28119 Parallax Inc, 28119 Datasheet - Page 26

• Manufacturer Part Number: 28119
• Description: KIT UNDERSTANDING SIGNALS
• Manufacturer: Parallax Inc

Specifications of 28119

• Lead Free Status: Contains lead
• Accessory Type: Oscilloscope
• Interface Type: USB
• For Use With/related Products: BASIC Stamp® 2 and Board of Education
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

ACTIVITY #2: USING THE HORIZONTAL DIAL AND EDGE TRIGGERING
This activity will demonstrate how to use the OPTAscope’s Horizontal dial to display
different periods of a signal, and how to trigger on a rising or falling edge of a signal. The
parts required and electronic circuit is the same as in the prior Activity.
Configuring the OPTAscope Software
Toggling High and Low with the ToggleIO.bs2 Program
' Understanding Signals - TOGGLEIO.bs2
' Toggle P14 to demonstrate time period measurements
' {$STAMP BS2}
' {$PBASIC 2.5}
DO
LOOP
TOGGLE 14
PAUSE 10
√
√
Set up the OPTAscope to display the signal as shown in Figure 1-18 .
Program the BASIC Stamp with the program ToggleIO.bs2.
CH1
CH2
Horizontal Dial
Trigger Source
Trigger Edge
Trigger Mode
Run / Stop Mode
Trigger Voltage
2 V / division
Off
5 ms / division
Channel 1
Rising
Auto
Continuous
2 V
Figure 1-18:
Configuration for
OPTAscope to
trigger a signal from
ToggleIO.bs2
program