AC4790LR-200M Laird Technologies, AC4790LR-200M Datasheet
AC4790LR-200M
Specifications of AC4790LR-200M
Related parts for AC4790LR-200M
AC4790LR-200M Summary of contents
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Contents AC4790 TRANSCEIVER MODULE 1 AC4790 features 1 Overview 1 SPECIFICATIONS 3 Pin Definitions 5 Electrical Specifications 7 THEORY OF OPERATION 8 Masterless Architecture 8 Modes of Operation 8 Transmit Mode 8 Receive Mode 9 Command Mode 10 API CONTROL ...
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Copyright © 2007 Laird Technology, Inc. All rights reserved. The information contained in this manual and the accompanying software programs are copyrighted and all rights are reserved by Laird Technology, Inc. Laird Technology, Inc. reserves the right to make periodic ...
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Revision Description Version 1.0 2/21/05 - Initial Release Version Version 1.1 3/4/05 - Updated Session Count Truth Table Version 1.2 4/26/05 - Updated Transmit Mode Section Version 1.3 3/17/06 - Corrected API Send Data Complete. Added Australian Channels. Added 1x1 ...
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AC4790 T RANSCEIVER The compact AC4790 900MHz transceiver can replace miles of cable in harsh industrial environments. Using field-proven FHSS technology which needs no additional FCC licensing in the Americas, OEMs can easily make existing systems wireless with little or ...
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and most parameters can be changed on the fly. All frequency hopping, synchronization, and RF system data ...
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S PECIFICATIONS Pin Interface Connector Molex 87759-0030, mates with Samtec SMM-110-02-S-D RF ...
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... Transceiver (Cont’d) AC4790-1x1 mile AC4790-200 miles AC4790LR-200 miles AC4790-1000 miles AC4790LR-1000 miles Environmental -40°C to 80°C -50°C to +85°C 10% to 90% Physical Transceiver with MMCX Connector: 1.65” x 1.9” x 0.20” Transceiver with Integral Antenna: 1.65” x 2.65” x 0.20” ...
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The AC4790 has a simple interface that allows OEM Host communications with the transceiver. The table below shows the connector pin numbers and associated functions. The ...
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Module 1x1 Pin Pin 1,8,20 24- N/A 14 ...
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T O HEORY OF PERATION The Masterless architecture is a true peer-to-peer architecture, where any module that has ...
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Session Count is equal to Session Count Refresh (EEPROM address 0xC4) + number of broadcast attempts (EEPROM address 0x4D). Once the radio exits the Session it returns to the default Receive Mode ...
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Note: This is the default case with which the radio ships and works well for almost all applications. Case 4: In ...
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Receive Mode Pending RF ...
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API Transmit Packet is ...
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’ When both API Send Data Complete and API Receive Packet are enabled, the Send Data Complete will be received before the transceiver sees the Receive API Packet. ...
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S I ERIAL NTERFACE In order for the OEM Host and a transceiver to communicate over the serial interface they need to have the same serial data rate. Refer to the following sections to ensure that the OEM Host data ...
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Note: Enabling parity cuts throughput and the interface buffer in half The OEM Host Data Rate is the rate with which the OEM Host and ...
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BaudL Baud Rate (0x42) 115,200 0xFE 1 57,600 0xFC 38,400 0xFA 28,800 19,200 14,400 9,600 0xE8 4800 0xD0 2400 0xA0 1200 1. 57,600 ...
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Flow control refers to the control of data flow between transceivers the method used to handle data in the transmit/receive buffer and determines how data flow between ...
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should be a strong consideration when designing the system ’ ...
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’ What effects will Random Backoff have on system latency? As the random backoff value increases, the overall system latency increases. Worst case latency (Half Duplex ...
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Max Power provides a means for controlling the RF output power of the AC4790. Output ...
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H I ARDWARE NTERFACE Below is a description of all hardware pins used to control the AC4790 ...
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prevent the transceiver from sending it data by disabling RTS (logic High). Once RTS is enabled (logic Low), the transceiver can ...
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C ONFIGURING THE The AC4790 can be configured using the CC Configuration Commands. The CC Commands can be issued using either Hardware or Software Configuration. To use Hardware Configuration, pin transceiver must be asserted Low. Software Configuration ...
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The AC4790 transceiver contains static memory that holds many of the parameters that control the ...
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Command Name AT Enter 0x41 Command Mode Exit AT Command Mode 0xCC Status Request 0xCC Change Channel 0xCC ...
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Prior to sending this command, ...
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The ...
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The OEM Host issues this command to read the state of both digital input lines ...
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The OEM Host issues this command to read any of the three ...
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EE PROM Byte Re ad Upon receiving this command, a transceiver will respond with the desired data from the addresses requested by the OEM Host. EE PROM Byte Upon receiving this command, a transceiver will write ...
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EEPROM P ARAMETERS The OEM Host can program various parameters that are stored in EEPROM which become active after a power-on reset. The table below gives the locations and descriptions of the parameters that can be read/written by the OEM ...
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EEPROM Length Parameter Address (Bytes) 0x56 1 Control 1 0x58 1 Interface Timeout 0x5B 1 RF ...
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EEPROM Parameter Address 0x90 Product ID 0xC1 API Control 0xC2 Protocol Status 0xC4 Session Count Refresh 0xC3 Random Back-Off 0xC8 Sense Adjust ...
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EEPROM Length Parameter Address (Bytes) 0xC9 1 Probe Report 0xD0 7 DES Key Range Default Description ...
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D IMENSIONS Interface Connector - 20 pin OEM Interface connector (Molex 87759-0030, mates with Samtec SMM-110-02-S-D MMCX Jack - Antenna Connector (Johnson ...
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Module Outline 21 22 RESET 9600_BAUD (TST_M ODE) 23 N/C 24 N/C 25 N/C 26 N RECOMMENDED PAD PATTERN (viewed from top) 0.080 x ...
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Use several large vias (0.030" ...
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O I RDERING NFORMATION ...
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C I OMPLIANCY NFORMATION Due to the RF antenna trace residing on the OEM Host PCB, the FCC will not grant modular approval for the AC4790- 1x1 and requires the ...
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Laird Technologi Manufacturer Part es Part Number - 1020B5812-04 Flavus - - Y2283A0915-10RP - - - - ...
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Label and text information should size of type large enough to be readily legible, consistent with the dimensions of the equipment and the label. However, the type size for the text is not required to be larger ...
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PPENDIX AMPLE Below is a simple switching power supply that provides enough current to easily power any Laird Technology OEM module. It utilizes low cost, off the shelf components that fit into a small area. This ...
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PPENDIX TO All inputs on the AC4790-200 & AC4790-1000 are weakly pulled high via 10 kohm resistors. The AC4790-200 has 5V inputs while the AC4790-1000 & AC4790-1x1 have 3.3V inputs. The AC4790-200 uses an octal buffer ...
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A III - API PPENDIX The API feature set of the AC4790 provides powerful packet routing capabilities to the OEM Host. The number of API configurations is endless as individual radios can all be configured differently to suit the OEM ...
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poll radio 1, the SAP transmits the packet using the following format poll radio 2, the SAP ...
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The remote response is dependent on the OEM’s specific needs and equipment. In many cases, remote radios are connected to dumb devices without ...
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Receive API is not enabled, the transceiver will receive the reply data only ...
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Radio B receives the packet “FIND D”, and stores it in the buffer until the current session with Radio 2 A has ended. ...
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A and radios B & C. When the repeater receives a packet from radio A, it will transmit the packet out to radios B & the repeater is set to Broadcast mode, radio A will receive a ...
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API T PPENDIX IMING IAGRAMS Session Count = 8, Retries = 3 Session Count = 3, Retries = 3 www.lairdtech.com\wireless IV ...
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Session Count = 2, Retries = 2 Session Count = 1, Retries ...