Getting Started With The PropScope USB Oscilloscope 32220gettingstartedv10

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Getting Started
with the

USB Oscilloscope, Function Generator,
Logic Analyzer and Spectrum Analyzer

Copyright © Parallax Inc.

PropScope USB Oscilloscope

v1.0 12/3/2009 Page 1 of 6

Your PropScope includes
Two 1x/10x BNC
probes

USB Cable

PropScope DAC card
for DAC/LSA/Trigger

PropScope

PropScope Specifications
•
•
•
•
•

2 input channels
25 Msps maximum sample rate
20 Vpp maximum input range (-10 V to +10 V when DC-coupled)
10-bit input resolution over either the entire 20 Vpp range, or selectable 10, 2,
and 1 Vpp ranges.
1x/10x selectable probes for 200 Vpp maximum input range (-100 V to +100 V
when DC-coupled)

PropScope DAC card specifications
•
•
•
•

8-bit 25 Msps DAC, up to 25Msps with -1.5 to 1.5 and 0 to 5 volt ranges
External trigger input configurable from -10 to 10 volts
Four-bit logic analyzer, up to 25 Msps
Four-bit NTSC/PAL output
Note
The card must be plugged in before starting the PropScope software. When
using the DAC, logic analyzer, or NTSC/PAL outputs, channel 2 will be disabled.
Warning
Do not apply more than +200 or less than -200 VDC to the input of the
PropScope, otherwise permanent damage may occur.

Copyright © Parallax Inc

PropScope USB Oscilloscope

v1.0 12/3/2009 Page 2 of 6

Step 1: Install Software
Download your PropScope software from: http://www.parallax.com/go/propscope and
follow the instructions to install the USB driver and PropScope software.

Step 2: Connect your PropScope

Connect the USB cable
to the PropScope and to
your PC
Connect the PropScope
DAC card to use the
Function Generator,
External Trigger or LSA

Connect the Probes
to your PropScope

Copyright © Parallax Inc

PropScope USB Oscilloscope

v1.0 12/3/2009 Page 3 of 6

Step 3: Measure
Start the PropScope software by clicking on PropScope shortcut on your desktop.
PropScope will start in the Oscilloscope view and show measurements taken by the two
probes- see the next pages for detail on the other views.

Adjust the horizontal
trigger and slider to see
the signal before and
after the trigger

Switch between different views:
oscilloscope, logic analyzer,
analog, and DSO-LSA

Click to Start and Stop
Measurements

Adjust the horizontal
timescale to suit the
speed of your signal

Click in the left
margin to set
the trigger
mode and
level

Set coupling and
vertical coupling
resolution

Drag traces up
and down or
left and right

Control the function
generator

View automatic
measurements

Tips:

-

-

Select the right timescale
Digital oscilloscopes sample the input signal at configurable rates. (The PropScope
samples up to 25 Million times/second) Sampling a signal too slowly will yield artifactsso always look at a new signal with a faster timescale first.
Use a trigger
Click the Trigger tab to configure the trigger to stabilize the signal. You can adjust the
horizontal slider on top of the graph to show data before or after the trigger fired
Use AC/DC mode
If you are not interested in the DC offset of your signal, switch to AC coupling.
Make sure the probe’s 1X/10X switch is correct
Your PropScope comes with two 1X/10X probes. Switch the probe to 10X and select 10X
in the “Tools/Probe” dialog of the PropScope software to measure larger signals.
Get Help when you’re stuck
For more information about the PropScope software controls, choose “Help” from the
menu in the PropScope software.

Copyright © Parallax Inc

PropScope USB Oscilloscope

v1.0 12/3/2009 Page 4 of 6

Logic Analyzer
Use the Logic Analyzer with the IO Expander to measure multiple logic signals.
Select between Bit
and Pattern trigger
modes.

Click to Start
and Stop
Measurements

In Bit mode, click
on a trace label to
select rising or
falling edge trigger
for that bit

Adjust the
horizontal
timescale to
suit the speed
of your signal

In Pattern mode,
click on any
combination of
trace labels to
select between
rise, fall, high, or
low for each bit

Analog View
Use the Analog View to view your signal in XY mode and with the Spectrum Analyzer.
Click to Start and Stop
Measurements
Explore relationships
between your signals
with the x-y graph
Control the function
generator with these
controls

Explore the frequency component of your signal
with the spectrum analyzer. Adjust the timescale
to control the frequencies graphed.

Copyright © Parallax Inc

PropScope USB Oscilloscope

v1.0 12/3/2009 Page 5 of 6

DSO LSA View
Use the DSO LSA View to control both the oscilloscope and logic state analyzer on one
screen.
Oscilloscope view of analog
signals
Adjust timescale
of both graphs

Set Vertical
resolution and
coupling

View
measurements

Logic Analyzer view of digital
signals

PropScope DAC Card Details
RCA output
for TV

Four-bit
logic input,
labeled 3
through 0
and ground

Function generator
outputs configurable
waveforms between
-1.5 to 1.5V and 0 to
5V

Copyright © Parallax Inc

External trigger
input configurable
from –10 to +10V

PropScope USB Oscilloscope

v1.0 12/3/2009 Page 6 of 6



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