Modular Integration Instructions TWIG V Module 12907 Nelson Irrigation Corporation Revision: A The information in this document is subject to change without notice (Rev.
Table of Contents 1. 2. 3. 4. 5. 6. 7. Introduction and List of Rules Operational Use Conditions RF Exposure Considerations Antennas Label and Compliance Information Test Modes Additional Testing The information in this document is subject to change without notice (Rev.
1. Introduction and List of Rules 1.1. Purpose and Scope The purpose of this document is to provide supplemental information to the “Application Guide for the TWIG V Module 12907” and is intended to be used by an OEM for incorporating the TWIG V module into an end product. 1.2. Applicable Documents • Application Guide for the TWIG V Module 12907 1.3. List of Rules The FCC rules governing this module are found in 47 CFR § 15.247. 2.
All external antennas used with the TWIG V module should be connected in a manner outlined in sections 5.2 and 5.3 of the “Application Guide for the TWIG V Module 12907”. The firmware in the TWIG V module enables the wireless transceiver to operate using LoRaÒ modulation using a spreading factor of eight using a 500 KHz bandwidth. The transmit power is set to 24 dBm. The wireless transceiver is configured to operate on any of fifty channels, with channel 1 centered at 902.
Figure 2. TWIG V Module with Console and Power Cable. The console connector has the following pinout: Pin 1: Supply voltage (1.8 to 5.5 volts DC) Pin 2: Module RX Pin 3: Module TX Pin 4: Ground The serial port that is configured as 115,200 baud, 8 bits, no parity, and one stop bit (115200/8/N/1). The available commands for this test are: abc - test command that returns “xyz=0” clock - returns current value of tick() help - list commands reset - hard reset board.
setModulatedTx - put the radio into pseudo-random transmit for n cycles. n=0 will transmit until the power is removed. setModulatedTx=0 -> transmit getFrequency - return current testing frequency in Hz. setFrequency - set the testing frequency in Hz.
To configure the TWIG V module for use as an Extender for as an unintentional radiator, the following command sequence is recommended: setFrequency=915000000 Testfrequency=915000000 bleQuiet BLE in quiet mode setAntenna=1 Antenna = EXTERNAL setRxExtender Extender Rx mode 7. Additional Testing The modular transmitter is only FCC authorized for specific rule parts (i.e. FCC transmitter rules) listed on the grant.
