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Summary of Contents for Laird CL4490
- Page 1 CL4490 ARDWARE NTEGRATION UIDE ERSION wireless.support@lairdtech.com www.lairdtech.com/ramp FCC Notice...
- Page 2 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.
- Page 3 CL4490 Hardware Integration Guide Version 1.0 EVISION ISTORY Version Date Changes Approved By Separated from User Guide. Initial 11 Dec 2013 Chris Downey Release Laird Technologies Americas: +1-800-492-2320 Option 2 Europe: +44-1628-858-940 Hong Kong: +852-2923-0610 www.lairdtech.com/ramp...
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Page 4: Table Of Contents
CL4490 Hardware Integration Guide Version 1.0 ONTENTS 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 .............................. -
Page 5: Cl4490 Rf Transceiver
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. -
Page 6: Features
Low latency and high throughput Detailed Specifications Table 1: CL4490 Specifications INTERFACE CL4490: DB-9 Male (RS232), Terminal Block (RS485), Type B USB (USB) Serial Interface Connector CL4490-PRO: DB-9 Female 50 Ohm RPSMA Connector RF Connector Baud rates from 1200 bps to 115.2 Kbps... - Page 7 CL4490 Hardware Integration Guide Version 1.0 POWER SETTINGS (Input Voltage: 12 v DC) Transmit – Full Duty Cycle Max Power Setting Current (mA) Quarter Half Full Receive – Transceiver in Idle Max Power Setting Current (mA) Quarter Half Full ENVIRONMENTAL -40°...
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Page 8: Serial Interface
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). - Page 9 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.
- Page 10 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.
- Page 11 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.
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Page 12: Cl4490-Pro Serial Interface
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. - Page 13 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.
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Page 14: Hardware Flow Control
(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. - Page 15 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).
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Page 16: Hardware
CL4490 Hardware Integration Guide Version 1.0 ARDWARE Mechanical Drawing Note: Overall dimensions apply to both the CL4490 and CL4490-PRO. Figure 11: CL4490 Mechanical Laird Technologies Americas: +1-800-492-2320 Option 2 Europe: +44-1628-858-940 Hong Kong: +852-2923-0610 www.lairdtech.com/ramp... -
Page 17: Approved Antenna List
CL4490 Hardware Integration Guide Version 1.0 Approved Antenna List Table 8: CL4490 approved antennas Laird Part Manufacturer Part Manufacturer Type Gain CL4490- CL4490- Number Number (dBI) 1000/PRO 0600-00019 S467FL-5-RMM-915S Nearson 1/2 Wave Dipole 0600-00025 S467FL-5-RMM-915 Nearson 1/2 Wave Dipole 0600-00024... -
Page 18: Related Documents And Files
Version 1.0 ELATED OCUMENTS AND ILES 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 ...
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