Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 106)

SetupTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments 106
If the password feature is enabled, then when entering either Calibration or Setup Mode,
the default password displayed will be 000, and the new password must be input.
Example: If all passwords are enabled, the following control button sequence would be
required to enter the SETUP menu: