1、 A-A-5072 9999974 0271860 993 P INCH-POUND A-A-58072 June 26,1996 COMMERCIAL ITEM DESCRIPTION TEST SET, TELEPHONE The General Services Administration has authorized the use of this Commercial Item Description ( CID ) for all federal agencies. 1. SCOPE. This CID describes a Telephone Test Set (TTS),
2、also known as a “Span-Repeater Test Set”, which monitors and tests T-carrier systems by performing error detection, fault isolation, and repeater testing. This CID outlines the minimum requirements for this Telephone Test Set. Only those manufacturers which offer products that meet or surpass the fo
3、llowing requirements are qualified per this CID. 2. SALIENT CHARACTERISTICS. The TTS covered by this CID shall be commercially-available equipment modified to the extent necessary to meet the following description. The TTS offered to meet this CID will be fully assembled upon delivery and capable of
4、 being bid sample tested within the accuracies, limits, and specifications as follows: 2.1 Method of operation. The TTS shall combine automatic fault location with error detections, conduct counting and analysis, and transmit fault locating patterns. Beneficial comments, recommendations, additions,
5、deletions, clarifications, etc., and any data which may improve this document should be sent to: Technology distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-58072 m 9999974 01718bL 82T m , A-A-58072 ) b 2.2 E- The equip
6、ment shall operate from nominal commercial, military and shipboard power sources of 1 101220 volts AC k 10% at line frequencies of 50 to 60 I Hz. Power consumption shall not exceed 250 VA. 2.3 Safety and Environm ental. This test equipment shall be solid state and enclosed to provide protection from
7、 electrical shock. During operation of this test equipment, all electric- ally conductive external surfaces shall be at earth ground potential. Safety grounding shall include precautions when RFI filters and input power cables are used. 2.3.2 Leakage Current Protection. Protection shall be provided
8、from leakage current in excess of from any accessible conductive parts of equipment (including control shafts with knobs broken or removed and recessed calibration or adjustment controls) to either pole of the power source for any position of the power switches. 2.4 Preconditioning. Each TTS shall b
9、e capable of being subjected to environmental screening effects of burn-in and thermal cycling, with thermal cycling being accomplished in the sample testing phase. 2.5 Calibration and Maintenance Adjustments. The calibration interval shall be a period of one year or greater based on an operating ti
10、me of 2,000 hours. These adjustments shall be provided by variable value components which are adjustable by simple means. The calibration by substitution of selected components or parts is unacceptable. The calibration adjustments shall be accessible without removal of the instrument case or modules
11、. 2.6 Perform ance Characteristics. This test set shall be capable of meeting or exceeding the measurement parameters listed below: 2.6.1 Test Capability. TTS shall be able to test office and line repeaters, perform span line fault location, and performance tests on T1 and T1 C systems. The transmit
12、ter signal patterns are: a) Quasi-random b) All Ones; c) Measure 1,2, and 3. 2.6.2 Audio Frea -uencies. The following 12 audio frequencies shall be available and switch selectable for the transmitter and receiver. (Fault locate frequency tolerance in Hz: $r 0.5%): A: 832 B: 928 C: 1048 D: 1206 E: 13
13、40 F: 1508 G: 1722 H: 2008 J: 2193 K: 2413 L: 2680 M: 3017 2.6.3 Transmitter Output Level shall be 6 volts, Peak to Peak, L 10%. 2.6.4 Transmitter Output Imuedance: 100 ohms f 10% balanced. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-58072
14、 9999974 0171862 766 A-A-58072 2.6.5 Clock Frequency at f 50 Hz: T1 1.544 MHz 2.6.6 Time Slot: T1 648 nsec. T1C 317 nsec. TlC 3.152MHz . 2.6.7 Pulse Widths at f 10%: T1 324 nsec. +_ 10%. T1C 160 mec. k 10%. 2.7 Receiver Specifications. This test sets receiver shall have the same fault locating frequ
15、encies as listed in 2.6.2. 2.7.1 Receiver Inp ut Level Ran& -90 to O dBm. 2.7.2 Noise Measure Ranpe: O to 70 dBrnc. 2.7.3 Nominal Iqut Impedance: 900 ohms balanced. 2.7.4 Meter Readinp Ac curacy: fl.O dB. 2.7.5 Filter Rand width: 4Hz. 2.8 Error Detection: a) Input Level: b) Input Impedance: 200 ohms
16、 c) Artificial Line Loss: This test set shall provide at least 4 selectable attenuation 0.3 to 3.3 Volts Peak to Base steps between O and 43 dB at 772 Hz. 2.9 TTS shall include repeater tester modules capable of testing the “min” repeaters. 2.1 O Temperature Requirements. 2.10.1 The TTS shall meet i
17、ts performance and accuracy requirements in an operating environment of O to +50 degrees Celsius. 2.10.2 The TTS shall meet its performance arid accuracy requirements &er being in a non- operating environment (storage temperature) of -1 O degrees to +60 degrees Celsius. 2.1 1 Dimensions. The units r
18、ecommended nominal dimensions, viewed as if rackmounted, are 13.0 inches wide, 9.0 inches high and 11 .O inches deep. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-58072 2.12 Weight. The test sets total weight including all accessories, but e
19、xcluding manuals, shall not exceed 2 1 pounds. 2.13 Manuals. Each test set shall be delivered with a users manual that contains information on the operation and maintenance of the equipment. The manual shall include a parts breakout or a parts list. 3. REGULATORY REOUIRE MENTS. In accordance with Se
20、ction 23.403 of the Federal Acquisition Regulations, the Governments policy is to acquire items composed of the highest percentage of recoverable materials practicable, consistent with maintaining a satisfactory level of competition without adversely affecting performance requirements or exposing th
21、e suppliers employees to undue hazards fi-om the recovered materials. 4. OUALI W ASSURANCE. Product Conformance, The products provided shall meet the salient characteristics of this commercial item description, conform to the producers own drawings, specifications, standards, and quality assurance p
22、ractices, and be the same product offered for sale in the commercial market. The Government reserves the right to require proof of such conformance. 5. PACKAG ING. The test set shall be packed in accordance with normal commercial practice and packed to assure acceptance by common carrier. Product pr
23、otection against loss and damage during multiple shipments, handling, and storage shall be provided. The shipping shall be in compliance with national motor freight classification and uniform freight classification. Shipping container shall be marked as specified in the contract or order. 6. NOTES.
24、6.1 Metrics Products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest version of Federal Standard No. 376, and all other requ
25、irements of this CID are met. 6.2 Federal and military documents are available from: Defense Documents Order Desk Building 4D, 700 Robbins Ave. Philadelphia, PA 191 11-5094 Phone: 2 15/697-2 179 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-
26、58072 9999974 0171864 539 = A-A-58072 6.3 Known Acceptable Products. The following product is known to have previously met the salient characteristics of this CID. All other manufacturers must meet the requirements of this CID and may be requested to submit products for bid testing and certification
27、. Manufacturer Part Number NSN Joslyn-Sierra Corp. 425A-TW with CO2979601 adapter NSL at this time MILITARY INTERESTS: Custodian Air Force - 99 Navy - SH Army - MI Reviewing Activities: DLA - ES GSA - FSS CIVIL AGENCY COORDINATING ACTIVITIES: GSA-FSS Preparing Activity: Air Force - 82 Project : 6625-0825 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
