28014 Parallax Inc, 28014 Datasheet - Page 37

• Manufacturer Part Number: 28014
• Description: OSCILLOSCOPE USB 200KHZ
• Manufacturer: Parallax Inc
• Type: USBr

Specifications of 28014

• Includes: Probes, Software, USB Cable
• Bandwidth: 200kHz
• Channels: Dual
• Display Type: None - Requires Computer and Monitor
• Probe Type: Hook Probes x1 (3)
• Sampling Rate (per Second): 500ks/s
• Voltage - Input, Max: 20V p-p
• Voltage - Supply: 5 VDC, USB Powered
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Input Impedance: -
• Rise Time (typ): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q2119020

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.