The frequency can be varied from less than 1Hz to over 500KHz. The amplitude can be a few millivolts to a few volts. This VP implements a real time clock that keeps a 16-bit milliseconds count, and has the option for full time clock capabilities, including seconds, minutes, hours, and days. This application will create a bar graph display, similar to a signal strength meter on a stereo. By modulating the signal to the LED's, it is possible to create an analog effect on a discete, digital display.
Source code is currently available only by request .
This VP provides a simple FSK modulation scheme. This routine provides a 1200 baud , Phase-coherent FSK generation with minimal external circuitry. Designed to be compliant with the Bell-202 specification. This VP provides a simple FSK modulation scheme. This routine provides a 1200 baud , Phase-coherent FSK generation with minimal external circuitry.