CL4490 Hardware Integration Guide

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CL4490
HARDWARE INTEGRATION GUIDE
VERSION 1.0
wireless.support@lairdtech.com
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FCC Notice
Laird Technologwes
CL4490 Hardware Integration Guide
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WARNING: 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.
RF Exposure/Installation Instructions
WARNING: To satisfy FCC RF exposure requirements for mobile transmitting devices, this
equipment must be professionally installed such that the end user is prevented from
replacing the antenna with a non-approved antenna. The end user should also be prevented
from being within 20cm of the antenna during normal use with the exception of hands,
feet, wrists and ankles.
The preceding statement must be included as a CAUTION statement in manuals for OEM
products to alert users on FCC RF Exposure compliance.
Caution: Any change or modification not expressly approved by Laird could void the user’s authority to
operate the equipment.
Laird Technologwes
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REVISION HISTORY
Date
Changes
Approved By
1.0
11 Dec 2013
Separated from User Guide. Initial
Release
Chris Downey
Laird Technologwes
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CONTENTS
CL4490 RF Transceiver ................................................................................................................................. 5
Overview .................................................................................................................................................... 5
Features ..................................................................................................................................................... 6
Detailed Specifications ............................................................................................................................... 6
Serial Interface ............................................................................................................................................. 8
CL4490 Serial Interface .............................................................................................................................. 8
CL4490-PRO Serial Interface ..................................................................................................................... 12
Hardware Flow Control ............................................................................................................................ 14
Hardware .................................................................................................................................................... 16
Mechanical Drawing ................................................................................................................................ 16
Approved Antenna List ............................................................................................................................. 17
Related Documents and Files .................................................................................................................... 18
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CL4490 RF TRANSCEIVER
The CL4490 transceiver is a Frequency Hopping Spread Spectrum (FHSS) radio designed for license-free
operation in the 900 MHz Industrial, Scientific, and Medical (ISM) unlicensed band. The radio sustains a
standard asynchronous serial data stream between two or more radios out of the box. Housed in a compact
and rugged die-cast enclosure, the radio is equipped to replace miles of serial cable using a CL4490 RS232,
RS485, or USB interface.
This guide is for the CL4490 and CL4490-PRO. References to the CL4490 apply to the CL4490-PRO, unless
otherwise specified.
Overview
The CL4490 uses Frequency Hopping Spread Spectrum technology, where the units "hop" from frequency to
frequency many times per second using a specific hop pattern applied to all the transceivers in the same
network. A distinct hopping pattern is provided for each channel number, thereby allowing multiple
networks to coexist in the same area with limited interference.
CL4490 transceivers operate in a Point-to-Point or Point-to-Multipoint, client-server architecture. One
transceiver is configured as a server and there can be one or many clients. To establish communication
between transceivers, the server emits a beacon and upon detecting a beacon, a Radio Frequency (RF) link is
established with the client(s).
CL4490s implement a proprietary communication protocol to provide secure data transmissions. Using FHSS
technology ensures data reliability over long distances. The license-free frequency bands ensure that the units
are ready for use with no further certification requirements.
Each unit is small and easily portable for use in mobile and temporary settings as well as fixed installations.
The CL4490 configuration software enables custom configurations based on unique application
requirements.
This document contains information about the hardware and software interface between a Laird CL4490
transceiver and an OEM host. Information includes the theory of operation, specifications, serial interface
definition, security information and mechanical drawings. The OEM is responsible for ensuring before the
final product is sold that it meets all appropriate regulatory agency requirements listed herein.
Additionally, this document contains a list of Related Documents and Files.
Note: CL4490 modules are referred to as the “radio” or “transceiver”. Individual naming is used to
differentiate product-specific features. The host (PC, Microcontroller, or any device connected to
the CL4490) is referred to as “OEM host”.
Conducted (no antenna) EIRP (3dBi gain antenna) 6 Laird Technologwes
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Features
Networking and Security
Retries and Acknowledgements
API Commands to control packet routing and
acknowledgement on a packet-by-packet basis
Frequency Hopping Spread Spectrum for security
and interference rejection
Customizable RF Channel number and System ID
Dynamic link analysis, remote radio discovery
Low latency and high throughput
Easy to Use
Continuous 76.8kbps RF data stream
Software selectable interface baud rates from
1200bps to 115.2kbps
Advanced configuration available using AT
commands
Detailed Specifications
Table 1: CL4490 Specifications
INTERFACE
Serial Interface Connector
CL4490: DB-9 Male (RS232), Terminal Block (RS485), Type B USB (USB)
CL4490-PRO: DB-9 Female
RF Connector
50 Ohm RPSMA Connector
Serial Interface Data Rate
Baud rates from 1200 bps to 115.2 Kbps
Power Consumption
400 mA @ 12 VDC
Channels
CL4490-200: 56 channels on 3 channel sets
CL4490-1000: 40 channels on 2 channel sets
Supported Network Topologies
Point-to-Point, Point-to-Multipoint
Security
One byte System ID. 56-bit DES encryption key
Interface Buffer Size
CL4490: Input/Output: 256 bytes each
CL4490-PRO: Input/Output: 1600 bytes each
OPERATIONAL
Frequency Band
902 928 MHz (US/Canada)
915 928 MHz (Australia, US/Canada)
RF Data Rate
76.8 Kbps fixed
Host Data Throughput
32 Kbps maximum
RF Technology
Frequency Hopping Spread Spectrum (FHSS)
EEPROM write cycles
20000
Hop period
20 ms
Output Power
Conducted (no antenna)
EIRP (3dBi gain antenna)
CL4490-200
100 mW typical
200 mW typical
CL4490-1000/PRO
743 mW typical
1486 mW typical
Supply Voltage
CL4490-200: USB Supplied 5V/500 mA
CL4490-1000: 7-18 VDC 400 mA
PRO: 7-28 VDC 400 mA
Receiver Sensitivity
-100dBm typical @ 76.8 Kbps RF Data Rate
Range, Line of Sight (based on
3dBi gain antenna)
CL4490-200: Up to 4 miles
CL4490-1000/PRO: Up to 20 miles
|__ F 7 Laird Technologwes
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POWER SETTINGS (Input Voltage: 12 v DC)
Transmit Full Duty Cycle
Max Power Setting
Current (mA)
dBm
mW
Low
157
10
10
Quarter
225
23
200
Half
280
26
400
Full
365
28
743
Receive Transceiver in Idle
Max Power Setting
Current (mA)
Low
50
Quarter
50
Half
50
Full
50
ENVIRONMENTAL
Temperature (Operational)
-40° C to 80° C
Temperature (Storage)
-50° C to +85° C
Humidity (Non-Condensing)
10% to 90%
PHYSICAL
Dimensions
4.4 x 2.7 x 1.4 inches
Weight
6 oz. (170 g)
CERTIFICATIONS
FCC Part 15.247
CL4490-200: KQLAC4490-100
CL4490-1000/PRO: KQLAC4490
Industry Canada (IC)
CL4490-200: 2268C-AC4490
CL4490-1000/PRO: 2268C-AC44901000
Caution! ESD Sensitive Component. You must use proper ESD precautions when
handling this device to prevent permanent damage.
External ESD protection is required to protect this device from damage as required
to pass IEC 61000-4-2 or ISO 10605 based on end system application.
CL4490 Senal Interface CL44907PRO Senal Interface Hardware How Control R5232 RS485 (erwre) RS485 (4*ere) and RS422 DES Male Connector , Power Connector 8 Laird Technologwes
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SERIAL INTERFACE
This section details the CL4490’s serial interface properties and th
CL4490 Serial Interface
CL4490-PRO Serial Interface
Hardware Flow Control
The CL4490 supports the following protocols, which are separate products:
RS232
RS485
USB
The CL4490-PRO supports the following protocols in one product:
RS232
RS485 (2-wire)
RS485 (4-Wire) and RS422
Laird wireless solutions are not subject to the cabling restrictions for distance. All interfaces are available
when ordering.
CL4490 Serial Interface
RS232
Figure 1: CL4490-RS232
RS232 is a single-ended data transmission protocol. The RS232 signals are represented by voltage levels with
respect to a system common (power/logic ground). The “idle” state (MARK) has the signal level negative with
respect to common, and the “active” state (SPACE) has the signal level positive with respect to common.
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Table 2: CL4490 DB9 Male Connector Pinout (as defined in CL4490)
Interfacing to Other RS232 Equipment
The CL4490 is a DCE (Data Communications Equipment) device. Typically, devices like PCs are considered
DTE (Data Terminal Equipment) devices. Peripheral devices are classified as DCE. A DCE device can interface
to a DTE device using a straight-through serial cable. When interfacing two DCE (or two DTE) devices
together, a null modem (or crossover) cable is required to swap pins and convert the signals accordingly.
Figure 2: DTE to DCE interface (signals with
respect to DTE)
Figure 3: DCE to DCE interface (signals with
respect to DTE)
Note: When using a pair of CL4490s to connect a PC to a peripheral unit, if you previously used a
straight-through serial cable to connect your PC to your peripheral device, you’ll need to use a
straight-through serial cable between the PC and the CL4490 and a null modem adapter, or cross-
over cable, between the other CL4490 and the peripheral device.
DB9 Pin
Signal Name
Description
Direction
1
DCD
Data Carrier Detect
Out
2
TXD (RXD with respect to DTE)
Transmit Data
Data Out to Host
3
RXD (TXD with respect to DTE)
Receive Data
Data In to CL4490
4
DTR
Data Terminal Ready
In
5
GND
Ground
-
6
DSR
Data Set Ready
Out
7
RTS
Request to Send
In
8
CTS
Clear to Send
Out
9
RI
Ring Indicator
Out
Terminal Block Power Connector , , " DDEIEEI @ flflflflflfl (144904000485 , remnar Brock , Power conneuor RSQ32—485 Converter 10 Laird Technologres
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RS485
Figure 4: CL4490-RS485
The RS485 interface uses a Differential Data Transmission that can help nullify the effects of ground shifts
and induced noise signals that can appear as common mode voltages on a network.
The CL4490 uses a RS485 (2-wire Half Duplex) multi-drop interface. Typically, a RS485 bus consists of a
master and several slaves. The nodes have unique addresses and can send addressed packets to specific
nodes. Because the bus is half duplex, no two nodes should try to talk at the same time. The CL4490 does
not have an RS485 address; it transmits all RS485 traffic over the RF. Conversely, as soon as the CL4490
receives a packet over the RF, it transmits the packet over the RS485 bus.
Table 3: CL4490 Terminal Block Pinout
Terminal Block Pin
Signal Name
Description
1
VCC
6-18V (1.3A required)
2
485 -
485B
3
N/C
No Connect
4
N/C
No Connect
5
485 +
485A
6
GND
Ground
Note: When using RS485 (2-wire Half Duplex), a RS485 to RS232 converter is required to configure the
unit. Laird recommends a B&B Electronics 4WSD9R converter to translate RS485 to RS232.
Figure 5: RS232-485 Converter
USB Type B connector BUS USB Drivers M Laird Technologwes
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Note: Many simple 2- or 4-wire converters do not provide hardware flow control capabilities and
therefore require you to disable handshaking (Handshaking: None) in the Laird Configuration
Utility to configure the radio. Check with your converter manufacturer for any specific
requirements.
USB
Figure 6: CL4490 USB
The USB bus (of a master device, see USB Device Type for more information) supplies 5 V DC regulated
power (maximum 500 mA) through each port on pins 1 and 4. Low power devices that might normally
require a separate AC adapter can therefore be powered via the USB cable, eliminating the need for AC
adaptors. The CL4490-USB draws its power directly from the USB bus and requires no external power supply.
Table 4: CL4490-USB Type B Point
TERMINAL BLOCK PIN
SIGNAL NAME
DESCRIPTION
CABLE COLOR
1
V
BUS
4.75 5.25 V
Red
2
D -
Transmit/Receive Data
White
3
D +
Transmit/Receive Data
Green
4
GND
Ground
Black
USB Device Type
There are two types of USB devices; masters and slaves. A USB master device is a host device (such as a PC)
that supplies the USB drivers. A USB slave device (peripheral devices such as a keyboard, mouse, etc.)
connects to a USB master device and uses the USB driver supplied by the host.
When a USB slave device connects to the host, the host prompts the device for the appropriate USB driver.
Once the driver is located, the host loads and retains it for all subsequent connections of the slave device.
Note: The CL4490 is a USB slave device (peripheral) and cannot connect to another USB slave device.
USB Driver
The CL4490 is a stand-alone RF module that interfaces to a USB port on the host device. It uses a Virtual
COM Port (VCP) driver that causes the device to appear as an additional COM port on a PC. Application
software can then access the USB device in the same manner it would access a standard COM port.
The CL4490-USB is a plug-and-play device that the PC automatically detects upon connection. Once
detected, the PC starts the
Add New Hardware
wizard and installs the USB driver.
Note: The Laird USB driver installs with the Configuration Utility. You may also install it manually:
1. Connect the CL4490-USB device to the PC using a USB cable.
2. Download WirelessSerialDeviceDriverInstall.zip from the USB Drivers link and unzip to local PC.
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3. Run Preinstaller.exe.
4. If a Windows logo testing dialog appears, click Continue anyway.
Select Finish and reboot if prompted.
CL4490-PRO Serial Interface
DIP Switches
The CL4490-PRO DIP switches are located next to the Status LEDs and configure the serial interface and
mode of the radio. The Figure 7 diagram also appears on the bottom of the metal casing of the CL4490-PRO
for reference when configuring the radios.
Figure 7: CL4490-PRO DIP Switch Settings
Note: The TX/RX Mode DIP switch settings override properties set with the Laird Configuration Utility.
RS232
RS232 is a single-ended data transmission protocol. The RS232 signals are represented by voltage levels with
respect to a system common (power/logic ground). The
idle
state (MARK) has the signal level negative with
respect to common, and the “active” state (SPACE) has the signal level positive with respect to common.
Figure 8: RS232 DIP Switch Settings (Only use Forced 9600 Mode to recover the radio when the state is unknown)
059 female connector Interfacing to Other R5232 Eguigment WM! WM! I23 12 With Termination 1 Without Termination nu i3 Laird Technologies
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Table 5: CL4490-PRO RS232 Pinout (as defined in the CL4490-PRO)
DB9 Pin
Signal Name
I/O
Description
Details
1
DCD
O
Data Carrier Detect
Carrier Detect Signal. Connects
to DSR (pin 6).
2
TXD (RXD with
respect to DTE)
O
Transmitted Data
Serial Data (modem to host).
3
RXD (TXD with
respect to DTE)
I
Received Data
Serial Data (host to modem).
4
DTR
I
Data Terminal Ready
Determines if modem is ready
for operation.
5
GND
-
Ground
Ground
6
DSR
O
Data Set Ready
Connects to DCD (pin 1).
7
RTS
I
Request To Send
Provides RTS Flow Control.
8
CTS
O
Clear To Send
Provides CTS Flow Control.
9
NC
-
No Connect
No connect.
Note: Refer to Interfacing to Other RS232 Equipment for more information.
RS485 (2-wire)
The RS485 interface uses a Differential Data Transmission that helps nullify the effects of ground shifts and
induced noise signals that can appear as common mode voltages on a network.
The CL4490-PRO implements a RS485 (2-wire Half Duplex) multi-drop interface. Typically, a RS485 bus
consists of a master and several slaves. The nodes have unique addresses and can send addressed packets to
specific nodes. Because the bus is half duplex, no two nodes should try to talk at the same time. The CL4490-
PRO does not have an RS485 address; therefore, it transmits all RS485 traffic over the RF. Conversely, as soon
as a CL4490-PRO receives a packet over the RF, it transmits the packet over the RS485 bus.
Figure 9: RS485 Half Duplex and Termination DIP Switch Settings
Table 6: CL4490-PRO RS485 Pinout
DB9 Pin
Signal Name
Description
1
-
No Connect
2
TR-
Serial Data transmitted to & received from radio
3
-
No Connect
4
-
No Connect
5
GND
Ground
6
-
No Connect
7
-
No Connect
8
TR+
Serial Data transmitted to and received from radio
9
Power
Optional Power Input1
1.
An internal jumper must be configured in order to use power over Pin 9.
DB9 female
connector
DB9 female
connector
n ON ON Tflflflm THHHHI! i234 i234 1 Without Termination With Termination i4 Laird Technologies
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RS485 (4-Wire) and RS422
1.
Termination is a 120 ohm resistor.
Figure 10: RS485 Full Duplex and Termination DIP Switch Settings
Table 7: CL4490-PRO RS422 Pinout
DB9 Pin
Signal Name
Description
1
-
No Connect
2
T-
Serial Data transmitted to radio
3
R-
Serial Data received by radio
4
-
No Connect
5
GND
Ground
6
-
No Connect
7
R+
Serial Data received by radio
8
T+
Serial Data transmitted to radio
9
Power
Optional Power Input1
1.
An internal jumper must be configured in order to use power over Pin 9.
Hardware Flow Control
Flow control refers to the control of data flow between the host and the CL4490. It is the method used to
handle data in the transmit/receive buffer of the CL4490 interface and it determines how data flow between
the host and the CL4490 throttles. Often in serial communication, one device is capable of sending data
much faster than the other can receive. Flow control allows the slower device to tell the faster device to
pause and resume data transmission. Because flow control signals CTS and RTS are used by the CL4490 and
its host
locally
(rather than over the air), one CL4490 cannot tell the other CL4490 to slow down or speed up.
The CL4490 sets the Clear to Send (CTS) line logic Low when it is able to accept data over the serial interface
from the host, and alternately sets the CTS line logic High to signal that it is not ready to accept additional
data from the host. By default the CTS signal on the CL4490 is always operational. When the
RTS Enable
option is selected through the Configuration Utility, the CL4490 checks the state of Ready to Send (RTS)
before sending data over the serial interface to the host. If RTS is logic Low, the CL4490 sends data over the
serial interface to its host. If RTS is logic High, it does not send data to its host. These signals send apart from
the data itself on separate wires.
Note: CTS is always enabled by default. RS485 Interface does not support Hardware flow control.
RTS is high by default on the CL4490. If RTS Enable is enabled, the CL4490 will not transmit data
out the serial interface unless the RTS line is driven low by the OEM host.
DB9 female
connector
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Laird Technologies
TIP
Can I implement a design using just Txd, Rxd and Gnd (Three-wire Interface)?
Yes. However, Laird strongly recommends that your hardware monitor the CTS pin of the
radio. CTS transitions logic High by the radio when its interface buffer is getting full. Your
hardware should stop sending data over the serial interface at this point to avoid a buffer
overrun (and subsequent loss of data).
You can perform a successful design without monitoring CTS. However, you need to take
into account the amount of latency the radio adds to the system, any additional latency
caused by Transmit Retries or Broadcast Attempts, how often you send data, non-delivery
network timeouts, and interface data rate. Polled type networks, where a centralized host
requests data from the surrounding hosts and the surrounding hosts respond, are good
candidates for avoiding the use of CTS. This is because no one transceiver can monopolize
the RF link. Asynchronous type networks, where any radio can send to another radio at any
point in time, are much more difficult to implement without the use of CTS.
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HARDWARE
Mechanical Drawing
Note: Overall dimensions apply to both the CL4490 and CL4490-PRO.
Figure 11: CL4490 Mechanical
17 Laird Technologwes
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Approved Antenna List
Table 8: CL4490 approved antennas
Laird Part
Number
Manufacturer Part
Number
Manufacturer
Type
Gain
(dBI)
CL4490-
200
CL4490-
1000/PRO
0600-00019
S467FL-5-RMM-915S
Nearson
1/2 Wave Dipole
2
X
X
0600-00025
S467FL-5-RMM-915
Nearson
1/2 Wave Dipole
2
X
X
0600-00024
S467AH-915
Nearson
1/2 Wave Dipole
2
X
X
0600-00027
S467AH-915R
Nearson
1/2 Wave Dipole
2
X
X
0600-00028
S161AH-915R
Nearson
1/2 Wave Dipole
2.5
X
X
0600-00029
S161AH-915
Nearson
1/2 Wave Dipole
2.5
X
X
0600-00030
S331AH-915
Nearson
1/4 Wave Dipole
1
X
X
-
1020B5812-04 Flavus
gigaAnt
Microstrip
-0.5
-
-
-
Y22831
Comtelco
Yagi
6dBd
X
X
-
Y2283A-915-10RP
Comtelco
Yagi
6dBd
X
X
-
SG101N9152
Nearson
Omni
5
X
X
-
SG101NT-915
Nearson
Omni
5
X
X
-
GM113
V.Torch
Omni
3.5
X
-
-
PC8910NRTN
Laird
Yagi
11dBd
-
-
-
ANT-DB1-RMS
Ant. Factor
Monopole
3
X
-
1.
Strictly requires professional installation.
Note: You may use different antenna manufacturers as long as the antenna is of like type and equal or
lesser gain to one of the antennas in the table above.
Connemek Product Brief CL4490 User GUIde Statement of Comphance to EU WEEE Directwe and RoHS Dvedwve ConnemekW Product Lme Laud Conflguramon Umlnz USE Duvers 18 Laird Technologwes
CL4490 Hardware Integration Guide
Version 1.0
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/ramp
18
Laird Technologies
RELATED DOCUMENTS AND FILES
The following additional CL4490 technical documents are also available from the RAMP page under the
Product Information tab in the row labelled ConnexLink - Wireless Cable Replacement System:
ConnexLink Product Brief
CL4490 User GUide
Statement of Compliance to EU WEEE Directive and RoHS Directive
ConnexLinkProduct Line
The following downloads are also available from the RAMP Product Information tab:
Laird Configuration Utility
USB Drivers