Brookfield DV-II+ Programmable Viscometer - Manual (Page 24)

Brookfield Engineering Labs., Inc. Page 24 Manual No. M/97-164-F1102
III.2.3.2 Custom Speeds
Pressing the ENTER/AUTORANGE key when Custom Speeds is displayed results in the follow-
ing screen display:
.01
°0.0
Figure 32
Fifty-four (54) speeds are available for custom speed set selection (see Appendix F). You are
allowed to select up to nineteen (19) of these 54 available speeds. Speed 0.0 is automatically included
as one of the nineteen (19) speeds. Selecting a speed (or deleting a speed) is accomplished by
pressing the
SET SPEED key while the desired speed is blinking. This will cause an asterisk to appear
(or to disappear if the speed is being cleared) to the left of the speed. Trying to select more than
nineteen (19) speeds will result in a “beep” for each press of the
SET SPEED key when over this limit.
You may scroll up or down through the speed set in selecting speeds. When done, a press of the
ENTER/AUTORANGE key will take you back to the default screen with the asterisked speeds now
comprising the custom speed set. Regardless of order chosen, speeds will appear in ascending order
for run selection, beginning with speed 0.0 RPM.
III.2.4 Printer Output Port
Scrolling to the printer port option presents the following:
L SEQUENTIAL
PRINT SERIAL
L SEQUENTIAL
PRINT PARALLEL
Figure 33
Pressing the OPTIONS/TAB key “toggles” between the two port choices. To select a printer output
port, press the ENTER/AUTORANGE key while the desired choice is blinking. This will cause the
DV-II+ to direct all further printer output to the chosen port while remaining in the Setup menu. You
must press the
ENTER/AUTORANGE key to select the flashing option.
III.2.5 Data Averaging
This feature will perform a “rolling” average on the displayed % torque value and all other displayed
viscometer data derived from % torque. You are allowed to select the number of readings over which
averaging is being done, with ten (10) readings as the maximum. There will be an initial delay as
the first average is performed and then no apparent delay as the following readings are averaged (the
viscometer takes approximately 4 readings per second). The rolling average is described as follows
given the selected reading number ‘X’:
1. The first X readings are collected, placed in the averaging buffer, averaged and
displayed.
2. The first reading in the averaging buffer is dropped; the next reading (the X + 1
reading) is placed in the buffer and the buffer is again averaged and displayed.