WLS-IFC

Specifications

Document Revision 1.1, February, 2010
© Copyright 2010, Measurement Computing Corporation

Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Wireless communications
Table 1. Wireless communications specifications
Communication standard
Range
Transmit power output
Receiver sensitivity
RF channels
Addressing
Encryption

IEEE 802.15.4, ISM 2.4 GHz frequency band, non-beacon, point-to-point
Indoor/urban: Up to 150' (50 m)
Outdoor RF line-of-sight: Up to 1/2 mile (750 m)
10 mW (10 dBm)
-100 dBm (1% packet error rate)
12 direct sequence channels available, channels 12 – 23 (2.410 – 2.465 GHz)
(software selectable)
16-bit PAN (personal area network) IDs per channel (software selectable)
64-bit device address
128-bit AES (software selectable)

Note 1:

Contains FCC ID: OUR-XBEEPRO. The enclosed device complies with Part 15 of the FCC
Rules. Operation is subject to the following two conditions: (i.) this device may not cause
harmful interference and (ii.) this device must accept any interference received, includinginterference that may cause undesired operation.

Note 2:

Canada: Contains Model XBee-PRO Radio, IC: 4214A-XBEEPRO

Caution! To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distanceof 20 cm or more should be maintained between the antenna of this device and persons during
device operation. To ensure compliance, operations at closer than this distance is notrecommended. The antenna used for this transmitter must not be co-located in conjunction withany other antenna or transmitter.

MemoryTable 2. Memory specifications
EEPROM

256 bytes USB micro for external application use

Microcontroller
Table 3. Microcontroller specifications
TypeHigh performance 8-bit RISC microcontroller

USB +5V voltage
Table 4. USB +5V voltage specifications
Parameter

Conditions

Specification

USB +5V (VBUS) input
voltage range

4.75 V min. to 5.25 V max.

1

WLS-IFC

Specifications

Power
Table 5. Power specifications
Parameter

Conditions

Specification

Supply current
Note 3:300 mA max (Note 3)

Self-Powered Hub refers to a USB hub with an external power supply. Self-powered hubs allow
a connected USB device to draw up to 500 mA. This device may not be used with bus-poweredhubs due to the power supply requirements.
Root Port Hubs reside in the PC's USB Host Controller. The USB port(s) on your PC are rootport hubs. All externally powered root port hubs (desktop PC's) provide up to 500 mA of current
for a USB device. Battery-powered root port hubs provide 100 mA or 500 mA, depending upon
the manufacturer. A laptop PC that is not connected to an external power adapter is an example
of a battery-powered root port hub.

USB specifications
Table 6. USB specifications
USB device type
Device compatibility
USB cable type
USB cable length

USB 2.0 (full-speed)
USB 1.1, USB 2.0
Bus powered, 300 mA consumption max
A-B cable, UL type AWM 2725 or equivalent. (min 24 AWG VBUS/GND,
min 28 AWG D+/D-)
3 meters max.

Environmental
Table 7. Environmental specifications
Operating temperature range
Storage temperature range
Humidity

0 to 70 ° C-40 to 85 ° C
0 to 90% non-condensing

Mechanical
Table 8. Mechanical specifications
Dimensions

79 mm (L) x 75 mm (W) x 26.5 mm (H)2

WLS-IFC

Specifications

LED configuration
Table 9. LED configuration
PowerReceived Signal Strength Indicator(RSSI)

USB activityTransmitReceiveThe WLS-IFC is connected to a computer or external USB hub
3 green LED bar graph. The LEDs will turn on when receiving a wirelessmessage and stay on for approximately 1 second after the end of the message.
They indicate the amount of fade margin present in an active wireless link. Fademargin is defined as the difference between the incoming signal strength and thedevice's receiver sensitivity.
 3 LEDs on: Very strong signal (> 30 dB fade margin) 2 LEDs on: Strong signal (> 20 dB fade margin) 1 LED on: Moderate signal (> 10 dB fade margin)
 0 LEDs on: Weak signal (< 10 dB fade margin)
Green LED – indicates activity over the USB connection
Yellow LED – indicates transmitting data over the wireless link
Red LED – indicates receiving data over the wireless linkUSB
Received
SignalStrength
Indicator

Transmit
ReceivePower3

Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com
WLS-IFC-spec.doc