digi-tech QC-1936 User manual
100MHz Dual Channel Oscilloscope
with Digital Storage
QC-1936
User Manual
Contents
Contents.........................................................................................................................................i
Safety Tips ....................................................................................................................................1
General Safety Summary .................................................................................................................... 1
Safety Terms and Symbols.................................................................................................................. 2
Product Scrapping............................................................................................................................... 2
Brief Introduction to QC1936............................................................................................................... 3
Chapter 1 Introduction.............................................................................................................4
1.1 Accidence of front panel and the user interface....................................................................... 1
1.1.1 Front Panel....................................................................................................................... 1
1.1.2 User Interface................................................................................................................... 2
1.2 Functional Check...................................................................................................................... 3
1.2.1 Power on the oscilloscope................................................................................................ 3
1.2.2 Connect the oscilloscope.................................................................................................. 3
1.2.3 Observe the waveform...................................................................................................... 4
1.3 Probe Examination................................................................................................................... 4
1.3.1 Safety................................................................................................................................ 4
1.3.2 Use of Probe Check Wizard ............................................................................................. 5
1.3.3 Manual Probe Compensation........................................................................................... 5
1.3.4 Probe Attenuation Setting................................................................................................. 6
1.4 Self Calibration......................................................................................................................... 6
Chapter 2 Main Feature Description .......................................................................................7
2.1 Menu and control keys............................................................................................................. 7
2.2 Multi-functional Knobs and Buttons.......................................................................................... 8
2.3 Signal Connectors.................................................................................................................... 8
2.4 Oscilloscope Setup................................................................................................................... 9
2.5 Default setups .......................................................................................................................... 9
2.6 Horizontal System...................................................................................................................11
2.6.1 Horizontal control knob................................................................................................... 12
2.6.2 Display Scan mode......................................................................................................... 14
2.7 Vertical System....................................................................................................................... 15
2.7.1 Vertical Controls.............................................................................................................. 15
2.7.2 Math FFT........................................................................................................................ 16
2.8 Trigger System....................................................................................................................... 22
2.8.1 Trigger Controls.............................................................................................................. 23
2.9 Save/Recall............................................................................................................................ 29
2.10 Display System....................................................................................................................... 31
2.10.1 XY Format....................................................................................................................... 32
2.11 Measure System .................................................................................................................... 32
2.11.1 Scale measurement........................................................................................................ 32
2.11.2 Cursor measurement...................................................................................................... 32
2.11.3 Measurement.................................................................................................................. 35
2.12 Acquisition System................................................................................................................. 37
2.13 UTILITY System..................................................................................................................... 39
2.13.1 Firmware Update............................................................................................................ 39
2.13.2 Self Calibration ............................................................................................................... 40
2.13.3 Keypad Beep Control...................................................................................................... 40
2.13.4 Language........................................................................................................................ 40
2.13.5 GUI Color Setting............................................................................................................ 40
2.13.6 Time Setting.................................................................................................................... 40
2.13.7 System Status................................................................................................................. 40
2.13.8 Pass/fail.......................................................................................................................... 40
2.13.9 Recorder......................................................................................................................... 42
2.13.10 Filter............................................................................................................................ 43
2.13.11 Wave........................................................................................................................... 43
2.13.12 DDS............................................................................................................................. 43
2.13.13 DVM............................................................................................................................ 44
2.14 Help System........................................................................................................................... 44
2.15 Fast Action Buttons ................................................................................................................ 45
2.15.1 Autoset............................................................................................................................ 45
2.16 Waveform Generator.............................................................................................................. 47
2.16.1 Set Wave Type and Parameters..................................................................................... 47
2.16.2 Edit Arbitrary Waveform.................................................................................................. 47
2.16.3 Output Arbitrary Waveform............................................................................................. 49
2.17 Power Amplifier(Optional)....................................................................................................... 50
Chapter 3 Application Examples...........................................................................................51
3.1 Example 1: Taking Simple Measurements............................................................................. 53
3.2 Example 2: Taking Cursor Measurements............................................................................. 54
3.3 Example 3: Analyzing Input Signals to Eliminate Random Noise.......................................... 57
3.4 Example 4: Capturing Single-shot Signal............................................................................... 59
3.5 Example 5: Using X-Y Mode.................................................................................................. 59
3.6 Example 6: Triggering on Pulse Width................................................................................... 61
3.7 Example 7: Triggering on Video Signal.................................................................................. 62
3.8 Example 8: Using Slope Trigger to Capture Particular Slope Signal..................................... 63
3.9 Example 9: Using Overtime Trigger to Measure Long Pulse Signal...................................... 64
3.10 Example 10: Using Math Functions to Analyze Waveforms................................................... 65
3.11 Example 11: Measuring Data Propagation Delay .................................................................. 66
Chapter 4 Troubleshooting....................................................................................................68
4.1 Problem Settlement................................................................................................................ 68
Chapter 5 Specifications........................................................................................................69
5.1 Technical Specifications ......................................................................................................... 69
5.2 Accessories............................................................................................................................ 75
5.3 Open Source Information....................................................................................................... 75
License: GPLV2 See Appendix B................................................................................................ 75
Chapter 6 General Care and Cleaning ..................................................................................76
6.1 General Care.......................................................................................................................... 76
6.2 Cleaning................................................................................................................................. 76
Appendix A Harmful and Poisonous Substances or Elements ..............................................77
Appendix B..................................................................................................................................78
GNU GENERAL PUBLIC LICENSE ............................................................................................78
Version 2, June 1991 ..................................................................................................................78
Safety Tips
General Safety Summary
Read the following safety precautions to avoid injury and prevent damage to this product or any
products connected to it. To evade potential hazards, use this product only as specified.
Only qualified personnel should perform maintenance.
Avoid fire or personal injury.
Use suitable power cord. Use only the power cord specified for this product and certified for the
country of use.
Connect and disconnect properly. Connect a probe with the oscilloscope before it is connected
to measured circuits; disconnect the probe from the oscilloscope after it is disconnected from
measured circuits.
Ground the product. This product is grounded through the grounding conductor of the power
cord. To avoid electric shock, the grounding conductor must be connected to earth ground. Before
making connections to the input or output terminals of the product, ensure that the product is
properly grounded.
Connect the probe in a right way. The probe ground lead is at ground potential. Do not connect
the ground lead to an elevated voltage.
Check all terminal ratings. To avoid fire or shock hazard, check all ratings and markings on the
product. Refer to the product manual for detailed information about ratings before making
connections to the product.
Do not operate without covers. Do not operate this product with covers or panels removed.
Avoid exposed circuitry. Do not touch exposed connections and components when power is
present.
Do not operate with suspected failures. If you suspect there is damage to this product, have it
inspected by qualified service personnel.
Assure good ventilation.
Do not operate in wet/damp environments.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
Safety Terms and Symbols
Terms on Product
The following terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the marking.
WARNING indicates an injury hazard not immediately accessible as you read the marking.
CAUTION indicates a possible hazard to this product or other property.
Symbols on Product
The following symbols may appear on the product:
Product Scrapping
Device Recycling
We need extract and utilize natural resources to produce this device. If you do not reclaim the
device in a proper way, some substances it contains may become harmful or poisonous to
environments or human bodies. To avoid them being released outside and to minimize the waste
of natural resources, we suggest you reasonably call back this device to ensure proper recovery
and recycling of most materials within it.
Mains
Disconnected
OFF (Power)
Mains
Connected
ON (Power)
High Voltage
Protective
Ground
(Earth)
Terminal
Measurement
Ground
Terminal
CAUTION
Refer to Manual
Measurement
Input Terminal
Brief Introduction to QC1936
QC1936 oscilloscope’s bandwidth is 100MHz, it provides the real-time and equivalent sample
rates respectively up to 1GSa/s and 25GSa/s. In addition, they have 7 inch color TFT LCD as well
as WINDOWS-style interfaces and menus for easy operation.
What’s more, the plenty menu information and the easy-to-operate buttons allow you to gain
information as much as possible in measurement; the multifunctional knobs and the powerful
shortcut keys help you save a lot of time in operation; the Autoset function lets you detect sine and
square waves automatically; the Probe Check Wizard guides you to adjust the probe
compensation and set the Probe option attenuation factor. By using the three methods the
oscilloscope provides (context-sensitive, hyperlinks, and an index), you may master all operations
on the device in quite a short time so as to greatly improve your efficiency in production and
development.
Model
Channels
Bandwidth
Sample Rate
LCD
QC1936
2
100MHz
1GS/s
7 inch color
Chapter 1Introduction
Accidence of front panel and the user interface
Functional Check
Probe Examination
Self Calibration
QC1936 Digital Storage Oscilloscope 1
1.1 Accidence of front panel and the user interface
This section will make you understand the front operation panel of this series of digital oscilloscope
at first before use.
1.1.1 Front Panel
The content below simply describes and introduces the front panel and the back part of this series
of digital oscilloscope so that you can get familiar with this series of digital oscilloscope well within
the shortest time.
Figure 1-1 Figure of Front Panel
QC1936 Digital Storage Oscilloscope 2
1.1.2 User Interface
1. Window displays waveform.
2. Display Format:
3. Acquisition Mode: Normal, Peak Detect orAverage
4. Trigger Status:
The oscilloscope is acquiring pretriggered data.
All pretriggered data have been acquired and the oscilloscope is ready to accept a trigger.
TThe oscilloscope has detected a trigger and is acquiring the posttrigger information.
The oscilloscope works in auto mode and is acquiring waveforms in the absence of triggers.
The oscilloscope is acquiring and displaying waveform data continuously in scan mode.
●The oscilloscope has stopped acquiring waveform data.
S The oscilloscope has finished a single sequence acquisition.
5. Tool Icon:
: If this icon lights up, it means the keyboard of the oscilloscope is locked by the host computer
via USB control.
: If this icon lights up, it means the USB disk has been connected.
: YT
: Vectors
: Gray indicates auto persistence; Green means persistence display is enabled. When
the icon is set to green, the time for persistence display will be shown behind it.
: XY
:Dots
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