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CL4790 Hardware Integration Guide

 

 

Version 3.0 

 

 

Americas: +1-800-492-2320 Option 2 
Europe: +44-1628-858-940 
Hong Kong: +852-2923-0610 

www.lairdtech.com/ramp

 

CONN-HIG_CL4790 

 

Detailed Specifications 

Table 1: CL4790-1000 Specifications 

INTERFACE 
Serial Interface Connector 

DB-9 Male (RS232), Terminal Block (RS485) 

RF Connector 

RPSMA Jack 

Serial Interface Data Rate 

Baud rates from 1200 bps to 115.2 Kbps 

Power Consumption 

400 mA @ 12 VDC 

Channels 

US/Canada: 32 channels 
Australia: 8 channels 

Supported Network 
Topologies 

Point-to-Point, Point-to-Multipoint 

Security 

One byte System ID. 56-bit DES encryption key. 

Interface Buffer Size 

Input/Output: 256 bytes each 

OPERATIONAL 
Frequency Band 

902 – 928 MHz (US/Canada) 
915 – 928 MHz (US/Canada, Australia) 

RF Data Rate 

76.8 Kbps fixed 

Host Data Throughput 

20.5 Kbps maximum 

RF Technology 

Frequency Hopping Spread Spectrum (FHSS) 

EEPROM write cycles 

20000 

Hop Period 

50 ms 

Output Power 

 

Conducted  (no antenna) 

EIRP  (3dBi gain antenna) 

CL4790-1000 

743 mW typical 

1486 mW typical 

 

Supply Voltage 

CL4790-1000: 7-18VDC; 400 mA 

Receiver Sensitivity 

-100dBm typical @ 76.8 kbps RF Data Rate 

Range, Line of Sight 
(based on 3dBi gain 
antenna) 

Max. 1500 feet (450 m) indoors; Max. 20 miles (32 km) line-of-sight 

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% 

Содержание CL4790

Страница 1: ...CL4790 HARDWARE INTEGRATION GUIDE VERSION 3 0 Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2923 0610 www lairdtech com ramp...

Страница 2: ...posure 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 fro...

Страница 3: ...790 REVISION HISTORY Version Date Changes Approved By 1 0 Initial Release Chris Downey 1 1 Changes and Revisions Chris Downey 2 0 02 Aug 2013 Major changes and revisions updated format and data Chris...

Страница 4: ...940 Hong Kong 852 2923 0610 www lairdtech com ramp 4 CONN HIG_CL4790 CONTENTS Revision History 3 Contents 4 CL4790 RF Transceiver 5 Overview 5 Features 5 Detailed Specifications 6 Status LEDs 7 Seria...

Страница 5: ...es several transceiver pairs to carry on simultaneous conversations on the same network CL4790s implement a proprietary communication protocol to provide secure data transmissions Using FHSS technolog...

Страница 6: ...Canada 915 928 MHz US Canada Australia RF Data Rate 76 8 Kbps fixed Host Data Throughput 20 5 Kbps maximum RF Technology Frequency Hopping Spread Spectrum FHSS EEPROM write cycles 20000 Hop Period 50...

Страница 7: ...ecautions 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 syste...

Страница 8: ...re 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 l...

Страница 9: ...hrough serial cable When interfacing two DCE or two DTE devices together a null modem cable or crossover cable is required to swap the pins and convert the signals accordingly Figure 3 DTE to DCE inte...

Страница 10: ...que 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 RS485 address therefore it tra...

Страница 11: ...e potential to be lost due to buffer overflow Ready to Send RTS is an input to the CL4790 from the OEM host When the RTS Enable option is selected in the software configuration of the CL4790 the trans...

Страница 12: ...RMM 915 Nearson 1 2 Wave Dipole 2 X 0600 00024 S467AH 915 Nearson 1 2 Wave Dipole 2 X 0600 00027 S467AH 915R Nearson 1 2 Wave Dipole 2 X 0600 00028 S161AH 915R Nearson 1 2 Wave Dipole 2 5 X 0600 00029...

Страница 13: ...3 CONN HIG_CL4790 RELATED DOCUMENTS AND FILES The following additional CL4790 technical documents are also available from the Laird RAMP ConnexLink modules product page under the Documentation tab Pro...

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