Specifications

4
For orders please call 888 874 3336 (Branch Locations) or 800 366 4472 (Technical Sales) Visit us on the web at www.tri-ed.com
Specifications are subject to change without notice. Products may not appear as shown. Trademarks are the property of their respective owners. We are not responsible for any errors or omissions in specifications and do not warrant the same. © 2014/15
IP Video Tips:
IP video continues to grow in popularity with deal-
ers and end users. End user demand is being
driven by the desire for higher resolution video.
While one of the bigger objections security deal-
ers have had is the high cost, it is a barrier that
has been coming down due to the release of cost
effective offerings from numerous manufacturers.
ALL-IN-ONE SYSTEMS
Tip No. 1 - Start small
If you are hesitant to get into offering IP video
to your customers, consider starting with some
small systems. Some of the newer IP based
video products have been designed to install
more like analog systems. Some
network video recorders are now
available with a built-in PoE switch
which allows for direct attachment
of up to 16 IP cameras, similar to
a DVR. In most cases, these
systems are designed to
eliminate the need for the
installer to address the at-
tached cameras. So, while
having IP Addressing skills
is advantageous, it’s not a
necessity. Ask your TRI-ED
sales professional to help
you select the product that
is right for your application.
NETWORK SWITCHES
Switching is a key component in all IP solutions.
If you are unfamiliar with these products, here are
some key points to keep in mind when you are
selecting your switches.
Tip No. 2 – Choose your switch last
Selecting a switch that serves your purpose in
a cost effective manner requires a solid under-
standing of all the projects requirements. Where
will the switch be located? What bit rates do the
devices generate? Which devices will be pow-
ered by the switch? What are the PoE classifica-
tions of those devices? How many total network
devices? Without answering these questions
first, a poor decision could be made.
Tip No. 3 – Know your environment
Switches perform best when kept within the tem-
perature range for which they were designed. A
typical IT style switch is designed to be placed in a
wiring closet with environmental controls. Some
of your jobs will require you to place a switch in a
far less desirable location, like an unconditioned
warehouse, an attic or perhaps in a NEMA box
on a pole in a parking lot. In these instances, in-
dustrial switches will provide the ruggedness and
extended operating temperature range required.
Tip No. 4 – Calculate your throughput
Once you’ve selected your IP cameras you will
need to calculate the throughput necessary to
support the traffic. For best results use the de-
vice manufacturer’s calculator to determine the
bit rate. The bit rate is calculated after entering
variables including the resolution, frame rate,
compression codec, and scene complexity. The
minimum throughput required of the switch will
be the combined bit rates of all attached devices.
Tip No. 5 – Calculate your PoE
requirement
Every PoE device’s power requirement should
be found on the data sheet and rated in watts or
by PoE Class. Use the chart below to determine
the watts required. Class 0 devices should be
calculated as requiring 15.4 watts. To eliminate
shortfalls, calculate the requirement using the up-
per end of the range. Better to have a little too
much PoE budget than not enough.
802.3af – Up to 15.4 watts per port
Class 0 – Classification not implemented
Class 1 – 0.44 – 3.84 watts
Class 2 – 3.84 – 6.49 watts
Class 3 – 6.49 – 15.4 watts
802.3at (PoE+) – Up to 30 watts per port
Class 4 – 12.95 – 30 watts
Note: If a device requires more than 30 watts to be delivered
over the network cable it will use a specialized PoE injector.
Tip No. 6 – Leave yourself some room
Every connected device will require a port for
attachment. Whenever possible, leave your-
self some open ports for future additions. The
same goes for your PoE budget - having some
additional capacity allows for easier and less ex-
pensive modifications or additions to the system
down the line.
Tip No. 7 - Fast Ethernet vs. Gigabit
A good rule of thumb is to avoid exceeding 50%
of the switch’s total throughput. A Fast Ethernet
switch has a rated throughput of 100 Megabits
per second (Mbps) while a Gigabit Switch is
rated at 1 Gigabit or 1000 Mbps. By limiting the
load to 50% of the switch’s capacity there will
be more than enough processing power for it to
function efficiently. Some Fast Ethernet switches
have optional Gigabit ports that create a higher
throughput outbound path for data collected on
the standard ports. Where Gigabit ports like this
exist,you will be able to pass significantly more
than 50Mbps of data using those ports.
Tip No. 8 – Gigabit switches are
preferred
Whenever possible we suggest using Gigabit
switches. They have a more robust internal pro-