Crestron CWD6590
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 cond itions:
(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 ot 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.
©2009 Crestron Electronics, Inc.
November 2009
Crestron CWD6590 Two-Way RF Transceiver Module w/Antenna
Contents
Two-Way RF Transceiver Module: CWD6590..............................................1
Functions and Features..............................................................................................................1
Specifications.............................................................................................................................2
Physical Description..................................................................................................................2
Labeling Requirements..............................................................................................................4
Documentation...........................................................................................................................4
Operations Guide - DOC. 6859A Contents • i
Crestron CWD6590 Two-Way RF Transceiver Module w/Antenna
Two-Way RF Transceiver Module:
CWD6590
Functions and Features
The CWD6590 (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 (dependin g on the application).
Functional Summary
• 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
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Two-Way RF Transceiver Module w/Antenna Crestron CWD6590
Specifications
The table below is a summary of specifications for the CWD6590.
Specifications of the CWD6590
SPECIFICATION DETAILS
Power Requirements 0.22 Watts (3.3VDC @ 0.067A)
Operating Frequency 2400 MHz to 2483.5 MHz (802.15.4 compliant)
Operating Ranges¹
Minimum Distance
Maximum Distance Indoors
(without repeater device)
Available Channels 16 (numbered 11 through 26 per 802.15.4)
RF Output Power 2.9 mW
Serial Communications SPI, 3.3V Nominal
Dimensions Width: 1.25 in (3.18 cm)
1.
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.
3 ft
50 ft
Height: 1.90 in (4.83 cm)
Depth: 0.50 in (1.27 cm)
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 CWD6590
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Crestron CWD6590 Two-Way RF Transceiver Module w/Antenna
CWD6590 Detail Views
1.90 in
(4.83 cm)
1.25 in
(3.18 cm)
Ports
The module contains a 25-pin header and a 10-pin debug header. Refer to the diagrams and
descriptions that follow.
Power/I-O
The 25 pin header provides power to the module as well as serial communications between the module
and wired devices. Refer to the following table for pin assignments of the module interface connector.
2523 21 19 17 15 13 11 9 7 5 3 1
Power/I-O Pinout Signals
24681012141618202224
Pin # Signal Pin # Signal Pin # Signal
1
2
3
4
5
6
7
8
9 GP6 18 GROUND
SPI CLK 10 GROUND 19 GP16
SPI MISO 11 GP7 20 GROUND
GP12 12 GROUND 21 GP15
SPI MOSI 13 GP8 22 +3.3V
GP4 14 GROUND 23 GP14
GP11 15 GP9 24 +3.3V
GP5 16 GROUND 25 GP13
GROUND 17 GP10
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Two-Way RF Transceiver Module w/Antenna Crestron CWD6590
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 th e following: “Contains Transmitter
Module FCC ID: EROCWD6590” or “Contains FCC ID: EROCWD6590.” 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 provid e 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.”
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Crestron CWD6590 Two-Way RF Transceiver Module w/Antenna
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