P6723 PerformanceVerification
14 P6701B, P6703B, and P6723 Service Manual
Output Amplitude
NOTE. Make surethat the optical connector ends of both the fiber jumpers and
the input fiber of the O/E converterunder test are well cleaned before perform-
ing this step. Use isopropyl alcohol, lint-freelense paper and clean compressed
air to clean the fiberferrule ends. Refer to page 17 for the recommended
cleaning procedure.
1. Using the fiberjumpers, connect the 1310 nm digital optical source to the
optical attenuatorinput. Connect the output of the optical attenuator to the
power meter.
2. Withthe 1310 nm digital optical source transmitting at 155 Mbits/sec (OC3),
adjust the optical attenuatorso that the power meter indicates --20 dBm.
3. Disconnect thejumper end from the output of the attenuator and connect the
optical input connectorof the P 6723 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 cursorsto measure the peak-to-peak amplitude.
6. Check that the peak-to-peak output (steady st ate on to steady state off) is
≤1.1 V and ≥ 0.69V.