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Summary of Contents for Positron Teleline Isolator 751239
- Page 1 Standalone HDSL Unit, 751239 Description and Installation...
- Page 2 The information contained in this document is the property of Positron Inc. Except as specifically authorized in writing by Positron Inc., the holder of this document: 1) shall keep all information contained herein confidential and shall protect same in whole or in part from the disclosure and dissemination to all third parties, and 2) shall use same for operating and maintenance purposes only.
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Page 3: Table Of Contents
Contents The Standalone HDSL Unit ............1 Applications . -
Page 5: The Standalone Hdsl Unit
751239 (16 pages) Standalone HDSL Unit The Standalone HDSL Unit The Standalone High-bit-rate Digital Subscriber line (HDSL) unit provides high voltage isolation between one, four-wire Remote Terminal Unit (HTU-R) located inside the substation, and an HDSL CO Terminal Unit (HTU-C) located at the Central Office (CO). - Page 6 - THIS COVER MUST ALWAYS BE CLOSED AS IT PROVIDES 13-1/2" THE NECESSARY SPECIAL SAFETY INSULATION TO PROTECT PERSONNEL FROM DANGEROUS VOLTAGES PRESENT DURING GROUND FAULT CONDITIONS - WHEN WORKING IN THE CABINET USE RUBBER GLOVES AND INSULATED CARPET POSITRON SIDE VIEW 5- 9/16" GROUND...
- Page 7 751239 Standalone HDSL Unit Figure 2 Model 751239 Cover Open (Only Major Components Shown) GND LUG STATION SIDE 5¼" ISOLATION ISOLATION ISOLATION TRANSFORMER TRANSFORMER CO SIDE...
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Page 8: Applications
751239 Standalone HDSL Unit Applications The applications of the Standalone HDSL Unit include the following: • HDSL lines • Data transmission lines within the passband of the card For an illustration of the unit’s application, refer to Figure 3. Figure 3 High Voltage Interface Application CENTRAL OFFICE 300 Volt... -
Page 9: Hardware Description
751239 Standalone HDSL Unit Hardware Description The Standalone HDSL Unit contains a Plug-in HDSL card. This card is comprised 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 5¼... -
Page 10: Technical Specifications
751239 Standalone HDSL Unit Technical Specifications For a listing of the unit’s electrical specifications, refer to Table 1. For a listing of the unit’s physical specifications, refer to Table 2. Table 1 Electrical Specifications (measured at 77°F or 25°C, 50% R.H.) Parameter Specifications ISOLATION DATA... - Page 11 751239 Standalone HDSL Unit 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)
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Page 12: Installation
751239 Standalone HDSL Unit Installation The Standalone HDSL Unit is used when the number of lines to be isolated does not justify the installation of a shelf. It will isolate one full HDSL line (two pairs), or two half HDSL lines, provided that there is no metallic current. Caution •... - Page 13 751239 Standalone HDSL Unit Check the contents of your Standalone HDSL Unit kit. For a listing of the items included in the kit, refer to Table 3. Table 3 Model 751239 Kit Contents Items Included Part Numbers Standalone HDSL Unit 244-751239-401 Description and Installation document 924-010160-001...
- Page 14 751239 Standalone HDSL Unit Fasten the 1” thick plywood backboard to the wall, and mount the enclosure on it using the four screws supplied. Note The Station (subscriber) side of the enclosure is the side connected to the external ground lug. The orientation of the unit does not matter. The strain reliefs supplied each have a cable entry diameter appropriate to one of the two cables employed in this installation.
- Page 15 751239 Standalone HDSL Unit ? Bundle the cable conductors with tie wraps. ? Ensure that there are 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. Verify the installation by establishing communication.
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Page 16: Service And Support
Arrangements and pricing 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. - Page 17 Positron Inc. offers repair services by which customers can count on timely and quality repairs, regardless of customer location. All warranty repairs are performed at no cost. Positron reserves the right to repair or replace any equipment which has been found to be defective.
- Page 18 Standalone HDSL Unit Ordering Information Positron’s Teleline equipment can be ordered by telephone, facsimile, or by mail. All orders should be directed to the Positron Inside Sales department. Ordering by telephone, or facsimile will eliminate any delays arising from postal services.
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