28119 Parallax Inc, 28119 Datasheet - Page 93

• 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

Running 38kHzInfrared.bs2 Program
' Understanding Signals - 38kHzInfrared.bs2
' Send a single character to the Debug Terminal
' {$STAMP BS2}
' {$PBASIC 2.5}
DO
LOOP
You will see Channel 1 with a bit stream about 1ms long, and Channel 2 will have a low
pulse for about the same time, except it will lag the
because it takes a little while for the IR detector to lock on to the signal, as you can see in
Figure 7-6.
FREQOUT 7,1,38500
PAUSE 20
√
√
√
√
√
Run the program 38kHzInfrared.bs2.
Separate the signals so that Channel 1 is in the lower half of the Plot Area and
Channel 2 is in the upper half near the top.
Slide the Plot Area Indicator bar one division to the right.
Hold one hand in front of the IR LED and detector.
Press the Run / Stop button with the other hand to freeze the signal.
FREQOUT
signal. This lag occurs