Crestron CWD7545
Two-Way RF Transceiver Module
Operations Guide
This document was prepared and written by the Technical Documentation department at:
Crest ron E lectronics, 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 inter ference received,
inclu ding int er ference that may caus e u ndesired operat ion.
CAUTION: Changes or modifications not expressly approved by the manufacturer responsible for compli ance
could void the user’s authority to oper at e 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 th e F CC Rul es. The se li mit s ar e des ign ed t o provi de r eas on abl e protect ion agains t harmfu l inter feren ce in a
resi dentia l instal lati on. Thi s equipm ent gen erates, u ses an d can radia te radi o frequ ency ener gy and if n ot insta lled
and used in accordan ce wit h the in struct ions, ma y cause h armful int erfer ence t o radio comm unic at ion s . Ho wev er ,
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
crease the separat ion between the equi pment and r eceiver
• In
• Connect the equipment in to an outl et on a circuit di ff erent from that to which the receiver i s con nected
• Consult the dealer or an experienced radio/TV technician for help
Industry Canada (IC) Compliance Statement
Operation is subject to the following two conditions:
1. This devi ce may not cause int erferen ce, and
2. This devi ce must accept an y in terferen ce, including int er ference tha t may ca use undesir ed operation of th e
device.
To sat i s f y RF exposure requirement s, th is device and its ant en na must operate with a separation di stance of at least
20 centimeters from all person s and must not be collocated or operating in conjunction with any other antenna or
transmitter.
Le fonctionnement est soumis
1. Cet appareil ne doit pas provoquer d'interférences et
2. Cet appareil doit accepter toute interférence, y compris les interférences pouvant entraîner un fonctionnement non
dispositif.
Pour satisfaire aux exigences d'exposition RF, ce dispositif et son antenne doivent fonctionner avec une distance de
séparation d'au moins À 20 centimètres de toutes les personnes et ne doit pas être collocée ou fonctionner en conjonction
avec une autre antenne ou émetteur.
aux deux conditions suivantes:
All brand names, product nam es and trademarks are the property of their respective owners.
©2010 Crestron Electronics, Inc.
Crestron CWD7545 Two-Way RF Transceiver Module
Contents
Two-Way RF Transceiver Module: CWD7545 ................................................1
Functions and Features ........................................................................................................................... 1
Specifications .................................................................................................... 2
Physical Descrip ti on ........................................................................................... 2
Setup............................................................................................................... 4
Labeling .......................................................................................................... 4
Documentation .................................................................................................. 4
Operations Guide - DOC. Contents • i
Crestron CWD7545 Two-Way RF Transceiver Module
Two-Way RF Transceiver Module:
CWD7545
Functions and Features
The CWD7545 (hereafter referred to as “module”) is a two-way radio frequency (RF) module that
Operations Guide - DOC. Two-Way RF Transceiver Module: CWD7545 • 1
utilizes the 2. 4 G Hz freq uency ban d to communi cate with other devices .
The mod u le operates according to th e IEE E 8 02.15.4 sp ecificat ion and can be con figured to minim ize
the possibility of interference with other devices.
The mod u le receives RF si g nals from one or more Crestron devices and can tr ansmit these signals over
the air for further processing (depending on the application).
Functional S umm ary
• 2.4 GHz frequency band, IEEE 802.15.4 specification
• Range from 3 feet to 1 00 ft.
• Operates on one of sixteen available channels to establish optimal
signal quality
Two-Way RF Transceiver Module Crestron CWD7545
SPECIFICATION
DETAILS
Power Requirements
1.55 Watts (5VDC @ 0.310A)
Operating Frequency
2400 MHz to 2483.5 MHz (802.15.4 compliant)
Operating Ranges¹
Minimum Distance
3 ft
Maximum Distance Indoors
100 ft
(without repeater device)
Avai lable Channels
16 (numbered 11 through 26 per 802.15.4)
Antenna
Mini Chip Antenna (2450AT42E0100)
Dimensions
Width: 1.88 in (0.477 cm)
Height: 0.82 in (0.208 cm)
Depth: 0.100 in (0.254 cm)
Specifications
The tabl e bel ow is a sum mary of specifications for the CWD7545.
Specifications of the CWD7545
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 ran ge. 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 t he effective range of the u nit. To prevent unit-to-unit RF interference, multiple modules operating
at the sa m e fr e qu e ncies s hou ld not b e instal le d w ithin 3 -5 feet of ea c h other.
Physical Description
The modu le, shown be low, c onsists of var ious c omponents atta ched t o a prin ted ci rcu i t board.
Phys ical Vie w of CWD7545
2 • Two-Way RF Transceiver Module: CWD7545 Operatio ns Guid e - DOC.
Crestron CWD7545 Two-Way RF Transceiver Module
Pin # Signal
Pin # Signal
Pin #
Signal
Pin #
Signal
1
+5v
9
Reserved
24
RESET
32
MISO
GPIO
2
GND
10
Reserved
25
Reserved
33
CONFIG1
GPIO
ADC1
3
GPIO
11
GND
26
Reserved
34
CONFIG2
PWMA
ADC2
4
GPIO
12-16
Reserved
27
Reserved
35
Reserved
PWMB
ADC3
GPIO 5
Reserved
17-20
GND
28
GND
36
GND
GPIO
6
Reserved
21
UART RX
29
Reserved
62
GND
GPIO
GPIO
7
Reserved
22
UART TX
30
SCLK
63
+5v
GPIO
8
Reserved
23
Reserved
31
MOSI
GPIO
GPIO
CWD7545 Detail Views
Power/I-O
An edge connector provides p o wer to th e modu le as well a s serial communication s between th e
module and wired devices. Refer to the followin g table for pin assignments of th e module interface
connector.
Power/I-O Pinout Signals
Operations Guide - DOC. Two-Way RF Transceiver Module: CWD7545 • 3
Two-Way RF Transceiver Module Crestron CWD7545
Setup
Hardware Hookup
Refer t o the / I-O Pinout Signals table which shows the connections made to the module.
NOTE: To pr eve nt unit -to-unit RF int er ference, multiple modules operating at the same frequ en cies
shoul d not be installed with in th ree to five fe et of each other.
Labeling
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: E ROCWD7545” or “Cont a ins FCC ID: EROCWD7545. ” Any similar wordin g that
expr ess es the same meanin g ma y be used.
Documentation
The OEM in tegr a tor has to be aware not to pr ovide information to th e e nd us er rega rdi ng how to in s t all
or remove this RF module in the user’s manual of the end product.
The user’s 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 tran smitter must be in stalled to provide a
separation distance of at least 20 cm from all per sons and must not be co-located
or operating in conjunction with any other antenna or transmitter.”
4 • Two-Way RF Transceiver Module: CWD7545 Operatio ns Guid e - DOC.
Crestron CWD7545 Two-Way RF Transceiver Module
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Operations Guide - DOC. Two-Way RF Transceiver Module: CWD7545 • 5
Crestron Electronics, Inc.
Operations Guide – DOC.
15 Volvo Drive Rockleigh, NJ 07647
04.10
Tel: 888.CRESTRON
Fax: 201.767.7576
Specifications subject to
www.crestron.com
change without notice.
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