Technical data

1 Calibration Procedures
Performance Verification Tests
14 U8030A Series Service Guide
9 The difference between the multimeter readings in step 7
and step 8 should be within the limit of
• 5 mV for U8031A,
• 8 mV for U8032A, and
• ≤ 5 mV for Output 3.
CV noise
CV noise is specified as the RMS or peak- to- peak output
voltage in the frequency range from 20 Hz to 20 MHz.
Procedure:
1 Power off the power supply, and connect the output to be
tested as shown in Figure 1- 3 to a differential amplifier
and load resistor (5 Ω for U8031A, 20 Ω for U8032A, and
1.67 Ω for Output 3).
2 Power on the power supply.
3 When the display is in the limit mode, program the
output voltage to its full rated value (i.e., 30 V for
U8031A, 60 V for U8032A, and 5 V for Output 3) and
output current to the maximum programmable value.
4 Enable the output of the power supply.
5 Ensure that the power supply is in the CV mode. If not,
adjust the resistive load so that the output current drops
slightly until the power supply is in the CV mode.
Line voltage, Vac
Low line
voltage limit, Vac
High line
voltage limit, Vac
10090110
115 104 127
230 207 253