ( + )
Rm ( - )
e. Connect DVM across Rm monitoring
terminals and adjust A2R9 as shown in the
results.
0.006 IR*
+40µV (6023A),
0.200 ± 1µV
(6028A)
*IR = Initial Reading