User manual

Using the PICkit™ 1 Signal Analysis PC Application
 2004 Microchip Technology Inc. DS51476A-page 15
2.4 MODE SELECTION
The Mode selection determines how the Signal Analysis Application will perform
analog-to-digital conversions (ADC) from the 10-bit ADC in the PIC16F684 and how
they will be displayed. There are two mode selections; Real Time and Acquisition, as
shown in Figure 2-4.
FIGURE 2-4: MODE SELECTION
In Real-time mode, data conversions are performed immediately and transmitted to the
PC. The data is displayed on a real-time strip chart.
In Acquisition mode, the data is stored in the serial EEPROMs. After the acquisition
sequence, the data is uploaded to the PC for post processing.
2.4.1 Real-time Mode
Real-time mode performs an ADC on the RC0/AN4 I/O port pin and immediately
transmits the data for display on the PC. The display option for this mode is the Strip
Chart function. The Speed (sps) drop-down menu controls the relative conversion
speed.
To use the Strip Chart function, click on the Strip Chart button. The Strip Chart window
is displayed, as shown in Figure 2-5. To start the conversion process, click Go. Use the
Speed (sps) drop-down menu (Figure 2-9) to control the sample speed.
FIGURE 2-5: STRIP CHART