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1. Ensure gun cavity tuners are in force mode
2. Set force to approximately 500 N

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Run Initialization sequencer

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• Turn follow PRL ‘OFF’
• Set phase rotation to 0
• Set Duty Cycle to 5%
• Set PW to 20 ms
• Set Frequency tracking ‘ON’
• Set Gain Phase tracking to ‘ON’
• Turn A&P Feedback Close Loop ‘OFF’
• Set cavity frequency to “cold” (approximately 400 kHz from nominal)
• Turn RF ‘ON’

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Turn RF 'On' in open loop

1. Open ‘Control Loop’ screen
2. Set Clip DAC at: 2500
3. Set DAC to 2000

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Gun SSA Balancing

1. Balance SSAs if reflected power is too high
   • For the gun system reflected power should be less than 20 W per channel

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Go to nominal amplitude - iterate steps 1 - 4 according to table

1. Close the Amp/Phase feedback loop
2. Adjust the clip DAC setting
3. Increase the amplitude in volts
4. Adjust the clip DAC setting as needed

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Increase the duty cycle

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Monitor the I vs. Q and assist the gain phase tracking loop if necessary.

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Activate the gun cavity tuners

1. Drive the gun cavity toward nominal frequency by adjusting tuners in force mode
2. Adjust in 50 N steps with 15 – 20 seconds per adjustment
3. Stop when cavity RF frequency is within 180 Hz of nominal
4. Expect the final force to be 3000-5000 N

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Stop tracking cavity frequency

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If the landing frequency from the process above is not 0 Hz from the desired nominal frequency, then adjusted the drive to nominal in 180 Hz steps

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Lock RF to the Phase Reference Lin (PRL)

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• Open A&P feedback loop
• Initiate following the PRL
• Close A&P feedback loop

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Transition to CW RF

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The CW Power Ratio should be set to 0.005 for this transition

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