The VAX Family is a 16-line asynchronous multiplexer with direct memory access that provides local and remote interconnection between VAX Family PDP-11 and VAX systems and EIA RS-232-C/CCITT V.28 or EIA RS-423-A/CCITT V.10 termi- nals. The VAX Family operates at program-selectable speeds up to 38,400 bits per sec- ond at half- or full-duplex. Actual device speed is dependent on current Digital operating systems and system configuration. VAX Family modern control is available on all 16 lines. Split-speed transmit and receive rates are supported on each line making more efficient use of communications facilities by reducing the software demand for the receive lins. VAX Family-M VAX Family RS-232-C/CCITT V.28 or EIA RS-423-A/CCITT V.10 inter- face with full modern control and DMA. Includes base module only. For system installation, select the appropriate external cables and one of the following cabinet kits: CK-VAX Family-AD For general purpose expander cabinet utilized with the VAX Family 8800, VAX Family, 8650, 8600, 8550, 8500, 8300, 8200, 11/785 and 780, plus the expander cabinet for the VAX-11/750. CK-VAX Family-AE For kernel cab of VAX Family-11/750.