Crestron CWD6671 Manuale utente

Crestron CWD6671

Two-Way RF Transceiver Module

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

All brand names, product names and trademarks are the property of their respective owners.

Crestron CWD6671 Two-Way RF Transceiver Module

Contents

Two-Way RF Transceiver Module: CWD6671..............................................1

Introduction ...............................................................................................................................1

Functions and Features................................................................................................1

Specifications ..............................................................................................................2

Physical Description....................................................................................................2

Industry Compliance ...................................................................................................4

Setup..........................................................................................................................................7

Hardware Hookup .......................................................................................................7

End Product Labeling..................................................................................................8

Documentation ............................................................................................................8

Operations Guide - DOC. 6834 Contents •i

Crestron CWD6671 Two-Way RF Transceiver Module

Two-Way RF Transceiver Module:

CWD6671

Introduction Functions and Features

The CWD6671 (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

−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

nal

ualit

The transceiver uses a 3.8 milliwatt signal that can travel up to approximately 50 feet

indoors. The range is dependent on the construction of the building, obstructions, and

RF interference from other devices. The location of the module and the orientation of

its antenna are also important factors in determining RF performance.

Operations Guide - DOC. 6834 Two-Way RF Transceiver Module: CWD6671 •1

Two-Way RF Transceiver Module Crestron CWD6671

Specifications

The table below is a summary of specifications for the CWD6671.

Specifications of the CWD6671

SPECIFICATION DETAILS

Power Requirements 0.22 Watts (3.3VDC @ 0.67A)

Operating Frequency 2400 MHz to 2483.5 MHz (802.15.4 compliant)

Operating Ranges¹

Minimum Distance

Maximum Distance Indoors

(without repeater device)

3 ft

50 ft

Available Channels 16 (numbered 11 through 26 per 802.15.4)

RF Output Power 3.8 mW

Serial Communications SPI, 3.3V Nominal

Antenna Connector

SMA Reverse Polarity Female Connector

with ¼-36 UNS2B Screw

Dimensions Width: 1.35 in (3.43 cm)

Height: 2.4 in (6.10 cm)

Depth: 0.75 in (1.91 cm)

1. The location of the module and the orientation of the antenna 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. A SMA reverse polarity female antenna port is located at edge of the

circuit board for attaching a dipole antenna while a 16-pin header is for the

application-specific installation.

Physical View of CWD6671

2 •Two-Way RF Transceiver Module: CWD6671 Operations Guide - DOC. 6834

Crestron CWD6671 Two-Way RF Transceiver Module

CWD6671 Detail Views

1.90 in

(4.83 cm)

1.35 in

(3.43 cm)

PIN 2

PIN 1

PIN 16

PIN 15

Ports

The module contains a 16-pin header, a 10-pin debug header, and one antenna port.

Refer to the diagrams and descriptions that follow.

Power/I-O

The 16 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.

PIN 16

PIN 15 PIN 2

PIN 1

468101214

13 11 9753

Power/I-O Pinout Signals

Pin # Signal Pin # Signal

1 +5V (NU) 9 SSEL_INT

2 GND 10 GND

3 +5V (NU) 11 SCLK

4 WAKE 12 GND

5 +3.3V 13 MISO

6 Link Activity 14 MOSI

7 3.3V 15 GND

8 HOST_INT 16 RF_RESET_N

Operations Guide - DOC. 6834 Two-Way RF Transceiver Module: CWD6671 •3

Two-Way RF Transceiver Module Crestron CWD6671

Antenna

This SMA reverse polarity female antenna port is located at edge of the circuit board

for attaching the included dipole antenna.

APPROVED ANTENNAS:

The CWD6671 antenna interface has a unique coupling designed to ensure that no

antenna other than the one supplied shall be used with the device. Replacement

antennas may be purchased from Crestron according to the following description:

Part Number: 2001016

Description: ANTENNA, 2400.00MHZ, DIPOLE, SMA, REVERSE POLARITY,

FEMALE

Industry Compliance

Labeling Requirements

If the FCC ID on the CWD6671 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:

EROCWD6671” or “Contains FCC ID: EROCWD6671.” Any similar wording that

expresses the same meaning may be used.

Compliance Statement (Part 15.19 )

This device complies with Part 15 of the FCC Rules. Operation is subject to the

following two 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.

Warning (Part 15.21 )

Changes or modifications not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

RF Exposure (OET Bulletin 65 )

To comply with FCC RF exposure requirements for mobile transmitting devices, this

transmitter should only be used or installed at locations where there is at least 20cm

separation distance between the antenna and all persons.

Industry Canada Statement

The term "IC" before the certification/registration number only signifies that the

Industry Canada technical specifications were met.

IC: 5683C-CWD6671

Section 7.1.5 of RSS-GEN

Operation is subject to 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.

4 •Two-Way RF Transceiver Module: CWD6671 Operations Guide - DOC. 6834

Crestron CWD6671 Two-Way RF Transceiver Module

Antenna Requirements:

The module must be installed such that the antenna connector is accessible for direct

antenna connection in the final configuration. If any cable or antenna other than that

provided with the CWD6671 is used, then the FCC authorization is no longer

considered valid and the FCC ID cannot be used on the final product. In these

circumstances, the OEM integrator will be responsible for reevaluating the end

product (including the transmitter) and obtaining a separate FCC authorization.

Section 7.1.4 of RSS-GEN

This device has been designed to operate with the antenna(s) listed below, and

having a maximum gain of 2.5 dBi. Antennas not included in this list or having a

gain greater than 2.5 dBi are strictly prohibited for use with this device. The

required antenna impedance is 50 ohms.

Part Number Crestron # 2001016

Frequency 2.4-2.5 GHz

Type Dipole

Polarization Linear

Impedance 50 Ohm

Gain 2.0 +/- 0.5 dBi

VSWR 1.9:1

Section 7.1.5 of RSS-GEN

To reduce potential radio interference to other users, the antenna type and its gain

should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not

More than that permitted for successful communication.

Operations Guide - DOC. 6834 Two-Way RF Transceiver Module: CWD6671 •5

Two-Way RF Transceiver Module Crestron CWD6671

FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an

uncontrolled environment. This equipment should be installed and operated with

minimum distance 20cm between the radiator & your body. This transmitter must

not be co-located or operating in conjunction with any other antenna or transmitter.

This device is intended only for OEM integrators under the following

conditions:

1. The antenna must be installed such that 20 cm is maintained between the

antenna and users, and

2. The transmitter module may not be co-located with any other transmitter or

antenna.

As long as the two conditions above are met, further transmitter test will not be

required. However, the OEM integrator is still responsible for testing their end-

product for any additional compliance requirements required with this module

installed (for example, digital device emissions, PC peripheral requirements, etc.).

IMPORTANT NOTE: In the event that these conditions cannot be met (for

example certain laptop configurations or co-location with another transmitter), then

the FCC authorization is no longer considered valid and the FCC ID cannot be used

on the final product. In these circumstances, the OEM integrator will be responsible

for reevaluating the end product (including the transmitter) and obtaining a separate

FCC authorization.

6 •Two-Way RF Transceiver Module: CWD6671 Operations Guide - DOC. 6834

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