4-10 INITIAL OPERATION
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• Use the white Select button on the Discharge Power Supply to se-
lect Volts. Turn the knob on the Discharge Power Supply until the
discharge voltage is set to 150 volts as indicated on the Discharge
Volts display.
• Press the white Enable/Standby button on the Keeper Power Sup-
ply. And wait a couple of seconds for the keeper to start the hollow
cathode as indicted by the Keeper Amps display reading 1.5 amps.
• Reduce the
fl
ow to gas channel 4 to 10 sccm.
• Press the white Enable/Standby button on the Emission Power Sup-
ply.
• Press the white Enable/Standby button on the Discharge Power
Supply.
• Adjust the gas
fl
ow for channel 1 using the Gas Adjust Knob on the
Auto Controller until the discharge current is approximately 2.5 A.
• Operate the ion source for at least 10 minutes to clean any contami-
nates from the ion source that may have been introduced while at
atmosphere.
• The discharge current will vary slightly during this time. Adjust the
gas
fl
ow after the 10 minutes to obtain a discharge current of ap-
proximately 2.5 A.
• At this point the operating conditions can be saved as a program to
be used later in the Auto Gas mode or the Manual Gas mode. To do
this press and hold the white Acquire Setpoints button for two sec-
onds. This saves the new parameters to the active program.
• Stop operation by putting the discharge, emission and keeper pow-
er supplies into Standby in that order by pressing the white Enable/
Standby button on each controller.
• Put the gas
fl
ow into Standby by pressing the white Enable/Standby
button on the auto controller.
4.3.3 Manual Gas Mode
