YSI 556 MPS - Manual (Page 89)

System Setup Section 10
YSI Incorporated YSI 556 MPS Page 83
10.4.1 Changing the Data Filter Settings
1. Go to the system setup screen as described in Section 10.1
Accessing the System Setup Screen.
2. Use the arrow keys to highlight the Data filter selection. See
Figure 10.1 Main Menu.
3. Press the Enter key. The Data filter setup screen is displayed.
Figure 10.4 Data Filter Screen
4. With Enabled highlighted, press the Enter key to Enable or
Disable the data filter. A black dot to the left of the selection
indicates the data filter is enabled.
5. Use the arrow keys to highlight the Time constant field.
NOTE: This value is the time constant in seconds for the
software data filter. Increasing the time constant will result in
greater filtering of the data, but will also slow down the
apparent response of the sensors.
6. Use the keypad to enter a value. The default value is 8 and
this value is ideal for most 556 field applications. As
described in Section 10.3 Data Filter above, users who wish
to decrease the response time of the DO readings at the
expense of some noise for the pH readings determined