28119 Parallax Inc, 28119 Datasheet - Page 37

• 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

Measuring the Servo Pulse Widths with ServoCentering.bs2
' Understanding Signals - ServoCentering.bs2
' Demonstrate a continuous pulse width for servo control
' {$STAMP BS2}
' {$PBASIC 2.5}
DO
LOOP
Each loop includes a short pulse of 1.5 ms followed by a 20 ms delay (Figure 2-7).
PULSOUT 14, 750
PAUSE 20
√
√
Run the program ServoCentering.bs2.
Under the Cursors tab slide the Cursor Settings switch to Paired Bars . Place the red
and blue vertical cursors on either side of the pulse to measure the width.
' 1.5 ms pulse
' 20 ms pause
Figure 2-7:
Servo
centering
pulses.