Performance Veri
fi
cation
2.
Set the voltmeter as follows:
a.
Set to measure DC volts.
b.
Set to auto range.
c.
Set to show amps (instead of volts) by multiplying the voltmeter result
by 20.
Press Shift DC V (mX+B).
Use the arrow key to move the cursor to the far right until it is
positioned on the ^.
Press the up range button once so that M=10.00000.
Press the arrow key to move the cursor to the 1’s digit and then press
the up range button once so that M=20.00000.
Press the Enter button and check that the display shows B=0.
Press the Enter button and check that the display shows UNITS.
Use the arrow keys to modify the display to show AMP.
Adjust each letter individually.
3.
Set the electronic load as follows:
a.
Set to Constant Voltage.
b.
Set to the speci
fi
ed voltage for your channel under test (CUT). (See
4.
Set the channel under test (CUT) to 0% of the full scale (FS) output current.
5.
Set the CUT to 100% of the FS output voltage.
6.
Turn the DUT output on.
7.
Enter the voltmeter reading into the table for checking DC current accuracy.
(See Table 20 on page 20.)
8.
Enter the voltmeter reading into the table for checking DC current readback
accuracy. (See Table 21 on page 21.)
9.
Enter the CUT readback current readout into the table for checking current
readback accuracy under the current readout column. (See Table 21 on
page 21.)
10.
Calculate the difference of the two measurements taken in steps 8 and 9.
Enter the absolute value of the calculated value into the difference column of
the table. (See Table 21 on page 21.)
11.
Increase the CUT output current by 25% of the FS output current.
12.
Repeat steps 7 through 11 until you complete testing at 100% of the FS output
current.
40
Series 2200 Multichannel Programmable DC Power Supplies Technical Reference
