Manual Black Box SP251A

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  • Black Box SP251A - page 1

    CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mail order: Black Box Corporation , 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com JANUARY 1 ...

  • Black Box SP251A - page 2

    NOM STATEMENT 3 NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD ...

  • Black Box SP251A - page 3

    CATEGORY 5 PRIMARY AND SECONDARY SURGE PROTECTORS TRADEMARK USED IN THIS MANUAL 4 ...

  • Black Box SP251A - page 4

    TABLE O F CONTENTS Contents Chapter Page 5 ...

  • Black Box SP251A - page 5

    1. Specifications CATEGORY 5 PRIMARY AND SECONDARY SURGE PROTECTORS Compliance — Standards — Interfaces — CAUTION! Because of clamp-voltage limitations, the Surge Protectors are not compatible with ARCNET ® or Type 1 Token Ring. Maximum Data Rate — Response Time — Characteristic Impedance — NEXT Loss — Appendix B Surge Rating — Sur ...

  • Black Box SP251A - page 6

    7 CHAPTER 1: Specifications DC Clamp Voltage — Grounding — Insertion Loss — Return Loss — Group Delay — Series Resistance — Ω Connectors — Leads/Signals Protected — MTBF — Maximum Altitude — Temperature Tolerance — Humidity Tolerance — Size — Weight — ...

  • Black Box SP251A - page 7

    8 CATEGORY 5 PRIMARY AND SECONDARY SURGE PROTECTORS 2.1 General Overview Appendix B CAUTION! These surge protectors will not provide complete protection should your equipment or building be subject to a direct lightning hit, nor will they provide complete protection against severe differences in ground potential (“severe ground loops”). 2. Intr ...

  • Black Box SP251A - page 8

    9 CHAPTER 2: Introduction 2.2 Important Features ...

  • Black Box SP251A - page 9

    10 CATEGORY 5 PRIMARY AND SECONDARY SURGE PROTECTORS 3.1 Applications 3.1.1 T HE S ECONDARY S URGE P ROTECTOR (SP251A) Figure 3-1. A typical point-of-use application for the SSP . 3. Installation Category 5 Secondary Surge Protectors ...

  • Black Box SP251A - page 10

    11 CHAPTER 3: Installation 3.1.2 T HE P RIMARY S URGE P ROTECTOR (SP250A) Figure 3-2. A typical barrier application for the PSP . Local Hub Electrical Panel Exterior Wall Category 5 Primary or Secondary Surge Protectors Category 5 Primary Surge Protector To other building or floor Category 5 Primary or Secondary Surge Protectors ...

  • Black Box SP251A - page 11

    12 CATEGORY 5 PRIMARY AND SECONDARY SURGE PROTECTORS 3.2 Installation Procedures 3.2.1 C ONNECTING THE PSP OR SSP TO AN I/O P ORT Figure 3-3. Installing a Surge Protector . Cat. 5 patch cable to protected equipment (6 inches [15.2 cm] or less) Cat. 5 input from network Connection to chassis or safety ground ...

  • Black Box SP251A - page 12

    13 CHAPTER 3: Installation CAUTION! Surge energy may run both directions on the ground strap. To provide the best protection, it is essential that the ground strap on the Surge Protector be connected to the chassis ground of the protected device. Do not lengthen the Surge Protector’s ground strap or connect it to a ground other than chassis groun ...

  • Black Box SP251A - page 13

    14 CATEGORY 5 PRIMARY AND SECONDARY SURGE PROTECTORS These Category 5 Surge Protectors meet IEC standards 801.2, 801.4, and 801.5 (CE Mark). Table A-1. IEC Threat L evels as a F unction of Class Class Symmetrical Lines Coupling Mode Line = GND, Source Impedance = 42 ohms 1 1.0 kV at 24 A 2 1.0 kV at 24 A 3 2.0 kV at 48 A 4 N/A 5 4.0 kV at 95 A Surg ...

  • Black Box SP251A - page 14

    15 APPENDIX B: EIA/TIA TSB-40A Compliance all Table B-1. Results of TSB-40A Compliance Testing, Part 1: Typical Near-End Crosstalk Measurements NEXT Measurements for the Primary Surge Protector (SP250A) SOURCE/VICTIM PAIRS Freq. 1-2/3-6 1-2/4-5 1-2/7-8 3-6/4-5 3-6/7-8 4-5/7-8 SPEC (MHz) (dB) (dB) (dB) (dB) (dB) (dB) (dB) 1 >80 >80 >80 > ...

  • Black Box SP251A - page 15

    16 CATEGORY 5 PRIMARY AND SECONDARY SURGE PROTECTORS Table B-2. Results of TSB-40A Compliance Testing, Part 2: Typical Attenuation Measurements Attenuation Measurements for the Primary Surge Protector (SP250A) Freq. Pins 1-2 Pins 3-6 Pins 4-5 Pins 7-8 SPEC (MHz) (dB) (dB) (dB) (dB) (dB) 1 0.0 0.0 0.0 0.0 0.1 4 0.0 0.0 0.0 0.0 0.1 8 0.0 0.0 0.0 0.0 ...

  • Black Box SP251A - page 16

    17 APPENDIX B: EIA/TIA TSB-40A Compliance Table B-3. Results of TSB-40A Compliance Testing, Part 3: Typical Return-Loss Measurements Return-Loss Measurements for the Primary Surge Protector (SP250A) Freq. Pins 1-2 Pins 3-6 Pins 4-5 Pins 7-8 SPEC (MHz) (dB) (dB) (dB) (dB) (dB) 1 27.4 27.6 28.4 28.0 23 4 37.3 38.0 49.0 42.5 23 8 40.8 42.3 37.8 38.7 2 ...

  • Black Box SP251A - page 17

    NOTES ...

  • Black Box SP251A - page 18

    1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 1996. Black Box Corporation. All rights reserved. ...

Manufacturer Black Box Category Surge Protector

Documents that we receive from a manufacturer of a Black Box SP251A can be divided into several groups. They are, among others:
- Black Box technical drawings
- SP251A manuals
- Black Box product data sheets
- information booklets
- or energy labels Black Box SP251A
All of them are important, but the most important information from the point of view of use of the device are in the user manual Black Box SP251A.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Black Box SP251A, service manual, brief instructions and user manuals Black Box SP251A. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Black Box SP251A.

A complete manual for the device Black Box SP251A, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Black Box SP251A by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Black Box SP251A.

A complete Black Box manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Black Box SP251A - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Black Box SP251A, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Black Box SP251A, that we can find in the current document
3. Tips how to use the basic functions of the device Black Box SP251A - which should help us in our first steps of using Black Box SP251A
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Black Box SP251A
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Black Box SP251A in a specific country, if it was not possible to solve the problem on our own.

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