{"id":1918,"date":"2017-12-14T13:40:45","date_gmt":"2017-12-14T04:40:45","guid":{"rendered":"https:\/\/micronix-jp.com\/?p=1918"},"modified":"2024-09-04T11:28:37","modified_gmt":"2024-09-04T02:28:37","slug":"speed_signal","status":"publish","type":"post","link":"https:\/\/micronix-jp.com\/english\/tech\/technology\/speed_signal.html","title":{"rendered":"Field strength measurement position is identified with vehicle speed pulse."},"content":{"rendered":"<div class=\"wp-block-vk-blocks-table-of-contents-new vk_tableOfContents vk_tableOfContents-style-default tabs\"><div class=\"tab\"><div class=\"vk_tableOfContents_title\">\u76ee\u6b21<\/div><input type=\"checkbox\" id=\"chck1\"\/><label class=\"tab-label vk_tableOfContents_openCloseBtn button_status button_status-close\" for=\"chck1\"><\/label><ul class=\"vk_tableOfContents_list tab_content-close\"><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-2\"><a href=\"#vk-htags-aa54af0a-ba16-454a-bd48-cd5eead344c4\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">1. <\/span>Vehicle speed pulse<\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-2\"><a href=\"#vk-htags-3e9e9e49-51ec-4a53-9ac5-67ec773c0989\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">2. <\/span>Counter for vehicle speed pulse<\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-2\"><a href=\"#vk-htags-89dd854c-cc46-4e34-b08a-f00771be5603\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">3. <\/span>Relationship between traveling speed and frequency of vehicle speed pulse<\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-2\"><a href=\"#vk-htags-b4978760-67ec-4499-87fa-7d62dacd6654\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">4. <\/span>Products introduction<\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-3\"><a href=\"#vk-htags-ecdd3509-7b44-4ef0-89ad-aa250c056388\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">4.1. <\/span>Handheld signal analyzer MSA500 series<\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-3\"><a href=\"#vk-htags-928e7bf3-1a25-4753-8ca9-2a166feaed9f\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">4.2. <\/span>ETC \/ ITS Spot Electric Field Strength Measurement System ME9200<\/a><\/li><\/ul><\/div><\/div><p>When measuring the electric field strength by placing a signal analyzer MSA500 series or ETC\/DSRC electric field strength measurement system ME 9200 in a car, the measurement position can be identified using the vehicle speed pulse. <\/p><p>In this page, the method of converting the vehicle speed pulse to the measurement position will be described.<\/p><h2 class=\"wp-block-heading\" id=\"vk-htags-aa54af0a-ba16-454a-bd48-cd5eead344c4\">Vehicle speed pulse<\/h2><p>The vehicle speed pulse which is a pulse signal proportional to the revolution of the axle of car and is used to calculate the travel distance and speed of the vehicle. This signal can be drawn from the engine control unit or optional connector. As for actual connection, please contact each car dealer.<\/p><p>According to the JIS standard, the number of revolutions of the wire of the speedometer is set to 637 revolutions per 1 km travel. The number of pulses per wire revolution differs depending on the manufacturer of car, but is mostly 4 pulses or 2 pulses. Assuming that the diameter of the tire is 624 mm, the number of pulses is 5 pulses or 2.5 pulses per revolution of the tire.<\/p><p>In our software, the number of pulses per revolution of the tire and the actual diameter of the tire are input in the vehicle speed pulse setting. By adjusting the value of the diameter of tire, it is possible to fit to the numerical value that matches the actual running.<\/p><h2 class=\"wp-block-heading\" id=\"vk-htags-3e9e9e49-51ec-4a53-9ac5-67ec773c0989\">Counter for vehicle speed pulse<\/h2><p>Signal analyzer MSA 500 can operate the counter with an external trigger input. <\/p><p>The control of this counter and the readout of the count value are performed by using USB command with an external PC.<\/p><p>The following commands are provided.<\/p><figure class=\"wp-block-table\"><table><tbody><tr><th>Command<br class=\"smartphone\">\nheader<\/th><th>Parameters<\/th><th>Explanation<\/th><\/tr><tr><td>CTR_CLR<\/td><td>0, 1<\/td><td><p>Clear of counter for external trigger signal<\/p>\n<p> (0 : nomal, <br class=\"smartphone\">\n1 : clear)<\/p><\/td><\/tr><tr><td>CTR_\uff25\uff2e\uff22<\/td><td>0, 1<\/td><td><p>Enable of counter for external trigger signal<\/p>\n<p> (0 : disable, <br class=\"smartphone\">\n1 : enable)<\/p><\/td><\/tr><tr><td>CTR_OUT<\/td><td>Nothing<\/td><td>Transmission request of count value for external trigger signal (32bit)<\/td><\/tr><\/tbody><\/table><\/figure><p>The distance between measurement point A and measurement point B will be obtained as follows.\n$$\nDab=\u03c0=(Pb-Pa)Td\/Pr\n$$\n<\/p><p>However,\n$$\n\\begin{align}\nDab&amp;\uff1a\\text{Distance between measurement point A and measurement point B (m)}\\\\\nPa&amp;\uff1a\\text{Value of pulse counter at measurement point A}\\\\\nPb&amp;\uff1a\\text{Value of pulse counter at measurement point B}\\\\\nTd&amp;\uff1a\\text{Diameter of tire}\\\\\nPr&amp;\uff1a\\text{Number of pulses per revolution of tire}\n\\end{align}\n$$\n\n\n<\/p><h2 class=\"wp-block-heading\" id=\"vk-htags-89dd854c-cc46-4e34-b08a-f00771be5603\">Relationship between traveling speed and frequency of vehicle speed pulse<\/h2><p>Assuming that the traveling speed is Vr (km \/ h), the frequency Fp of vehicle speed pulse at that time will be expressed as follows.\n$$\nFp=Vr\/3.6 \\times Pr\/(\u03c0Td)\n$$\n<\/p><p>The table below shows the above equation.<\/p><p>Frequency of vehicle speed pulse $$Fp[Hz]$$<\/p><style>\ntable.tdRight td{\n  text-align: right;\n}\n<\/style><figure class=\"wp-block-table\"><table><tbody><tr><th>Speed (km\/h)<\/th><th>20<\/th><th>40<\/th><th>60<\/th><th>80<\/th><th>100<\/th><\/tr><tr><th>Fp(Pr=2.5)<\/th><td>7.1<\/td><td>14.2<\/td><td>21.3<\/td><td>28.3<\/td><td>35.4<\/td><\/tr><tr><th>Fp(Pr=5) <\/th><td>14.2<\/td><td>28.3<\/td><td>42.5<\/td><td>56.6<\/td><td>70.8<\/td><\/tr><\/tbody><\/table><\/figure><p>However, $$Td=0.624[m]$$<\/p><li><strong>Measures against noise of connection cable for vehicle speed pulse<\/strong><\/li><p>Since the vehicle speed pulse is input to the external trigger terminal in MSA 500, the noise countermeasure is carried out in the connection cable. The signals in car are mixed with many pulsed noises, so this countermeasure is indispensable.<\/p><p>When the output impedance of vehicle speed pulse is 5k\u03a9 , the cutoff frequency of a low pass filter for noise suppression will be approximately 1.8 kHz. Since the input impedance of the external trigger input terminal of MSA500 is 10k\u03a9, the voltage division ratio is about 1\/5.<\/p><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"\/eng\/image\/technology\/speed_signal-00.gif\" alt=\"Measures against noise of connection cable for vehicle speed pulse\"\/><\/figure><h2 class=\"wp-block-heading\" id=\"vk-htags-b4978760-67ec-4499-87fa-7d62dacd6654\">Products introduction<\/h2><h3 class=\"wp-block-heading\" id=\"vk-htags-ecdd3509-7b44-4ef0-89ad-aa250c056388\">Handheld signal analyzer MSA500 series <\/h3><p>With Fast Fourier Transform (FFT) and conventional sweep systems, each strong point of both systems is usable.<\/p><div class=\"vk_posts vk_posts-postType-product vk_posts-layout-card-noborder vk_postList \"><div id=\"post-5782\" class=\"vk_post vk_post-postType-product card card-noborder vk_post-col-xs-12 vk_post-col-sm-6 vk_post-col-md-3 vk_post-col-lg-3 vk_post-col-xl-3 vk_post-col-xxl-3 post-5782 product type-product status-publish has-post-thumbnail product_cat-shop-category-msa500 product_cat-shop-category-handheld-spectrum-analyzer product_tag-tag-handheld-spectrum-analyzer first instock shipping-taxable product-type-simple\"><div class=\"vk_post_imgOuter\" style=\"background-image:url(https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620.png)\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538.html\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-300x300.png\" class=\"vk_post_imgOuter_img card-img-top wp-post-image\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-600x600.png 600w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><!-- [ \/.vk_post_imgOuter ] --><div class=\"vk_post_body card-body\"><h5 class=\"vk_post_title card-title\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538.html\">Handheld Signal Analyzer MSA538<\/a><\/h5><p class=\"vk_post_excerpt card-text\">The most popular model of the MSA500 series.<br \/>\r\nMeasurement frequency : 20kHz to 3.3GHz <\/p><\/div><!-- [ \/.card-body ] --><\/div><!-- [ \/.card ] --><div id=\"post-5785\" class=\"vk_post vk_post-postType-product card card-noborder vk_post-col-xs-12 vk_post-col-sm-6 vk_post-col-md-3 vk_post-col-lg-3 vk_post-col-xl-3 vk_post-col-xxl-3 post-5785 product type-product status-publish has-post-thumbnail product_cat-shop-category-msa500 product_cat-shop-category-handheld-spectrum-analyzer product_tag-tag-handheld-spectrum-analyzer  instock shipping-taxable product-type-simple\"><div class=\"vk_post_imgOuter\" style=\"background-image:url(https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538e_620x620.png)\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538e.html\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538e_620x620-300x300.png\" class=\"vk_post_imgOuter_img card-img-top wp-post-image\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538e_620x620-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538e_620x620-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538e_620x620-600x600.png 600w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538e_620x620-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538e_620x620.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><!-- [ \/.vk_post_imgOuter ] --><div class=\"vk_post_body card-body\"><h5 class=\"vk_post_title card-title\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538e.html\">Handheld Signal Analyzer MSA538E<\/a><\/h5><p class=\"vk_post_excerpt card-text\">This is a model in which EMI measurement function is added to MSA538.<br \/>\r\nMeasurement frequency : 20kHz to 3.3GHz <\/p><\/div><!-- [ \/.card-body ] --><\/div><!-- [ \/.card ] --><div id=\"post-5784\" class=\"vk_post vk_post-postType-product card card-noborder vk_post-col-xs-12 vk_post-col-sm-6 vk_post-col-md-3 vk_post-col-lg-3 vk_post-col-xl-3 vk_post-col-xxl-3 post-5784 product type-product status-publish has-post-thumbnail product_cat-shop-category-msa500 product_cat-shop-category-handheld-spectrum-analyzer product_tag-tag-handheld-spectrum-analyzer  instock shipping-taxable product-type-simple\"><div class=\"vk_post_imgOuter\" style=\"background-image:url(https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538tg_620x620.png)\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538tg.html\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538tg_620x620-300x300.png\" class=\"vk_post_imgOuter_img card-img-top wp-post-image\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538tg_620x620-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538tg_620x620-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538tg_620x620-600x600.png 600w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538tg_620x620-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538tg_620x620.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><!-- [ \/.vk_post_imgOuter ] --><div class=\"vk_post_body card-body\"><h5 class=\"vk_post_title card-title\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538tg.html\">Handheld Signal Analyzer MSA538TG<\/a><\/h5><p class=\"vk_post_excerpt card-text\">Built-in TG from 5MHz to 3.3GHz<br \/>\r\nMeasurement frequency : 20kHz to 3.3GHz <\/p><\/div><!-- [ \/.card-body ] --><\/div><!-- [ \/.card ] --><div id=\"post-5783\" class=\"vk_post vk_post-postType-product card card-noborder vk_post-col-xs-12 vk_post-col-sm-6 vk_post-col-md-3 vk_post-col-lg-3 vk_post-col-xl-3 vk_post-col-xxl-3 post-5783 product type-product status-publish has-post-thumbnail product_cat-shop-category-msa500 product_cat-shop-category-handheld-spectrum-analyzer product_tag-tag-handheld-spectrum-analyzer last instock shipping-taxable product-type-simple\"><div class=\"vk_post_imgOuter\" style=\"background-image:url(https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2013\/03\/MSA558_620x620.png)\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa558.html\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2013\/03\/MSA558_620x620-300x300.png\" class=\"vk_post_imgOuter_img card-img-top wp-post-image\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2013\/03\/MSA558_620x620-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2013\/03\/MSA558_620x620-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2013\/03\/MSA558_620x620-600x600.png 600w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2013\/03\/MSA558_620x620-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2013\/03\/MSA558_620x620.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><!-- [ \/.vk_post_imgOuter ] --><div class=\"vk_post_body card-body\"><h5 class=\"vk_post_title card-title\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa558.html\">Handheld Signal Analyzer MSA558<\/a><\/h5><p class=\"vk_post_excerpt card-text\">Almost all of the applications of wireless communication systems are covered.<br \/>\r\nMeasurement frequency : 20kHz to 8.5GHz <\/p><\/div><!-- [ \/.card-body ] --><\/div><!-- [ \/.card ] --><div id=\"post-5786\" class=\"vk_post vk_post-postType-product card card-noborder vk_post-col-xs-12 vk_post-col-sm-6 vk_post-col-md-3 vk_post-col-lg-3 vk_post-col-xl-3 vk_post-col-xxl-3 post-5786 product type-product status-publish has-post-thumbnail product_cat-shop-category-msa500 product_cat-shop-category-handheld-spectrum-analyzer product_tag-tag-handheld-spectrum-analyzer first instock shipping-taxable product-type-simple\"><div class=\"vk_post_imgOuter\" style=\"background-image:url(https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa558e_640x640.png)\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa558e.html\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa558e_640x640-300x300.png\" class=\"vk_post_imgOuter_img card-img-top wp-post-image\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa558e_640x640-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa558e_640x640-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa558e_640x640-600x600.png 600w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa558e_640x640-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa558e_640x640.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><!-- [ \/.vk_post_imgOuter ] --><div class=\"vk_post_body card-body\"><h5 class=\"vk_post_title card-title\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa558e.html\">Handheld Signal Analyzer MSA558E<\/a><\/h5><p class=\"vk_post_excerpt card-text\">This is a model in which EMI measurement function is added to MSA558.<br \/>\r\nMeasurement frequency : 20kHz to 8.5GHz<\/p><\/div><!-- [ \/.card-body ] --><\/div><!-- [ \/.card ] --><\/div><h3 class=\"wp-block-heading\" id=\"vk-htags-928e7bf3-1a25-4753-8ca9-2a166feaed9f\">ETC \/ ITS Spot Electric Field Strength Measurement System ME9200<\/h3><div class=\"wp-block-vk-blocks-select-post-list vk_posts vk_posts-postType-post vk_posts-layout-card-noborder vk_postList\"><div id=\"post-6021\" class=\"vk_post vk_post-postType-product card card-noborder vk_post-col-xs-12 vk_post-col-sm-6 vk_post-col-md-3 vk_post-col-lg-3 vk_post-col-xl-3 vk_post-col-xxl-3 post-1918 post type-post status-publish format-standard has-post-thumbnail hentry category-category-technology tag-technology-etc\"><div class=\"vk_post_imgOuter\" style=\"background-image:url(https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/me9200_640x640.png)\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/etc\/me9200.html\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/me9200_640x640-300x300.png\" class=\"vk_post_imgOuter_img card-img-top wp-post-image\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/me9200_640x640-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/me9200_640x640-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/me9200_640x640-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/me9200_640x640.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><!-- [ \/.vk_post_imgOuter ] --><div class=\"vk_post_body card-body\"><h5 class=\"vk_post_title card-title\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/etc\/me9200.html\">ETC \/ ITS Spot Electric Field Strength Measurement System ME9200<\/a><\/h5><p class=\"vk_post_excerpt card-text\">ME9200 makes possible to measure the electric field strength of the signal radiated from ETC or ITS spot in a short time. With this system, after measuring the electric field strength distribution of the ETC\/ITS spot with operation wave or CW in a short time, the electric field strength graph and the map diagram are created.<\/p><\/div><!-- [ \/.card-body ] --><\/div><!-- [ \/.card ] --><\/div><p><\/p><div class=\"wp-block-vk-blocks-button vk_button vk_button-color-custom vk_button-align-block\"><a href=\"\/eng\/file-download\/technical\/pdf\/speed_signal-eng.pdf\" style=\"background-color:#726756;border:1px solid #726756;color:#fff;\" class=\"vk_button_link btn btn-md btn-block white\" role=\"button\" aria-pressed=\"true\" target=\"_blank\"  rel=\"noopener\"><i class=\"fas vk_button_link_before fa-file-pdf\"><\/i><span class=\"vk_button_link_txt\">Download This Technical Report (PDF) <\/span><\/a><\/div><!--\u6570\u5f0f\u8868\u793a\/MathJax-->\r\n<script>\r\nMathJax = { chtml: { displayAlign: \"left\", }\r\n};\r\n<\/script>\r\n<script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\r\n<script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script><div class=\"wp-block-cover is-light vk_block-margin-xl--margin-top\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-white-background-color has-background-dim\"><\/span><img class=\"wp-block-cover__image-background wp-image-8105\" alt=\"\" src=\"https:\/\/micronix-jp.com\/wp-content\/uploads\/2022\/11\/contact_cta_cover.png\" data-object-fit=\"cover\"\/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\"><p class=\"has-text-align-center has-huge-font-size\"><strong>Please feel free to contact us.<\/strong><\/p>\n\n<p>If you want to verify 5G, customize a radio wave shield box, or need product repair, please do not hesitate to contact us about any small matter.<\/p>\n\n<div class=\"wp-block-vk-blocks-grid-column vk_gridColumn\"><div class=\"row\"><div class=\"wp-block-vk-blocks-grid-column-item vk_gridColumn_item col-12 col-sm-12 col-md-12 col-lg-12 col-xl-12 col-xxl-12\"><div class=\"wp-block-vk-blocks-button vk_button vk_button-color-custom vk_button-align-block is-style-shine\"><a href=\"https:\/\/micronix-jp.com\/english\/contact\/\" class=\"vk_button_link btn has-background has-luminous-vivid-orange-background-color btn-lg btn-block\" role=\"button\" aria-pressed=\"true\" target=\"_blank\" rel=\"noopener\"><div class=\"vk_button_link_caption\"><i class=\"far fa-envelope vk_button_link_before\" aria-hidden=\"true\"><\/i><span class=\"vk_button_link_txt\"><strong>Contact Form<\/strong><\/span><\/div><\/a><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>When measuring the electric field strength by placing a signal analyzer MSA500 series or ETC\/DSRC electric field strength measurement system ME 9200 in a car, the measurement position can be [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8280,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"vkexunit_cta_each_option":"","footnotes":""},"categories":[32],"tags":[80],"class_list":["post-1918","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-category-technology","tag-technology-etc"],"_links":{"self":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/1918","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/comments?post=1918"}],"version-history":[{"count":4,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/1918\/revisions"}],"predecessor-version":[{"id":10347,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/1918\/revisions\/10347"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media\/8280"}],"wp:attachment":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media?parent=1918"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/categories?post=1918"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/tags?post=1918"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}