manual

QuickNet Application Guide

Guide for Measuring QuickNet

™

Cable Assembly Lengths

Proper measuring for QuickNet

™

Cable Assembly lengths is straightforward but does require some detailed information

about the data center layout. For the most accurate length measurements, it is best to work from layout drawings and

know the speciﬁc equipment to be used, the cabinet dimensions, and the desired positions in the cabinets of patch panels

and equipment.

The illustration below shows a typical data center link and the sections that must be considered to properly measure for

QuickNet

™

Cable Assembly lengths. This example shows an overhead in-row installation. For other conﬁgurations, adjust

accordingly. (For example, with under-ﬂoor conﬁgurations, measure down from the panels to the pathway).

Recommended Steps for Measuring QuickNet

™

Cable Assembly Lengths:

1. Calculate or measure the length of each section of the link.

2. Add up all the section lengths, including the buffer length. (A + B + C + D + E + F + Slack)

3. Round the total upward to the nearest foot to get the minimum QuickNet

™

Cable Assembly length.

Link Sections & Guide for Measuring:

– In-cabinet length: The total length of the cable inside the cabinet including three distances, A1+A2+A3:

A1 – Horizontal distance along patch panel to vertical manager – Panduit recommends 24 inches (2 feet) to allow

for cable routing.

A2 – Horizontal distance from panel to location of cable entry/exit point in cabinet – this can vary depending upon

where the cable pathway is located above (or below) the cabinet.

A3 – Vertical distance from panel to cable entry/exit point in cabinet – found by multiplying the number of rack

units that the panel is away from the entry/exit point and multiplying by 1.75 inches.

– Cabinet-to-pathway length: The distance from the top of the cabinet to the cable pathway.

– Length along pathway: The total distance along the pathway between the cabinet entry/exit points.

– Pathway-to-cabinet length: Similar to B.

– In-cabinet length: Similar to A, remember to include lengths for all three distances, E1+E2+E3.

– Buffer length (recommended): An additional amount of length to account for cable bulk in pathways and the

lengths of cable bends – Panduit recommends a minimum of 2 feet.

Slack (optional): Additional length determined by user to allow for later movement of assemblies within the cabinet (for

example, for later moves, adds or changes).

Slack

(optional)