描述 Description

DMS-40PC Series, 4? Digit, LED Display, Miniature DPM's are fully self-contained, component-like, plug-in meters that provide scientific-grade accuracy (typically ±2 counts or ±0.005% of full scale) and outstanding reliability at a very affordable price.
Within its miniature (2.17\" x 0.92\" x 0.56\"), epoxy-encapsulated package, each meter contains a precision reference circuit; a high-resolution, autozeroing, factory calibrated A/D converter; and a large (0.52\"/13.2mm), easy-to-read, LED display. LED's are available in red, yellow and green colors. Red LED's are also offered in high-intensity or low-power versions.
The versatile design of the DMS-40PC Series assures trouble-free installation and long-term operation. Differential input voltage ranges include ±2V, ±20V and ±200V. Input impedance is a minimum 800k?. Non-inverting inputs are overvoltage protected to ±250V, and CMRR is typically 86dB (dc to 60Hz).
The DMS-40PC's epoxy-encapsulated package has an integral bezel and color filter. The moisture and vibration-proof package is extremely rugged and well suited for harsh environments and extended temperatures. Devices are fully specified for 0 to +50°C operation.
All models operate from a single +5V supply and typically consume 500mW. Low power models, whose display is just as bright as standard models, typically consume 175mW. DISPLAY TEST and HOLD functions are standard on each meter, and a complete set of BCD outputs are optional for sending data to CPU's or remote displays.

特性 Features

? Precision, autozeroing, factory calibrated A/D converter
? Scientific-grade accuracy, ±2 counts
? Miniature size: 2.17\" x 0.92\" x 0.56\" 55mm x 23mm x 14mm
? Large (0.52\"/13.2mm) LED display
? Choice of red, green or yellow colors
? High-intensity or low-power red LED's optional
? Single +5V supply (175mW for low power models)
? Epoxy-encapsulated, 12-pin DIP with built-in color filter and bezel
? 3 differential input voltage ranges
? DISPLAY HOLD and TEST functions
? Optional BCD data outputs for CPU interface
? 0 to +50°C temperature range?