Check the listing for details. Keithley Metrabus PDMA-16 Parallel Digital Interface Board ISA Bus DMA-16. Condition: Used. Listed at 79.99 USD. You are bidding on a used working Keithley Metrabus PDMA-16 Parallel Digital Interface Board. It ia an ISA Bus Card, s/n 038378. The PDMA-15 high-speed, labit, paralleldigital interface card with DMA (Direct Memory Access) plugs directly into an expansion slot of the IBM PC/XT/AT and compatible machines, including the AT&T 63300. All digital 1/0 feeds through a 37-pin, D-type, male connector that projects through the rear mounting plate. Typical applications for the PDMA-16 are as follows: Interface for high-speed digital peripherals. Arbitrary waveform generation with an external D/A converter. High-speed A/D conversion with an external A/D converter. High-speed digital stimulus for testing and control. Fast block transfer of data between computers. Interrupt or DMA driven background data transfers. High sink current lTL digital 1/0 (24mA sink current). Data line monitoring. Transient generation and monitoring. Good Luck in Bidding!