Datasheet > MB203A20V

MB203A20V

更新时间： 2024-02-02 13:38:02

品牌	Logo	应用领域
先进线性 - ALD		/
页数	文件大小	规格书
3页	76K
描述
Single Board Precision DVM with direct Character Display Module Driver

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数据手册

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MB203A20V 数据手册

MB203A2V/MB203A20V

Single Board Precision DVM with direct Character Display Module Driver

The ALD MB203 is a precision +/-5½-digit Digital Voltmeter (DVM) printed circuit board that contains the

ALD500R/ALD523D A/D Converter – Display Module Controller chipset. It features direct 2 x 16 Character

Display Module interface, calibrated analog input (w/scalable input ranges), and digital circuitry to communicate

with PC or other microprocessors. It is designed to be used as a stand-alone, embedded system component in a

variety of applications including digital panel meters, customized instrumentation displays, temperature monitoring,

high resolution DVM’s, weigh scales and others. Direct Full-scale analog input range is +/-2.00000V DC with a

linearity of 0.005%. ALD's 18-bit plus sign integrating dual-slope analog processor (ALD500) functions as the

input device and the ALD523D microprocessor IC implements the digital conversion, control mode and I/O

functions for interfacing with a variety of LCD/VFD multi-line Character Display Modules. In addition, the MB203

also drives and manages a 2x16 LCD or VFD Character Display Module.

The MB203 supports three optional Mode versions, each populated with different components and configurations:

Mode A – calibrated reference mode, used primarily for measurements against a calibrated reference

voltage, typically required in precision voltmeter applications. Mode A is the default version of MB203A.

Mode B – ratio-metric mode, intended for measurements against a ratio-metric reference voltage, such as

those required in weigh scale applications. Mode B is a simple application specific adaptation of the

standard MB203A.

Mode C – Display only mode, used for display applications and can be programmed to be compatible with

most industry standard serial binary input data formats – up to 31 serial bits plus sign bit. Mode C is a

simple application specific adaptation of the standard MB203A.

The MB203 board has a provision for PC interface (DB25), BASIC interface modules, and input resistor divider

network for input scaling. Optional MS-DOS Software (P/N - MBCDROM) is also available for user setup and

calibration. Only one copy of the software is necessary, regardless of the number of boards in use. Inputs are single

ended or optionally fully differential, and features automatic zero and automatic input polarity detection. There are

also optional socket/footprints for input pre-amplifier and 2-input differential input analog switch. A DB25

connector is provided on-board, to conveniently interconnect the MB203 to a personal computer (PC) via the

parallel printer port for initial setup and calibration. Standard PC software is included to configure the ALD523D

digital controller chip and establish input scaling and user-defined alphanumeric "Title and Unit fields" for the

display module, which are then uploaded and stored in the EEPROM on the MB203. Once initial set up and

calibration is completed, the MB203 board only requires a single +5V DC power supply to operate.

Hardware and Software Features

User switch-selectable Display Ranges with pre-programmed Unit fields.

Measurement Range: +/-2.00000V DC direct input.

(Other ranges are user configurable and scalable, using both hardware and software scaling)

All solid-state construction.

User selectable +/-3½ to +/-6½ digits.

Differential analog inputs with auto-polarity and auto-zero.

User configurable software and hardware parameters.

Calibration for positive and/or negative inputs.

Smart Input Filtering (Sample Averaging) selection for noise reduction and accurate displays.

Optional MS-DOS software for user operation, setup, and calibration is sold separately.

MB203

www.aldinc.com

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与MB203A20V相关器件

型号	品牌	获取价格	描述	数据表
MB203A2V	ALD	获取价格	Single Board Precision DVM with direct Character Display Module Driver
MB203LCD	ALD	获取价格	16 x 2 LCD Character Display Module for the MB203 module board
MB204	MICROSEMI	获取价格	RECTIFIERS
MB2-040P-(709)	AMPHENOL	获取价格	Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, Solder Terminal,
MB2-040W-(710)	AMPHENOL	获取价格	Board Connector, 40 Contact(s), 2 Row(s), Female, Straight, Wire Wrap Terminal,
MB2-044P-(709)	AMPHENOL	获取价格	Board Connector, 44 Contact(s), 2 Row(s), Female, Straight, Solder Terminal,
MB2-044Q-(710)	AMPHENOL	获取价格	Board Connector, 44 Contact(s), 2 Row(s), Female, Straight, Wire Wrap Terminal,
MB2-044Q-(755)	AMPHENOL	获取价格	Board Connector, 44 Contact(s), 2 Row(s), Female, Straight, Wire Wrap Terminal,
MB2-044W-(710)	AMPHENOL	获取价格	Board Connector, 44 Contact(s), 2 Row(s), Female, Straight, Wire Wrap Terminal,
MB2048D-05ERW	MPD	获取价格	Low Cost, 1 x 2 Inch 20W, 2:1 Input Range DC/DC Con vert ers

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