The Tektronix 2402A TEKMATE is a portable, compact, low power, AT- and GPIB~488-compatible system. The TEKMATE is ideally suited for applications where 旧M PC software and bus compatibility are required and where low power consumption, small size, and high reliability are critical. The instrument can add data acquisition and control to your system, and can be mounted onto your Tektronix portable oscilloscope. The 2402A has the following features: • 80C286 microprocessor system 16 MHz CPU clock 3 DMA channels - IBM AT compatible Counter/timers and interrupt controllers - IBM PC compatible •1 M-byte dynamic RAM with parity © IBM AT compatible floppy disk drive Two 3.5 inch micro-floppy disk drives 1.44M-byte formatted capacity per drive • Video controller and Interface (Optional) Standard IBM PC monochrome display (MDA 80 characters by 25 rows) Hercules monochrome graphics (720 by 348 pixels) Standard IBM PC color graphics (CGA 620 by 200 pixels,16 colors) IBM Enhanced graphics (EGA 640 by 350 pixels,16 colors) • External I/O ports 2 Serial RS-232C (the COM 1,and COM 2 ports) Centronics® parallel printer port IEEE 488 GPIB Keyboard Hardware reset button Audio speaker Power-on LED indicator • XT expansion bus Supports two full PC expansion cards or two half-cards and 1 full card • Versatile power supply 90-250 VAC, 48-440 Hertz one range input 50 total load Watts available (approximately 24 load Watts available to expansion connectors) 2 A，250 V fuse is internal and located on the power supply circuit board under the power supply shield • Real time and date clock Battery backed up