PROGRAMMING4-124.4.4 Change Span ValueThis function allows the user to change the span values ofthe calibration gases.1. “Change Span Value?” is the fourth sub-menu item inthe Calibration sub-menu2. Press [Y/+], display shows the gas name and the spanvalue. A cursor will blink at the first digit of the Spanvalue. To modify the span gas value, go to Step 3.Otherwise, press and hold the [MODE] key for 1second to accept the previously stored span gas valueand move to the next sub-menu.3. Starting from the left-most digit of the span gas value,use the [Y/+] or [N/-] key to change the digit value andpress [MODE] key momentarily to advance to nextdigit. Repeat this process until all digits are entered.Press and hold the [MODE] for 1 second to exit.4. The display shows “Save?” To accept the new value,press the [Y/+] key. Press the [N/-] key or the[MODE] key to discard the change and move to thenext sub-menu.