CL4790-1000-232 Laird Technologies, CL4790-1000-232 Datasheet

TXRX 900MHZ RS232 1W W/ANT DB9

CL4790-1000-232

Manufacturer Part Number
CL4790-1000-232
Description
TXRX 900MHZ RS232 1W W/ANT DB9
Manufacturer
Laird Technologies
Series
AeroCommr
Datasheets

Specifications of CL4790-1000-232

Function
Transceiver
Modulation Or Protocol
FHSS, FSK
Frequency
902MHz ~ 928MHz
Applications
General Purpose
Interface
RS-232
Sensitivity
-99dBm
Power - Output
1000mW
Data Rate - Maximum
115.2kbps
Voltage - Supply
7 V ~ 18 V
Package / Case
Module
Wireless Frequency
900 MHz
Interface Type
RS-232, RS-485
Board Size
121 mm x 70 mm x 30 mm
Modulation
FHSS, FSK
Security
1 byte System ID, DES
Operating Voltage
100 V to 120 V
Output Power
1000 mW
Antenna
Dipole
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
CL4790
Industrial 900MHz ConnexLink
User’s Manual
Version 1.0
11160 THOMPSON AVENUE
LENEXA, KS 66215
(800) 492-2320
www.aerocomm.com
sales@aerocomm.com

Related parts for CL4790-1000-232

CL4790-1000-232 Summary of contents

Page 1

... CL4790 Industrial 900MHz ConnexLink User’s Manual Version 1.0 11160 THOMPSON AVENUE LENEXA, KS 66215 (800) 492-2320 www.aerocomm.com sales@aerocomm.com ...

Page 2

Document Information Copyright Copyright © 2004 A The information contained in this manual and the accompanying Information software programs are copyrighted and all rights are reserved Inc. A ERO OMM periodic modifications of this product without ...

Page 3

FCC Information FCC Notice 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, ...

Page 4

... Figure 3- RS-485 CL4790 Back View ............................................................................ 8 Figure 4- CL4790 Mechanical Diagram......................................................................... 9 Figure 5- RS-232 Male/Female Connector Pin out ................................................... 11 Figure 6- DCE to DTE Interface.................................................................................... 11 Figure 7- DCE to DCE Interface ................................................................................... 12 Figure 8- Point-to-Point Network.................................................................................. 14 Figure 9- Multiple Networks of Point-to-Multipoint CL4790s ................................... 14 Tables Table 1 – DTE, DCE and Null Modem Signal Definitions......................................... 10 6/24/2005 ........................................................................................... 1 ....................................................................................... 6 ...

Page 5

... A distinct hopping pattern is provided for each Channel Number, thereby allowing multiple networks to co-exist in the same area without interference. CL4790 transceivers operate in a Masterless architecture. The unique feature of this architecture is its dynamic Session extension and Collision Avoidance mechanism, which uses a proprietary scoring system to promote contention free communication and ensure that each node has fair access to the network ...

Page 6

... CL4790 User’s Manual 1.2 CL4790 Specification Specifications CL4790 - 1000 TRANSCEIVER PERFORMANCE Output power 1000mW Transmission range Up to 1500 feet (450m) indoors miles (32 km) line-of-sight Data rate Up to 115.2 Kbps RF Data Rate 76.8kbps fixed Receiver Sensitivity -100dBm typical @ 76.8kbps RF Data Rate ...

Page 7

... RS-232 cables are suitable for distances less than 100 feet (30.5m). AeroComm wireless solutions are not subject to the cabling restrictions for distance, but either interface (RS-232 or RS-485) is available when ordering the CL4790s. Figure 1- RS-232/RS-485 CL4790 Front View Pwr Link Rx ...

Page 8

... RS-232 Pin Assignments Figure 2- RS-232 CL4790 Back View RS-485 (2-wire Half Duplex) Terminal Block Pin Assignments Figure 3- RS-485 CL4790 Back View Terminal Block 1 6 Note: Standard power is applied through the power connector. Alternative power is available via the terminal block pins. 6/24/2005 ...

Page 9

... Pin Male D-Connector Power Jack w/ 0.100 dia. pin and 0.250 opening, pin is PWR. 0.375 0.000 6/24/2005 Figure 4- CL4790 Mechanical Diagram Side View Label Recess, 3.5w x 2.0h Top View Note: All dimension in inches unless noted Antenna Connector SMA Jack, Reverse Polarity ...

Page 10

... CL4790 User’s Manual 2. Interfacing Protocol The CL4790 is a DCE (Data Communications Equipment). A DCE can be interfaced to a DTE using a straight through serial cable (the serial cable provided with the CL4790 is a straight through cable). Typically, PC’s are defined as a DTE and peripherals are defined as DCE. To interface a DCE with another DCE DTE with another DTE, a null modem (or a Crossover) cable is required ...

Page 11

... CL4790 User’s Manual 2.1 RS-232 RS-232 is a single ended data transmission protocol. The RS-232 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 ...

Page 12

... The nodes will 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 CL4790 does not have a RS-485 address, therefore, it will transmit all RS-485 traffic over the RF. Conversely, as soon as a CL4790 receives a packet over the RF, it will transmit the packet over the RS-485 bus ...

Page 13

... Flow control allows the slower device to tell the faster device to pause and resume data transmission. (Flow control CTS and RTS are used by the CL4790 and its Host, locally – NOT over the air. Therefore, one CL4790 cannot tell the other to slow down or speed mentioned above in the paragraph.) When the RTS Enable option is selected on the Configuration Utility, the transceivers use hardware flow control to regulate data flow ...

Page 14

... Point-to-Multipoint systems have one base station, or access point, that controls communications with all of the other wireless nodes in the network. This allows for the creation of a wireless network consisting of multiple nodes. By programming each CL4790 with a network specific Channel Number and System ID multiple networks can be created see (Fig 9). ...

Page 15

... When finished, a window will be displayed indicating a successful installation. Select OK. 4.2 CL4790/CN4790 Settings The configuration utility can be used to configure both CL4790 and CN4790. The configuration utility defaults to CL4790 configuration when it is loaded; it can be used to configure the CN4790 by checking the CN4790 check box on the configuration page. 6/24/2005 15 ...

Page 16

... CL4790 User’s Manual 4.2.1 CL4790 Settings The CL4790 Settings Page is shown below will appear the first time the program is run. 4.2.1.1 ConnexLink Settings Interface Baud Rate: This defines the baud rate used for communicating with the CL4790 over the serial interface. The RF baud rate is fixed at 76.8 Kbps and is independent of the Interface Baud Rate ...

Page 17

... Max Transmit Retries: This value represents the maximum number of times a particular data packet will be transmitted unsuccessfully, or without an acknowledgement, before the CL4790 discards the packet. The default value is 4 attempts. If communication is lost and the Link LED is on, try increasing this value in small increments until communication is reestablished ...

Page 18

... CL4790 User’s Manual 4.2.1.3 Optional Settings Data Encryption: Enables the Data Encryption Key. All CL4790s in the same network must have the same encryption setting. RTS Enable: Enables the Request To Send control line. When enabled, enables Hardware Flow Control. Refer to Section 2.3 Hardware Flow Control. ...

Page 19

... CL4790 User’s Manual Consider the example of a remote temperature monitoring system where temperature readings are obtained from sensors attached to the transceivers at remote locations. This application may require polling each and every transceiver individually and obtaining the temperature reading. When the Transmit API is enabled the packets are dynamically routed with out requiring any configuration i ...

Page 20

... API packet is received. Note: The API Mode over writes all the RF Delivery settings. 4.2.1.5 PC Settings Port: Serial communications port of the PC connected to the CL4790 unit. Baud Rate: Must equal the Interface Baud Rate setting of the CL4790 unit that is about to be programmed. 6/24/2005 Receive ...

Page 21

... Select Read Radio to display the current settings of the CL4790 unit. 7. Change desired settings. 8. After all changes have been made, select Write Radio to save the changes. 9. Cycle Power to the unit after all changes has been saved. This will set the CL4790 unit to its normal mode of operation. 6/24/2005 ...

Page 22

... CL4790 User’s Manual 4.2.2 CN4790 Settings The CN4790 Settings Page is shown below will appear the first time the CN4790 check box is checked. 4.2.2.1 ConnexLink Settings Random Back Off: Random BackOff determines the random amount of time a transceiver waits when a collision occurs before resending the packet again. The amount of randomness is controlled by this parameter ...

Page 23

... CL4790 User’s Manual Broadcast Attempts: This value represents the number of times a data packet will be transmitted by the CN4790 when in Broadcast mode. The default value is 4 attempts. If communication is lost and the receiving radio’s Link LED is on, try increasing this value in small increments until communication is reestablished. ...

Page 24

... CL4790 User’s Manual 4.2.2.3 Optional Settings Data Encryption: Enables the Data Encryption Key. All CN4790s in the same network must have the same encryption setting. Parity: Needs to be enabled if host requires even or odd parity and 8 data bits. This is considered as 9-bit mode. Note: Enabling Parity cuts the overall throughput into half. ...

Page 25

... CL4790 User’s Manual Consider the example of a remote temperature monitoring system where temperature readings are obtained from sensors attached to the transceivers at remote locations. This application may require polling each and every transceiver individually and obtaining the temperature reading. When the Transmit API is enabled the packets are dynamically routed with out requiring any configuration i ...

Page 26

... CL4790 User’s Manual Consider a remote temperature monitoring system where the transceivers have to transmit their temperature reading periodically. When the Receive API is enabled every data packet received has also the information about the transceiver that transmitted the packet. This information is very useful in identifying the transceiver and analyzing its wireless link. ...

Page 27

... CL4790 User’s Manual 4.2.2.6 Programming the CN4790 units 1. Connect a CN4790 unit to the serial communications port on the PC. 2. Connect the power supply to the CN4790 unit. Make sure the Pwr LED is on. 3. Start the CN4790 Configuration Utility. 4. Select the COM Port that is connected to the CN4790 unit on the PC Settings section. ...

Page 28

... PC Settings. message: “Radio not responding.” 2. Make sure the CL4790 unit uses the right serial cable. Refer to Section 2.1 RS-232 any other program that is using the same COM port as CL4790 is open, close that program and try to read the radio again. ...

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