4 Operation
Model Ultra Trace 3000
4-6
Teledyne Analytical Instruments
after this initial stabilizing period and may be checked again after a addi-
tional 7-10 day frequency of zero adjustment is at the discretion of the user
(once a month is suggested).
Choose
System
from the Function buttons. The LCD will display five
subfunctions.
TRAK/HLD Auto—Cal
PSWD Logout More
Use < > arrows to blink
Auto—Cal
, and press
Enter
. A new screen for
Span/Zero
set appears.
Span OFF Nxt: 0d 0h
Zero OFF Nxt: 0d 0h
Press < > arrows to blink
Span
(or
Zero
), then press
Enter
again.
(You won’t be able to set
OFF
to
ON
if a zero interval is entered.) A
Span
Every
... (or
Zero Every
...) screen appears.
Span Every 0 d
Start 0 h from now
Use
∆∆∆∆∆∇
arrows to set an interval value, then use < > arrows to move to
the start-time value. Use
∆∆∆∆∆∇
arrows to set a start-time value.
To turn
ON
the
Span
and/or
Zero
cycles (to activate
Auto-Cal
): Press
System
again, choose
Auto—Cal
,
and press
Enter
again. When the
Span/
Zero
values screen appears, use the < > arrows to blink the
Span
(or
Zero
)
OFF
/
ON
field. Use
∆∆∆∆∆∇
arrows to set the
OFF
/
ON
field to
ON
. You can now
turn these fields
ON
because there is a nonzero span interval defined.
4.3.3 Password Protection
If a password is assigned, then setting the following system parameters
can be done only after the password is entered: span and zero settings,
alarm setpoints, analysis range definitions, switching between autoranging
and manual override, setting up an auto-cal, and assigning a new password.
However, the instrument can still be used for analysis or for initiating a self-
test without entering the password.
If you have decided not to employ password security, use the default
password
TETAI
. This password will be displayed automatically by the
microprocessor. The operator just presses the Enter key to be allowed total
access to the instrument’s features.
NOTE: If you use password security, it is advisable to keep a copy of the
password in a separate, safe location.
