GD1 Page 29 of 76 850-816926-EN R06
If the signal in step 20 was too noisy (outside ± 8
ppm*m), adjust slightly vertical or horizontal
alignment until the noise is reduced to an
acceptable level. Avoid reducing the signal
strength too much; a drop of 5 % in relative
transmission is fine.
When finished minimizing the noise, enter
Alignment mode, click "Done" and "Save" on the
following screen.
Verify that the GD1 enters Measuring mode.
Note! As a default the zero filter is activated, filtering any noise/measurement and outputting
4 mA on the analogue output as long as the measurement is below 7% FS.
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