Thermo Scientific APEX 100 User Manual page 54

5) Make sure a checkmark is showing next to the high-gain icon, which looks like this.
High-gain icon
Note: If the checkmark is next to the low-gain icon, press the Go button to select the
high-gain setting.
6) Press the Back button to save your setting and return to page 1 of the frequency and
gain menu.
Frequency, Gain & Inhibit
7) Navigate to the frequency menu.
Low/High Frequency
8) Make sure a checkmark is showing next to the high-frequency icon, which looks like
this.
High-frequency icon
Note: If the checkmark is next to the low-frequency icon, press the Go button to select
the high-frequency setting.
9) Press the Back button repeatedly to save your settings, exit the menu, and return to
the Main Menu.
Page 54 Thermo Scientific APEX User's Guide