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Positron Teleline Isolator 751239, Description And Installation

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Summary of Contents for Teleline Isolator 751239

Page 1: ...Standalone HDSL Unit 751239 Description and Installation ...

Page 2: ...use same for operating and maintenance purposes only DISCLAIMER NOTICE Although Positron Inc has made every effort to ensure the accuracy of the information contained herein this document is subject to change without notice TECHNICAL CUSTOMER SUPPORT Should a problem arise contact your customer support department If the problem cannot be resolved by your support department or if you have any quest...

Page 3: ...Contents i o03kd000TOC fm 1 The Standalone HDSL Unit 1 2 Applications 4 3 Hardware Description 5 4 Technical Specifications 6 5 Installation 8 6 Service and Support 12 ...

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Page 5: ... insulated 12 conductor cable for connection to the CO s incoming cable and mounting hardware Its features include the following The unit provides isolation 50 kVrms 70 kV peak while maintaining full communication between terminals Communication is maintained across the gap by isolation transformers that provide low loss low distortion transmission The unit does not require power from either the C...

Page 6: ...NLESS THE PROPER SAFETY PRECAUTIONS ARE TAKEN THIS COVER MUST ALWAYS BE CLOSED AS IT PROVIDES THE NECESSARY SPECIAL SAFETY INSULATION TO PROTECT PERSONNEL FROM DANGEROUS VOLTAGES PRESENT DURING GROUND FAULT CONDITIONS CABINET USE RUBBER GLOVES AND INSULATED CARPET WHEN WORKING IN THE POSITRON GROUND LUG SIDE VIEW 5 9 16 ...

Page 7: ...dalone HDSL Unit 3 751239 Figure 2 Model 751239 Cover Open Only Major Components Shown GND LUG ISOLATION GAP 5 1 TB2 1 TB1 STATION SIDE CO SIDE ISOLATION TRANSFORMER ISOLATION TRANSFORMER C8 W3 W4 C5 W1 W2 ...

Page 8: ...in the passband of the card For an illustration of the unit s application refer to Figure 3 Figure 3 High Voltage Interface Application Standalone HDSL Unit Model 751239 Communications Cable 300 Volt Point 300 Volt Point 300 Volt Point Zone of Influence Metal Conduit PVC Conduit CENTRAL OFFICE HIGH VOLTAGE INTERFACE SUBSTATION HTU R Lightning Arrestor ...

Page 9: ...mprised of two sides The Station side is located on the upper portion of the card and the CO side is located on the lower portion of the card The Station side is separated from the CO side by the isolation transformers which create a 5 inch isolation gap For the unit s block diagram refer to Figure 4 Figure 4 Block Diagram ...

Page 10: ... resistance 100 000 MΩ Metallic surge 3 kV maximum Insulation voltage 50 kVrms 70 kV peak INPUT VOLTAGE REQUIREMENT None TRANSMISSION DATA Longitudinal balance CO side 80 dB 60 Hz 60 dB 300 to 40 kHz Return loss at either side with opposite side terminated at135 Ω 25 dB 1KHz to 750 kHz NOISE 2 to 100 Hz 60 dBm Voice band C weighted message 2 dBrnc Impulse noise Less than 1 count above 48 dBrnc in ...

Page 11: ...SL Unit 7 751239 Table 2 Physical Specifications Parameter Specifications Operating temperature range 4 F to 149 F 20 C to 65 C Height 13 1 2 34 3 cm Width 11 5 16 28 7 cm Depth 5 9 16 14 1 cm Weight 8 3 lbs 3 8 kg ...

Page 12: ...on and CO cables should be kept at least six inches apart upon wiring in order to prevent an electric arc between the two in the event of damage to or degradation of their insulation 1 Verify that you have the following customer supplied tools and hardware which are required to install the unit Station cable Center punch Electric drill with a 5 32 diameter bit 7 16 hex wrench 1 8 and 1 4 common bl...

Page 13: ...circuit does require simplex or loop sealing currents change the jumper settings accordingly For a view of the possible jumper settings refer to Figure 5 Items Included Qty Part Numbers Standalone HDSL Unit 1 244 751239 401 Description and Installation document 1 924 010160 001 Danger label already affixed 1 7501 02 103 One card Shelf four wire accessory kit 1 241 751202 401 10 insulated cable 12 ...

Page 14: ...CO and station cables and affix them to the unit Route the two telephone cables allowing a length of five inches per cable for the internal connections to the terminal blocks Cut the excess wire once the exact internal length is established and tighten the strain reliefs Strip back the outer jacket of each cable one inch Strip the inner insulating jacket of each conductor 1 8 Connect these strippe...

Page 15: ...re no excess wires dangling into the isolation gap between the Station and CO side circuits Then close and secure the shelf cover with the captive screws 8 Verify the installation by establishing communication Figure 5 Jumper Settings C8 W3 W4 C5 W1 W2 C8 W3 W4 C5 W1 W2 C8 W3 W4 C5 W1 W2 1 2 3 ...

Page 16: ...information regarding field assistance may be obtained by contacting the Technical Customer Support department Please contact Positron for scheduling at least four weeks prior to the actual requested visit date Customer Training Positron offers full customer training courses as requested Seminars are also available on High Voltage Interface HVI For more information contact a customer representativ...

Page 17: ...this into consideration when requesting a Return Material Authorization RMA number Before returning any items to Positron for repair warranty repair or replacement call the Repair department to obtain an RMA number Parts returned without RMA numbers cannot be accepted The RMA number must always be clearly marked on all boxes and crates and on all shipping documents Items under warranty are to be s...

Page 18: ...ite All orders must be followed by a confirming order Equipment will not be shipped until such confirmation is received For a list of our contact information refer to Table 5 Table 5 Positron Contact Information Address Positron Inc 5101 Buchan St Montreal Quebec Canada H4P 2R9 Main telephone number 514 345 2200 Customer Service department telephone number 514 345 2200 1 888 577 5254 General e mai...

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