HP 37718A Installation And Verification Manual

Also see for 37718A OmniBER 718: User guide Installation and verification manual

Contents

3-108Performance TestsSDH Transmit/Receive Jitter Amplitude Accuracy16 Press STOP to halt measurement. Change Receiver Filter to LP+HP2.17 Set the Calibration Pattern to ALT18 Change the Jitter Frequency to 650 kHz and adjust the Spectrum Analyzer spanto approx 5 times the Jitter frequency. Adjust the HP37718A Transmit Jitteramplitude if necessary for a Carrier to Sideband Ratio of -22.07 dBm = 0.1 UIp-p (for Optical SDH rates use -15.97 dBm = 0.2 UI p-p)19 Set the Calibration Pattern to OFF. Check that there are no SDH errors.20 Select . Press RUN to start measurement.Check the TX Jitter UI p-p setting is between 0.06 and 0.14 UI p-pCheck the RX Jitter results are between 0.042 and 0.158 UI p-p.Press STOP to halt measurement.21 Set the Calibration Pattern to ALT22 Change the Jitter Frequency to 6.5 kHz and adjust the Spectrum Analyzer spanto approx 3 times the Jitter frequency.23 Adjust the HP 37718A jitter amplitude (approximately 0.91 UI) and adjust untilthe Carrier and first sidebands observed on the Spectrum Analyzer are the sameamplitude within 0.10 dB (see Figure 3-11).Note: UseSpectrum AnalyzerdB/Div to improveMarker Resolutionas necessary.Figure 3-11 Carrier/Sideband Equal ExampleRESULTS