CL4790-1000-232 Laird Technologies, CL4790-1000-232 Datasheet - Page 5

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

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 User’s Manual
1. CL4790 RF Transceiver
The CL4790 transceiver is a Frequency-Hopping Spread Spectrum (FHSS) radio designed for
license-free operation in the 900MHz ISM band. Out-of-the box, the radio sustains a standard
asynchronous serial data stream between two or more radios. Housed in a compact and rugged
die-cast enclosure, the radio is equipped to replace thousands of meters of serial cable with its
wireless link. The radio features an RS-232 or RS-485 interface for integration into legacy data
systems.
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The CL4790 uses Frequency Hopping Spread Spectrum modulation, 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 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. This instinctive dynamic peer-to-peer networking architecture enables
several transceiver pairs to carry on simultaneous conversations on the same network.
CL4790s implement a proprietary communication protocol to provide secure data transmissions.
As it uses FHSS technology, the data remains reliable over long distances. Use of license free
frequency bands ensure that the units are ready to use with no further certification requirements.
Each unit is small and easily portable for use in mobile and temporary settings as well as for fixed
installations. The CL4790 configuration software enables custom configurations based on unique
application requirements.
6/24/2005
Features
Masterless: True peer-to-peer, each module can communicate with any other module
within its range.
API commands to control packet routing and acknowledgement on a packet-by-packet
basis
Durable Industrial grade enclosure
Transparent operation, supports any legacy system
Transmits around corners, through walls
Reliable communication up to 115.2Kbps
Point-to-Point and Point-to-Multipoint setups
Overview
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