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Appendix G: Product Verification
Appendices
A --- 28
Step 1: Disconnect the fibers from the OA 5000 and 1310 nm laser.
Connect the 1550 nm laser to the input fiber and the long wavelength
sensor to the output fiber. Connect the fibers together using an FC/FC
adapter. Set the laser to CW (unmodulated) mode, and set the laser
power level (if adjustable) to maximum, but not more than 2 mW. Turn
on the laser.
Step 2: Set the wavelength displays of the OA 5000 and the power
meter to the actual wavelength (not the nominal wavelength) of the laser,
within ±1 nm.
Step 3: Set the power meter to W (watts) mode. The reading should be
at least 400 W. Set the power meter to dB relative (dB key) mode, and
set the dB reference (Disp-->Ref). The power meter should read 0.0 dB
±0.1 dB.
Step 4: Disconnect the fibers from the FC/FC adapter, and connect
them to the OA 5000.
Step 5: Set the OA 5000 attenuation to 0 dB, and the DISABLE button
off (unlit).
Step 6: The power meter reading is the insertion loss of the OA 5000.
Check that the power meter reading is ---2.5 dB or higher (more posi-
tive).
NOTE
During the remaining steps, do not disturb the connections and
fibers.
Step 7: Set the dB reference (Disp-->Ref) at the power meter. The
power meter reading should be 0.00 dB within ±0.01 dB.
Step 8: Set the OA 5000 to each of the settings in the table below, and
check that the power meter reads within the listed accuracy limits. At
30 dB, note the reading.
Step 9: Set the OA 5000 to 0 dB. Check that the power meter reads
0.00 dB within the repeatability specification (±0.05 dB).
Step 10: Set the OA 5000 to 30 dB. Check that the power meter reads
the same as in step 8, within the repeatability specification (±0.05 dB).
Step 11: If the readings in steps 9 and 10 do n ot meet the repeatability
specifications, check the connections, and repeat steps 7 to 10.
1550 nm:
Insertion Loss,
Attenuation
Accuracy, and
Repeatability