{"product_id":"gould-electronics-communication-board-501-03854-01-0226-504","title":"Gould Electronics Communication Board 501-03854-01","description":"\u003cp\u003eUsed in CNC machine tool control systems manufactured by Gould Electronics, the Communication Board part number 501-03854-01 is a double-sided printed circuit board assembly carrying secondary assembly number 502-03063 (partial). The board is silkscreen-labeled \"COMMUNICATION BD RN5-2\" and carries a revision date of RA 12\/84, indicating manufacture in December 1984. The assembly consists of two interconnected PCB sections joined along a shared edge connector rail, with gold-plated edge connectors on three sides for rack or backplane integration. Visible I\/O designations on the component side silkscreen include labels for Serial Port, Digital I\/O, Communication Port, and I\/O Test points. The board is populated with TTL logic ICs including 74LS series devices, Motorola MC68661PB EPCI communication ICs, and a 4.912 MHz crystal oscillator. Component-side silkscreen designators include IC positions numbered from IC-1 through IC-92. The Gould Electronics logo is visible on the component side. This board is intended for use as a replacement or spare for Gould Electronics CNC control systems utilizing this communication architecture. MPN 501-03854-01 is the primary OEM-assigned identifier as marked on the board silkscreen.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-504\u003c\/p\u003e","brand":"Gould Electronics","offers":[{"title":"Default Title","offer_id":48856355635440,"sku":"m00504","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/717B728F-96D5-488C-89DC-906C1A291BA5.jpg?v=1771619894","url":"https:\/\/mroexchange.com\/products\/gould-electronics-communication-board-501-03854-01-0226-504","provider":"MRO Exchange","version":"1.0","type":"link"}