PERFORMANCE VERIFICATION TESTS
KI23400/KI27400 UM-2
-
78 -
5. Press [Auto/Meas] and wait until 'End of Automeasure' is
displayed.
6. Choose [User] and select the type of source to be measured (FP
for Fabry Perot laser).
7. To show the display in linear mode:
a.
Press [Menu].
b.
Press [Amptd] on the left side of the display.
c.
Press [Linear] on the right side of the display.
8. To ensure interference-free reading of the display it is advisable
to stop the repeating calculations.
- Press [User].
- Press [Single Sweep].
If the trace on the display is not clear, you can change resolution
by using the span key.
9. From the displayed measurements check and note the values for
"Centre
λ”
and "FWHM" (Spectral Bandwidth) in Table 6.
10. Repeat the test with the DUT
λ
set to 1550 nm
Two Way Autotest
Tests described below allow checking calibration accuracy, range and
linearity for the pair of instruments.
Two Way Calibration Accuracy Test
1.
Connect the instruments as shown in Figure 11, using one test
lead per instrument:
Figure 11. Reference set up for Two Way Calibration Accuracy Test
DUT (Source)
Source
port
Figure 10.
Centre λ and
Spectral Bandwidth tests
