Datascope System 98 Service Manual page 216

4.8.11.5 Autofill Calibration
This test simplifies the autofill calibration process. The routine is identical to the
Autofill Test (section 4.8.11.1) except chat after filling the Safery Disk with
helium it is left in a pressurized state by activating the KS (pressure) solenoid.
See section 7 for the complete calibration procedure using this test.
4.8.11.6 Motor Calibration / Test
This test verifies the integrity of the motor speed circuitry on the Main board, the
Motor Controller board, the DC motor and the associated cables and connectors.
The test is separated into four parts.
Attempt to set the motor speed to 1600 RPM by applying 8 volts to the
Motor Controller board.
Verify the actual speed is within 20 percent of 1600 RPM.
Re-adjust the motor speed by calculating the necessary scale factor based on the
actual speed.
Verify that the adjusted speed is within 3 percent of 1760 RPM.
Results can be printed to the recorder by pressing the PRINT STRIP key.
4.8.11.7 Helium Tank Calibration
This test calibrates the helium pressure circuit.
Close the helium tank valve and remove the helium tank from the pump.
Press CHANGE/SELECT to start the text. The helium offset is displayed. If the
offset is too large an "Out of Specification" is displayed. If the offset is within the
limits a "Within Specification" is displayed.
4-26 System 98 Service Manual
Chapter 4, Repair Information