Teledyne 3000TA - General purpose trace oxygen analyzer - Manual (Page 36)

4 Operation Model 3000TA
4-4 Teledyne Analytical Instruments
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 an unauthorized tampering with
analyzer settings.
• More: Select and enter More to get a new screen with additional
subfunctions 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
4.3.1 Tracking the Oxygen Readings during Calibration
and Alarm delay
The user has the option of setting the preferenc as to whether the analog
outputs track the display readings during calibration or not. To set the prefer-
ence, press the System key once and the first System menu will appear in the
VFD display:
TRAK/HLD Auto-Cal
PSWD Logout More
TRAK/HLD should be blinking. To enter this system menu press the
Enter key once:
Output Sttng: TRACK
Alarm Dly: 10 min
Or
Output Sttng: HOLD
Alarm Dly: 10 min