The Leader in Wireless & IP Video Systems
TOTAL TURNKEY SOLUTIONS FOR OUTDOOR WIRELESS & IP VIDEO APPLICATIONS
2009 Summer Edition
The bi-monthly eNewsletter is an online publication from Inscape Data
Corporation. It covers the most up-to-date business information about
Inscape Data's products. In this bi-monthly eNewsletter, you will find
valuable information, such as new product release news, application
notes, technology update, success stories, and help desk.
Inscape Data Corporation, the leader
in wireless and IP video systems is launching the industries first outdoor
all weather adjustable voltage PoE switch. Designed and maufactured with Inscape Data's patent pending technology, the
LinkPower LPS1000 fill the gap in power sourcing equipment (PSE) to support passive
PoE, 802.3af standard PoE voltages, and all weather design. The LPS1000 PSE saves installation cost by
simplifying power device (PD) wiring, deployment, and eliminates the need for
mid-span passive PoE power injectors.
Data Corporation's New LinkPowerTM LPS1000 Adjustable Voltage PoE Switch, The Industries First Outdoor PoE Switch
The LinkPower LPS1000, when used in
wireless ISP industry can effectively and reliably power five wireless IP
radios. A common configuration of four Inscape
Data's new AirEther SB54 dual band wireless IP radios and one AirEther BR108 high
capacity wireless backhaul radio makes up a high power license exempt wireless
network transmission tower.
The five high-power PoE ports provided by the LPS1000 can easily support multitude of combinations with pre-standard and
standard PD configurations. Few
application examples include:
Transducers and Sensors
Access Points, i.e. Hot Spots
- Outdoor VoIP Base Station
Fixed Wireless Base Station
Base Stations PD
Based on the flexibility of the
LPS1000 supporting PD with 12VDC, 24VDC, 48VDC, and 802.3af, powering
multi-vendor application specific equipment from a single PSE is now possible.
Data Corporation also offers single port and dual port mid-span passive PoE
injectors for less challenging PD installations. The single voltage PIP100 is the one port
option and PIS200 is the dual port option.
The PIS200 is unique as it delivers a single voltage on both port of the
injector. This allows for powering and
network connection of two PD with one PIS200 injector and DC supply. An additional feature of the LPS1000 and
PIS200 is PoE port transient voltage surge suppression. Surge suppression safely protects the vital
PoE port from surge related damages. For
PD without any intrinsic transient voltage surge suppression, the PES100 inline
surge suppressor's offers industrial protection for your investment.
Inscape Data continues its tradition
this year to offer the LinkPower LPS1000, PIP100, PIS200, PES200, SB54, and
SC54 products to meet the challenges of enterprise, physical security, and
internet service providers. With
equipment maintenance cost high on the list of company expenses, Inscape Data
Corporation's products are easy to install, future proof, and provide rugged
reliable wired or wireless interconnectivity of mission critical applications.
For more information regarding the new
products mentioned in this article or other rugged IP based products from
Inscape Data Corporation please visit us at http://www.inscapedata.com or contact an
Inscape Data channel partner today.
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Power Over Ethernet - Simplifying Your PoE Deployment
IntroductionFigure 3. PSE
Midspan and Endspan Comparison
Power over Ethernet (PoE) is an evolving technology designed
to deliver power and data on an Ethernet cable at the same time. Modeling after
telecommunication systems which supply power to telephones, PoE powers network devices
without the need of an AC electrical outlet. By eliminating the power cord
infrastructure, PoE technology simplifies wiring and deployment providing
convenience and benefits to enterprise, commercial, industrial, and residential
Example of LinkPower LPS1000 PoE Switch
Telecommunication systems utilized phantom power in powering
telephone handsets. This was a very
practical approach used by the telecom service providers in providing telephone
service to homes and businesses. When local
AC power outages occurred, phantom power kept phone system working, hence, the
ability to continue to make phone calls.
Phantom power is a method that provides DC electrical power through
cables to operate the interfacing device containing active electronic
circuitry. Like phantom power, PoE
technology and devices had great success in the market place.
The demand for PoE technology began in the year 2000 with the
introduction of IP telephony. Since IP
telephone equipment requires power to operate, its deployment is simplified by
combining power and data transfer in a single Ethernet cable. The technology soon was adopted by other IP
based applications. With an increase in PoE usage and the need for a common PoE
interface, the IEEE standard for PoE or 802.3af, was soon released. Today there
are three basic types of Power-over-Ethernet (PoE) devices; one is what we
often refer to as pre-standard or passive PoE, the IEEE 802.3af standard, and the
proprietary active PoE.
These types of PoE devices deliver power over the spare
pairs (pins 4, 5, 7 and 8) of a CAT3, CAT5,
CAT5E or CAT6
type Ethernet network cable. It delivers the voltage across the spare pairs of
an Ethernet cable. This pre-standard version of PoE is implemented in many
different manufactured products. These chipsets are lower cost than 802.3af
compliant chipsets which can result in lower product cost. Additionally, with
pre-standard PoE, power may be easily applied to a powered device using DC
voltage from multiple sources such as automobile batteries or solar solutions. Many PoE Vendors opt out of 802.3af due to
the 13 watts maximum power specification, which is too low for higher demanding
powered IP applications.
Figure 2. Example of a
PIP100 Passive PoE Mid-span Injectors
The most commonly used Ethernet cable, CAT5e,
uses 24 AWG copper conductors, which can safely carry 360 milliamp of current at
50 volts. The cable has eight conductors
with only four conductors being used to provide power. Therefore, the maximum direct
current power transmitted is 50 V × 0.360 A × 2 = 36 W. Considering the voltage drop of 3 volts of DC
every 25 meters of cable length, at 100 meters, a powered device would only receive
31.6 watts of usable power.
Power planning and cable length is an important consideration
when using passive PoE technology. Utilizing longer cables without accounting
for the device's power requirements may cause intermittent operation and
Let's look at the Inscape Data AirGoggle NVC300 Fixed Dome
IP Video Camera as a planning example. The NVC300 PoE power requirement is 8.4
watts and minimal voltage of 7 VDC. If using a 12VDC
passive PoE injector with 50 meters of CAT5e
cable, the camera would receive 8.4 watts of power at 6VDC.
This would be marginally below the minimum voltage requirement of 7VDC
for the NVC300 IP video camera. This
calculation used the 3 VDC voltage drop for
every 25 meters of cable used. A more
ideal passive PoE injector voltage would be 18 VDC
at 50 meters of cable length or 24 VDC at 100
meters. If planned well, passive PoE
technology provides very reliable, cost effective, and flexible power
implementation for powering PoE enabled devices.
Although not defined, pre-standard PoE equipment also
utilizes similar nomenclature for standard PoE technology powered devices and
power sourcing equipment.
The IEEE 802.3af standard compliance PoE technology is based
on the concept of active power delivery with feedback loop. In order for the 802.3af technology to work
properly, the standard must be implemented in the powered sourcing equipment
(PSE) and the powered device (PD).
Power Sourcing Equipment (PSE) is equipment that supplies
power to a powered device. A PoE capable switch is the most common example of
PSE. Acting as a power transmitter, the PSE has three main job functions:
of PD and determination of the PD's power level
of power to the PD according to the power level negotiated
and stoppage of power delivery to the PD
There are two types of PSE defined in this standard, the endspan
and the midspan. An endspan PSE is a PoE capable port that carries both data
and power on the link, while a midspan PSE stands between a common Ethernet
port and a PD to help inject power. Midspan
offers a solution when adding PoE to an existing network infrastructure without
changing its original configuration.
Powered Device (PD) is a device that receives power from
PSE. More and more networks today have attachments such as IP phones, wireless LAN
access points, and IP cameras all designed as PDs. Due to the different power requirements
needed by various PDs, IEEE802.3af defines an option to classify PDs into classes
according to their power consumptions. Following the process of classification,
a PD informs the PSE of its power range so the PSE can apply more efficient
power. Table 1 details the class and the
corresponding power levels delivered from PSE and received by PD.
Maximum Power level
0.44 to 12.94
0.44 to 3.84
3.84 to 6.49
6.49 to 12.95
PSE classify as Class 0
Table 1. PD Power
There are two different modes included in the
802.3af standard. Mode A is to apply the power over the same data pairs (pins
1,2,3 and 6) as the data that is being transported. This is true of both 10/100
and 1000BASE-T networks. Mode A is sometimes referred to as phantom power. Mode
B allows the power to be carried over the unused pairs (pins 4, 5, 7 and 8).
However, a pre-standard PSE or injector using power over the unused pairs may not
operate with an 802.3af PD due to various power negotiations occurring between
the PSE and PD, such as detection and classification.
The introduction of network devices that require more than
15.4W such as notebooks, video phones, PTZ
IP cameras, and WiMax base stations, has compelled the IEEE 802.3 workgroup to
develop a new PoE standard that can deliver even more power than defined in the
IEEE 802.3af standard. This new standard, IEEE 802.3at, derived in 2004, was
designed to deliver at least 30W per port of inline power. Transmitting more than 15.4W of power per
port poses significant challenges. One such challenge lies in the physical
characteristics of copper cabling, which can overheat or become damaged when
transmitting power above certain thresholds. The IEEE workgroup is exploring
different means of transmitting higher levels of power subject to these
limitations. Another challenge is backward
compatibility with the IEEE 802.3af standard. This interoperability could be
crucial to the successful adoption of 802.3at. Therefore, the IEEE is working
to make sure that 802.3at-compliant PSEs are able to interoperate with 802.3af
powered devices and vice-versa. As a
result of these and other implementation challenges, the IEEE 802.3at standard
is not expected to be finalized any time soon.
PoE products utilizing proprietary active PoE technology are
vendor specific and usually not interoperable between vendors. Since the install base for proprietary Active
PoE is small, products based on this technology are usually very costly. The following sections omit the discussion of
proprietary Active PoE technology and focuses on pre-standard and standard PoE
PoE eliminates time, cost and effort required to install
separate 110/220 Volts Alternating Current (VAC) power to the remote PD. Using
the power derived from the Ethernet connection eliminates the need for a
localized battery back-up, preventing any data loss or security breaches. All PD
devices can be protected by a single centralized UPS.
There are two methods of interfacing power to the Ethernet
cable. First, a mid-span powered hub is connected in cascade with the Ethernet
switch (refer to Figure 4A). Second, the end-span (end-point) power module is
fully integrated in the Ethernet switch delivering power without the need for
additional components (refer to Figure 4B).
of mid-span PSE equipment are Inscape Data Corporation's PIP100 1-port PoE injector
and PIS200 2-port PoE injector with surge suppression built-in. The LinkPower LPS1000 5-port adjustable
voltage PoE switch is an all-in-one end-span PSE type of equipment. Inscape Data Corporation's SB54 all-weather
dual band access point / bridge and NVC series IP video camera are examples of
Figure 4A LPS1000 End-span PSEFigure 4B PIS200 Mid-span PSE
Depending on which PoE technology is used, there may be a
need for end-span, mid-span, or both systems in an application. End-span approach is preferred to reduce
system component count. With the
introduction of Inscape Data's Link Power LPS1000 end-span adjustable voltage
PoE switch, pre-standard PoE support, 802.3af, remote port restart, Ethernet
port surge suppression, and all weather enclosure are all inclusive to simplify
each PDs' powering needs. The differences
between the Inscape Data LPS1000 and currently common alternatives are
highlighted in Figure 5.
Figure 5 LinkPower LPS1000
takes the mess out of PoE installations
PoE offers great cost savings and flexibility in deploying
equipment. Applications currently
utilizing PoE technology range from, but not limited to, the following:
Transducers and Sensors
Fixed Wireless Base Station
Wireless Customer Premises Equipment
Collection, Time and Attendance Control
and Lighting Controls
Benefits of PoE
Outdoor PoE Challenges
The benefits provided by PoE technology are more than just simplifying
the wiring. Benefits also include:
Cost savings in the time of deployment and costs associated
allows for deployment without traditional high voltage electrical circuits,
eliminating the creation and maintenance of power infrastructures such as
cords, outlets, and conduits. Cost
savings associated with the need to subcontract expensive high voltage
electricians is also eliminated.
Easy to Install
PoE requires one set of wires to the PD. Vendors and users both benefit from this
simplified installation concept.
Since PoE PDs may be deployed up to hundreds of feet away
from AC outlets, the location flexibility of PDs simplifies cabling layout and
power restrictions. Systems like IP
cameras and wireless access points can be located in more secured locations to
avoid intentional tampering.
PoE architecture allows centralized power management by
managing the PSE to an uninterruptable power supply (UPS)
system. By attaching a battery backup system to the PSE, the PD is guaranteed power
even when there is a main power failure.
Outdoor PoE applications pose new challenges for outdoor PSE
systems. With increasing demand for cost effective IP devices, many new PDs are
now operating both indoors and outdoors.
IP video camera systems used to monitor the inside of buildings are now finding
their way onto street lights and utility poles for public safety and traffic
monitoring. The core challenges of
powering outdoor PDs are:
Data Corporation, the leader in wireless and IP video systems' introduction of
the LinkPower LPS1000 Adjustable Voltage Outdoor PoE Switch based on Inscape
Data's patent-pending proprietary technology tackles the challenges of outdoor
PoE applications. The LPS1000 is a unique and powerful outdoor five-port
Ethernet Switch with an adjustable voltage feature. Based on our patent-pending
technology, the LPS1000 offers four discrete voltage levels, which covers a
wide range of outdoor network and security application opportunities and
significantly reduces the complexity of outdoor network installation,
integration and ongoing network maintenance.
The LPS1000 boasts the following features:
Power Source Location
PD voltage types
configure and manage each independent powered network port of the LPS1000 via
enclosure rating and water tight connectors based on patent pending technology
Independent Port Voltage Adjustment
DC Voltage with PoE voltage of 12VDC, 24VDC, 48VDC, and IEEE 802.3af
and Power LED display
LED indicators show operational power levels at each networkport
Connect up to 5 different PoE devices or uplink switch at 10/100 mbps speeds with Auto-MDX cross over feature
to install brackets allow for wall or mast mounting of the LPS1000
Power over Ethernet is an emerging technology that will
change the way both network and non-network devices are used. With the rapid
increasing deployment of PoE enabled PDs, residential, retail, enterprise, and
industrial users will all benefit from the cost savings as well as the simplicity,
reliability, and flexibility. Outdoor
PoE PSE and PD face diverse challenges of diverse power systems and extreme operating
environments. By providing flexible PD
voltage support and remote restart capability, Inscape Data Corporation's
LinkPower LPS1000 overcomes practical deployment problems in outdoor environments
and brings a new concept to outdoor PoE switching. The adjustable voltage, remote reset,
individual port monitor, and much more, makes the LinkPower LPS1000 the
industry's only adjustable power outdoor PoE Switch.
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The AirGoggle PTZ camera model, NVC910, NVC1000s, and NVC3000s
comes pack with features. In addition to
the core functionality of panning and tilting with a click of a computer mouse,
it is capable of 165 preset location, 8 tours, 8 patterns, and auto scanning
features. On top of all this, a 4 or 2
external sensor port, depending on model, is capable of triggering any of the
presets, tours, and patterns. To enable
this feature and provide intelligent event surveillance and recording, please
follow these simple steps.
External Sensor Trigger of Inscape Data PTZ IP Video Cameras
Inscape Data NVR100 or NVM1000 video management software, execute the
virtual controller and OSD menu for the Inscape Data PTZ network camera.
to the Dome Setup and Enable Alarm.
to the Alarm Set Item and configure external sensor input ports 1,2,3,4 if
port has the following options the user may set
Input (NO=Normally Open, NC=Normally Closed, OFF)5. Configure
each port if desired and click save.
Once done, exit out of the onscreen display menu.
ACT (Preset 1~64 & 100~200, Tour 1~8, Pattern 1~8)
this point the configured sensor port will trigger when the sensor is
tripped and may activate a preset location, tour, or pattern depending on
NVM2000 licensed software, external sensor trigger is configured
differently. Please reference to the
user manual for more details.
Controller and "Alarm Set" option