{"id":1509,"date":"2012-09-03T21:29:59","date_gmt":"2012-09-04T04:29:59","guid":{"rendered":"http:\/\/m2msupport.net\/m2msupport\/?page_id=1509"},"modified":"2018-12-14T23:15:03","modified_gmt":"2018-12-15T07:15:03","slug":"signal-quality","status":"publish","type":"page","link":"https:\/\/m2msupport.net\/m2msupport\/signal-quality\/","title":{"rendered":"Signal Quality"},"content":{"rendered":"<div class=\"video-responsive\"><iframe loading=\"lazy\" id=\"youTubePlayer\" width=\"750\" height=\"421\" src=\"https:\/\/www.youtube.com\/embed\/2rSxLaINV0w\" frameborder=\"0\" allowfullscreen=\"\"><\/iframe><\/div>\n<p>With <a href=\"http:\/\/m2msupport.net\/m2msupport\/download-at-command-tester\/\">Online AT Command Tester<\/a> tool, you can get the signal level of the device. The response for the AT+CSQ comamnd is also interpreted for teh corresponding dBm value.<\/p>\n<p><a href=\"http:\/\/m2msupport.net\/m2msupport\/download-at-command-tester\/\"><img decoding=\"async\" src=\"http:\/\/www.m2msupport.net\/m2msupport\/wp-content\/themes\/admired\/images\/signal_strength.PNG\" height=\"95%\" width=\"95%\"\/><\/a><\/p>\n<p>To find out what signal qualities are supported,<br \/>\nAT+CSQ=?<br \/>\n+CSQ: (0-31,99),(0-7,99)<br \/>\nOK<\/p>\n<p>The first part of the response is RSSI (Received signal strength indicator) and the possible values are,<br \/>\n0 -113 dBm or less<br \/>\n1 -111 dBm<br \/>\n2&#8230;30 -109&#8230; -53 dBm<br \/>\n31 -51 dBm or greater<br \/>\n99 not known or not detectable<\/p>\n<p>The second part of the response is the Bit Error Rate (BER) and the possible values are,<br \/>\n0&#8230;7 as RXQUAL values in the table in 3GPP TS 45.008 [20] subclause 8.2.4<br \/>\n99 not known or not detectable<\/p>\n<p>Now to get the signal level,<br \/>\nAT+CSQ<br \/>\n+Csq: 25,99<br \/>\nOK<\/p>\n<p>The RSSI values returned by the CSQ command is mapped to dBm value in the table below. In the above example, rssi value of 25 corresponds to -63 dBm which implies an excellent signal condition.<\/p>\n<table width=\"266\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<colgroup>\n<col width=\"64\"\/>\n<col width=\"85\"\/>\n<col width=\"117\"\/><\/colgroup>\n<tbody>\n<tr>\n<td width=\"64\" height=\"20\"><strong>Value<\/strong><\/td>\n<td width=\"85\"><strong>RSSI dBm<\/strong><\/td>\n<td width=\"117\"><strong>Condition<\/strong><\/td>\n<\/tr>\n<tr>\n<td height=\"20\">2<\/td>\n<td>-109<\/td>\n<td>Marginal<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">3<\/td>\n<td>-107<\/td>\n<td>Marginal<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">4<\/td>\n<td>-105<\/td>\n<td>Marginal<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">5<\/td>\n<td>-103<\/td>\n<td>Marginal<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">6<\/td>\n<td>-101<\/td>\n<td>Marginal<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">7<\/td>\n<td>-99<\/td>\n<td>Marginal<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">8<\/td>\n<td>-97<\/td>\n<td>Marginal<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">9<\/td>\n<td>-95<\/td>\n<td>Marginal<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">10<\/td>\n<td>-93<\/td>\n<td>OK<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">11<\/td>\n<td>-91<\/td>\n<td>OK<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">12<\/td>\n<td>-89<\/td>\n<td>OK<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">13<\/td>\n<td>-87<\/td>\n<td>OK<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">14<\/td>\n<td>-85<\/td>\n<td>OK<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">15<\/td>\n<td>-83<\/td>\n<td>Good<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">16<\/td>\n<td>-81<\/td>\n<td>Good<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">17<\/td>\n<td>-79<\/td>\n<td>Good<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">18<\/td>\n<td>-77<\/td>\n<td>Good<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">19<\/td>\n<td>-75<\/td>\n<td>Good<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">20<\/td>\n<td>-73<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">21<\/td>\n<td>-71<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">22<\/td>\n<td>-69<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">23<\/td>\n<td>-67<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">24<\/td>\n<td>-65<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">25<\/td>\n<td>-63<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">26<\/td>\n<td>-61<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">27<\/td>\n<td>-59<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">28<\/td>\n<td>-57<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">29<\/td>\n<td>-55<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<tr>\n<td height=\"20\">30<\/td>\n<td>-53<\/td>\n<td>Excellent<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>With Online AT Command Tester tool, you can get the signal level of the device. The response for the AT+CSQ comamnd is also interpreted for teh corresponding dBm value. To find out what signal qualities are supported, AT+CSQ=? +CSQ: (0-31,99),(0-7,99) &hellip; <a href=\"https:\/\/m2msupport.net\/m2msupport\/signal-quality\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"software_howto.php","meta":{"footnotes":""},"class_list":["post-1509","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/pages\/1509","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/comments?post=1509"}],"version-history":[{"count":11,"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/pages\/1509\/revisions"}],"predecessor-version":[{"id":19177,"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/pages\/1509\/revisions\/19177"}],"wp:attachment":[{"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/media?parent=1509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}