Hach-Lange DR 3800 User Manual - Manual (Page 111)

111
Advanced Operations
6.8.3.1 Wavelength check
The Wavelength Check test is used to check wavelength accuracy
at 807 nm.
1. Press Wavelength Check in the Optical Checks menu.
2. Insert the adapter (A) for 10-mm rectangular cells in the cell
compartment #2 and insert the sample cuvette/cell (Neodym or
BG20/2) in the adapter. Close the cell compartment.
Press Start.
3. The result is displayed and is to be compared with the nominal
data of the sample cuvette/cell.
4. Press Cancel to return to Optical Checks.
6.8.3.2 Noise check
The Noise Check test is used to test the photometric noise in the
instrument.
However, this test can be used to test noise at any wavelength and
at an absorbance level determined by using a sample.
1. Press Noise Check in the Optical Checks menu.
2. Press λ to input the wavelength.
3. Input the wavelength and press OK to confirm.