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P6723 Performance Verification
14
P6701B, P6703B, and P6723 Service Manual
Output Amplitude
NOTE. Make sure that the optical connector ends of both the fiber jumpers and
the input fiber of the O/E converter under test are well cleaned before perform-
ing this step. Use isopropyl alcohol, lint-free lense paper and clean compressed
air to clean the fiber ferrule ends. Refer to page 17 for the recommended
cleaning procedure.
1. Using the fiber jumpers, connect the 1310 nm digital optical source to the
optical attenuator input. Connect the output of the optical attenuator to the
power meter.
2. With the 1310 nm digital optical source transmitting at 155 Mbits/sec (OC3),
adjust the optical attenuator so that the power meter indicates --20 dBm.
3. Disconnect the jumper end from the output of the attenuator and connect the
optical input connector of the P6723 to the output of the attenuator.
4. Connect the output of the P6723 to the input of the TDS784.
5. Set the TDS784 to 5 ns/div, 200 mV/div, triggered on the signal and use the
horizontal cursors to measure the peak-to-peak amplitude.
6. Check that the peak-to-peak output (steady state on to steady state of f) is
≤ 1.1 V and ≥ 0. 69 V.