{"id":1129,"date":"2016-12-13T07:00:57","date_gmt":"2016-12-13T13:00:57","guid":{"rendered":"https:\/\/scadametrics.com\/blog\/?p=1129"},"modified":"2022-10-15T16:01:23","modified_gmt":"2022-10-15T22:01:23","slug":"using-a-bell-202-radio-modem-with-a-desktop-computer","status":"publish","type":"post","link":"https:\/\/scadametrics.com\/blog\/?p=1129","title":{"rendered":"Using a Bell 202 Radio Modem with a Desktop Computer"},"content":{"rendered":"
\"James

Jim ‘Slim’ Mimlitz, SCADAmetrics<\/p><\/div>\n

(2021 Edit: This article only pertains to use of our legacy Bell-202 OEM modem module with a PC.\u00a0Today, the more efficient approach is to simply use our new Model SB.202 Smart Bell 202 Modem<\/strong>, which does not require a device server to handle radio timings.)<\/p>\n

In 2012, SCADAmetrics introduced the B202<\/a><\/strong> \u2014 an Industrial Bell 202 Modem<\/strong> designed for Radio Telemetry Applications<\/strong>. The B202 is designed to provide external, non-proprietary data modulation\/demodulation for a wide range of popular narrowband analog telemetry radios, including models from Ritron, Tecnet\/Maxon, GE\/MDS, RF Neulink, and Calamp.<\/p>\n

\"B202:<\/a>

B202: SCADAmetrics Bell-202 Modem for Telemetry Radios.<\/p><\/div>\n

In many instances, it is desirable to connect a Desktop Computer to a Remote Host using an RS-232 Serial, Bell-202 Radio-Modem Assembly. If the Desktop Computer\u2019s communication software is written specifically to control a Bell-202 Modem, then compatibility should not be a problem.<\/p>\n

However, a common roadblock exists wherein the Desktop Computer\u2019s communication software is written only for a hardwired serial or telephone modem connection. Generally, such limitations do not allow for the RTS flow control required when using a Bell-202 Modem. Fortunately, SCADAmetrics has developed a technique that overcomes this obstacle.<\/p>\n

\"\"<\/a>

Perle IOLAN DS1 Serial Device Server<\/p><\/div>\n

When the Perle<\/a> IOLAN-DS1<\/a><\/strong> Ethernet-based serial device server is utilized as a Desktop Computer\u2019s serial port (instead of a traditional USB-Serial Adapter, or a PCI\/PCIe Serial Adapter), and the B202 Modem is connected to this serial port, then precise RTS pin control \u2013 and therefore PTT (push-to-talk) radio control \u2013 can be achieved to properly communicate using the Radio-Modem Assembly.<\/p>\n

We are pleased to report that we have authored an Application Note that details the steps required to use the B202 with a Desktop Computer with the aid of Perle’s IOLAN DS1 Serial Device Server:\u00a0Link to Application Note<\/a>.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

(2021 Edit: This article only pertains to use of our legacy Bell-202 OEM modem module with a PC.\u00a0Today, the more efficient approach is to simply use our new Model SB.202 Smart Bell 202 Modem, which does not require a device server to handle radio timings.) In 2012, SCADAmetrics introduced the B202 \u2014 an Industrial Bell …<\/span> Read More →<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":1130,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,125,8,5,6],"tags":[127,126,154,158,156,128,155,70,157,21],"class_list":["post-1129","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","category-bell-202-modem","category-general","category-modbusprotocol","category-rockwell-protocols","tag-bell-202","tag-bell-202-modem","tag-desktop-computer","tag-device-server","tag-flow-control","tag-modem","tag-rts-delay","tag-serial-communications","tag-serial-device-server","tag-serial-port"],"_links":{"self":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1129","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1129"}],"version-history":[{"count":5,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1129\/revisions"}],"predecessor-version":[{"id":2417,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1129\/revisions\/2417"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/media\/1130"}],"wp:attachment":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1129"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1129"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}