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Condition: Photos reflect the item’s current condition and details. If the item arrives in a condition that differs from what is shown or described, it may be eligible for return or refund. Please review our product condition guide prior to purchasing.
Stock #:
The PCB assembly marked 501-04309-01 is a Dual Servo SBX board, revision 1, dated 3/88 per the silkscreen on the component side. A secondary PCB identifier, 502-03423-01, is also printed on the board and may represent an assembly or schematic reference number. The board is a full-length, multi-layer design populated with a dense array of through-hole integrated circuits including Harris CMOS logic, National Semiconductor HC-series logic, and a DAC811AH digital-to-analog converter. A DALE crystal oscillator marked XO-43B at 16.384 MHz is mounted on the component side, and a gold-lidded ceramic IC package is visible near the oscillator. The board features a card-edge connector on one end and a 40-pin ribbon cable connector populated with a blue IDC header. The designation "DUAL SERVO SBX" indicates the board is intended for dual-axis servo interface functions within a CNC or industrial automation control system. The assembly number 501-04309-01 is the primary market-recognized identifier for this board. Revision 1 is silkscreened directly on the PCB. The manufacturer is not identified by visible logo or marking on either side of the board.
