4 Operation
Model 2000A-EU
4-6
Teledyne Analytical Instruments
ZERO in Ød Øh off
SPAN in Ød Øh off
Press < > arrows to blink
SPA
N
(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.
Zero schedule: OFF
Day: Ød Hour: Øh
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
AUTOCAL
):
Press
System
again, choose
AUTOCAL
,
and press
Enter
again. When the
ZERO/SPAN
values screen appears, use the < > arrows to blink the
SPAN
(or
ZERO
) and press
Enter
to go to the next screen. Use < > to select
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
Before a unique password is assigned, the system assigns
TAI
by default.
This password will be displayed automatically. The operator just presses the
Enter key to be allowed total access to the instrument’s features.
If a password is assigned, then setting the following system parameters can
be done only after the password is entered: alarm setpoints, assigning a new
password, range/application selections, and curve algorithm linearization.
(APPLICATION and ALGORITHM are covered in the programming section.)
However, the instrument can still be used for analysis or for initiating a self-test
without entering the password. To defeat security the password must be
changed back to
TAI
.
NOTE: If you use password security, it is advisable to keep a copy of
the password in a separate, safe location.
4.3.3.1
Entering the Password
To install a new password or change a previously installed password, you
must key in and
ENTER
the old password first. If the default password is in
effect, pressing the
ENTER
button will enter the default
TAI
password for you.
Press
System
to enter the
System
mode.