GRAPHTEC GL820 Service Manual page 27

(10) When you have finished the Setup operation for 50 V, the
Press the [ENTER] key to begin writing the new Setup data to the EEPROM.
(11) After the setup parameters have been registered to the EEPROM, the display closes and returns to
normal mode.
(12) Turn off the GL820.
This completes the voltage amp setup.
GL820-UM-251-9370
"EEPROM :
Message
4-7
4. SETUP PROCEDURES
[ENTER]" message appears.