Lecture

Week 33 Lesson Plan Addendum

Cabling, Labeling, Procedures


This lesson is about procedures. Writing procedures can be a full time job and the effective technician will become expert at this task. The technician that writes and maintains the troubleshooting manual that contains these procedures will be the one that rockets to the head of the department or even to the head of the IT department. This task is even more important to any large company than the actual repair itself. Write procedures on the following tasks:


How to test battery output using tester

How to test battery output using ohmmeter

How to install a motherboard

Power supply

Processor

Hard disk

A-drive

CD-ROM

Memory

How to install drivers for

Sound cards

Video cards

Nic cards

Describe the boot process and what one should see

How to install peripheral equipment

Keyboard

Monitor

Mice

Speakers

Create a list of troubleshooting tips for these symptoms

No video

Checksum errors

Slow loading

Virus discovery

Spyware

Inappropriate calling of the Internet

How to perform maintenance

Defrag

Clean disk

Outside cleaning

Chkdsk /F

Antivirus

Spyware

Install Linux

Install printers locally

Install printers networked

How to setup share

How to control the network neighborhood

Binary Conversion Table

ASCII table

Connector Pinouts

Beep Code Lists

Device Manager Codes

Troubleshooting Methodology Description

How to edit the registry

How to activate Windows XP, Vista

System Requirements for XP, Vista, 2000, Linux



Cable labeling

There are two styles of cable labeling. Both styles involve the assignment of reference letters to specific rack locations of devices and or cabling. The military style of rack labeling is to assign an Alpha-numeric reference to each piece of equipment in the rack. The commercial style involves assignment an alphanumeric reference to each 2 and ¾ inches of vertical rack height.

A reference for rack locations will look something like:


A5a1


The first A refers to the front of the rack. The #5 refers to the fifth device or location from the top of the rack. The second A refers to the left most position in the A5 location. The #1 refers to the first connection at that location. There can be more or less designations of the location but for our discussion here, we will limit the connection labeling to this sequence of alphanumerics.

One has to create a list of to and from for cable labeling purposes. A cable label will consists of three lines of information. The first line will consist of connectivity info for the end you are holding (what it plugs into). The second line of information on the label designates the other end of the cable (where it goes). And the third line gives the cable a reference designator such as a wire number such as W10023. Conversely, the other end of the cable will have the same label with the first and second lines reversed (obviously the ends of the cable are reversed so the label must be as well).

Usually within an existing organization, the labeling of cables has already been accomplished and you will just have to learn what someone else has already established. However, on many occasions, you as the lead technician will be asked to design and implement a cable labeling scheme both within your organization and for your customer. For example, if your customer is the federal government, there are established rules for cable labeling but they may not be followed. You will be expected as part of your daily task issues to learn and demonstrate a proficiency in the scheme that they use.

All devices in a rack are to be labeled. The next task associated with the learning of the cable labeling scheme is to maintain the records of all cabling in your organization. It is not a good idea to trace cabling through ducting or walls to find the other end of the cable. It also is a very good idea for your organization to not rely on the old geezer in the corner to remember and to tell you where the other end of the cable is located. After all, he may retire and never pass on his secrets. Remember, knowledge is power and one of the secrets that a lot of people believe makes them a little more valuable to their organization (and also a little more immune from layoff or firing) is that no one else has their knowledge and little secrets of cable labeling. You may run into opposition from the old timers for this very reason but you still need to persevere and get the data even if you have to do it yourself.

The other task we are going to become expert at is to create a drawing from a list of cable labels. As with anything in the computer world, accuracy is everything.

The other part of this task is to create the ability within yourself to not only document where all the cables go in your organization, but to create documents that reflect rack elevations, interconnectivity diagrams, cabling lists, cable labeling lists, etc.

.Construction House Wiring


This task is an onsite installation of the cabling, devices, and connectivity associated with the installation of a pre-wired house. The house being constructed by the Construction Trades class also includes the installation of cabling to support multiple telephone outlets, multiple TV or satellite outlets, and multiple internet connectivity outlets.

The actual as built will depend upon the design of the house but for generic purposes, each bedroom will have at least one telephone, TV, and internet connection that runs into a central MDF located either in the basement or the garage. There may be multiple connections in a bedroom. There will also be various connections in the kitchen, living room, and probably the dining room area.

The task for each outlet includes the installation of cabling from each outlet, down through some piping (usually but not always), across the ceiling of the basement or garage, and terminating into a 14x14 inch MDF box. The cables should be labeled with temporary labels at this point (such as cable #1, #2, etc.) to allow identification while pulling the cable through the building. The cables should be terminated into the appropriate connector at the wall outlet box. After completion of the termination of each cable, the outlet cover may be installed but only after the finished cable label is installed. This label may take a while to generate. If the time frame is too long (like overnight), the wall outlet cover is to be installed loosely awaiting the proper label.

The MDF box is mounted onto the wall and contains punch-out entrance holes for the cabling. We use the top of the box for entrance of the cabling. Within the MDF box, is located a patch panel distribution panel for the telephone connections, a splitter for the TV connections, a patch panel to hub panel, the hub itself, and a power outlet. Each of these panels connects to the MDFD frame with push in connectors. Also installed will be jumper cables from the patch panel to the hub.

The task is usually a couple day task with multiple classes due to the constraints of taking the classes over to the site via bus and scheduling conflicts with other classes.