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A hexadecimal number between 0 and FFFFh is shown on the current
display.
c)
Use the current coarse and fine knobs to adjust the value displayed by the
power supply until the ammeter indicates the closest value to 0 A.
d)
Turn the voltage coarse knob to finish the calibration.
While performing the zero current calibration, the current display will show
Adc.
After the zero current calibration, the message
Done
is shown on the
current display for 1 sec. Then the power supply returns to the Calibration
menu.
5. Full current calibration
To finish the current calibration procedure, you must select the full current
calibration option after the zero current calibration.
a)
Select “I F” for full current calibration and turn the voltage coarse knob.
When you initiate the full current calibration, the CV LED lights up and the
power supply will display:
Voltage display: I F
Current display: ConA
b)
Connect a digital ammeter (BK Precision 5491B or similar instrument) to the
output terminals of the power supply to initiate the full current calibration
procedure. If a digital ammeter is not connected within 30 seconds, the
power supply will abandon the current calibration procedure and will return
to the Calibration menu.
The CV LED indicator will turn off and the CC LED indicator will light on. The
power supply will then display:
Voltage display: I F
Current display: hex number
