PERFORMANCE VERIFICATION TESTS
KI23400/KI27400 UM-2
-
76 -
Power Meter
Accuracy Test
1.
Connect the equipment as shown in Figure 8:
Source Attenuator Power Meter/DUT
Figure 8. Test set-up for the Power Meter section Accuracy Test
2. Switch on all instruments.
3. Set all instruments to 1310 nm.
4. Change the attenuation of the attenuator until the reference power
meter displays -10.00 dBm. Note the attenuator setting in row,
Setting 1
of Table 4. If the light source is not powerful enough to
give -4.00 dBm, set the attenuator to 2.5 dB and correct the
appropriate values in the test report.
Repeat the above for reference power meter readings of -20dBm,
-30 dBm, -40 dBm and -50 dBm (last reading is not relevant to H
series power meters).
5. Measure the DUT:
Re-connect the attenuator output cable to the DUT power meter
port and, select the 1310nm on DUT.
Set the attenuator to its value recorded in row, Setting 1 of Table
4. Note the displayed power level of the DUT in the test record.
Repeat the above for attenuator settings in rows, 2~5 of Table 4.
4.
Repeat the Power Meter Accuracy Test at 1550 nm.
Light Source
Output Power (CW) Test
1.
Connect the equipment as shown in Figure 9.
Source Power Meter/DUT
Figure 9. Test set-up for Output Power & Short-term Stability Tests
2. Switch on the instruments.
3. Set instruments to 1310 nm.
4. Note the measured power level value in the test report in Table 5.
5. Repeat the above on 1550 nm.
IN
OUT
Source
port
Meter
port
Source
port
Meter
port
