Rigol DS1052E user guide: Trigger Key points

Trigger Key points

1. Trigger Source: Trigger can occur from several sources: Input channels (CH1 and CH2), AC Line, Ext.

   • CH1 or CH2: It is the most commonly used trigger source. The channel works when selected as a trigger source whatever displayed or not.
   • Ext Trig: The instrument can be triggered from a third source while acquiring data from CH1 and CH2. For example, to trigger from an external clock or with a signal from another part of the test circuit. The Ext trigger sources use an external trigger signal connected to the EXT TRIG connector. Ext uses the signal directly; it has a trigger level range of -1.2V to +1.2V.
   • AC Line: AC power can be used to display signals related to the power line frequency, such as lighting equipment and power supply devices. The oscilloscope gets triggered on its AC power input; an AC trigger signal is not required. When AC Line is selected as trigger source, the oscilloscope automatically set coupling to DC, set trigger level to 0V.

2. Sweep Mode: The sweep mode determines how the oscilloscope behaves in the absence of a trigger event. The oscilloscope provides three trigger modes: Auto, Normal, and Single.

   • Auto: This sweep mode allows the oscilloscope to acquire waveforms even when it does not detect a trigger condition. If no trigger condition occurs while the oscilloscope is waiting for a specific period (as determined by the time-base setting), it will force itself to trigger.

When forcing invalid triggers, the oscilloscope cannot synchronize the waveform, and the waveform seems to roll across the display. If valid triggers occur, the display becomes stable on the screen.

Any factor results in the un-stability of waveforms can be detected by Auto Trigger, such as the output of Power supply.

NOTE: When horizontal control is set under 50 ms/div, Auto mode allows the oscilloscope not to capture trigger signal.

• Normal: The Normal mode allows the oscilloscope to acquire a waveform only when it is triggered. If no trigger occurs, the oscilloscope keeps waiting, and the

previous waveform, if any, will remain on the display.

• Single: In Single mode, after pressing the RUN/STOP key, the oscilloscope waits for trigger. While the trigger occurs, the oscilloscope acquires one waveform then stop.

3. Coupling: Trigger coupling determines which signal component passing to the trigger circuit. Coupling types include AC, DC, LF Reject and HF Reject.

• AC: AC coupling blocks DC components and attenuates the signal below 10Hz.
• DC: DC coupling passes both AC and DC components.
• LF Reject: LF Reject coupling blocks DC component, and attenuates all signal with a frequency lower than 8 kHz.
• HF Reject: HF Reject coupling attenuates all signals with a frequency higher than 150 kHz.

4. Pre-trigger/delayed trigger: The data collected before and after trigger. The trigger position is typically set at the horizontal center of the screen. In the full-screen display the 6div data of pre-trigger and delayed trigger can be surveyed. More data of pre-trigger and 1s delayed trigger can be surveyed by adjusting the horizontal POSITION knob.

This feature is very useful to study the events that led up to the trigger point. Everything to the right of the trigger point is called post-trigger information. The delay range (pre-trigger and post-trigger information) depends on the sweep speed selected.

5. Adjustable trigger sensitivity: To avoid the influence of noise from the physical world, and get the stable trigger, the trigger circuit has adopted Stickiness. In DS1000E, DS1000D series, the stickiness is adjustable from 0.1div-1.0div, which means when it sets to 1.0div, the trigger circuit will not affect any signal with peak-peak amplitude less than 1.0div, so as to avoid the influence of the noise.

To Set up the Sampling System

Acquire shows the menu button for the acquire system on the front panel.

Figure 2- 67 Acquire setup button

Press the Acquire button, the interface menu as follows:

Figure 2- 68 Table 2- 42 The Acquire menu

NOTE$^{[1]}$: This function is used in “Average Acquisition”; NOTE $^{[2]}$: This function is used in “Real Time” sampling.

The waveform display will be different when selecting different acquisition and sampling:

Select Real-time acquisition to observe the single-shot or pulse signals. Select Equ-Time to observe high frequency repetitive signals. To reduce the displayed random noise, select Average Acquisition. And this mode would make the screen refresh slower. To Avoid signal aliasing, select Peak Detect Acquisition.

The waveform displayed on the screen will change in conjunction with the setting of Acquire menu.

Figure 2- 69 Signal that contains noise, and without average sampling

Figure 2- 70 Display signal after average sampling

Figure 2- 71 Signal without Peak Detect Acquisition

Figure 2- 72 Signal with Peak Detect Acquisition

Stop Acquisition: When the scope is acquiring waveforms, the waveforms is in a live status; when acquisition is stopped, frozen waveform will be displayed, the position and scale can still be adjusted by vertical control and horizontal control.

Key Points

Real-time Sampling: The oscilloscope has Real-time sampling rate up to 1GSa/s. At the time base 50ns or faster, the oscilloscopes use the sine(x)/x interpolation to expand the horizontal time base.

Equivalent Sampling: Known as Repetitive sampling to get up to 40ps of horizontal resolution (equivalent 25Gsa/s). This mode is good for observing repetitive signals, and it is not recommended for single-shot or pulse.

Normal Acquisition: Oscilloscope acquires signal by equal time interval.

Average Acquisition: Apply averaging to your signal to remove uncorrelated noise and improve measurement accuracy. Reduces random or uncorrelated noise in the signal display. The averaged waveform is a running average over a specified number of acquisitions from 2 to 256.

Peak Detect Acquisition: Peak Detect mode captures the maximum and minimum values of a signal. Finds highest and lowest record points over many acquisitions.

To Set up the Display System

Display shows the menu button for the display system on the front panel.

Display setup button Figure 2- 73 Display setup button

Press the Display button to pop up the menu for the settings of the display system.

Figure 2- 74 Table 2- 43 The Display menu (Page 1/2)

Figure 2-75 Table 2-44 The Display menu (Page 2/2)

Key points:

1. Display type: Display type includes Vector and Dot. In vectors type, the oscilloscopes connect dots through digital interpolation including both linearity and sin(x)/x. Sin(x)/x interpolation is suitable for Real-time sampling and will be more effective at 50ns or faster time base.

2. Refresh rate: It is an important performance of digital oscilloscopes. It means the number of display refreshing per second and it will affect the ability to observe signal.

Adjusting waveform intensity

Default setup of multi-function knob (□□□) is adjusting waveform intensity.

To Store and Recall

Storage shows the menu button for the storage system on the front panel.

Figure 2- 76 Storage setup button

Press the Storage button to show the menu for the settings of the storage system. Waveforms and setups can be stored in and recalled from, both internal memory and external memory. The waveform file, setup file, bitmap and CSV file in external memory can be created and deleted (Note: internal file can be deleted or overwritten). System supports English/Chinese key in.

Waveform and setup, the menu as following:

Figure 2- 77 Table 2- 45 The Storage menu (For Waveform and Setups)

Figure 2-78 Table 2-46 The Storage menu (For Bitmap)

Figure 2-79 Table 2-47 The Storage menu (For CSV)

NOTE[1]: Applicable to DS1000D Series only.

Figure 2-80 Table 2-48 The Storage menu (For factory)

User’s Guide for DS1000E, DS1000D Series

Internal Memory

Press Storage \rightarrow Internal to enter the following menu.

Figure 2- 81 Table 2- 49 The Internal Memory Menu

\begin{tabular}{|l|l|p{6cm}|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Internal & Int_00 (S) \newline . \newline . \newline . \newline Int_09 (N) & Set up the location of files in internal memory \ \hline Load & & Recall waveform files and setup files from the internal memory location \ \hline Save & & Save waveform files and setup files to the internal memory location \ \hline Delete File (Folder) & & Delete the selected location file (folder) \ \hline \end{tabular}

External Memory

Press \boxedStorage \rightarrow \boxedExternal to enter the following menu.

Figure 2- 82 Table 2- 50 The Memory menu

\begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Explorer & Path Directory File & Switch among Path, Directory and File \ \hline New File (Folder) & & To create new file or folder. \ \hline Delete File (Folder) & & Delete the selected location file (folder) \ \hline Load & & Recall waveform and setup from USB storage device. \ \hline \end{tabular}

Path Back to previous folder Current directory File information. Files Figure 2- 83 File system display

Disk Manage

Press Storage \rightarrow Disk Mana to display the following menu.

Figure 2- 84 Table 2- 51 The Disk Manage Menu (Page 1/2)

\begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Explorer & Path Directory File & Switch among Path, Directory and File \ \hline New folder & & To create new folder( same as new files, see table 2-13) \ \hline Delete File & & Delete file \ \hline Load & & Recall waveform, setup, recorded waveform, Pass/Fail file \ \hline \end{tabular}

Figure 2- 85 Table 2- 52 The Disk Manage Menu (Page 2/2)

\begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Rename & & To rename a file (see table 2-52) \ \hline Disk info & & Display disk information \ \hline \end{tabular}

Rename

Press Storage \rightarrow Disk Manage. \rightarrow Rename to go to the following menu.

Figure 2- 86 Table 2- 53 The Rename Menu

\begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline \uparrow & & To move the cursor up \ \hline \downarrow & & To move the cursor down \ \hline X & & To delete chosen letter \ \hline OK & & Rename the file \ \hline \end{tabular}

Figure 2- 87 Rename the file

Key Points: Factory: The oscilloscope has default settings and can be recalled at anytime. Memory location: Specify memory location to save/recall the waves and setups. Load: Recall saved waveforms, setups and default settings. Save: Save waveforms and setups.

NOTE:

1. Select Save stores not only the waveforms, but also the current settings.
2. To ensure the setups being saved properly, only after the settings are changed for more than 5 seconds can the user turn off the instrument. The oscilloscope can store 10 settings permanently and can restore at anytime.

To Set up the Utility System

Utility shows the menu button for the Utility on the front panel.

Figure 2- 88 Utility setup button

Press the Utility button to pop up the menu for the settings of the Utility system.

Figure 2- 89 Table 2- 54 The Utility Menu (Page 1/3)

Figure 2-90 Table 2-55 The Utility menu (Page 2/3)

Figure 2-91 Table 2-56 The Utility menu (Page 3/3)

NOTE: Self-Calibration: Oscilloscope will calibrate parameter of vertical system (CH1, CH2, and Ext), horizontal system and trigger system.

I/O setting

Press Utility→I/O setting to go to the following menu.

Figure 2-92 Table 2-57 The I/O Setup Menu

NOTE[1]: Users must set the USB device type manually first to ensure the equipment connected is the same as the settings when switch the device from computer (PictBridge printer) to PictBridge printer (computer) by the USB Device port.

© 2008 RIGOL Technologies, Inc. User’s Guide for DS1000E, DS1000D Series 2-69

Language

The oscilloscopes have multi-language user menu, choose as your desire.

Press \boxedUtility \rightarrow Language to select the language.

Figure 2- 93 The Language menu

Please use the fourth menu button or use the knob \circlearrowleft to select the language you need.

Pass/Fail

The Pass/Fail function monitors changes of signals and output pass or fail signals by comparing the input signal that is within the pre-defined mask. The testing results not only can be displayed on screen or output by isolated pass/fail port but also can be alarmed if turn on system sound.

Press \boxedUtility \rightarrow Pass/Fail to go to the following menu.

Figure 2- 94 Table 2- 58 The Pass/Fail Menu (Page 1/2)

Figure 2- 95 Table 2- 59 The Pass/Fail Menu (Page 2/2)

NOTE[1]: The beeper should be opened.

Mask Setting

Users can create, save, load and import/export the Pass/Fail mask by this function.

Press \boxedUtility \rightarrow \boxedPass/Fail \rightarrow \boxedMask Setting to go to the following menu.

Figure 2- 96 Table 2- 60 The Mask setting menu (Page 1/2)

\begin{tabular}{|l|l|p{7cm}|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline X Mask & ↻ < x div> & Set horizontal clearance to the waveform (0.04div-4.00div) \ \hline Y Mask & ↻ < y div> & Set vertical clearance to the waveform (0.04div-4.00div) \ \hline Create Mask & & Create a test mask according to the above clearance \ \hline Location & Internal External & Set the memory location of the mask files. \ \hline \end{tabular}

Figure 2- 97 Table 2- 61 The Mask setting menu (Page 2/2)

When the save as Internal memory

\begin{tabular}{|l|l|p{7cm}|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Save & & Store created test mask into internal memory \ \hline Load & & Recall mask setting file from internal memory \ \hline Imp./Exp. & & Go to import/export menu (same as REF import/export menu. See table 2-10) \ \hline \end{tabular}

2-72 © 2008 RIGOL Technologies, Inc.

Figure 2-98 Table 2-62 The Mask setting menu (Page 2/2)

When the save as external memory

Load

Press Utility → Pass/Fail → Mask Setting → Load to enter the following menu.

Figure 2-99 Table 2-63 The Load menu

NOTE: Pass/Fail function is unavailable in X-Y mode.

© 2008 RIGOL Technologies, Inc. 2-73 User’s Guide for DS1000E, DS1000D Series

Pass/Fail connection

In Pass/Fail testing output circuit, the Oscilloscope adopts the technique of Optical Isolation. It needs to connect to another circuit to fulfill the function. Before connecting to an external circuit, make sure the maximum voltage/current does not exceed 400V/100mA. The output device has no polarity limit and can be connect arbitrarily.

Figure 2- 100 Schematic Diagram of Pass/Fail output

Record

Waveform recorder records input waveforms from CH1 and CH2, with a maximum record length of 1000 frames. This performance can also be activated by the Pass/Fail test output, which makes this function especially useful to capture abnormal signals in long term without keeping an eye watching it. This function contains four modes: OFF, Record, Play back and Storage. More details about the function please refer to the following introduction.

1. OFF: It will close all record functions.

2. Record: To record waveform by selected time interval till the last frame.

Press Utility→Record→Mode→Record to go to the following menu.

Figure 2- 101 Table 2- 64 The Record menu (Page 1/2)

Figure 2- 102 Table 2- 65 The Record menu (Page 2/2)

\begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Interval & \circlearrowleft <1.00ms-1000s> & Set time interval \ \hline \end{tabular}

3. Play back: Play back the recorded waveforms.

Press \boxedUtility \rightarrow \boxedRecord \rightarrow \boxedMode \rightarrow \boxedPlay back to go to the following menu.

Figure 2- 103 Table 2- 66 The Record menu (Page 1/2)

\begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Operate & \blacktriangleright (Run) & Play stopped, press to Start playback \ & \blacksquare (Stop) & Playing, press to stop \ \hline Play mode & \circlearrowleft & Set repeat play mode \ & \blacktriangleright \rightarrow \blacksquare & Set single time play mode \ \hline Interval & \circlearrowleft <1.00ms-20s> & Set up interval \ \hline \end{tabular}

2-76 © 2008 RIGOL Technologies, Inc.

Figure 2- 104 Table 2- 67 The Record menu (Page 2/2) \begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Start Frame & ↻ <1-1000> & Set start frame \ \hline Current Frame & ↻ <1-1000> & Select current frame to be played \ \hline End Frame & ↻ <1-1000> & Set End frame \ \hline \end{tabular}

NOTE: The RUN/STOP button can also replay or continue the waveform display.

4. Storage: Store recorded waveforms to non-volatile memory according to setup frames.

Press Utility→Record→Mode→Storage to go to the following menu.

Figure 2- 105 Table 2- 68 The Storage menu (Page 1/2) \begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Start Frame & ↻ <1-1000> & Set first frame to be saved \ \hline End Frame & ↻ <1-1000> & Set last frame to be saved \ \hline Location & Internal external & Set up Store location \ \hline \end{tabular}

Figure 2- 106 Table 2- 69 The Storage menu (Page 1/2) When the save to Internal memory

Figure 2- 107 Table 2- 70 The Storage menu when the save as external memory

User’s Guide for DS1000E, DS1000D Series

Print Setting

DS1000E, DS1000D series oscilloscopes support print function. Please execute print operation according to the following steps:

1. Connect printer:

DS1000E, DS1000D series oscilloscopes provide two print modes: "Normal" and "PictBridge".

If use PictBridge printer, please select "PictBridge" mode, and then connect the oscilloscopes regarded as "Device equipment" and printer via USB Device port on the rear panel.

Figure 2- 108 PictBridge print

If use Normal printer, please select "Normal" mode, and then connect the oscilloscopes regarded as "Host equipment" and printer via USB Host port on the front panel.

Figure 2- 109 Normal print

2. To set up print parameters:

Press \boxedUtility \rightarrow Print set to enter the following menu.

Figure 2- 110 Table 2- 71 The Print Set Menu ("Normal" Mode)

\begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Print Mode & Normal PictBridge & Select the print mode \ \hline Print & & Execute print function \ \hline Inverted & ON OFF & Set up the invert of printing color on or not \ \hline Palette & Gray scale Color & Set up print color \ \hline \end{tabular}

Figure 2- 111 Table 2- 72 The Print Set Menu ("PictBridge" Mode, Page1/3)

\begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Print Mode & Normal PictBridge & Select the print mode \ \hline Print & & Execute print function \ \hline Abort & & Stop print function \ \hline Status & & Query the status of print job \ \hline \end{tabular}

2-80 © 2008 RIGOL Technologies, Inc.

Figure 2-112 Table 2-73 The Print Set Menu ("PictBridge" Mode, Page2/3)

Figure 2-113 Table 2-74 The Print Set Menu ("PictBridge" Mode, Page3/3)

3. Print:

Make sure the Printer has been connected and the print settings are all ready before printing. Then, press Utility → Print set → Print to execute print operation.

© 2008 RIGOL Technologies, Inc. 2-81

Preference

Press \boxedUtility \rightarrow Preference to go to the following menu

Figure 2- 114 Table 2- 75 The Preference menu (1/2)

Figure 2- 115 Table 2- 76 The Preference menu (2/2)

Key Points:

1. Screen saver: This function extends the life of LCD backlighting system.
2. Expand reference: When changing the volts/div. for channels, the signal expands or compresses around the signal ground level, or the center of the screen. When Center is selected, the waveform will expand or compress around the center of the display. When Ground is selected, the channel ground level will remain the same position on the display and waveform will zoom about the ground level.
3. Sticky key: If sticky feature is turned ON, when adjusting positions (CH1, CH2, MATH, REF, Trig.Lev. and Trig.Pos.), the object will stop at zero position until next adjustment, for the ease of getting back to initial positions.
4. Key Sets: This function help users to set new code to unlock the keyboard.

Self-Calibration

The Self-Calibration adjusts the internal circuitry to get the best accuracy. Use these functions to calibrate the vertical and horizontal systems. For maximum accuracy at any time, run this calibration if the ambient temperature changes by 5°C or more.

Disconnect any probes or cables from all channel inputs, otherwise failure or damage to the oscilloscope may occur. Press Utility \rightarrow Self-Cal to enter the self-calibration interface as follows. Press “RUN/STOP” key to start the operation and press “AUTO” key to exit the system.

Figure 2- 116 Self calibration

NOTE: The oscilloscope must have been working or warm-up at least 30-minutes before running self-calibration to get best accuracy.

System Information

System information can help users to query the instrument model, serial number, software version, installed module and so on.

Press \boxedUtility \rightarrow System Info to enter the system information interface as follows.

Figure 2- 117 System information interface

Special Mode

DS1000E, DS1000D series oscilloscopes provide a new function “Key Lock”, which can meet the needs of industrial production. In this mode, except from F1 to F5 and MENU ON/OFF, other keys are locked. You must input keys to unlock the keyboard, the initial password is “111111”, Further more, you can reset new keys with six-length by keys setting menu.

More details for operation steps please refer to the following introductions:

1. Lock the keyboard

Press Utility button, press Special Mode menu to enter the Lock mode; then choose OK to start keyboard locked function as the following figure. In this mode, except from F1 to F5 and MENU ON/OFF, other keys are locked. If you choose cancel, it will cancel this function.

Figure 2- 118 Interface of keyboard locked

2. Unlock the keyboard

Press any button among F1 to F5 to enter the Unlock mode, then please input the unlock keys (the default is 111111, users can reset new keys with 6 bit length.) to unlock the keyboard.

Figure 2- 119 Interface of keyboard unlock

3. Reset the keys

Press Utility button to choose the Preference menu, then choose set keys option in second page of the menu just like the following figure. Input the old keys and press Enter, input your new code and ensure it again, the system will clew that you have finished new keys setting.

Figure 2- 120 Interface of key resetting

To Measure Automatically

The \boxedMeasure button in the menu area activates the automatic measurement function. The instruction below shows the powerful measurement function of the oscilloscopes.

Figure 2- 121 Auto measurement setup button

Menu explanation:

Press the \boxedMeasure button to display the menu for the settings of the Automatic Measurements.

The oscilloscopes provide 22 auto measurements: Vpp, Vmax, Vmin, Vtop, Vbase, Vamp, Vavg, Vrms, Overshoot, Preshoot, Freq, Period, Rise Time, Fall Time, Delay1 \rightarrow2\mathfrakf, Delay1 \rightarrow2\mathfrakT, Phas1 \rightarrow2\mathfrakf, Phas1 \rightarrow2\mathfrakT, +Width, -Width, +Duty, -Duty (10 voltage and 12 timing measurements).

Figure 2- 122 Table 2- 77 The Measure menu

\begin{tabular}{|l|l|l|} \hline \textbf{Menu} & \textbf{Settings} & \textbf{Comments} \ \hline Source & CH1 & Select CH1 or CH2 as source channel \ & CH2 & for measurement \ \hline Voltage & & Select to measure voltage parameter \ \hline Time & & Select to measure time parameter \ \hline Clear & & Clear measurement result on screen \ \hline Display & OFF & Turn off all measurement results \ All & ON & Turn on al measurement results \ \hline \end{tabular}