11831 AIRPORT RD WHOLE SITE FILE 2020-01-21

• 9-29.3(2) H Three-Conductor Shielded Cable Section 9-29.3(2)H is deleted in its entirely and replaced with the following: Three conductor shielded cable (3CS) for the detector circuit for optical fire preemption receivers shall be Model 138 Opticom cable. 9-29.3(2) I Twisted Pair Communications Cable Section 9-29.3(2)1 is supplemented with the following: Twisted-Pair (TWP) Copper Cable Testing The Contractor shall perform a Field Acceptance Test on the installed cable. Each pair shall be tested for frequency attenuation between the communication hub and each ITS device.The Contracting Agency will provide a witness during the tests and the test results shall be documented as prescribed elsewhere in this specification. Any pairs showing attenuation greater than 2 dB per mile at 1 kHz shall be cause for rejection of the cable. The Contractor shall replace any cable failing this test at no additional expense to the Contracting Agency.The Contractor shall provide all test equipment necessary to perform the tests. All pairs of each underground cable shall be tested for continuity,polarity, shorts,grounds,longitudinal balance, and both resistive and impedance losses consistent with the manufacturer's specifications and standard telecommunication industry requirements. Each TWP copper cable intended primarily for data communication applications shall be tested end-to-end from the controlled environment vault cable termination point to the interface at the traffic control device. The transmission test procedure shall include the continuity testing of each pair within each TWP cable from the outlet in the termination panel in the vault to the termination outlet at each device location. The Contractor shall ensure that all individual wires in all TWP cables have been terminated consistent with the wire insulation color to termination pin requirements set forth in this Special Provision. The Contractor shall document the transmission quality test results for 50% of the pairs in each cable of the installed TWP cable and provide documentation for each cable that the cable meets or exceeds the manufacturer's published specifications and otherwise complies with the requirements set forth in this specification for characteristic impedance,longitudinal balance,resistive and impedance losses, and near-end crosstalk. The Contractor shall provide the Engineer with the manufacturer and model number of the test equipment and the equipment calibration procedures to be used prior to conducting all tests. The Contractor shall test each underground cable end-to-end from the controlled environment vault-termination block to the terminal block at each cable pedestal or other outside plant terminal equipment. The Contractor shall provide actual test readings for each of the following items to verify the required transmission criteria: DC Resistance -The resistance of any conductor in any cable shall not exceed 20 52 ohms per 1000 feet. DC Resistance Unbalance-The resistance unbalance between the two conductors 3 of any pair shall not exceed 5%. Ambient Noise Measurements -The Contractor shall measure the ambient noise 6 level in dBmO to determine the level of noise on each cable being tested. The distant end of the pair being tested should be terminated with a 600- 34 Swift II BRT Boeing to Canyon Park Station—Traffic Signal 90%Special Provisions—12/1/2016