Teledyne 3000TA-EU - General purpose trace oxygen analyzer - Manual (Page 46)

Operation 3000TA- EU
Teledyne Analytical Instruments
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(See Installing or Changing a 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 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 the 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 Oxygen Readings During Calibration and
Alarm Delay
The user has the option of setting the preference as to whether the
analog outputs track the display readings during calibration or not. To
set the preference, press the System key once and the first System menu
will appear in the VFD display: