<p> COE Installation Quality Bulletin</p><p>Installation Quality Bulletin Number: 05-01</p><p>To: All Installation Suppliers / Design Engineering Representatives / Quality Managers / Field Engineering Representatives</p><p>Date: Friday, January 21, 2005 From: QWEST Installation Quality Assurance</p><p>Subject: DS3/STS-1 Testing Procedures for Coaxial Cable and Connectors</p><p>Action Required: YES:  NO:</p><p>Description of Bulletin:</p><p>The purpose of this Quality Bulletin is to inform all Qwest-approved installation Service Suppliers of the proper procedural steps required when testing coaxial cable and coaxial connectors used in providing DS-3 service. Refer to TABLE A and Qwest Technical Publication TP 77350 Iss. M Par. 7.2.1.</p><p>Acknowledgments to Danial Hudnall (NROC) for his contribution to the content of this Bulletin.</p><p>Qwest Installation Quality Assurance Jeff Bostow 612-798-2460 mailto:[email protected]</p><p>- CONFIDENTIAL USE ONLY - Disclose and distribute only to Qwest employees having a legitimate business need to know. Disclosure outside of Qwest is prohibited without authorization. TABLE A</p><p>DS-3 / STS-1 COAXIAL CABLE / CONNECTOR TESTING PROCEDURE STEP 1 If the Network Element (NE) is equipped, place the the DS-3 / STS-1 facility OUT OF SERVICE. Operate a Facility / Line loopback on the DS-3 / STS-1 interface. If the NE is unequipped, insert a barrel connector between the transmit (TX) and receive (RX) coaxial connectors at the NE’s termination point. Reference the NE documentation to identify TX and RX coaxial cables. STEP 2 Using the TBERD 310 DS-3 test set (or equivalent), configure the test set TRANSMIT as follows: MODE = M13; PATTERN = 2^23-1; DS-3 TRANSMIT TIMING = INT</p><p>Results 1: Toggle to SIGNAL with the RIGHT toggle switch. Toggle to PULSE SHAPE with the LEFT toggle switch</p><p>Results 2: Toggle to SUMMARY with the RIGHT toggle switch STEP 3 At the DSX-3 connect the test set to the IN (transmit) and OUT (receive) jacks.  Look for FRAME and PATTERN SYNC on the test set to verify continuity.  Inject DS-3 LOGIC errors to verify validity (they will appear in the Results 2 window.  Press the RESTART button to clear the registers once the previous step is successfully completed.  Look for PULSE SHAPE PASS in the Results 1 window. Allow 15-30 seconds for the PULSE SHAPE PASS to appear after pressing the RESTART button. The PULSE SHAPE UNAVAILABLE will appear until the PULSE SHAPE test has completed. STEP 4 Within one inch of the coax connector, perform a slight 45˚ bend of the coaxial cable (near the crimped ferrule) and gently wiggle the coaxial cable to ensure that the crimp and connector are solid. Verify that no errors are present. STEP 5 Repeat STEP 4 for all crimps / connectors tested. </p><p>- CONFIDENTIAL USE ONLY - Disclose and distribute only to Qwest employees having a legitimate business need to know. Disclosure outside of Qwest is prohibited without authorization.</p>