Thermo Fisher Scientific Alpha pH 600 RF (In the process of updating the brand guideline & product image) - Manual (Page 36)

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In such cases, switch the Transmitter to the Symmetrical mode as below:
1. Press ENT key and use ▲ or ▼ keys to scroll till LCD displays ‘CONF’
(Configuration). Press ENT again.
2. LCD displays “ASY” (asymmetrical operation). Use ▲ or ▼ keys to select for
‘”SY” (symmetrical mode of operation). Press ENT key again.
3. Press S and T keys together to return to the CONF main mode.
Selecting Back Light ON or OFF Operation
1. Press ENT key and use ▲ or ▼ keys to scroll till LCD displays ‘CONF’
(Configuration). Press ENT again.
2. Press ENT key until the LCD displays either “LitE ON” or “LitE OFF”
3. LCD displays “LitE ON” (Back light ON). Use ▲ or ▼ keys to select for “LitE
OFF” (back light OFF).
4. Press ENT key again.
5. Press S and T keys together to return to the CONF main mode.
Reset the User Calibration parameters or Setup parameters
1. Press ENT key and use ▲ or ▼ keys to scroll till LCD displays ‘CONF’
(Configuration). Press ENT again.
2. Press ENT key until the LCD displays “no DEF”.
3. Not to reset any of the setup or user calibration parameters select “nO DEF”
and press ENT key. It will lead to the CONF main menu.
4. To reset the user calibration parameters, select “CAL DEF” and press ENT key.
It will reset the User calibration parameters and lead to measurement mode.
5. To reset the user calibration parameters and meter setup parameters to default
values, select “FAC DEF” and press ENT key. It will reset the user calibration
parameters and meter setup parameters and lead to measurement mode.