Performance Verification 1-7
Voltagereadbackaccuracy
Follow the steps below to verify that Model 2303, 2303B, or 2303-PJ voltage readback accu-
racy is within specified limits. The test involves setting the source voltage to specific values, as
measured by a digital multimeter, and then verifying that voltage readback readings are within
required limits.
1. With the power off, connect the digital multimeter to the Model 2303 OUTPUT
SOURCE terminals, as shown in Figure 1-3. Be sure to observe proper polarity
(SOURCE + to INPUT HI; SOURCE - to INPUT LO).
2. Select the multimeter DC volts function, and enable auto-ranging.
3. Make sure actual voltage readings are being displayed (use DISPLAY), and turn on the
Model 2303 output.
4. Verify voltage readback accuracy for each of the voltages listed in Table 1-3. For each
test point:
• Set the Model 2303 output voltage to the indicated value as measured by the digital
multimeter. Note that it may not be possible to set the voltage source precisely to the
specified value. Use the closest possible setting, and modify reading limits accord-
ingly. When setting the voltage, set the compliance current to 3A.
• Allow the reading to settle.
• Verify that the actual Model 2303 voltage reading is withinthe limits given in the table.
* As measured by digital multimeter. See procedure.
Compliancecurrentaccuracy
Follow the steps below to verify that Model 2303, 2303B, or 2303-PJ compliance current
accuracy is within specified limits. The test involves setting the compliance current to specific
values and determining the actual current by measuring the voltages across a characterized 1Ω
resistor with a precision digital multimeter.
1. With the power off, connect the digital multimeter and characterized 1Ω resistor to the
Model 2303 OUTPUT SOURCE terminals, as shown in Figure 1-3. Be sure to observe
Table 1-3
Voltage readback accuracy limits
Model 2303 output
voltage setting*
Voltage readback limits
(1 Year, 18°C-28°C)
5.00V 4.995 to 5.005V
10.00V 9.992 to 10.008V
14.00V 13.990 to 14.010V
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