Most copper networks are built using twisted-pair cable. Twist-pair cables are terminated in jacks, cross-connect blocks (66 blocks), or patch panels (110 blocks). The termination is done with a tool known as punch down tool.
The termination connects the twisted-pair cable conductor with insulation-displacement connectors (IDC). IDC is a little knife blade with a V-shaped gap or slit between them.
Knife Block
The punch down tool punches down and forces the twisted-pair cable conductor into the V. Then the IDC connector makes contact by cutting through, or displacing, the insulation around a single conductor inside a twisted-pair cable.
The punch down tool pushes a conductor between the sides of a "V" inside an IDC, allowing the small metal "knife" inside the connector to make contact with the inner conductor inside the wire.
A punch-down tool is really just a handle with a special blade that fits a particular IDC.
There are two main types of punch down tools (corresponding to two types of IDC terminations): the 66-block and the 110-block.
The 66-block is mostly used in cross-connect blocks for voice cross-connects. The 110-block is now generic in usage and is a newer design by AT&T. 110-Block is most used for data network, although it is not absolutely so.
The process of punching down a wire properly takes a considerable amount of force. You could just use a small flat-blade screwdriver, but you would probably break the wire or not be able to make the proper connection at all.
The punchdown tool helps you in applying the right amount of force in the right direction. Different blades are used depending on whether you are terminating 110-blocks or 66-blocks. Though the blades for each type are pretty different, most punch down tools on the market today can accept both types.
As you punch in with the tool, you load up a spring that then releases the proper amount of force to press the wire firmly into the connector while stripping the insulation off the side of the wire to assure a firm connection.
Christmas Sales Henckels 20-Slot Super Knife Storage Block 201
Dec 09, 2011 05:50:45
Click for larger image and other views
Christmas Sales Henckels 20-Slot Super Knife Storage Block Feature
- 20-Slot to house 8-steak knives and cutlery
- Made of Hard wood
- Great for counter tops
- Ideal for all sizes of cutlery
- Twin logo on side
Christmas Sales Henckels 20-Slot Super Knife Storage Block Overview
Dull cutlery is dangerous cutlery. One of the easiest ways to maintain sharp edges on your fine cutlery is to store the knives in a block. An added benefit is that your knives are conveniently ready and waiting for the next time you need to carve a roastSAVE NOW on Christmas Sales Offers below!
Available In Stock. |
| This Christmas Henckels 20-Slot Super Knife Storage Block ships for FREE with Super Saver Shipping. |
Price : Click to Check Update Prices Please. |
Limited Offer Today!! Henckels 20-Slot Super Knife Storage Block Christmas and Cyber Monday 2011 Deals
Drills Power Tools Cordless Drill Lithium Ion Solder Station