PS2520 Series Adjustment Procedures
Handheld and Benchtop Instruments Basic Service
63
11. Enter the DMM reading on the power supply keypad and press (
).
12. Verify that the power supply readout displays cL20, indicating current offset
calibration.
13. Configure the DMM to measure 2 amperes DC.
14. Enter the DMM reading on the power supply keypad and press (
). Verify
that the power supply readout displays cL2F, indicating that the current
offset calibration is complete.
15. Set the DMM to the 10 A range and press (
) on the power supply. Verify
that the power supply readout displays cL21 indicating current full-scale
calibration.
16. Enter the DMM reading on the power supply keypad and press (
). Verify
that the power supply readout displays cL2F, indicating that the current
full-scale calibration is complete.
17. Disconnect the DMM from the power supply.
18. Press (
) on the power supply and verify that the readout displays cL30,
indicating overvoltage protection offset calibration.
19. Wait 10 seconds and verify that the readout displays cL31, indicating that
the overvoltage protection full-scale calibration is running. Wait another 10
seconds for the readout to return to normal. The calibration is complete.
See Table 10 for a list of partial calibrations; then proceed with the following
steps.
NOTE. Do not remove the instrument cover unless you intend to perform a
voltage full-scale calibration.
1. Select the power supply output to calibrate: press (SHIFT) <OUT 1,
OUT 2, or OUT 3>. For a Parallel Output calibration, select OUT 2.
2. Press (SHIFT) CURRENT
.
3. Enter a calibration password on the keypad:
PS2520 & PS2520G: enter 2520 ( )
PS2521 & PS2521G: enter 2521 (
)
4. Verify that the power supply readout displays cL00, indicating calibration
mode.
5. Configure the DMM function and range as outlined in table 12.
Partial Calibration
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