YSI 556 MPS - Manual (Page 90)

Section 10 System Setup
YSI 556 MPS YSI Incorporated Page 84
concurrently, should change the Time Constant to a value of
2.
7. Press the Enter key to enter the time constant.
8. Use the arrow keys to highlight the Threshold field.
NOTE: This value determines when the software data filter
will engage/disengage, speeding the response to large changes
in a reading. When the difference between two consecutive
readings is larger than the threshold, then the reading is
displayed unfiltered. When the difference between two
consecutive readings drops below the threshold, readings will
be filtered again.
9. Use the keypad to enter a value. The default value is 0.01.
10. Press the Enter key to enter the threshold.
11. Press the Escape key repeatedly to return to the Main menu
screen.
10.5 Shutoff Time
The YSI 556 MPS shuts off automatically after 30 minutes of inactivity. The
shut off time may be changed as described below.
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 Shutoff time selection on
the system setup screen. See Figure 10.2 System Setup
Screen.
3. Use the keypad to enter a value from 0 to 60 minutes. The
default value is 30.
NOTE: To disable the automatic shutoff feature, enter a zero
(0).
4. Press the Enter key to enter the correct shutoff time.