Teledyne 3000ZA operating instructions System Function

Trace Oxygen Analyzer Operation

4.3 The System Function

The sub fuctions of the System function are described below. Specific procedures for their use follow the descriptions:

•Auto-Cal: Used to define an automatic calibration sequence and/or start an Auto-Cal.

•PSWD: Security can be established by choosing a 5 digit password (PSWD) from the standard ASCII character set. (See Installing or Changing the Password, below, for a table of ASCII characters available.) Once a unique password is assigned and activated, the operator MUST enter the UNIQUE password to gain access to set-up functions which alter the instrument's operation, such as setting the instrument span or zero setting, adjusting the alarm setpoints, or defining analysis ranges.

•After a password is assigned, the operator must log out to activate it. Until then, anyone can continue to operate the instrument without entering the new password.

•Only one password can be defined. Before a unique password is assigned, the system assigns TETAI by default. This allows access to anyone. After a unique password is assigned, to defeat the security, the password must be changed back to TETAI.

•Logout: Logging out prevents unauthorized tampering with analyzer settings.

•More: Select and enter More to get a new screen with additional sub functions listed.

•Self–Test: The instrument performs a self-diagnostic test to check the integrity of the power supply, output boards and amplifiers.

•Version: Displays Manufacturer, Model, and Software Version of instrument.

•Show Negative: The operator selects whether display can show negative oxygen readings or not.

•TRAK/HLD: The operator sets whether the instrument analog outputs track the concentration change during calibration and sets a time delay for the concentration alarms after calibration

Teledyne Analytical Instruments 31