American Magnetics 420 Power Supply Programmer - Manual (Page 53)

Rev. 7 35
Installation
Power-Up Procedure
18. Reset the stability setting and ramp rate of the Model 420 to an
appropriate value for the magnet to be operated. Then turn off the
Model 420.
19. Remove the short from the power supply leads and connect the
leads to the vapor-cooled current leads of the magnet.
After successful completion of this test of the Model 420 and power supply
system, the system is ready for operation with a superconducting magnet.
Refer to the ramping function example presented on page 57 for a
discussion of the various available ramping methods.