{"product_id":"giddings-and-lewis-dbpmi-board-501-04119-00-502-03287-00-0226-655","title":"Giddings and Lewis DBPMI Board 501-04119-00 \/ 502-03287-00","description":"\u003cp\u003eThe Giddings and Lewis DBPMI Board, assembly number 501-04119-00 and PCB number 502-03287-00, is a multi-function backplane monitor and interface module used in Giddings and Lewis CNC control systems. The silkscreen designates it a DBPMI Board, and the Giddings and Lewis Electronics logo is not visible on this board. Serial number 517202 is stamped at the lower edge. Voltage monitoring indicators for +5V, +12V, and -12V are labeled along the left edge alongside LED2-1 through LED2-6 status indicators and a RESET pushbutton (PB1-1). A board test point (TP9) and voltage adjust potentiometer (SW1-1) are accessible at the upper left. The board includes an AD580 precision voltage reference (MC1-1), three LM339 quad comparator ICs (IC-2, IC-5, IC-8), a NEC DB253C-2 programmable interval timer (IC-19), an Intel OP8255A-5 programmable peripheral interface (IC-30), and an MB8416A-15L static RAM (IC-55). Additional logic devices include LS164, LS157, LS151, LS138, LS145, LS240, LS257, LS244, LS375, LS374, LS340, LS682, LS32, LS30, LS11, LS04, LS00, LS10, LS90, ALS240, and 7406 open-collector buffer ICs. An EXPANSION BUS connector is labeled at the left edge, with CONN P1 and P2 card-edge finger connectors on the right. Board address jumpers labeled BOARD 0 through 7 and BOARD 8 through 15 are visible at the right center. J2 memory size jumpers are labeled 2K and 8K. Through-hole construction throughout on a multi-layer green PCB with gold-plated edge connectors.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-655\u003c\/p\u003e","brand":"Giddings and Lewis","offers":[{"title":"Default Title","offer_id":48890935148784,"sku":"m00655","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/354D2336-4BE1-450E-8528-0428F3A387CA.jpg?v=1771956120","url":"https:\/\/mroexchange.com\/products\/giddings-and-lewis-dbpmi-board-501-04119-00-502-03287-00-0226-655","provider":"MRO Exchange","version":"1.0","type":"link"}