{"product_id":"giddings-lewis-servo-board-502-03055-00-0226-545","title":"Giddings \u0026 Lewis Servo Board 502-03055-00","description":"\u003cp\u003eThis listing is for a used Giddings and Lewis Servo Board, part number 502-03055-00, serial number C90735, date code 439708. The OEM nameplate label notes this version is replaced by the 502-03055-01 revision. The board is manufactured by Giddings and Lewis Electronics and carries the Giddings and Lewis logo on the PCB surface.\u003c\/p\u003e\n\n\u003cp\u003eThe 502-03055-00 is a densely populated multi-channel analog servo control board. Labeled servo channels on the board silkscreen include SERVO CHAN B, SERVO CHAN C, and SERVO CHAN D, with D\/A OUT and TP3 test point positions. Key components visible include a DAC80Z precision digital-to-analog converter, an MNDAC80-CBI-V hybrid DAC module, NE5532 and NE5533 dual op-amps, DG508ACJ 8-channel analog multiplexers, TLO82 JFET-input op-amps, LM339 quad comparators, 74LS-series logic ICs (LS240, LS374, LS573, LS640, LS138, LS123, LS20, LS08, LS174, LS00, LS164), MC74F32NDS and MC74F174NDS fast logic, and a Y-1 16.384 MHz crystal oscillator. The board uses yellow tantalum capacitors throughout and carries resistor networks at RN1-2 position. Edge connector P1 and labeled connectors provide backplane and external signal connections.\u003c\/p\u003e\n\n\u003cp\u003eThis board is a discontinued, obsolete component available only through the industrial surplus market. Repaired units are actively listed at significantly higher prices.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-545\u003c\/p\u003e","brand":"Giddings and Lewis","offers":[{"title":"Default Title","offer_id":48856847548656,"sku":"m00545","price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/D7E6EEAC-2226-4A4A-B0FD-178060D488AA.jpg?v=1771630798","url":"https:\/\/mroexchange.com\/products\/giddings-lewis-servo-board-502-03055-00-0226-545","provider":"MRO Exchange","version":"1.0","type":"link"}