70009 Parallax Inc, 70009 Datasheet - Page 24

• Manufacturer Part Number: 70009
• Description: BOOK UNDERSTANDING SIGNALS
• Manufacturer: Parallax Inc
• Type: Signal Analysisr

Specifications of 70009

• Style: Book
• Title: Understanding Signals
• Contents: Guide to Generate, View and Measure Wave Forms
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 70009PAR

Measuring 5 V with PinHigh.bs2 Program
' Understanding Signals - PinHigh.bs2
' Make I/O pin high to demonstrate 5V measurement
' {$STAMP BS2}
' {$PBASIC 2.5}
DO
LOOP
In the OPTAscope Plot Area, you should see a line across the screen one division up
from the blue arrow on the left (Figure 1-17). Your Vertical dial should be set to 5 V per
division. A BASIC Stamp output pin should read about 5 V when it is “driving high”.
HIGH 14
√
√
Set up the OPTAscope to display the signal as shown in Figure 1-16.
Remember, click on and drag the arrow to the left of the Plot Area to set the
trigger voltage.
Run the program PinHigh.bs2.
CH1
CH2
Horizontal Dial
Trigger Source
Trigger Edge
Trigger Mode
Run / Stop Mode
Trigger Voltage
5 V / division
Off
5 ms / division
None
Falling
Auto
Continuous
2 V
Figure 1-16:
Configuring the
OPTAscope to view
high and low
signals