آر اف (فرکانس رادیویی) و بی‌سیم ماژول‌ فرستنده‌گیرنده و مودم آر اف

Product Attributes

Introduction

The compact AC4790 900MHz transceiver replaces 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 no RF expertise. The AC4790 is a cost effective, high performance, frequency hopping spread spectrum (FHSS) transceiver designed for integration into OEM systems operating under FCC part 15.247 regulations for the 900 MHz ISM band. AC4790 transceivers operate in a masterless architecture. When an AC4790 has data to transmit, it enters transmit mode and starts transmitting a sync pulse intended for an individual radio or broadcasts to all transceivers within the same network and range. Intended receivers synchronize to this sync pulse, a session begins, and data is transmitted. This instinctive dynamic peer-to-peer networking architecture enables several transceiver pairs to carry on simultaneous conversations on the same network. To boost data integrity and security, the AC4790 uses FHSS technology featuring optional Data Encryption Standards (DES). Fully transparent, these transceivers operate seamlessly in serial cable replacement applications. Communications include both system and configuration data via an asynchronous TTL serial interface for OEM host communications. Configuration data is stored in an on-board EEPROM and most parameters can be changed on the fly. All frequency hopping, synchronization, and RF system data transmission/reception is performed by the transceiver, transparent to the OEM host.

Features

• Masterless: True peer-to-peer, point-to-multipoint, point-to-point
• Retries and acknowledgements
• API commands to control packet routing and acknowledgement on a packet-by-packet basis
• FHSS for security and interference rejection
• Customizable RF Channel number and system ID
• Hardware Protocol Status monitoring
• Two generic input and output digital lines and integrated ADC functions
• Continuous 76.8 kbps RF stream rate
• Software selectable interface baud rates from 1200 bps to 115.2 kbps
• Low cost, low power, and small size ideal for high volume, portable and battery powered applications
• All modules are qualified for Industrial temperatures (-40 °C to 80 °C)
• Advanced configuration available using AT commands