The high-performance AC4790 radio modules utilize Laird's masterless protocol, allowing each radio module to communicate with any other in-range radio module for true peer-to-peer operation. Using field-proven 900MHz FHSS technology that needs no additional site licensing*, AC4790s reject interference, enable co-located system operation, and ensure data integrity. The AC4790's protocol features a dynamic addressing scheme, that simplifies node-to-node communication. The radio module enables identification of the most efficient transmission path, so OEMs can design routing sequences that optimize the RF network. This makes the AC4790 ideal for a wide variety of industrial applications that must rely on smooth, constant data flow. Developer tools and comprehensive technical support are available to aid integration. Let Laird help you find the best fit for your application.
Note: Some variants of the AC4790 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:
|Product Type||Technology||OS/Software||System Architecture||Chipset (Wireless)||Antenna Type||Logical Interfaces||Frequency Range (Min)||Frequency Range (Max)||Channels||Compliance||Data Rate||Dimension (Height - mm)||Dimension (Length - mm)||Dimension (Width - mm)||Frequency||Input Power||Network Architecture||Operating Humidity||Output Power||Power Consumption||Power Consumption (Rx)||Power Consumption (Tx)||Receive Sensitivity||Storage Humidity|
|AC4790-1000m||Embedded Module||Proprietary RF (9xx MHz)||Configuration and Test Software||Hosted||TI CC1010||External||UART||902 MHz||928 MHz||32 Channels US/Canada||None||76.8 Kbps||5.08 mm||48.26 mm||41.91 mm||902 - 928 MHz US/Canada 915 - 928 MHz Australia, US/Canada (optional)||Pin 10: 3.3 - 5.5V -50 mV ripple, Pin 11: 3.3 -3%, -100 mV ripple||Peer-to-peer||10% - 90%||743 mW - 1486 mW||Up to 1300 mA||30 mA||1300 mA||-110 dBm||10% - 90%|
|Product Type||Technology||OS/Software||System Architecture||Chipset (Wireless)||Antenna Type||Logical Interfaces||Frequency Range (Min)||Frequency Range (Max)||Channels||Compliance||Data Rate||Dimension (Height - mm)||Dimension (Length - mm)||Dimension (Width - mm)||Input Power||Network Architecture||Operating Humidity||Output Power||Power Consumption||Power Consumption (Rx)||Power Consumption (Tx)||Receive Sensitivity||Storage Humidity|
|AC4790-200M||Embedded Module||Proprietary RF (9xx MHz)||Configuration and Test Software||Hosted||TI CC1010||External||UART||902 MHz||928 MHz||16 Channels US/Canada, 8 channels, Australia/US/Canada||None||76.8 Kbps||5.08 mm||48.26 mm||41.91 mm||3.3 - 5.5V, -50 mV ripple||Peer-to-peer||10% - 90%||5mW-200mW variable||Up to 106 mA||106 mA||38 mA||-100 dBm||10% - 90%|
|Product Type||Technology||OS/Software||System Architecture||Chipset (Wireless)||Antenna Type||Logical Interfaces||Frequency Range (Min)||Frequency Range (Max)||Antenna Options||Channels||Compliance||Connector||Data Rate||Dimension (Height - mm)||Dimension (Length - mm)||Dimension (Width - mm)||Input Power||Network Architecture||Operating Humidity||Output Power||Power Consumption||Power Consumption (Rx)||Power Consumption (Tx)||Protocols||Receive Sensitivity||Security||Storage Humidity||Weight||Wireless Specification|
|AC4790LR-1000M||Embedded Module||Proprietary RF (9xx MHz)||Configuration and Test Software||Hosted||TI CC1010||External||UART||902 MHz||928 MHz||MMCX Connector||32 Channels||None||20-Pin Mini Connector||76.8 Kbps||5.08 mm||48.26 mm||41.91 mm||3.3 V||Peer-to-peer||10% - 90%||743 mW - 1486 mW||Up to 1300 mA||30 mA||1300 mA||FHSS Wireless Protocol||-110 dBm||One-byte system ID||10% - 90%||.705 oz (20 g)||900 MHz FHSS|
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|Application Note - Enabling the Security Pane in the RAMP Configuration Utility||All||Application Note||03/01/2019|
|RoHS 3 - Bluetooth||All||Certification||11/10/2020|
|User Guide - AC4790 Module||All||Documentation||07/01/2021|
|Hardware Integration Guide - AC4790 Module||All||Datasheet||06/24/2021|
|EOL - RAMP - Nov-15-2015||All||Documentation||03/01/2019|
|Product Brief - AC4790||All||Product Brief||06/24/2021|
|Product Brief - RAMP Development Kits||All||Product Brief||05/16/2019|
|Laird Configuration and Test Utility Software - RAMP Modules||All||Documentation||09/14/2021|
|Laird Configuration and Test Utility Software v6.07||All||Software||04/07/2021|
|RoHS 3 - RAMP ISM Modules||All||Certification||11/10/2020|
|EOL - Multi/Mass - Sept 21||All||Documentation||09/08/2021|
Can I get true full duplex operation from the RAMP products (RM024, AC4490, AC4790, LT1110, CL4490, CL4790)?
In the Laird RAMP line of products there is a feature called Full Duplex that leads one to believe they can talk upstream and downstream simultaneously. This is not the case, Full Duplex in the RAMP products gives a dedicated slot within the frame to the Server or Initiator and the second slot or next frame to the Client or Responder.
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
Can I choose an RF Channel that is outside of Wi-Fi interference on the RAMP radios?
RF Channel setting in our Laird RAMP modules and radios is not a true RF Channel or frequency of operation, it is actually just specifying a psuedo-random hopping sequence. The radios must, per the FCC, hop through every frequency in the band.
RF Channel setting is only choosing a hopping pattern for navigating through all of the channels but each channel will be hopped to within a single pattern.
Do any of the RAMP products support XON-XOFF?
Xon-Xoff is not supported on any of our RAMP products. Flow control (handshaking) uses hardware RTS and CTS.
What is difference between AC4490/AC4790 product part numbers that end with -01, -02, -03?
The -01, -02, -03 at the end of the part number signifies the version of firmware loaded to the module.
These firmware versions are Regionally significant and apply certified for the regions listed:
|AC4490LR-1000M-01 Long Range||FCC/IC||North America|
|CL4490-1000-232-01 (RS232)||FCC/IC||North America|
|CL4490-1000-232-SP-01 (RS232 - Starter Pack - Includes 2 units)||FCC/IC||North America|
|CL4490-1000-485-01 (RS485)||FCC/IC||North America|
|CL4490-1000-485-SP-01 (RS485 - Starter Pack - Includes 2 units)||FCC/IC||North America|
*RMC/C-Tick Certified modules/ConnexLink must be purchased through Tekdis as they hold the certification.
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.