Operation
and by using either ARROW KEYS or the ENCODER, indicate where to insert the step. Complete
the move by again pressing ENTER.
Deleting a Step in the Sequence
To delete a step in the sequence, press MENU, select DELETE SEQUENCE STEP, select the step to
be removed from the sequence, and press ENTER to complete the deletion.
Deleting the Entire Sequence
To delete the entire sequence, press MENU, select DELETE ENTIRE SEQUENCE: 23 STEPS, press
ENTER, select YES to confirm the deletion and again press ENTER.
Stepping and Stepping Time
Stepping can either be timed or manual. If TIMED is selected, any valid time from 0.3 seconds to
99 hours: 59 minutes: 59.9 seconds can be set. This sets the time that the Model 1140A is set to
each file in the sequence. For example, if the user wants to set up a sequence of 0°C to 100°C in
10°C increments and each sequence step is to last 20 seconds, the time should be set to
00:00:20.0. When incrementing or decrementing time, the tenths of seconds do not spill over to
seconds, the seconds to minutes, etc. To set a time of less than one second, set the seconds to any
number other than 00, then set the tenths of seconds to any number between 0.3 and 0.9, and then
set the seconds, minutes, and hours to 00.
If MANUAL is selected, the user can control the sequence steps by either using the ENCODER or
the ARROW KEYS. The up and right ARROW KEYS go forward in the sequence, and the down and
left ARROW KEYS go backward in the sequence. To end using the sequence, press the ENCODER
or any key except an ARROW KEY, select YES, and press ENTER.
Repeating the Sequence (Timed)
By setting REPEAT SEQUENCE to YES, the sequence cycle will keep repeating until the user
interrupts it by pressing any front-panel key (except the ARROW KEYS), selecting YES, and
pressing ENTER to exit the sequence. If REPEAT SEQUENCE is set to NO, the sequence will be
done once, and then the Model 1140A will automatically exit the sequence.
Repeating the Sequence (Manual)
By setting REPEAT SEQUENCE to YES, the user can cycle through the sequence multiple times
(going from the first step to the last and back to the first in a loop, etc.) until exiting the sequence
by pressing any front-panel key (except the ARROW KEYS) and selecting YES. If REPEAT
SEQUENCE is set to NO, the user can go through the cycle and back but not from the last step to
the first step. Exit the sequence by pressing any front-panel key (except the ARROW KEYS), and
selecting YES.
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