Checkline TT02 - Manual (Page 10)

Series TT02 Digital Torque Tool Testers User’s Guide
9
7 DIGITAL FILTERS
Digital filters are provided to help smooth out the readings in situations where there is mechanical
interference in the work area or test sample. These filters utilize the moving average technique in which
consecutive readings are pushed through a buffer and the displayed reading is the average of the buffer
contents. By varying the length of the buffer, a variable smoothing effect can be achieved. The selection
of 1 will disable the filter since the average of a single value is the value itself.
To access digital filter settings, select Filters from the menu. The display will appear as follows:
Two filters are available:
Current Reading – Applies to the peak capture rate of the instrument.
Displayed Reading – Applies to the primary reading on the display.
Available settings: 1,2,4,8,16,32,64,128,256,512,1024.
Note: It is recommended to keep the current reading filter at its lowest value for best performance, and
the displayed reading filter at its highest value for best stability.
8 SET POINTS
8.1 General Information
Set points are useful for tolerance checking (pass/fail)
and triggering an external device in process control
applications. Two limits, high and low, are programmed
in the tester, and the primary reading is compared to
these limits. The results of the comparisons are indicated
via on-screen indicators as well as through the three
outputs provided on the 15-pin connector, thus providing
“under”, “in range”, and “over” signaling. These outputs
can be connected to indicators, buzzers, or relays as
required for the application. On-screen indicators are
described in the next sub-section.
8.2 Configuration
To configure set points, select Set Points from the menu. The screen will appear as follows:
DIGITAL FILTERS
(1 = Fastest)
Current Reading
1
Displayed Reading
1024