AVT449 A

The presented module is a three-functional measuring device that allows operation in one of three modes: as a voltmeter, pulse counter or display of numerical data received from the serial port. The main assumption when choosing the elements was to minimize the current consumed. The liquid crystal display was used as the reading field and its operation and measurements are performed by the MSP430F435 microcontroller. The processor has an A / C converter with a resolution of 12 bits. This allows you to take measurements with a resolution of 1 mV, or three decimal places. In the counter mode, there are two inputs for counting up and down, and a reset input. The mode of cooperation with the computer allows displaying set values (in the range -999 to 9999)

The device is especially recommended in the electrical equipment workshop, in the service and industry

Selected parameters:

• functions: voltage measurement, pulse counter, display of numerical data received from the serial port
• reading field - LCD, four digits
• basic voltage measurement range 0-2.5 V
• counting range -999 to 9999
• maximum frequency of the input signal (rectangle with 50% fill) - 10 kHz
• the counting range in the RS232 -999 port reading mode to 9999
• power supply - 3 V
• printed circuit board and documentation included
  
  A detailed description in
  EP 10/05