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DPScope - Low-Cost USB Oscilloscopes
(*) Disclaimer: The DPScope II is not intended for high voltage applications. Use proper precautions when
working with high voltages (anything exceeding 24V peak). Yo
u do so at your own risk and we cannot be held
responsible for damage to life or property resulting from such work. Attempt such work ONLY if you have the
necessary knowledge and training. Make sure the probe is set up to the required division ratio before probing.
Never apply any voltage exceeding 24V to the oscilloscope inputs. Note that the peak value of an sinusoidal AC
signal is approx. 40% higher than its rated effective value.
DPScope II Specifications
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Feature
DPScope II
Analog frontend:
 
Number of channels
2
Analog bandwidth
~ 2.5 MHz
Input impedance
1 MOhm || 20 pF
Input coupling
AC coupled, DC coupled
Probe connection
Standard BNC
Usable probe types
Standard 1:1, 1:10 probes
Vertical sensitivity
10 mV/div to 1 V/div (1:1 probe)
100 mV/div to 10 V/div (1:10 probe)
(20 vertical divisions)
Vertical resolution
8 bits (scope mode)
10 bits (datalogger mode)
Vertical center offset
-10 ... +10 divisions
Maximum voltage range
-20V ... 20V (1:1 probe)
-200V ... +200V (1:10 probe) (*)
Probe compensation
yes (2 kHz / 3.3V calibration output)
Gain & Offset compensation
yes, automated software procedure
Digital & Timing:
 
Max. sample rate (scope mode, single shot)
2 MSa/sec
Max. sample rate (scope mode, repetitive signals)
50 MSa/sec
Max. sample rate (datalogger mode)
1 kSa/sec
(direct streaming to hard drive possible)
Timebase settings (scope mode)
0.2 usec/div ... 1 sec/div
Timebase settings (datalogger/roll mode)
10 msec/div ... 1 hr/div
Trigger source
CH1, CH2, auto (free run)
Trigger polarity
rising edge, falling edge, both rising and falling
Trigger noise reject
yes (selectable)
Maximum trigger frequency
~ 1 MHz
Pre-trigger capability (i.e. can show what happened
before the trigger event)
0 - 80 divisions
Post-trigger delay (delayed scan, to look at the
signal long after the trigger event but with high
resolution)
0 - 200 divisions
Record length (normal mode)
800 points/channel
Record length (FFT mode)
1024 points/channel
Record length (datalogger mode)
practically unlimited (data can be logged to file on
harddrive in real time)
Max. screen refresh rate
up to 40+ frames/sec (both channels on)
(sufficiently fast PC required)
Signal Output:
 
Signal generator
300 Hz ... 2 MHz (square wave, 3.3V pk-pk)
Math & Measurements:
 
Real-time FFT
yes
FFT filters
Rectangular, Hanning,
Hamming, Blackman
Averaging
yes (1 / 2 / 5 / 10 / 20 / 50 / 100)
FFT Averaging Methods
magnitude, vector
X-Y mode
yes
Display styles (can be combined)
Points, Vectors (Lines), Infinite Persistence
Fully automated waveform measurements
Level: low, high, mid level, amplitude,
DC average, AC RMS
Time: period, frequency, duty cycle, pos. width,
neg. width, rise time, fall time
Spectrum/distortion measurements
Frequencies of fundamental and harmonics
THD, THD+N, noise
Waveform cursors
yes (horizontal and vertical pairs)
Waveform export (e.g. to Excel)
yes (CSV format)
Save/restore of scope setups
yes
General:
 
PC connection
USB, 1 Mbaud
PC software
Windows XP (SP3), Vista, 7, 8
Minimum screen size
1024 x 768 pixel
Power supply
through USB (5V / ~100 mA)
Approx. size (in enclosure)
4.5" x 2.6" x 1.2"
114 mm x 66 mm x 31 mm