Tecnai on-line help manual -- Options - UT Southwestern

<strong>Tecnai</strong> on-line help Options 148Options Software version 210.11 AutoGun Control (Expert) – (FEG)The AutoGun Control Panel provides access to the extractionlimit as well as the Conditioning procedure.Extraction limitThe filament limit is the value up to which the filament setting can be increased before it stopsautomatically. The value can be adjusted by Expert user and Supervisor.Condition statusIt is not always possible to start the conditioning procedure. The Condition status indicates whyconditioning is not possible (apart from another procedure currently running). If conditioning is possible,the condition status is not visible and the Condition button is enabled.ConditionPressing the Condition button starts or stops the Conditioning procedure. The color of the buttonindicates the status (yellow = active).Condition toThe value for condition to is the goal used by the conditioning procedure. For Experts the suggestedvalue is the maximum high tension plus 5% if an overvoltage is possible (200 and 300kV), otherwise it isthe maximum high tension.Condition delay stepThe condition delay step defines the number of seconds the conditioning procedure will before it takesanother step (subject to the vacuum pressure being low enough).Operate and standby hoursThe FEG Timers control panel displays the date the timers were started (FEG tip installation) and thehours the FEG tip has run in Standby and Operate modes. The timers can be reset only by service.