AC4490 Series

Recommended for New Design (RND)

Overview

Laird compact AC4490 900MHz radio modules replace miles of cable in harsh industrial environments. Using field-proven FHSS technology that needs no additional site licensing*, AC4490s reject interference, enable co-located system operation, provide a full range of output power, and maintain data integrity. The AC4490 features include drop-in installation and a number of on-the-fly control commands, providing OEMs with a versatile interface for any application. They can be used as direct cable replacements, requiring no special host software for communication. All frequency hopping, synchronization, and RF system data transmission/reception is performed by the module. This radio module can achieve open field ranges in excess of 20 miles, has high propogation in the 900 MHz band, and includes options for 1W power transmission and a sensitive low noise amplifier in the receive chain. AC4490 modules are socket-compatible with Laird 2.4GHz AC4424 modules, enabling OEMs to design once and subsequently interchange radios to accommodate new markets, regulations, and environments. Developer tools and comprehensive technical support are available to aid integration. Contact Laird to help you find the best fit for your application.

Note: Some variants of the AC4490 and related DVK and SDK variants have reached end of production and are available on a limited basis only. Find the End of Life Announcement in the Documentation tab below. Only the following part numbers are affected:

- AC4490-200A- AC4490-200A-485- AC4490-200M-485- AC4490LR-200M- AC4490LR-RCVR

Specifications

Security
One byte System ID. 56-bit DES encryption key
Wireless Specification
900 MHz FHSS
Chipset (Wireless)
TI CC1010
Channels
3 Channel Sets comprising 56 total channels.
Connector Type
SDIO
Dimension (Height - mm)
5 mm
Dimension (Length - mm)
49 mm
Dimension (Width - mm)
42 mm
Frequency
902 - 928 MHz
Interface (Serial)
3.3V TTL UART baud rates from 1200 bps to 115,200 bps
Logical Interfaces
20-pin mini connector
Max Transmit Power
N/A
Protocols
FHSS Wireless Protocol
Weight
< 0.75 oz (< 21 g)
Antenna Options Channels Output Power Connector Type Data Rate Dimension (Height - mm) Dimension (Length - mm) Dimension (Width - mm) Encryption Receive Sensitivity Compliance Weight Operating Humidity Input Power Logical Interfaces Network Architecture Power Consumption (Rx) Power Consumption (Tx) Protocols Security Storage Humidity Range Wireless Specification Frequency Frequency Range (Max) Frequency Range (Min)
AC4490-1000M External antenna with MMCX plug 2 Channel Sets 743 mW typical Conducted (no antenna), 1486 mW typical EIRP (3 dBi gain antenna) 20 Pin Interface Connector 76.8 Kbps 5.08 mm 48.26 mm 41.91 mm 56-bit Data Encryption Standard (DES) -100 dBm FCC / IC Modular Approval < 0.75 oz (< 21 g) 10% - 90% VCC: 3.3 – 5.5 V ±50 mV ripple VPA: 3.3 ±3%, ±100 mV ripple SDIO AC4490 transceivers can operate in Point-to-Point Point-to-Multipoint, Client-Server, or Peer-to-Peer architecture. 100% Rx: 30 mA 100% Tx: 1300 mA FHSS Wireless Protocol One byte System ID. 56-bit DES encryption key 10% - 90% Up to 20 miles 900 MHz FHSS 902 – 928 MHz 928 MHz 902 MHz
Antenna Options Channels Output Power Connector Type Data Rate Dimension (Height - mm) Dimension (Length - mm) Dimension (Width - mm) Encryption Receive Sensitivity Compliance Weight Operating Humidity Input Power Network Architecture Power Consumption (Rx) Power Consumption (Tx) Protocols Security Storage Humidity Range Wireless Specification Frequency Frequency Range (Max) Frequency Range (Min)
AC4490-200M External antenna with MMCX plug 3 Channel Sets 100 mW typical Conducted (no antenna), 200 mW typical EIRP (3 dBi gain antenna) 20 Pin Interface Connector 76.8 Kbps 5.08 mm 48.26 mm 41.91 mm 56-bit Data Encryption Standard (DES) -100 dBm FCC / IC Modular Approval < 0.75 oz (< 21 g) 10% - 90% VCC: 3.3 – 5.5 V, ±50 mV ripple VPA: 3.3 – 5.5 V, ±50 mV ripple AC4490 transceivers can operate in Point-to-Point, Point-to-Multipoint, Client-Server, or Peer-to-Peer architecture. 100% Rx: 30 mA 100% Tx: 106 mA FHSS Wireless Protocol One byte System ID. 56-bit DES encryption key 10% - 90% Up to 4 miles 900 MHz FHSS 902 – 928 MHz 928 MHz 902 MHz
Antenna Options Channels Output Power Connector Type Data Rate Dimension (Height - mm) Dimension (Length - mm) Dimension (Width - mm) Encryption Receive Sensitivity Compliance Weight Operating Humidity Input Power Network Architecture Power Consumption (Rx) Power Consumption (Tx) Protocols Security Storage Humidity Range Wireless Specification Frequency Frequency Range (Max) Frequency Range (Min)
AC4490LR-1000M External antenna with MMCX plug 2 Channel Sets 743 mW typical Conducted (no antenna), 1486 mW typicalEIRP (3 dBi gain antenna) 20 Pin Interface Connector 76.8 Kbps 5.08 mm 48.26 mm 41.91 mm 56-bit Data Encryption Standard (DES) -110 dBm FCC / IC Modular Approval < 0.75 oz (< 21 g) 10% - 90% VCC: 3.3 – 5.5 V ±50 mV ripple VPA: 3.3 ±3%, ±100 mV ripple AC4490 transceivers can operate in Point-to-Point, Point-to-Multipoint, Client-Server, or Peer-to-Peer architecture. 100% Rx: 30 mA 100% Tx: 1300 mA FHSS Wireless Protocol One byte System ID. 56-bit DES encryption key 10% - 90% Up to 40 miles 900 MHz FHSS 902 – 928 MHz 928 MHz 902 MHz
Antenna Options Channels Output Power Connector Type Data Rate Dimension (Height - mm) Dimension (Length - mm) Dimension (Width - mm) Encryption Receive Sensitivity Compliance Weight Operating Humidity Input Power Network Architecture Power Consumption (Rx) Power Consumption (Tx) Protocols Security Storage Humidity Range Wireless Specification Frequency Frequency Range (Max) Frequency Range (Min)
DVK-AC4490LR-1000M External antenna with MMCX plug 2 Channel Sets 743 mW typical Conducted (no antenna), 1486 mW typical EIRP (3 dBi gain antenna) 20 Pin Interface Connector 76.8 Kbps 5.08 mm 48.26 mm 41.91 mm 56-bit Data Encryption Standard (DES) -110 dBm FCC / IC Modular Approval < 0.75 oz (< 21 g) 10% - 90% VCC: 3.3 – 5.5 V ±50 mV ripple VPA: 3.3 ±3%, ±100 mV ripple AC4490 transceivers can operate in Point-to-Point, Point-to-Multipoint, Client-Server, or Peer-to-Peer architecture. 100% Rx: 30 mA 100% Tx: 1300 mA FHSS Wireless Protocol One byte System ID. 56-bit DES encryption key 10% - 90% Up to 40 miles 900 MHz FHSS 902 – 928 MHz 928 MHz 902 MHz

Documentation

Name Part Type Last Updated
Application Note - Enabling the Security Pane in the RAMP Configuration Utility All Application Note 03-01-19
Application Note - Repeater Set-up All Application Note 03-01-19
Radio Equipment Directive (RED) Updates - May 2017 All Certification 03-01-19
RoHSII - EU WEEE Compliance BT RAMP v1 8 All Certification 07-12-19
Hardware Integration Guide - AC4490 All Datasheet 05-16-19
User Guide - AC4490 All Documentation 03-01-19
User Guide - RAMP-AC Development Kit All Documentation 03-01-19
Application Note - Sync to Channel - AC4490 All Documentation 03-01-19
EOL - RAMP - Nov-15-2015 All Documentation 03-01-19
Product Brief - RAMP Development Kits All Brochure 05-16-19
Product Brief - AC4490 All Brochure 05-16-19
Laird Configuration and Test Utility Software - RAMP Modules All Documentation 03-01-19
RAMP Config Tool v6.07.zip All Software 01-17-19
ConnexLinkConfigWizard v2.1.msi All Software 01-17-19
WirelessSerialDeviceDriverInstall.zip All Software 01-17-19
Zigbee RF Diagnostics Suite AC4490 Download.zip All Software 01-17-19

FAQ

I have purchased two AC4790-xxxx modules and they are not communicating well or at all?

The SLOCK 0 and SLOCK 1 settings in the AC4790 EEPROM configuration control how a receiving radio synchronizes and communicates with a transmitting/broadcasting radio, considered Sessions. The length of the Session is dependent on the Session Count setting and which value the local radio loads to its Current Session Counter in order to determine the length of the Session, 1 Session Count = 1 hop time or 20ms. There are 4 possible Session configurations which are chosen using the SLOCK 0 and SLOCK 1 bits (Address Location: 0xC1, bit 4 and 5. The 4 states are: SLOCK 0 SLCOK 1 Session Actions RX/TX or Broadcaster 0 0  Receiver loads its Current Session Counter with its Session Count value.  TX/Broadcaster loads its Current Session Counter with its Current Session Count. 0 1  Receiver loads its Current Session Counter with its Transmit Retries + Session Count.  TX (Broadcaster) loads its Current Session Counter with its Transmit Retries + Session Count (Broadcast Attempts + Session Count). --Last two Session settings are only valid for Transmitters not Broadcasters- 1 0  Receiver loads its Current Session Counter with the remote radio's Session Count.  TX loads its Current Session Counter with the remote radio's Session Count. 1 1  Receiver loads its Current Session Counter with the remote radio's Current Session Counter value.  TX loads its Current Session Counter with the remote radio's Current Session Count The ideal SLOCK 0/1 settings for a simple Point-to-Point network is the last Session Type in the table above, SLOCK 0 = 1 and SLOCK 1 = 1. However, the Default AC4790 EEPROM Configuration is set to use the 3rd Session Type in the table above, SLOCK 0 = 1 and SLOCK 1 = 0. For a Point-to-Point network set SLOCK 1 = 1, from a default configuration state, on both AC4790 radio's and retest communications.

I have TX API/RX API enabled on my RM024/AC4490/AC4790/CL4490/CL4790 and I'm seeing errors when I run the Range Test, why?

The API features in the RAMP radios allow for dynamically addressing packets (TX API), getting the sender's information when receiving a packet (RX API), and knowing when a packet was successfully transmitted (Send Data Complete). TX API and RX API both append a header to transmitted or received data while Send Data Complete is a separate message that gets sent to the transmitting radio's host when the packet that was transmitted is received successfully at the other end. The Laird Configuration and Test Utility Range Test does not account for these additional headers or packets when 'Create Data' is used in the 'Transmit Packet Selection' field. It will not append headers to the transmitted data so if TX API is enabled all packets for transmission will be tossed because of the lack of a header. It will not account for the additional header that is added to the received packet when RX API is enabled so all packets received will be received as "Data Error". It will not account for the extra packet sent to the transmitting radio's Host when Send Data Complete is enabled so anytime this message is sent it will be seen as a "Data Error".  In order to work with the API features on the RAMP radios you should use the scripting feature to write an API script and load it in the 'Transmit Packet Selection' field as 'Load File'.

More information about scripting can be found in Appendix 1 of the Laird Configuration and Test Utility Software - RAMP Modules.pdf

 

Is there any benefit to Sync-to-Channel on the AC4490 if the channel is not changed?

The benefit with Sync-to-Channel is that it synchronizes every ConnexLink with the same system ID and channel number in the infrastructure. The downside is that if the main synchronizing server goes down, then the entire infrastructure goes down. Co-locating multiple systems with different system ID and channel numbers is usually a better solution unless the infrastructure synchronization is required.

What is the main difference between the AC4490 and the AC4790?

The AC4790 and AC4490 are identical hardware modules, they only differ in the firmware that is loaded to them. The AC4490 has a server / client architecture while the AC4790 has a masterless architecture. The AC4490 requires a server in each network that is used to keep all the clients in sync; all radios hop together through the frequency bins. The AC4790 does not require a server to keep sync and therefore all radios are hopping independently through the frequency bins and only synchronize when there is data to be transmitted.  A masterless radio can be used to build a mesh-type network where a server / client is limited to a star network.