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IPL T SFI244 Ethernet Control Interface

Latest IP Link

™

Model Provides More A/V System Management Possibilities

he role of the technical administrator in todayís

organizations has expanded to include A/V system

asset management; increased responsibilities that can

overwhelm available budgets and stafﬁng. Increasingly,

administrators are looking for ways to intelligently

Web-enable their A/V equipment. Integrating A/V sys-

tems into an IP network helps organizations leverage

limited resources and provides the same type of central-

ized remote asset management that IT managers enjoy

for their systems.

One of the biggest challenges in creating

an intelligent asset management system is

the wide variety of control signals required

to make the system work. Professional

A/V equipment routinely provides a se-

rial (RS-232) interface, but communicat-

ing with everything in the room requires

the ability to send and receive analog and

digital signals and send IR commands. The

IPL T SFI244 Ethernet Control Interface

from Extron provides all of that, and more.

The IPL T SFI244 packs the same punch as

its IP Link™ siblings with a built-in high per-

formance Web server and full-blown Ethernet

connectivity. Where it stands out from the rest

is in the number and types of control signals

it can manage. The IPL T SFI244 includes 10

control ports: two serial ports, four Flex I/O

ports and four IR ports. It also boasts IR

learning capability.

Serial Ports

The IPL T SFI 244 offers RS-232

connectivity on two captive screw

ports for bi-directional communica-

tion of two independent serial devices.

When conﬁgured for pass-through mode,

the interfaces can pass through commands

from an existing control system and

communicate with a single device.

Flex I/O Ports

Four Flex I/O ports can sup-

port TTL and analog signals from

0 to 24 volts, allowing management

of a wide variety of devices. The Flex

I/O ports can be conﬁgured in three ways:

analog in, digital in, or digital out.

Flex I/O ports can be conﬁgured to receive

analog voltages for use with photo sensors,

level feedback, strain gauges, thermocou-

ples, variable potentiometers, and other

devices. Incoming analog voltages from

0 to 24 volts are sampled with 12 bit

precision. For example, a thermal

sensor installed in an equipment

rack can be connected to

one of the Flex I/O inputs,

and the IPL T SFI244 can

be conﬁgured to send an

e-mail message, if the rack temper-

ature exceeds a speciﬁed threshold.

When conﬁgured as digital inputs, the Flex I/O

ports can connect to switches, motion sensors,

moisture sensors, and tally feedback. This

provides the ability to receive status

from a variety of devices, including

projector lifts, motorized projection

screens, room partition switches,

and push buttons.

When conﬁgured as digital out-

puts, the Flex I/O ports can drive LEDs, 24

volt incandescent lamps, or other devices

that accept a TTL input signal. For appli-

cations that require contact closure con-

trol, the Flex I/O ports can interface with

an Extron IPA T RLY4, an IP Link

Accessory featuring

four isolated relays.

IR Ports

The IPL T SFI244

includes four fully

programmable IR

ports. Each IR port

can output IR signals with or without the

carrier signal using a wired IR emitter or

through an IR broadcaster. IR control data

IPL T SFI244

8 ExtroNews 15.1 Spring 2004

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