CL4790-1000-232 Laird Technologies, CL4790-1000-232 Datasheet - Page 26

• 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
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.
The Transmit API, Send Data Complete and Receive API can be used in any combination to suit
different applications.
Note: When both Send Data Complete and Receive API on the API Mode is enabled Send Data
Complete is to be received before the transceiver gets a Receive API packet (i.e. receives
another packet before it gets an acknowledge for a packet sent). However this order may get
reversed when the Send Data Complete packet is missed and is being resent after the Receive
API packet is received.
Note: The API Mode over writes all the RF Delivery settings.
4.2.2.5 PC Settings
IP Address: IP Address of the CN4490 unit.
Port: Port number of the CN4490 unit, the Port number is always 2101.
6/24/2005
Send Data
Complete
Local Transceiver
OEM Host
packet
Transmit API
RF Transmit Packet
RF Acknowledge
Receive
API
packet
Remote Transceiver
OEM Host
26