HP 8168E - Page 165

D
Relative Wavelength Accuracy
1. Set the wavelength meter:
a. Press SYSTEM 4
Preset
5 .
b. Press DISPLAY 4
Peak WL
5 .
c. Press DELTA 4
OFF
5 .
d. Press MEASUREMENT 4
Cont
5 .
2. Set the TLS :
a. Switch o Coherence Control.
b. Set the output power to -10dBm (8168F to -7dBm), activate laser output.
3. Set the wavelength on the TLS to:
HP 8167A 1280nm
HP 8168D 1490nm
HP 8168E 1475nm
HP 8168F 1450nm
4. Note the displayed wavelength of the wavelength meter in the test report.
5. Increase wavelength setting on TLS by the steps shown in the test report.
6. Repeat list item 4 and list item 5 up to
HP 8167A 1330nm
HP 8168D 1565nm
HP 8168E 1575nm
HP 8168F 1590nm
7. Repeat list item 3 to list item 6 another 4 times.
8. From each of the repetitions of the measurements, pick the maximum and
minimum deviations, and note these values in the test report.
9. Pick the largest Maximum Deviation, and note it as the Largest Maximum
Deviation in the test report.
10. Pick the smallest Minimum Deviation, and note it as the Smallest Minimum
Deviation in the test report.
11. Calculate the Relative Wavelength Accuracy
Performance Tests D-5