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RPM3-914-17-3V-RPS Datasheet(PDF) 8 Page - Radiometrix Ltd |
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RPM3-914-17-3V-RPS Datasheet(HTML) 8 Page - Radiometrix Ltd |
8 / 15 page Radiometrix Ltd. UHF FM Radio Packet Modem page 8 FLOW Sets the serial flow control between the host and RPM3. Using no flow control enables the RPM3 to be used with a 3 wire serial link (TXD, RXD, GND). Care must be taken in order to prevent overflowing the 96 byte serial receive buffer in the RPM3. Using hardware flow control enables the RPM3 to control the flow of serial data being received. default none valid range hw, none SERDLY Sets the serial data receive to packet transmit delay. When the RPM3 receives the first byte of data from the host, it starts a timer running. Either a full buffer of data to send or a timeout of this timer will allow the packet to be transmitted. Fine tuning this delay for the baud rate the RPM3 is operating at can significantly increase throughput while reducing unnecessary transmissions. default 2 (x10ms) valid range 2 to 255 (x10ms) SHDN Sets the action of the WAKE input. Setting shutdown to ON will cause the RPM3 to monitor the WAKE input. When WAKE is taken high the RPM3 will be forced into low power sleep mode, thus reducing current consumption. Subsequently lowering the WAKE input will bring the RPM3 out of low power sleep mode. SHDN should be set to OFF or WAKE pin should be pulled Low when the host (DTE) cannot provide DTR control signal to wake RPM3 in a 3-wire serial interface. default On valid range on, off RETRY Sets the number of data retry attempts. RF interference can cause a transmitted data packet to be lost or corrupt on reception. If this happens the RPM3 will retransmit any unacknowledged transfer. The transmission will be retried the specified number of times before the link to the remote unit is considered ‘lost’ and the data purged. default 5 valid range 1 to 63 STRTMSG Enables the startup message. The startup message is enabled by default, thus giving an immediate indication of the operation of the RPM3. The message can be disabled prior to deployment of the RPM3 module. default On valid range on, off ACKMODE Enables transfer acknowledgements. This function enables packet transfer acknowledgements to be returned for every outgoing packet. Packet acknowledgements aid in the delivery of error free and consistent data transfers between a pair of modems. Disabling the acknowledgements results in higher data throughput between modems, but does not protect against lost data due to RF interference. It should be disabled while using RPM3 in a broadcast mode. default On valid range on, off REMOTE Enables remote configuration. Over-air remote configuration of a RPM3 module is possible once it has been enabled. The remote command is used to send remote configuration commands. See the following chapter for a overview of remotely configuring a RPM3 module. default On valid range on, off RADAR Starts the radar test. Used as a range or confidence test between RPM3 modules within the same site. parameter Unit number between 0 and 15. |
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