Performance Ve rification
Check DC Current Load
Regulation
This check proc
edure uses the same test setup as the previous procedure. (See
Figure 6.)
NOTE. Ensure the warm-up criteria has been met as described in the Performance
Verification Conditions.
For each channel sequentially.
1. Set the voltmeter as follows:
a. Set to measure DC volts.
b. Set to auto range.
c. Set to show amps (instead of v
olts) 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=10.0
0000.
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.
2. Set the electronic load as follows:
a. Set to Constant Voltage.
b. Set to output the minimum test voltage level.
Channel M inim um test voltage
Channel 1
3.0 V
Channel 2
3.0 V
Channel 3
0.6 V
3. Set the channel under test (CUT) to 100% of the FS output current for your
product.
4. Set the CUT to 100% of the FS output voltage for your product.
5. Turn the DUT output on.
44 Series 2200 Multichannel Programmable DC Power Supplies Technical Reference
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