Instruction/ maintenance manual of the product SP251A Black Box
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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.
NOM STATEMENT 3 NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD.
CATEGORY 5 PRIMARY AND SECONDARY SURGE PROTECTORS TRADEMARK USED IN THIS MANUAL 4.
TABLE O F CONTENTS Contents Chapter 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.
7 CHAPTER 1: Specifications DC Clamp Voltage — Grounding — Insertion Loss — Return Loss — Group Delay — Series Resistance — Ω Connectors — Leads/Signals Protected — MTBF — Maximum .
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”).
9 CHAPTER 2: Introduction 2.2 Important Features.
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 .
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 Seconda.
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 .
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.
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.
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.
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.
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.
NOTES.
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 1996. Black Box Corporation. All rights reserved..
An important point after buying a device Black Box SP251A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Black Box SP251A yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Black Box SP251A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Black Box SP251A you will learn all the available features of the product, as well as information on its operation. The information that you get Black Box SP251A will certainly help you make a decision on the purchase.
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However, one of the most important roles played by the user manual is to help in solving problems with Black Box SP251A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Black Box SP251A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
