These are NOT the cathodes used as interlocks for the high voltage.

For both end stations:
I logged into the Beckhoff computer. I went to the 'CoE - Online' tab for the Inficon gauge labeled 'Pressure Gauge NEG (BPG 402)' in the system manager. In index FB44:01, 'Emission ON / OFF Command: Command', I entered 00 02 in the Binary box. I then verified that index 6015:05, 'Input Hot Cathode Ion: Emission Status Off/On Module 2' had changed from TRUE to FALSE.

This was done around 11:35 PDT.

Richard will go to the end stations and verify that they are off on Monday.