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2004 chevy silverado 2500 radio wiring diagram

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Measurements and comparison of WiMAX radio coverage at 2.5 ...

The performance of co-located WiMAX transmitter sites operating at 2.5 and 3.5GHz are compared, based on coverage assessments. The study showed that the 2.5GHz performed marginally better than the 3.5GHz under the same RF conditions and clutter environments. In general, the 2.5GHz was found to provide slightly better coverage at the edge of the cell, with an average of 2dB less loss at 1km from the transmitter location. Comparisons of the path loss difference between these two frequencies with various empirical propagation models (COST-Hata, ECC-33, WINNER II-Suburban, SUI Flat) were made, and differences from 2.9 dB to 6.2 dB are reported from these models, which are much larger than those reported here (around 2 dB for outdoor). These differences are also dependent on the distance to the site. Indoor penetration loss was found to be around 1 dB. • • Impact on site configuration Impact of local clutter Section 2 of this paper goes through the data collection methodology applied during the measurement campaign. Section 3 provides the results of the comprehensive data set collected during the surveys. In section 4, we summarise the results and attempt to give an indication of what the results translate to in terms of network infrastructure requirement.

Boosting WiMAX indoor coverage - Huawei

How to Operate Boosting WiMAX indoor coverage Boosting WiMAX indoor coverage In the mobile telecom market where competition is fierce, optimum indoor coverage can help operators take the lead in the market and improve user experience. Therefore, indoor coverage grows in importance to operators. By Zheng Yuanyuan A key focus for operators A ccording to NTT DOCOMO’s statistics, indoor 3G traffic takes up 70% of the total; however, the indoor areas only take up 20% of all covered areas. Based on years of experience in planning and study of 3G data services, Huawei also concludes that 90% of the data traffic takes place indoors. High spectrum utilization and throughput are the prominent advantages of WiMAX 16e, and WiMAX has attracted global operators’ attention once it was proposed. Considering the nonline-of-sight features of WiMAX brought by high frequencies, most operators select the frequency band of 2-6GHz to realize wireless broadband access. However, higher frequencies mean more transmission loss of radio wave in open space, poorer ability to diffract or bend around obstacles, and greater penetration loss. These require that operators need to design appropriate intervals between base stations and frequency multiplexing before building WiMAX networks. Moreover, through optimization of antenna azimuths and downtilt at outdoor, radio signals can directly penetrate buildings to cover indoor spaces. Structural optimization is also required at later stages to further improve indoor coverage.

Radio Planning and Coverage Prediction of Mobile WiMAX in ...

Challenged by the LTE system, Mobile WiMAX is set to be the next generation broadband wireless system. Providing high data rates over large distances gives unlimited possibilities for services provided to the end users. As for all undeveloped systems, Mobile WiMAX has also been exposed to rumors and hypes. This thesis is based on the work performed in [31], and aims to provide radio planning of a Mobile WiMAX network in the populated areas of Trondheim, Norway. Moreover, preparatory work and suggestions for eld testing of the deployed system have been provided. The coverage prediction have been performed by using Astrix 5.0, the radio planning tool of Teleplan. A total of 32 base stations have been suggested to provide ubiquitous coverage of -94 dBm using 92 sectors within the 35.63km2 large area. Furthermore, it has been recommended that xed or nomadic users purchases the si-CPE or CPE PRO for better channel quality and throughput performances at indoor locations. In the preparatory phase prior to eld testing, a python script has been created to perform automated performance testing. The reason for automating the performance measurements has been to increase the test eciency, and to reduce the possibility of human errors in parameter setting, and le naming. This thesis will hopefully serve as a guide for future radio planners, where an Astrix user case, measurement scripts, and data processing codes are provided for revision and editing. The work has been performed on the initiative of Wireless Trondheim.

AT&T U-verse Voice With Home Alarms
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AT&T U-verse TV AT&T U-verse Voice with Home Alarms Your satisfaction with a working home alarm and AT&T U-verse Voice service is our objective. AT&T U-verse Voice service is provided over AT&T's world-class managed network and not the public Internet. Using one network to provide U-verse services enables AT&T to provide high quality service. Voice over IP ("VoIP") providers who utilize the public Internet are less able to control the traffic and ensure voice quality. These providers require you to purchase a high speed Internet service separately. With AT&T U-verse Voice, although you can use your high speed Internet service to manage your AT&T U-verse Voice features, the voice packets do not traverse the public Internet. The diagrams below illustrate some of the differences between AT&T's managed IP network and the separate networks used by VoIP providers who utilize the public Internet. The red dotted lines depict the path traveled by the voice packets. "PSTN" refers to the Public Switched Telephone Network. AT&T U-verse VOIP Network Another benefit of the AT&T U-verse Voice service is that AT&T does not use voice compression to deliver our AT&T U-verse Voice service. VoIP providers who utilize the public Internet commonly use some form of voice compression to reduce the amount of bandwidth needed to transport the VoIP traffic so that customers can surf the web and use the phone simultaneously. The problem with voice compression techniques is that they can cause home alarm signal distortion, potentially disabling your monitored home alarm. AT&T's U-verse network can support the bandwidth required to provide high quality Voice, TV and Internet service simultaneously and therefore does not use voice compression. AT&T has conducted extensive testing and expects that AT&T U-verse Voice will work with many types and brands of home alarms. When AT&T U-verse Voice is installed, the professional AT&T technician will configure the wiring between your U-verse service and your alarm panel in the same manner that it was configured with your local exchange telephone service.

Heavy Duty Electrical Systems Training Manual.indd - Mitsubishi ...

This manual has been developed by Mitsubishi Electric Automotive America, Inc. (MEAA) with the objective of providing a step by step outline of the procedures for troubleshooting problems with your Mitsubishi 12 volt heavy duty electrical system as described below. Three elements will be discussed in this manual, and will be referred to collectively as the “electrical system”: Battery system Starting system Charging system The electrical system also includes the interconnecting wiring and electro-mechanical switches. For the electrical system to function properly and maintain a high level of operating efficiency, all three systems must properly work together. Problems with a vehicle’s electrical system are often misdiagnosed as a starter or alternator problem. A significant number of products returned to MEAA under warranty and deemed “defective” by the customer are found to be “NTF” (No Trouble Found). This manual’s main function is to provide recommended procedures to assist you in properly diagnosing electrical system problems. Proper diagnosis consists of three basic questions: What are the symptoms? Basic observations seen, heard, felt or smelled What has caused the symptoms? Proper diagnostic tool use helps identify the cause of the electrical system problem or failure How is the problem fixed? This step involves part repair, replacement or adjustment These procedures are designed to help you accurately troubleshoot the problem, avoid misdiagnosis and reduce NTF claims. All contribute to reduced operating costs.

TSB_010 - Dixie Electric
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Alternator Trouble Shooting Guide Listed below are some of the more common problems that occur in alternators and charging systems, along with some of the likely causes and remedies. Due to the number of types of units and systems that exist this is only a general listing of the most common problems, possible causes and remedies that are possible. Also check for vehicle specific Dixie Tech Tips. Symptom Low output from the alternator (seen as dim headlights, slow-blinking turn signals, etc) Possible Causes • Worn, cracked, glazed or loose belt • • • Bad battery Battery low on electrolyte Bad battery connection • High voltage drop on wires • Voltage regulator not adjusted properly (when applicable) • Bad wiring harness or fusible links • Bad alternator Remedy • Adjust or replace belt and/or tensioner • Replace battery • Fill battery to proper level • Repair or replace connections or cables • Repair or replace connections or cables • Adjust or replace regulator as necessary (or replace alternator if internally regulated) • Isolate the problem and repair or replace as necessary • Replace the alternator Symptom Output from the alternator is too high (seen as overbright headlights, fast-blinking turn signals, burnt out bulbs, etc) Possible Causes • Bad battery • Bad/maladjusted voltage regulator • • Bad battery connections or main fusible link Bad wiring harness connections Remedy • Replace the battery • Adjust the regulator (when applicable) or replace the regulator or alternator (when internally regulated) • Repair or replace connections or cables • Isolate the problem and repair or replace as necessary REV: 20090820 Courtesy Dixie Technical Department TSB_010.doc Dixie Tech Tips are intended for use by professional technicians, and are not for the general public. They are written to inform technicians of conditions that may exist or as a guide to aid in diagnosing and servicing a vehicle. All references to original equipment manufactures, vehicle manufactures and any other Trade Mark names are for the sole purpose of identifying the vehicle and or part that the Tech Tip applies to. This document is property of Dixie Electric Ltd. and is not to be copied or distributed with out written permission.

Top 10 Aircraft Wiring Mistakes - Vertical Power

Top 10 Aircraft Wiring Mistakes (and how to avoid them) Over the last several years we’ve helped hundreds of builders plan, install and troubleshoot the electrical system on their aircraft. Through all of that we’ve found there are several common mistakes that people make – it’s only natural as people venture into new areas. We’ve written this document to help you avoid those mistakes. These pointers apply equally to traditional wiring as well as aircraft wired using a Vertical Power system. 10. Not learning how the alternator works There are several aspects of alternator operation that are often overlooked yet important to the proper wiring and operation of the aircraft. They are: Alternator capacity. An alternator rated at 60 amps means that it should be able to put out 60 amps to support a 60 amp load from the avionics, lights, and other devices on the aircraft. That does not mean it always puts out 60 amps. It only puts out power equivalent to that being drawn by the devices on the aircraft. For example, the avionics might only draw 12 amps and the voltage regulator adjusts accordingly so that the alternator only puts out 12 amps. When you turn on a 6 amp landing light the voltage regulator adjusts and enables the alternator to put out 18 amps. It’s also important to note that the alternator both recharges a low battery and keeps a full battery “topped off.” For planning purposes, it’s a good rule of thumb to derate the alternator capacity by 20% and assume...

Subaru Forester Receiver Wiring Harness - Subie Files for Subiephiles

Receiver Wiring Forester Radio Connector Pin­out The table below was compiled from all of the Subaru radio wiring diagrams from 1993­2005 (2006 and 2007 model years continue to use this pin­out, but I have not been able to look up the factory wire colors on those years). All Subarus since 1993 (except for the SVX and North American Legacies 1993­ 1994) have used this same 14­pin connector and the same pin­out. A few of the wire colors in the cars have changed over the years, but the functions of the pins have remained the same. The table below shows the wire colors for just the Forester. (Here's a similar table for the Impreza/WRX and one for the Legacy/Outback) Pin numbers on the connector: Table 1 Subaru Forester Radio Connector (Speaker / Power Wiring) Pin Assignments Column "A" Pin # Function Forester Factory Radio Connector Wire Color Column "B" Subaru After ­ market Harness Wire Color (EIA Standard) wires go to Forester's Speakers, etc. 1998­2002 2003­2005 1 Illumination+ Violet Orange 2 Right Front Speaker + Red / Yellow Gray 3 Left Front Speaker + Brown / White White (gap for connector lock) 4 Right Rear Speaker + Blue / Yellow Violet 5 Left Rear Speaker + White / Red Green 6 +12 Volt Memory Blue / Red Yellow 7 Dimmer (Illum.­) Orange / White Orange / White 8 Right Front Speaker ­ White / Black Gray / Black 9 Left Front Speaker ­ Green White / Black (small gap) 10 +12 Volt Accessory Yellow / Green 11 Ground Black Red Black / Red Black (small gap) 12 Right Rear Speaker ­ Red / White Violet / Black 13 Left Rear Speaker ­ Red / Black Green / Black...

International Efficiency Marking Protocol for External Power Supplies

International Efficiency Marking Protocol for External Power Supplies This fact sheet describes the international efficiency marking protocol and its implementation under the ENERGY STAR Version 2.0 External Power Supply specification. Sources for additional information are provided on page 3. This version, updated as of October 2008, replaces an earlier document released in 2005. What is the international efficiency marking protocol? The international efficiency marking protocol provides a system for power supply manufacturers to designate the minimum efficiency performance of an external power supply, so that finished product manufacturers and government representatives can easily determine a unit’s efficiency. This mark does not serve as a consumer information label, but rather demonstrates the performance of the external power supply when tested to the internationally supported test method (this test method titled “Test Method for Calculating the Energy Efficiency of Single-Voltage External Ac-Dc and Ac-Ac Power Supplies (August 11, 2004)” can be found at What does the international efficiency mark look like? The international efficiency mark consists of a Roman numeral (I – VI) that corresponds to specific minimum Active and No-Load efficiency levels (as well as a power factor requirement for level V) and is...

US Energy Efficiency Standards for External Power Supplies - CUI Inc

The purpose of this product training presentation is to explain the US energy efficiency regulations for external power supplies. Objectives  To understand the efficiency criteria required for Energy Star, the international efficiency marking protocol, EISA 2007, and the CEC.  To present CUI’s V-Infinity power product line of external power supplies that meet these standards. Content: 18 pages Learning Time: 20 minutes © 2012 CUI Inc Why does energy efficiency matter? The EPA has identified a large opportunity for energy savings with external power supplies in the US. Many current designs are 50 to 70% efficient, however 90%+ is achievable.  Estimated savings of 32 billion kWh/year  Displace the output of seven large power plants  Cut the national energy bill by $2.5 billion/year  Reduce carbon dioxide emissions by more than 24 million tons/year To decelerate climate change And reducing energy use Must decrease air pollution By using fewer power plants © 2012 CUI Inc How are external power supplies defined? External Power Supply (EPS):  Designed to convert line voltage ac input into lower voltage ac or dc output  Able to convert to only one output voltage at a time  Sold with, or intended to be used with, a separate end-use product that constitutes the primary load  Contained in a separate physical enclosure (product housing) from the end-use product © 2012 CUI Inc How are external power supplies defined? (continued) External Power Supply (EPS):  Connected to the end-use product via a removable or hard-wired male/female electrical connection, cable, cord, or other wiring  Does not have batteries or battery packs that physically attach directly (including those that are removable) to the power supply unit  Does not have a battery chemistry or type selector switch AND an indicator light or state of charge meter (e.g. a product with a type selector switch AND a state of charge meter is excluded from this specification; a product with only an indicator light is still covered by this specification)...