Keysight E3630A, Operating And Service Manual

Page: 33 / 71

Operating Instructions 3
Keysight E3630A Operating and Service Manual 33
Turn-On Checkout Procedure
1 Connect line cord to power source and turn LINE switch on.
2 Push +6V METER switch and, with no load connected, vary +6 V VOLTAGE
control over its range and check that the voltmeter responds to the control
setting and the ammeter indicates zero.
3 Set the +6V VOLTAGE control to 6 volts and short the +6 V output terminal
to COM (common) terminal with an insulated test lead. The ammeter
should indicate a short-circuit output current of approximately 1.0 A. Remove
the short from the output terminals.
4 Push the +20 V METER switch and turn Tracking Ratio control fully
clockwise to the Fixed position. With no load connected, vary ±20 V VOLTAGE
control
over its range and check that the voltmeter responds to the control
setting and the ammeter indicates zero.
5 Set the ±20 V VOLTAGE control to 20 volts and short the +20 V output
terminal to the COM terminal with an insulated test lead. The
ammeter should indicate a short-circuit output current of 0.55 A ± 5%.
Remove the short from the output terminals.
6 Repeat steps (4) and (5) for –20 V output.
7 Adjust the +20 V output to 20 volts. Then push –20 V METER switch and check
the effect of the Tracking Ratio control on the voltage of the –20 V output. The
–20 V output should be adjustable from less than 0.5 volts to a maximum of
19 to 21 volts.
CAUTION
Before applying power to the supply, check the label on the heat sink to
make certain that the supply's line voltage option agrees with the line
voltage to be used. If the option does not correspond to your line voltage,
refer to paragraph Line voltage option conversion in the service section
before applying power.
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