Crestron Electronics CWD7041 Two-Way RF Transceiver Module User Manual Manual CWD7041 Doc7263A
Crestron Electronics Inc Two-Way RF Transceiver Module Manual CWD7041 Doc7263A
Manual
Crestron CWD7041
Two-Way RF Transceiver Module
with Integral Antenna
Operations Guide
This document was prepared and written by the Technical Documentation department at:
Crestron Electronics, Inc.
15 Volvo Drive
Rockleigh, NJ 07647
1-888-CRESTRON
Regulatory Compliance
Federal Communications Commission (FCC) Compliance Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following conditions:
(1) This device may not cause harmful interference and (2) this device must accept any interference received,
including interference that may cause undesired operation.
CAUTION: Changes or modifications not expressly approved by the manufacturer responsible for compliance
could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more if the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
Consult the dealer or an experienced radio/TV technician for help
Industry Canada (IC) Compliance Statement
Operation is subject of the following two conditions:
1. This device may not cause interference, and
2. This device must accept any interference, including interference that may cause undesired operation of the
device.
To satisfy RF exposure requirements, this device and its antenna must operate with a separation distance of at least
20 centimeters from all persons and must not be colocated or operating in conjunction with any other antenna or
transmitter.
All brand names, product names and trademarks are the property of their respective owners.
©2011 Crestron Electronics, Inc.
Crestron CWD7041 Two-Way RF Transceiver Module with Integral Antenna
Operations Guide - DOC. 7263A Contents i
Contents
Two-Way RF Transceiver Module with Integral Antenna: CWD7041 ......... 1
Functions and Features .............................................................................................................. 1
Specifications ............................................................................................................................. 2
Physical Description .................................................................................................................. 2
Ports ............................................................................................................................. 3
Power/I-O .................................................................................................................... 3
Labeling Requirements .............................................................................................................. 4
Documentation ........................................................................................................................... 4
Crestron CWD7041 Two-Way RF Transceiver Module with Integral Antenna
Operations Guide - DOC. 7263A Two-Way RF Transceiver Module with Integral Antenna: CWD7041 1
2.4 GHz frequency band, IEEE 802.15.4 specification
Range from 3 feet to 50 ft.
Operates on one of sixteen available channels to establish optimal
signal quality
Two-Way RF Transceiver Module
with Integral Antenna: CWD7041
Functions and Features
The CWD7041 (hereafter referred to as “module”) is a two-way radio frequency (RF) module that
utilizes the 2.4 GHz frequency band to communicate with other devices.
The module operates according to the IEEE 802.15.4 specification and can be configured to minimize
the possibility of interference with other devices.
The module receives RF signals from one or more Crestron devices and can transmit these signals over
the air or over a cable run for further processing (depending on the application).
Functional Summary
Two-Way RF Transceiver Module with Integral Antenna Crestron CWD7041
2 Two-Way RF Transceiver Module with Integral Antenna: CWD7041 Operations Guide - DOC. 7263A
Specifications
The table below is a summary of specifications for the CWD7041.
Specifications of the CWD7041
SPECIFICATION DETAILS
Power Requirements 0.22 Watts (3.3VDC @ 0.067A)
Operating Frequency 2400 MHz to 2483.5 MHz (802.15.4 compliant)
Operating Ranges*
Minimum Distance
Maximum Distance Outdoors
(without repeater device)
3 ft
550 ft
Available Channels 16 (numbered 11 through 26 per 802.15.4)
Serial Communication SPI, 3.3V Nominal
Dimensions Width: 1.25 in (3.18 cm)
Height: 1.57 in (4.00 cm)
Depth: 0.50 in (1.27 cm)
* The location and orientation of the module are important factors in the RF performance. With the unit located outside
of any metal enclosures, the antenna is adjusted to achieve the best range. The range is dependent on its placement and
the building in which it is used. The construction of the building, obstructions, and RF interference from other devices
are factors determining the effective range of the unit. To prevent unit-to-unit RF interference, multiple modules
operating at the same frequencies should not be installed within 3-5 feet of each other.
Physical Description
The module, shown below, consists of various components attached to a printed circuit board. An
antenna is attached to the circuit board while a 25-pin header is for the application-specific installation.
Physical View of CWD7041
Crestron CWD7041 Two-Way RF Transceiver Module with Integral Antenna
Operations Guide - DOC. 7263A Two-Way RF Transceiver Module with Integral Antenna: CWD7041 3
CWD7041 Detail View
Ports
The module contains a 25-pin header. Refer to the diagrams and descriptions that follow.
Power/I-O
The 25-pin header provides power to the module, serial communications between the module and
wired devices, as well as connections to the debug port. Refer to the following table for pin
assignments of the module interface connector.
Power/I-O Pinout Signals
Pin # Signal Pin # Signal Pin # Signal
1 SPI MISO 10 RESET 18 PB6
2 PB4 11 PA6 19 PC2 / JTDO
3 SPI_MISO 12 +3.3V 20 PB7
4 PB3 13 PB1 21 PC3 / JTDI
5 SPI_CLK 14 GROUND 22 PC0 / JRST
6 PA7 15 PB2 23 PC4 / JTMS
7 PA4 16 PB5 24 PC1
8 PC7 17 JTCK 25 PB0
9 PA5/PTI_DATA
1.57 in
(4.00 cm)
1.25 in
(3.18 cm)
Two-Way RF Transceiver Module with Integral Antenna Crestron CWD7041
4 Two-Way RF Transceiver Module with Integral Antenna: CWD7041 Operations Guide - DOC. 7263A
Labeling Requirements
If the FCC identification number is not visible when the module is installed inside another device, then
the outside of the device into which the module is installed must also display a label referring to the
enclosed module. This exterior label can use wording such as the following: “Contains Transmitter
Module FCC ID: EROCWD7041” or “Contains FCC ID: EROCWD7041.” Any similar wording that
expresses the same meaning may be used.
Documentation
The OEM integrator has to be aware not to provide information to the end user regarding how to install
or remove this RF module in the users manual of the end product.
The users manual for OEM integrators must include the following information in a prominent location.
“IMPORTANT NOTE: To comply with FCC RF exposure compliance
requirements, the antenna used for this transmitter must be installed to provide a
separation distance of at least 20 cm from all persons and must not be co-located
or operating in conjunction with any other antenna or transmitter.”
Crestron CWD7041 Two-Way RF Transceiver Module with Integral Antenna
Operations Guide - DOC. 7263A Two-Way RF Transceiver Module with Integral Antenna: CWD7041 5
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Crestron Electronics, Inc. Operations Guide – DOC. 7263A
15 Volvo Drive Rockleigh, NJ 07647
Tel: 888.CRESTRON 06.11
Fax: 201.767.7576 Specifications subject to
www.crestron.com change without notice.