AQ-00073-000, Rev. 7 10
1. Set up instrument parameters as listed in Table 2.
2. Leave the transmittance port empty and install a light trap over the sample reflec-
tance port.
3. Close the sample compartment door. Execute a sample scan and save the results.
Time Drive Scan
The time drive scan indicates the stability of the light source and the sphere detector.
1. Set up instrument parameters as listed in Table 3.
2. Load a reflectance standard at the sample reflectance port and close the sample
compartment door.
3. Perform an Autozero scan at 500 nm.
4. Run a time drive at 500 nm and save the results.
Instrument Parameter Setting
Lamps UV/Vis ON
Beam Double Beam
Method Time Drive
Total Time 180s
Wavelength 500 nm
Slit Mode Fix
Slit 2 nm
Integration Time 0.24 s
Ordinate Mode %R
Sample Beam Front
Attenuators 100%/100%
Table 3. Instrument setup for the Time Drive Scan.