Service Guide 5
U8001A/U8002A User’s and Service Guide 45
Test Consideration
For optimum performance, all procedures should comply with
the following recommendations:
• Assure that the calibration ambient temperature is stable
and between 20 °C and 30 °C. Ideally the calibration should
be performed at 25 °C ±1 °C.
• Assure ambient relative humidity is less than 80%.
• Allow one hour warm up period by power on the power
supply. During warm up period, set the power supply to
maximum programmable voltage and current. Then, enable
the output.
• Keep the test setup connection cables as short as possible.
Resistive Load (R
L
) • 10 Ω/90 W (for U8001A)
• 6 Ω/150 W (for U8002A)
Measures ripple and
noise
PV
Current Monitoring
Resistor (Shunt)
(R
M)
• 0.01 Ω ± 0.1%
• TCR less than 20 ppm/ºC
ISOTEK Co.
Model A-H
Current monitoring
resistor
PV
C
* PV = Performance Verification
† C = Calibration
Table 5 - 2 List of Equipment
Equipment Requirement(s) Recommended Model Purpose Used
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