- Category:
- SCM
- Tags:
-
[PPT]
- File Size:
- 347.97kb
- Update:
- 2008-10-13
- Downloads:
- 0 Times
- Uploaded by:
- caoruicslg
Description: Simple digital frequency meter solutions. (B in 1997)
Author and speaker: tian liang (radio department of southeast university, 12 March 2003)
A) task
Design and make a simple frequency meter for display.
(ii) requirements
1. Basic requirements
(1) frequency measurement
A. Measuring range signal: square wave, sine wave
Magnitude: 0.5V ~ 5V [note]
Frequency: 1Hz ~ 1MHz
B. The test error is less than 0.1%
(2) periodic measurement
A. Measuring range signal: square wave, sine wave
Magnitude: 0.5V ~ 5V [note]
Frequency: 1Hz ~ 1MHz
B. The test error is less than 0.1%
3) pulse width measurement
A. Measuring range signal: pulse wave
Magnitude: 0.5V ~ 5V [note]
The pulse width is greater than 100 mu s
B. The test error is less than 0.1%
(4) display decimal number display, display refresh time 1 ~ 10 seconds
Continuous adjustable, the above three kinds of measuring functions are used in different colors
Led instructions.
(5) with the function of self-calibration, the signal frequency is 1MHz.
(6) design and make the stable voltage supply that meets the requirements of this design
File list (Check if you may need any files):
Download