Teledyne 3000TA-XLEU - Trace oxygen analyzer - Manual (Page 56)

Operation 3000TA-XL-EU
Teledyne Analytical Instruments 40
4.3 The System Function
The sub functions 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
the instrument.
 Show Negative: The operator selects whether the 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.