{"product_id":"burr-brown-ldm70-fully-isolated-limited-distance-modem","title":"Burr-Brown LDM70 Fully Isolated Limited Distance Modem","description":"\u003cdiv\u003e\u003cp\u003eThe Burr-Brown LDM70 is a fully isolated limited-distance modem that separates the host equipment from field wiring using optical couplers and a DC-DC converter, a design described by the manufacturer as providing complete isolation to prevent ground loops in rugged environments. It is powered from a 12 VAC supply (approximately 120 mA) and is specified with DC or AC input power, reflecting Burr-Brown's older implementation for field reliability. The modem offers a four-wire data link with DTR\/RLSD handshake support and a maximum data rate of 57.6 kbaud, enabling reliable synchronous\/asynchronous serial signaling over short distances. At the rated baud, the LDM70's practical distance is specified as up to 12 meters, making it suitable for controller-to-sensor connections within a single facility. As part of Burr-Brown's limited-distance modem line, the LDM70 emphasizes complete isolation rather than partial protection, distinguishing it from models that isolate only the receiver side.\u003c\/p\u003e\u003c\/div\u003e","brand":"Burr","offers":[{"title":"New","offer_id":51677471998254,"sku":null,"price":290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_e6893fb2-244e-475f-97c9-52b1230994e8.jpg?v=1769563433","url":"https:\/\/plgautomation.com\/products\/burr-brown-ldm70-fully-isolated-limited-distance-modem","provider":"PLG Automation ","version":"1.0","type":"link"}