SITE (Site Survey) MenuThe SITE menu displays the results of a Site Survey conducted with this Gateway.NOD XXM XXR XXY XXG XX*SITESingle-clickButton 2Single-clickButton 2Double-clickButton 2adjust right rotaryswitch to survey theselected NodeDouble-clickButton 2AUTODISPLAYLOOPSite SurveyGateway The SITE menu displays the device number of the Node the Site Survey wasconducted with as well as the missed, green, yellow, and red received packetcount.The SITE menu is only available on the Gateways.To access the SITE menu, single-click button 1 to scroll across the menu levelsuntil reaching the Site Survey (SITE) menu.See Conducting a Site Survey Using the Menu System on page 17.See Interpreting the Site Survey Results on page 18.3.7.2 Interpreting the Site Survey ResultsSite Survey results are listed as a percentage of data packets received and indicate the signal strength of the receivedsignal.Result DescriptionGreen Packets received at a strong signal strength. A strong signal strength is greater than −90dBm at the receiver.Yellow Packets received at a good signal strength. A good signal is between −90 and −100 dBmat the receiver.Red Packets received at a weak signal strength. A weak signal is less than −100 dBm at thereceiver.Missed Packets not received on the first transmission and requiring a retry.Judging if the reliability of a network’s signal meets the needs of the application is not just a matter of green, yellow, andred packets received. In normal operating mode, when data packets are not received, the transmitter re-sends the packetuntil all data is received.For slow monitoring applications such as a tank farm, where data is required in terms of seconds or minutes, receivingmost of the data in the ‘red’ range, indicating a weak but reliable signal, transmits enough data for accurate monitoring.Nodes positioned near the outside range of the radio signal may have 90% of the data packets received in the red zone,again indicating a weak, but reliable signal.Sure Cross® Performance DX80 Wireless I/O Networks18 www.bannerengineering.com - Tel: 763.544.3164
