Brookfield DV-III Rheometer - Manual (Page 28)

Brookfield Engineering Laboratories, Inc. Page 28 Manual No. M/98-211-A0701
Figure 33
However, we will assume at this point that we have selected speed set #2 for use in the ensuing data
gathering operations. To initiate the use of this speed set (with finite step times or with zero step
times), the user presses the
PROG RUN key and is presented with a start/end step input screen as
shown next:
Figure 34
If the user had not previously entered start and end steps, this screen will display 01 for the start step,
and the last program step (13 in this case) as the end step. The user could elect to use the entire speed
set at this point by pressing the
PROG RUN key. If the user had previously selected a start and end
step, those values would be displayed upon entry to this screen instead of the program limit values
as shown above. However, while a speed set can contain up to 25 separate speeds, the user may
be in a situation where only a few contiguous steps may be required. Therefore, this screen allows
for the option of entering the range of speeds encompassed by the start step (not necessarily the first
step) and the end step (not necessarily the last step). Pressing any numeric key at this point will
erase the currently displayed start step and substitute the new value. The user may select a start step
less than the end step ( a so-called Up Ramp) or a start step greater than the end step ( a so-called
Down Ramp). Any attempt to enter a start or end speed not contained in the speed set will result
in the following display:
Figure 35
The ENTER key is used to step from the start step entry to the end step entry. Repeated pressing
of the ENTER key will allow the user to move back-and-forth between the start and end entries and
change them as required until the correct start and end step values have been entered. The selected
speed set, and the start and end steps values entered, will be retained in EEProm memory for use the
next time the viscometer is powered up in the stand-alone mode. Pressing the
OPTION/TAB key at
this point results in the following screen display: