HP 37718A Installation And Verification Manual

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

Contents

3-28Performance TestsPDH/DSn Transmitter Outputc/ Use ENTRY/MEASURE control to select DS3_92 in the highlightedMSK FILES window.d/ softkey.Compare Pulse with Mask11 On the Oscilloscope, use the following key sequence to compare thepulse with the mask:a/ RECALL 8b/ DEFINE MEASc/ softkeyd/ softkeye/ softkeyf/ softkeyg/ RUN12 The Oscilloscope will automatically display and compare an isolatedpositive pulse with the mask limits. A PASS message should appear onthe Oscilloscope.NOTE It may be necessary to select and / tovisibly fit the waveform to the mask by adjusting the Oscilloscope verticalgain/position and horizontal delay to obtain a PASS on the Mask.13 Measure the peak pulse amplitude at the mid pulse-width using theOscilloscope and verify that this is nominally 560 mV.14 Set the signal to HIGH and check that the peak pulseamplitude is approximately 0.9V.15 Set the signal to LOW and check that the peak pulseamplitude is approximately 0.3V.Procedure - DSX-1Positive Pulse1 Recall the HP 37718A/19A Default Settings as shown on page 3-4.2 Connect the DSn 100Ω OUT port to the Oscilloscope via the HP15508B Balanced to unbalanced Converter and terminate in 75Ω atthe Oscilloscope input.3 Select the Transmitter Output page.LOAD SETUP 8 M1M2COMPARETEST ONM1M2AFTER FAIL CONTINUEMASK MASK AUTO MASK ALIGNTRANSMITTRANSMIT