VT DSO-2820R:200MHz 8~16Bit Multi-function PC USB Oscilloscope Spectrum Analyzer

Description

VT DSO-2820R
Second-Generation 200MSPS 80MHz 8~16Bit Precision PC USB Oscilloscope, Spectrum Analyzer, Multimeter
with a hardware activated Multi-Instrument (Standard) software license
Turn a PC into multiple virtual instruments!
1. Introduction
This is one of the second-generation USB DSOs designed and developed by Virtins Technology. This generation of USB DSOs features Virtins Technology’s unique hardware-based DSP algorithm which enhances the performance and functionality dramatically. When used in conjunction with Multi-Instrument® software, the USB DSO converts any desktop, laptop, or tablet PC into a powerful oscilloscope, spectrum analyzer, multimeter, data logger, signal generator and so forth, all of which work simultaneously.
Feature Highlights
8~16 Bit 200MSPS 80MHz Oscilloscope and Spectrum Analyzer
2 analog input, 1 digital output
Unique hardware based DSP algorithm
Sophisticated trigger function
10 voltage ranges, 1% DC accuracy
Adaptive anti-aliasing filter
Streaming Mode supported
Very small footprint (70 x 24 x111 mm)
A comprehensive suite of time-domain, frequency-domain and time-frequency domain processing and analyses.
Multi-Instrument software can be downloaded from virtins.com for a 21-day fully functional FREE trial using your sound card as the ADC and DAC device
2. Package Contents
1)
VT DSO-2820R unit with a hardware activated Multi-Instrument Standard software license
2)  2
´
100MHz Oscilloscope Probe P2100 with two switchable positions:
´
1,
´
10
3)  USB cable (1.5 m)
4)  CD (contains the copy-protected Multi-Instrument software and VT DSO-2820R driver)
3. VT DSO-2820R Hardware Specifications
Oscilloscope Horizontal (Time) Axis
Real Time Sampling Frequency (f
s
)
Single Analog Channel
200 MHz
Single or Dual Analog Channels
100 MHz, 50 MHz, 25 MHz, 20 MHz, 10 MHz, 5 MHz, 4 MHz,
2 MHz, 1 MHz, 500 kHz, 400 kHz, 200 kHz, 100 kHz,
50 kHz, 40 kHz, 20 kHz, 10 kHz, 5 kHz, 4 kHz, 2 kHz,
1 kHz, 500 Hz, 400 Hz, 200 Hz, 100 Hz, 50 Hz, 40 Hz,
20 Hz, 10 Hz, 5 Hz, 4 Hz, 2 Hz, 1 Hz
Equivalent Sampling Frequency
= [Real Time Sampling Frequency]
´
[Number of Frames Persisted]. Maximum 40 GHz, for repetitive signals whose maximum frequency is less than ¼ of the real time sampling frequency. Not valid for the case of post-trigger.
Buffer Size
Normal Frame Mode
Analog
Single Channel
40000 samples (8 bits)
20000 samples (16 bits)
Dual Channels
20000 samples / channel (8 bits, Non-ALT mode) 10000 samples / channel (16 bits, Non-ALT mode)
40000 samples / channel (8 bits, ALT mode)
20000 samples / channel (16 bits, ALT mode)
Record Mode
(Streaming Mode)
Limited only by hard disk space available.
Maximum sampling frequency for continuous streaming is computer
speed
and software setting dependent and typically 10 MHz
(single channel, 8 bit) in Multi-Instrument.
Roll Mode
(Streaming Mode for Low Frequency Signals)
Limited only by the computer memory available.
Roll Mode is allowed when f
s
£
1MHz and [Record Length]
³
4
´
[Roll Width]. Maximum sampling frequency for continuous streaming is computer
speed
and software setting dependent.
Sweep Time
5 ns ~ 500 s (Non-Streaming Mode)
Sampling Frequency Accuracy
±
50 ppm
Oscilloscope Vertical (Analog) Axes
Number of Channels
2
(i.e. Ch. A and Ch. B)
ADC Bit Resolution
8 Bits
Enhanced ADC Bit Resolution
(available only when Sampling Frequency is less than 100 MHz)
16 Bits
If this option is selected, the effective bit resolution increases from 8 bits to up to 16 bits as the sampling frequency goes down.
(Assuming white noise in the signal)
Sampling Frequency
Effective Bit Resolution
Sampling Frequency
Effective Bit Resolution
³
100 MHz
8 Bits
£
25 MHz
9 Bits
£
6.25 MHz
10 Bits
£
1.563 kHz
11 Bits
£
391 kHz
12 Bits
£
97.7 kHz
13 Bits
£
24.4 kHz
14 Bits
£
6.10 kHz
15 Bits
£
1.526 Hz
16 bits
Bandwidth
f
s
>
50 MHz
80 MHz
f
s
£
50 MHz
8 Bits
No Effective Bit Resolution Enhancement
80 MHz
Effective Bit Resolution Enhancement
15 ~ 25 MHz
16 Bits
Effective Bit Resolution Enhancement
about 0.443 f
s
Voltage Measuring Range
(Full Scale)
±
50 mV,
±
100 mV,
±
200 mV,
±
500 mV,
±
1 V,
±
2 V,
±
5 V,
±
10 V,
±
20 V,
±
50 V
Max. Allowed Voltage
±
100 V
(DC + AC peak), derated above 100kHz
DC Accuracy
±
1%
Coupling Type
AC / DC
Input Isolation
No (Isolation can be achieved through a USB isolator)
Terminal Type
Referenced Single-Ended, BNC
Input Impedance
1 M
W
, 15 pF
Zero Calibration
Through software. Individually done at factory
Gain Calibration
Through software. Individually done at factory
Oscilloscope Trigger
Trigger Detection Method
Digital
Trigger Source
Ch. A, Ch. B, ALT
Trigger Mode
Auto, Normal
, Single, Slow
Trigger Edge
Rising, Falling
Trigger Level
Adjustable within full scale
Pre-Trigger
-100% ~ 0% of
Record Length
Post-Trigger
0 ~ 100% of Record Length
Trigger Frequency Rejection
Nil: No Rejection
HFR: High Frequency Rejection, cut off at 0.11
f
s
NR0: Noise Rejection, hysteresis = 1% of half of full scale
NR1: Noise Rejection, hysteresis = 2% of half of full scale
NR2: Noise Rejection, hysteresis = 4% of half of full scale
NR3: Noise Rejection, hysteresis = 8% of half of full scale
NR4: Noise Rejection, hysteresis = 16% of half of full scale
HN0: HFR + NR0
HN1: HFR + NR1
HN2: HFR + NR2
HN3: HFR + NR3
HN4: HFR + NR4
HNX: selectable HFR + adjustable hysteresis = 0% ~ 25% of half of full scale
Note: The specified hysteresis may be modified internally to ensure [Trigger Level (%)] – [Hysteresis (%)]
³
-100% at rising edge, or [Trigger Level (%)] + [Hysteresis (%)]
£
100%] at falling edge.
Oscilloscope Dynamic Performance (Typical)
THD
f
s
=100 kHz, f=1 kHz, from 2
nd
to 20
th
order, full-scale input:
8 bits (without bit resolution enhancement):
£
-55 dB
8 bits (with bit resolution enhancement):
£
-56 dB
16 bits:
£
-59 dB
IMD (250 Hz + 8 kHz, 4:1)
f
s
=100 kHz, from 2
nd
to 3
rd
order, full-scale input:
8 bits (without bit resolution enhancement):
£
-51 dB
8 bits (with bit resolution enhancement):
£
-52 dB
16 bits:
£
-57 dB
IMD (19 kHz +20 kHz, 1:1)
f
s
=100 kHz, 2
nd
order only, full-scale input:
8 bits (without bit resolution enhancement):
£
-65 dB
8 bits (with bit resolution enhancement):
£
-65 dB
16 bits:
£
-78 dB
SFDR
f
s
=100 kHz, f=1 kHz, full-scale input:
8 bits (without bit resolution enhancement):
³
61 dB
8 bits (with bit resolution enhancement):
³
61 dB
16 bits:
³
62 dB
Crosstalk
£
-45 dB (at the same voltage measuring range for full bandwidth)
Noise
For voltage measuring ranges
±
50 mV and above:
8 bits (without bit resolution enhancement):
£
±
3 counts (
±
1%)
8 bits (with bit resolution enhancement, f
s
=100 kHz):
£
±
2 counts (
±
0.8%)
16 bits (f
s
=100 kHz):
£
±
0.3 8-bit count (
±
0.1%)
Signal Generator General
Number of Channels
1 (digital signal only)
Coupling Type
DC
Output Isolation
No
Terminal Type
Referenced Single-Ended, Probe Calibration Connector
Output Impedance
About 600
W
Overvoltage Protection
±
35 V
Signal Generator
-
Digital (when Signal Generator is not running)
Voltage Range
0 ~ 3.3 V, not adjustable
Output Signal Frequency Accuracy
±
50 ppm
Bandwidth
13 MHz
Rise Time (10% ~ 90%)
< 50 ns
Waveform
Square
Signal Frequency
25 MHz / N, (N=1, 2, 3, ….25000)
MLS
Sampling Frequency
25 MHz / N, (N=1, 2, 3, ….25000)
General
Interface
USB 2.0 High Speed / USB 1.1 Full Speed / USB Isolator
Device Category in Multi-Instrument
ADC Device
VT DAQ 1
DAC Device
Not Applicable
Firmware Upgradable
Yes
Power
Bus powered by USB port, no external power source required.
Power Consumption
Max. 1.5W
Dimensions
111 mm (L)
´
70 mm (W)
´
24 mm (H),  Metal Casing
System Requirement
Windows XP, Vista, 7, 8, 10 or above, 32 bit or 64 bit
Operating Temperature
0
°
C ~50
°
C
4. Introduction of Multi-Instrument (Standard)
Multi-Instrument (Standard) is a powerful PC based multi-function virtual instrument software. It supports a variety of hardware ranging from sound cards which are available in almost all computers to proprietary ADC and DAC hardware such as VT DSO, VT IEPE, VT CAMP, VT RTA, NI DAQmx cards and so on. It consists of a dual trace oscilloscope, a real time spectrum analyzer, a signal generator and a multimeter, and can run them simultaneously.
For a sound card based system, software triggering is supported.  It features a specially designed data acquisition approach, which is able to monitor the input signal continuously without missing any trigger event before a frame of data is collected. It has a very fast screen refresh rate (typically greater than 50 frames per second). It supports sophisticated triggering method including pre-trigger and post-trigger. Both level trigger and differential trigger are supported.
For a non sound card based system, the triggering capability depends on the hardware used. Hardware triggering is supported if the hardware used supports it.  Software triggering is supported if the hardware used supports data streaming.
The software has a multilingual user interface, including English, French, German, Italian, Spanish, Portuguese, Russian, Simplified Chinese, Traditional Chinese, Japanese, and Korean.
It has been widely used in education, scientific research, audio engineering, electronic engineering, medical diagnosis, vibration analysis, etc.
The software can be downloaded from virtins.com for a 21-day fully functional FREE trial using your sound card as the ADC and DAC device.
5. Functions of Multi-Instrument (Standard Version)
A comprehensive range of functions are provided in Multi-Instrument (Standard), including:
(1) Oscilloscope
Oscilloscope Mode: dual-trace waveform, waveform addition, subtraction and multiplication, Lissajous Pattern, transient signal recording, voltmeter. AM, FM, PM Demodulation. Linear and exponential average...
Record Mode: Record data to the hard disk continuously until the recording process is stopped manually or 2 gigabytes of data has been recorded, whichever  is earlier. During the recording process, acquired data will still be analyzed and displayed to keep the screen updated in real time.
Roll Mode: Data displayed in the Oscilloscope will shift left gradually while the newly acquired data are added from the right.
(2) Spectrum Analyzer
RMS amplitude spectrum, relative amplitude spectrum, octave analysis (1/1,1/3,1/6,1/12,1/24, 1/48, 1/96), frequency compensation, frequency weighting (A,B,C,ITU-R 468), moving average smoothing, peak hold, linear average, exponential average, measurement of THD, THD+N, SNR, SINAD, Noise Level, IMD, Bandwidth, Crosstalk, Harmonics, Peaks, and Energy in user defined frequency bands, phase spectrum, auto correlation function, cross correlation function...
(3) Signal Generator
Function generation, multitone generation, arbitrary waveform generation, burst tone generation, MLS generation, DTMF generation, musical scale generation, white noise and pink noise generation, and frequency/amplitude sweep signal generation. Fade In / Fade Out of the output signal, AM, FM, PM modulation...
(4) Multimeter
RMS, dBV, dBu, dBSPL, dB(A), dB(B), dB(C), Frequency Counter, RPM, Counter, Duty Cycle, Frequency/Voltage Conversion, Cycle RMS, Cycle Mean.  The latter seven modes involves a pulse counting process, with the counter trigger level, hysteresis, frequency dividing ratio adjustable.
6. License information and Function Allocation in Multi-Instrument Series
The full package of Multi-Instrument has six levels and five add-on modules/functions.
The six levels are: Sound Card Oscilloscope (listed price US.95), Sound Card Spectrum Analyzer (listed price US.95), Sound Card Signal Generator (listed price US.95), Multi-Instrument Lite (listed price US.95), Multi-Instrument Standard (listed price US.95), Multi-Instrument Pro (listed price US9.95).
The five add-on modules/functions are: Spectrum 3D Plot (listed price US.95), Data Logger (listed price US.95), LCR Meter (listed price US.95), Device Test Plan (listed price US.95), Vibrometer (listed price US.95).
Note: The item here contains one hardware activated license of Multi-Instrument (Standard) without any add-on modules/functions. "Hardware activated" means that the VT DSO-2820R hardware unit must be connected to the computer in order for the software to work under the licensed mode.  Otherwise the software will work in 21-day fully functional trial mode. No softkey (activation code) will be given under the hardware activated license.
Please refer to virtins.com/multi-instrument.shtml for the function allocation matrix for the six levels of Multi-Instrument.
7. Extended use of the Multi-Instrument Software
With the VT DSO-2820R unit connected to the computer, the Multi-Instrument software will run under the licensed mode. In Multi-Instrument, the ADC device and DAC device can be independently selected. For example, you can use the VT DSO-2820R as the ADC device and your computer's sound card as the DAC device, and they can work simultaneously. Or, you can use the sound card for both ADC and DAC.
Note: the test lead (or probe) for sound cards is not included in this package, but you can make the connection by yourself or purchase it from us separately.
Specification for a sound card based system:
Scan Time:                    100µs~500s*
Sampling Rate
*
:             Max. 768 kHz
Bandwidth
*
:                  10Hz~200kHz
Bit Depth
*
:                    8, 16,24
Voltage Range
*
:            Max -1V~1V
Input Channel:               Ch.A, Ch. B
Output Channel:            Ch.A, Ch. B
Trigger Mode:               Auto, Normal, Single, Slow
Trigger Edge:                 Rising, Failing, Differential
Trigger Delay:                Pre-Trigger, Post-Trigger
Trigger Source:              Ch. A, Ch. B
FFT Size:                      128~4194304
Window Functions:        55 types
Window Overlap:          0%~99%
Octave Analysis:            1/1, 1/3, 1/6, 1/12, 1/24, 1/48, 1/96
Frequency Weighting:    A, B, C, ITU-R 468
*
Sound Card dependent
* Computer Memory dependent
For a non sound card based system:
Please refer to the respective hardware manual.
8. System Requirement
PCs, laptops or tablets with
Microsoft Windows XP or later, with a USB port.  Both 32 bit and 64 bit Windows are supported. Screen horizontal resolution is recommended to be equal to or greater than 1024 pixels.
For a sound card based system, 8, 16 or 24 bit Windows compatible sound card is required.
The software also supports NI DAQmx cards such as NI USB 6009.
9. Software Upgrade policy
Software upgrade for the same license level is always FREE. When a new version is available, you can just uninstall your current version, download and re-install the new version, as long as the VT DSO-2820R unit is still supported by the new version.
Software upgrade to a higher level can be purchased from virtins.com. The software license activated by VT DSO-2820R is remotely upgradable.
10. Shipping
We ship worldwide.
The item will be shipped via express mail service within 24 hours after the payment is received. It will take normally about 5~8 days to deliver to you (e.g. USA, UK, Australia, Canada, Hong Kong, Taiwan, Japan, Korea...).  In some specially cases, or special places (e.g. Italy), it may take a little longer time. The shipping and handling charge is fixed at US for all places. Tracking information online will be provided 2 days after shipping.
You MUST provide us your telephone number as required by the courier company to facilitate the delivery!
11. Refund Policy
One year warranty against defective materials and manufacturing defects for all hardware parts inside the package.
Return for malfunctional item is accepted for refund within 7 days after you receive the item.  For full refund, the package must be in the same condition as received with all accessories.  The returned item must be delivered with postage prepaid by the customer.  You must contact us first before you return it. We strongly recommend that you try out the Multi-Instrument software from virtins.com first before you buy it. Please contact us if you are in doubt before you place the order.