- Before changing the grating angle, disable the physical brake on the grating, inside the instrument
- In the software, go to the configuration tab, push the "Unlock" button, and enter the password.
- Still on the config tab, push the "Release Deactivate Grating Brake" button (this will change to say "Apply Grating Brake"). - After the grating brake has been released in software, the reset, initialize, grating angle entry and grating angle "Go" buttons should all be enabled.
- Reset and/or initialize if necessary.
- In the main control tab, enter the required grating angle and push the "Go" button.