Review the following safety precautions carefully before operate the instrument to
avoid any personal injury or to damage the instrument and any products connected
to it.
To avoid potential hazards use the instrument in a manner only as specified by this
user’s guide.
The instrument should be serviced by qualified personnel only.
To Avoid Fire or Personal Injury
Use proper power cord Use only the power cord designed for your oscilloscope
and authorized in your country.
Connect and Disconnect accessories properly. Do not connect or disconnect
probes or test leads while they are connected to a voltage source
Ground the instrument This oscilloscope is grounded through the protective
earthing 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 oscilloscope ensure that the instrument is properly
grounded.
Connect the probe properly. The probes’ ground terminals are at the same
voltage level with earth terminal of the instrument. Do not connect the ground
terminals to a high voltage.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and marks on the instrument. Follow the user’s manual for further ratings
information before making connections to the instrument.
Do not operate without Covers. Do not operate your oscilloscope with covers or
panels removed.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Avoid Circuit or Wire Exposure. Do not touch exposed connections and
components when power is on.
Do not operate with suspected failures. If you suspect damage with this
product, have it inspected by qualified service personnel before further operations.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details as to the oscilloscope has proper ventilation.
Do not operate in wet/damp conditions
Do not operate in an explosive atmosphere
Keep product surfaces clean and dry
RIGOL DS1000-Series Digital Oscilloscopes offer exceptional waveform viewing
and measurements in a compact, lightweight package. The DS1000 series are ideal
for production test, field service, research and design and all of the applications
involving analog/digital circuits test and troubleshooting, as well as education and
training.
Each of these oscilloscopes gives you:
zDual Channel, Bandwidth:
zOptional 16 digital channels (Mixed signal oscilloscope), each channel can be
turned on or off independently, or in a 8 bit group
z Mono/Color TFT LCD Displays at 320*234 resolution
z USB storage and printing supports, firmware upgradeable via USB connectivity
z Adjustable waveform intensity, more effective waveform viewing
z One-touch automatic setup for ease of use (AUTO)
z Saves 10 Waveforms, 10 setups, supports CSV and bitmap format
z Newly designed Delayed Scan Function, easy to give attention to both details
and overview of a waveform
z 20 Automatic measurements
z Automatic cursor tracking measurements
z Waveform recorder, record and replay dynamic waveforms
z User selectable fast offset calibration
z Built-in FFT function, Frequency Counter
z Digital filters, includes LPF,HPF,BPF,BRF
z Pass/Fail Function, optically isolated Pass/Fail output
z Add, Subtract and Multiply Mathematic Functions
z Advanced trigger types include: Edge, Video, Pulse width, Slope, Alternative,
z Multiple Language User Interface
z Pop-up menu makes it easy to read and easy to use
z Built-in Chinese and English help system
z Easy-to-use file system supports Chinese & English characters key-in
DS1000 Series Digital Oscilloscope accessories:
z Two 1.5 meter, 1:1 10: 1 switchable probes
z Digital test set (Mixed Signal Oscilloscope only, DS1xxxxD), include
A data line (Model: FC1868)
An active logic head (Model: LH1116)
Twenty test wire (Model: LC1150)
Twenty logic clips (Model: TC1100)
z Power cord for country of destination
z User’s Manual
z Warranty Card
z A Ultrascope for WIN98/2000/XP software
One of the first things you will want to do with your new oscilloscope is to become
acquainted with its front panel. This chapter will help you be familiar with the layout
of the knobs and keys and how to use them. Read the chapter carefully before
further operations.
The front panel has knobs and buttons. The knobs are used most often and are
similar to the knobs on other oscilloscopes. The buttons not only let you use some of
the functions directly but also bring up soft button menus on the screen, which allow
you access to many measurement features associated with advanced functionalities,
math, and reference or run control features.
Figure1-1
DS1000-Series Oscilloscope’s Front Panel
DS1000 series oscilloscopes provide an easy-to-use user interface, the definitions of
the buttons and the knobs are as follows:
Menu buttons: Associated with Measure, Cursor, Acquire, Display, Storage, and
Throughout this book, character figures of buttons and knobs are the same to those
on front-panel.
A box around the name of the key denotes MENU function buttons on front-panel,
such as Measure.
()denotes the multi-function knob .
denotes the two POSITION knobs.
denotes the two SCALE knobs.
denotes the LEVEL knob.
The name with a drop shadow denotes the menu operating key, such as WAVEFORM
soft key in STORAGE menu.
After you get a new DS1000 series oscilloscope, please inspect the instrument
according to the following steps:
1. Inspect the shipping container for damage.
Keep a damaged shipping container or cushioning material until the contents of
the shipment have been checked for completeness and the instrument has been
checked mechanically and electrically.
2. Check the accessories.
Accessories supplied with the instrument are listed in "Accessories" in this
manual.
If the contents are incomplete or damaged notify your RIGOL Sales
Representative.
3. Inspect the instrument.
In case any mechanical damage or defect, or if the instrument does not operate
properly or pass performance tests, notify your RIGOL Sales Representative.
If the shipping container is damaged, or the cushioning materials show signs of
stress, notify the carrier as well as your RIGOL sales office. Keep the shipping
materials for the carrier’s inspection.
RIGOL offices will arrange for repair or replacement at RIGOL’s option without
waiting for claim settlement.
Perform this quick functional check to verify that your instrument is operating
correctly.
1. Turn on the instrument.
Use only power cords designed for your oscilloscope. Use a power source that
delivers 100 to 240 VAC
the display shows the waveform window. Push the Storage
the top menu box and push the Factory menu box.
Power button
, 45Hz to 440Hz. Turn on the instruments, and wait until
RMS
button, select Storage in
Storage button
Figure 1-5
WARNNING:
!
To avoid electric shock, be sure the oscilloscope is properly grounded.
2.Input a signal to a channel of the oscilloscope
① Set the switch on the probe to 10X and connect the probe to channel 1 on the
oscilloscope. To do this, align the slot in the probe connector with the key on the
CH 1 BNC, push to connect, and twist to the right to lock the probe in place.
Attach the probe tip and ground lead to the PROBE COMP connector.
Perform this adjustment to match your probe to the input channel. This should be
done whenever you attach a probe for the first time to any input channel.
1. Set the Probe menu attenuation to 10X. Set the switch to 10X on the probe and
connect the probe to channel 1 on the oscilloscope. If you use the probe
hook-tip, ensure a proper connection by firmly inserting the tip onto the probe.
Attach the probe tip to the PROBE COMP connector and the reference lead to the
PROBE COMP Ground connector, turn on channel 1, and then press AUTO.
2. Check the shape of the displayed waveform.
Over compensated Correctly Compensated Under Compensated
Figure 1-9
Figure 1-9
3. If necessary, use a non-metallic tool to adjust the trimmer capacitor on the probe
for the flattest square wave possible as displayed on the oscilloscope.
4. Repeat as necessary.
WARNNING: To avoid electric shock while using the probe, be sure the
!
perfection of the insulated cable, and do not touch the metallic portions of
the probe head while it is connected with a voltage source.
The oscilloscope has an Auto feature that sets up the oscilloscope automatically to
display the input signal in a best fit. This Auto feature requires the input signal with a
frequency of 50 Hz or higher and a duty cycle greater than 1%.
When you press the AUTO button, the oscilloscope automatically sets up vertical,
horizontal and Trigger controls to display the input signal in the screen for view. You
may want to adjust the controls manually if necessary to get the best results.
DS1000 series are two-channel oscilloscopes with an external trigger input. In this
exercise you connect a signal to the channel 1 input.
1. Connect a signal to the oscilloscope.
2. Press AUTO.
When you press the AUTO button, the oscilloscope may change the current settings
to display the signal. It automatically adjusts the vertical and horizontal scaling, as
well as the trigger coupling, type, position, slope, level, and mode settings.
Figure 1-14 shows the Channels, MATH, REF, Logic Analyzer and OFF buttons and
vertical
through the vertical buttons, knobs, and status bar. It will help you be familiar with
the setting of the vertical parameters.
, knobs. The following exercise guides you
Figure 1-14
1. Center the signal on the display with the
knob.
The
as you turn the
knob moves the signal vertically, and it is calibrated. Notice that
knob, a voltage value is displayed for a short time
indicating how far the ground reference is located from the center of the screen. Also
notice that the ground symbol on the left side of the display moves in conjunction
with the
If the channel is DC coupled, you can quickly measure the DC component of
the signal by simply noting its distance from the ground symbol.
If the channel is AC coupled, the DC component of the signal is blocked,
allowing you to use greater sensitivity to display the AC component of the
signal.
Vertical offset back to 0 shortcut key
Turn the
channel and press the
knob to change the vertical display position of
knob to set the vertical display position
back to 0 as a shortcut key, this is especially helpful when the trace position is
far out of the screen and want it to get back to the screen center immediately.
2. Change the vertical setup and notice that each change affects the
status bar differently.
You can quickly determine the vertical setup from the status bar in the display.
zChange the vertical sensitivity with the
knob and notice that it
causes the status bar to change.
z Press CH1.
z A soft button menu appears on the display, and the channel turns on (or remains
on if it was already turned on).
zToggle each of the soft buttons and notice which button cause the status bar to
change. Channel 1 and 2 have a vernier soft button that allows the
knob to change the vertical step size in smaller increments. To press Volts/Div
soft button, you can change the step size into Fine or Coarse status.
zPress OFFbutton to turn the channel off.
Coarse/Fine Shortcut key
You can set the Coarse/Fine vertical control not only on the Volts/Div item in
the CH1 or CH2 menus, but also by simply pressing the vertical
knob.
Figure 1-15 shows the MENU button, and knobs of
horizontal system. The following exercise guides you through these buttons, knobs,
and status bar.
Figure 1-15
1. Turn the
knob and notice the change it makes to the status
bar.
The horizontal
knob changes the sweep speed in a 1-2-5 step sequence,
and the value is displayed in the status bar. The time base ranges of the DS1000
series are listed as follows. The horizontal scan speed is from 5ns/div* to 50s/div.
* NOTE: The speed of horizontal scan varies by different models.
Delayed Scan Shortcut key
To press the
knob in the horizontal control area on the front-panel
is another way to enter or exit Delayed Scan mode and it is equal to the
following menu operations, MENU→Delayed.
knob to set the horizontal offset to 0 as a shortcut
key, this is especially helpful when the trigger point is far out of the screen and
want it to get back to the screen center immediately.
3. Press the MENU key to display the TIME menu.
In this menu, you can enter or exit the Delayed Scan mode, set the display to Y-T, X-Y
or ROLL mode, and turn the horizontal
knob to adjust trigger offset.
Horizontal position control
Trig-Offset: In this setting, the trigger position will be changed horizontally
Figure 1-16 shows the trigger control area on the front panel, it has a trigger level
knob and three soft buttons. The following exercise guides you through these trigger
buttons, knobs, and status bar.
Figure 1-16
1. Turn the trigger Level knob and notice the changes it makes to the
display.
On the DS1000 series oscilloscopes, as you turn the
knob or press the
50% menu button, two things happen on the display for a short time. First, the
trigger level value is displayed at the bottom-left of the screen. If the trigger is DC
coupled, it is displayed as a voltage value. If the trigger is AC coupled or LF reject, it
is displayed as a percentage of the trigger range. Second, a line is displayed showing
the location of the trigger level (as long as AC coupling or low frequency reject are
not selected).
knob to set trigger level back to 0 as a shortcut key.
2. Change the trigger setup and notice these changes affect the status bar
differently.
· Press MENU button in the trigger control area.
A soft button menu appears on the display showing the trigger setting choices.
Figure 1-17 displays this trigger menu.
· Press the trigger Mode button and choose Edge.
· Press the trigger Source button to select CH1.
· Press the trigger Slope button to choose Rising Edge.
· Press the trigger Sweep button to select Auto.
· Press the trigger Set Up button to enter secondary menu.
Figure 1-17
NOTE: The trigger type, slope and source change in conjunction with the status bar
on the top-right of the screen.
3. Press 50%
This key is an action button. Every time you press the 50% button, the oscilloscope
sets the trigger level to the center of the signal.
Press this button starts an acquisition regardless of an adequate trigger signal,
usually used in “Normal” or ”Single” trigger mode. This button has no effect if the
acquisition is already stopped.
Key point:
Holdoff: A time interval before the oscilloscope response to next trigger
signal. During this holdoff period, the trigger system becomes “blind” to
trigger signals. This function helps to view complex signals such as an AM
By now you have got a brief understanding of DS1000 series with the VERTICAL,
HORIZONTAL, and TRIGGER groups of the front-panel buttons. You should also
know how to determine the setup of the oscilloscope by viewing the status bar.
This chapter takes you through all groups of front-panel buttons, knobs, and menus.
You will also further your knowledge of the operation hints by reading this guide.
We recommend you perform all of the following exercises so that you could get the
most out of the powerful measurement capabilities of your oscilloscope.
This chapter covers the following topics:
Understand the vertical system ( CH1、CH2、MATH、REF、LA(Mixed
Signal Oscilloscope)、OFF 、
Vertical、Vertical)
Understand the horizontal system(MENU、Horizontal、
Horizontal)
Understand the trigger system (
To set up the sampling system (Acquire)
To set up the display system (Display)
To save and recall waveforms, CSV format, bmp format and other setups
Each channel of DS1000 has an operation menu and it will pop up after pressing CH1
or CH2 button. The settings of all items in the menu are shown in the table below.
Figure 2-1 Table2-1
MenuSettingsComments
Blocks the DC component of the
input Signal
Passes both AC and DC
components of the input signal
Disconnects the input signal
Limits the channel bandwidth to
20MHz to reduce display noise.
Get full bandwidth.
Set this to match your probe
attenuation factor to make the
vertical scale readout correct
To use CH1 as an example, input a signal that contains high frequency component.
Press CH1→BW Limit→OFF , to set up bandwidth limit to “OFF” status. The
oscilloscope is set to full bandwidth and the high frequency component in the signal
will pass.
The waveform is displayed as Figure 2-6:
Figure 2-6
Turn off the BW
limit
Press CH1→BW Limit→ON, to set up bandwidth limit to “ON” status. It will reject
the frequency component higher than 20MHz.
When using a probe, the oscilloscope allows you to select the attenuation factor for
the probe. The attenuation factor changes the vertical scaling of the oscilloscope so
that the measurement results reflect the actual voltage levels at the probe tip.
To change (or check) the probe attenuation setting, press the CH1 or CH2 button
(according to which channel you are using), toggle the Probe soft button to change
the attenuation factor to match the probe you are using.
This setting remains in effect until changed again.
Figure 2-8 gives an example for using a 1000:1 probe and its attenuation factor.
Invert turns the displayed waveform 180 degrees, as respect to the ground level.
When the oscilloscope is triggered on the inverted signal, the trigger is also inverted.
Figure 2-10 and 2-11 show the changes after inversion.
The mathematic functions include “add”, “subtract”, “multiply” and “FFT” for CH1 and
CH2. The mathematic result can also be measured by grid and cursor.
MATH scale
Figure 2-16 Table 2-5
MenuSettingsComments
Operation
Source A
Source B
Invert
A+B
A-B
A×B
FFT
CH1
CH2
CH1
CH2
ON
OFF
Figure 2-15
Add source A and source B
Subtract source B from source A
Multiply source B by source A
Fast Fourier Transform
Define CH1 or CH2 as source A
Define CH1 or CH2 as source B
Invert the MATH waveform.
Restore to original waveform display.
The FFT (Fast Fourier Transform) process mathematically converts a time-domain
signal into its frequency components. FFT waveforms are useful in the following
applications:
z Measuring harmonic content and distortion in systems
z Characterizing noise in DC power supplies
z Analyzing vibration
Figure 2-17 Table2-6
MenuSettingsComments
Operate
Source
Window
Display
A+B
A- B
AxB
FFT
CH1
CH2
Rectangle
Hanning
Hamming
Blackman
Split
Full screen
Add source A to source B
Subtract source B from source A
Multiply source B by source A
Fast Fourier Transform
Define CH1 or CH2 as FFT source
Select window for FFT
Display FFT waveform on half
screen
Display FFT waveform on full
screen
Scale
Vrms
dBVrms
Set “Vrms ” as vertical unit
Set “dBVrms ” as vertical unit
DS1000 series oscilloscopes provide four FFT windows. Each window is a trade-off
between frequency resolution and amplitude accuracy. What you want to measure
and your source signals characteristics help determine which window to use. Use the
following guidelines to select the best window.
Tab le 2-7
Window
Rectangle
Hanning
Hamming
Blackman
Features
Best frequency
resolution and worst
magnitude resolution.
This is essentially the
same as no window.
Best for measuring
Transients or bursts,the signal
levels before and after the event
are nearly equal.
Equal-amplitude sine waves with
fixed frequencies.
Broadband random noise with a
relatively slow varying spectrum.
Better frequency,
poorer magnitude
accuracy than
Rectangular.
Hamming has slightly
better frequency
resolution than
Sine, periodic, and narrow-band
random noise.
Transients or bursts where the
signal levels before and after the
events are significantly different.
Hanning.
Best magnitude, worst
frequency resolution.
Single frequency waveforms, to
Find higher order harmonics.
Key points:
FFT Resolution: the quotient betweensampling rate and number of FFT
points. With a fixed FFT points, the lower sampling rate results in better
resolution.
Nyquist Frequency
The highest frequency that any real-time digitizing oscilloscope can acquire
without aliasing. It’s normally half of the sample rate. This frequency is called
the Nyquist frequency. Frequency above the Nyquist frequency will be under
sampled, causing a situation known as aliasing.
Reference Waveforms are saved waveforms to be selected for display. The reference
function will be available after saving the selected waveform to non-volatile memory.
Press REF button to display reference waveform menu.
Figure 2-18 Table2-8 when using internal memory
MenuSettingsComments
CH1
CH2
Select channel1 as REF channel
Select channel2 as REF channel
Source
Location
Save Save REF waveform
Imp./Exp. Go to import/export menu(see table 2-10)
Reset Reset REF waveform
Figure 2-19 Table 2-9 when using external memory
MenuSettingsComments
Source
MATH/FFT
LA
Internal
External
CH1
CH2
MATH/FFT
LA
Select Math/FFT as REF channel
Select LA as REF channel( Mixed Signal
Oscilloscope)
Select memory location in scope
Select memory location out scope
Select channel1 as REF channel
Select channel2 as REF channel
Select Math/FFT as REF channel
Select LA as REF channel( Mixed Signal
Oscilloscope)
Location
Save
Import Go to import menu(see table 2-14)
Reset Reset REF waveform
Internal
External
Select memory location in scope
Select memory location out scope
III. Set up LA channel (mixed signal oscilloscope)
Single channel or group channels can be chosen ON or OFF, and also can set the size
of waveform. Change display location of digital channel on screen and select
threshold style.
Press LA function button and go to the following menu.
Figure 2-31 Table 2-15
MenuSettingsComments
D7-D0 Set up channel group D7-D0 (see table 2-16)
D15-D8 set up channel group D15-D8 (see 2-17)
Current
Threshold
<D15-D0>
TTL
CMOS
ECL
User
Select channel by turning (
)knob
Select mode of whole digital channels. The
threshold voltage can set by user when in
user-defined style.
user
<Threshold
Set threshold voltage by turning (
)knob.
Voltage>
1. Display and re-line up the digital channels
(1) Press LA → D7-D0 or D15-D8 and go to the group channel setting menu. Turn
on or turn off the display of the digital channels.
(2) Press LA → current and choose digital channel by turning (
Press LA → D7-D0 or D15-D8, turn on/off the channel single, or in a group. Also
you can change the size of waveforms in 8 bits as a group. See table 2-16 and 2-17
Figure 2-34 Table 2-16
MenuSettingsComments
channel D7-D0 Turn on or off single channel of D7-D0
D7-D0
Size
Reset Reset waveform of channel D7-D0
Figure 2-35 Table 2-17
MenuSettingsComments
channel D15-D8 Turn on or off single channel of D15-D8
D15-D8
Size
Reset Reset waveform of channel D15-D8
Turn on
Turn off
Turn on
Turn off
Turn on or off all 8 channels together
Display 8 channels in a single screen
Display 16 channels in a single screen
Turn on or off 8 channels together
Display 8 channels in a single screen
Display 16 channels in a single screen
press LA → D7-D0 → Channel , and choose the wanted channel by turning ()
knob. Press No. 1 soft button or push down()knob to turn on /off the channel.
When the channel is on, we can see the mark(
shown as(
.)
). When the channel is off, the mark
As figure 2-36 shows.
On-off
channels
Channel list and
status of on-off
Figure 2-36
2. Force turn on or off all logic channels
Press LA → D7-D0 → D7-D0 → Turn On / Turn Off (or D15-D8 → D15-D8 →Turn
On / Turn Off) will force to turn all the channels on/off. If you want to turn on/off any
single channel instead, select the Channel by turning (
soft button or(
)knob.
)knob, then press No. 1
3.Set up the viewing size of logic channels:
Press LA → D7-D0 → Size ,or D15-D8 → Size ,to select wave size of logic
channels.
Select
to view 8 channels on the screen;Select to view all of the 16
channels on the screen.
4.Reset the logic channels display:
Press LA → D7-D0 → Reset ,or D15-D8 → Reset to reset the display of logic
channels.
The CH1, CH2, Ext. Trigger and LA (Mixed Signal Oscilloscope) channels on DS1000
series are input channels. All functionalities applied will be based on operating the
instrument with channels. So MATH and REF can be regarded as relatively isolated
channels.
To turn on/off any one of the channels, press the corresponding button on the front
panel. The key backlight indicates the channel is currently active. Press the button
again to turn the channel off. Or when channel is currently selected, press OFF will
turn the channel off as well, and the key backlight also goes off.
Table 2-18
Channel ModeSettings
ON
Channel 1(CH1)
Channel 2(CH2)
MATH
Selected
OFF
ON
Selected
OFF
ON
Selected
OFF
DS1000 MONO DS1000 COLOR
CH1 ( black letter)
CH1(white letter)
No indicator
CH 2 ( black letter)
CH2(white letter)
No indicator
Math (black letter)
Math (white letter)
No indicator
Status Indicator
CH1 (black letter)
CH1 ( yellow letter)
No indicator
CH2 (black letter)
CH2 ( blue letter)
No indicator
Math (black letter)
Math (purple letter)
No indicator
Note:
The status indicators of the DS1000 Mono series in the above table are displayed
when the Screen is set as Normal. The channel status symbol is displayed at the
lower-left of the screen. Pressing LA will turn all the digital channels on/off
You can use the vertical controls to display waveforms, adjust vertical
, and set input parameters.
1. Using vertical
The vertical
knob.
can change the position of waveforms in all channels
(including MATH, REF and LA). The resolution of the knob changes according to
the change of the vertical level (The digital channels of Mixed Signal Oscilloscope
changes according to the changes of the waveforms displayed). Pressing this
knob will clear the channel offset to zero. (Exclude digital channels in the Mixed
Signal Oscilloscope)
1. Using vertical
The vertical
knob.
can change the vertical sensitivity of waveforms in all
channels (including MATH and REF, excluding LA). If the Volts/Div is set to
“Coarse”, the waveform scales in a 1-2-5 step sequence from 2 mV to 5 V. If the
Volts/Div is set to “Fine”, it scales to small steps between the coarse settings.
and
3. Channels can be adjusted by the vertical
andonly when
they are selected.
4. When you change the vertical position, the position message is displayed on the
left bottom of the screen, in the same color as the corresponding channel. The
unit is V (Volts).
The oscilloscope shows the time per division in the scale readout. Since all active
waveforms use the same time base, the oscilloscope only displays one value for all
the active channels, except when you use Delayed Scan, or Alternative Trigger.
The horizontal controls can change the horizontal scale and position of waveforms.
The horizontal center of the screen is the time reference for waveforms. Changing
the horizontal scale causes the waveform to expand or contract about the screen
center.
Horizontal position changes the displayed waveform position, relative to the trigger
point.
The Horizontal Knobs
: The horizontal knob adjusts the horizontal position of
all channel (include Math) waveforms. The resolution of this control
varies with the time base. Pressing this button clears trigger offset and
moves the trigger point to the horizontal center of the screen.
: Use to select the horizontal time/div (scale factor) for the
main or the Delayed Scan time base. When Delayed Scan is enabled, it
changes the width of the window zone by changing the Delayed Scan
time base.
Horizontal Menu.
Press the horizontal MENU button to display the horizontal menu. The settings of this
menu are listed in the following table.
Turn on Delayed Scan mode
Turn off the Delayed Scan mode
Show the relative relation between
vertical voltage and horizontal
time.
Show CH1 value at X axis; CH2
value at Y axis.
In Roll Mode, the waveform display
updates from right to left.
④⑤
Figure 2-38: Status bar and mark for Horizontal control
①The mark represents the current waveform window’s position in the memory.
②This mark displays the trigger position in the memory.
③This mark displays the trigger position in the current waveform windows.
④ Status bar displays the horizontal time base (main time base).
⑤ Status bar displays the trigger’s horizontal offset according to the center of the
window.
Key Points
Y-T:
he conventional oscilloscope display format. It shows the voltage of a
waveform record (on the vertical axis) as it varies over time (on the
horizontal axis).
X-Y: XY format displays channel 1 in the horizontal axis and channel 2 in the
vertical axis.
Roll Mode: In this mode, the waveform display rolls from right to left. No trigger
or horizontal offset control of waveforms is available during Roll Mode, and
it’s only available when set to 500 ms/div or slower.
Slow Scan Mode: This mode is available when the horizontal time base is set to
50ms or slower. In this mode, the oscilloscope acquires sufficient data for
the left part to the trigger point, then wait for trigger, when trigger occurs, it
continue to draw the rest part from the trigger point to the end of the right
side. When choosing this mode to view low frequency signals, it is
recommended that the channel coupling be set as DC.
Time/Div: Horizontal scale. If the waveform acquisition is stopped (using the
RUN/STOP button), the Time/Div control expands or compresses the
waveform.
The Delayed Scan is a magnified portion of the main waveform window. You can use
Delayed Scan to locate and horizontally expand part of the main waveform window
for a more detailed (higher horizontal resolution) analysis of signal. Use Delayed
Scan to expand a segment of a waveform to see more details. The Delayed Scan time
base setting cannot be set slower than the Main time base setting.
Time base of
Delayed Scan
Waveform to be horizontally expanded
Expanded waveform in horizontal
Main timebase
Figure 2-39: Delayed Scan window
The following steps show you how to use Delayed Scan.
1. Connect a signal to the oscilloscope and obtain a stable display.
2. Press horizontal MENU → Delayed → ON or press horizontal knob to
enter Delayed Scan mode.
The screen is divided into two parts. The upper half displays the main waveform
window and the lower half displays an expanded portion of the main waveform
window. This expanded portion of the main window is called the Delayed Scan
This format is useful for studying phase relationships between two signals.
Channel 1 in the horizontal axis(X) and channel 2 in the vertical axis(Y), the
oscilloscope uses a none-trigger acquisition mode, data is displayed as dots. .
Figure 2-40: X-Y display format
The following modes or functions will not work in X-Y format.
The trigger determines when the oscilloscope starts to acquire data and display a
waveform. When a trigger is set up properly, it can convert unstable displays or blank
screens into meaningful waveforms.
When the oscilloscope starts to acquire a waveform, it collects enough data so that it
can draw the waveform to the left of the trigger point. The oscilloscope continues to
acquire data while waiting for the trigger condition to occur. After it detects a trigger,
the oscilloscope continues to acquire enough data so that it can draw the waveform
to the right of the trigger point.
The trigger control area on the front panel includes a knob and three buttons:
: The knob that set the trigger level; press the knob and the level will be
cleaned to zero.
50%: The instant execute button setting the trigger level to the vertical
midpoint between the peaks of the trigger signal
FORCE: Force to create a trigger signal and the function is mainly used in
Normal and Single mode
MENU: The button that activates the trigger controls menu.
The oscilloscope provides seven trigger modes: Edge, Pulse, Slope, Video,
Alternative, Pattern (only for mixed signal oscilloscopes) and Duration trigger (only
for mixed signal oscilloscopes).
Edge:An edge trigger occurs when the trigger input passes through a specified
voltage level in the specified slope direction.
Pulse: Use this trigger type to catch pulses with certain pulse width.
Video: Use video trigger on fields or lines for standard video signals.
Slope: The oscilloscope begins to trigger according to the signal rising or falling
speed.
Alternative: Trigger on non-synchronized signals
Pattern: To Trigger through detecting a specified code.
Duration: To trigger within a specified time on the conditions of a specified code
An edge trigger determines whether the oscilloscope finds the trigger point on the
rising or the falling edge of a signal. Select Edge trigger Mode to trigger on Rising
edge, falling edge or rising & falling edge.
Figure 2-42 Table 2-20
MenuSettingsComments
Select CH1 as trigger signal
Select CH2 as trigger signal
Select EXT TRIG as trigger signal
Select attenuated EXT TRIG/5 as
trigger signal
Select power line as trigger signal
Select a digital channel in D15-D0 as
trigger source( Only in mixed signal
oscilloscopes)
Trigger on rising edge
Trigger on falling edge
Trigger on both ring & falling edge
Acquire waveform even no trigger
occurred
Acquire waveform when trigger
occurred.
When trigger occurs, acquire one
waveform then stop
Slope trigger sets the oscilloscope as the positive/negative slope trigger within the
specified time
Figure 2-50 Table 2-26 ( Page One)
MenuSettingsComments
CH1
Source
CH2
EXT
EXT/5
When
Time
<Time Set >
Figure 2-51 Table 2-27 ( Page Two)
MenuSettingsComments
Vertical
Set channel 1 as trigger source
Set channel 2 as trigger source
Set EXT. channel as trigger source
Set EXT/5 as trigger source
Set slope condition
Set slope time
Select the level that can be adjusted
by
Acquire waveform even when no
trigger condition is met.
Acquire waveform when trigger
condition is met.
When trigger condition is met, acquire
one waveform and then stop
Note: Slope time can be set from 20ns to 10s. When a signal meets the trigger
condition, scope will execute the acquisition. You can adjust LEVEL A/ LEVEL B or
both simultaneous by turning the
When alternative trigger is on, the trigger sources are from two vertical channels.
This mode can be used to observe two non-related signals. You can choose two
different trigger modes for the two vertical channels. The options are as follows:
Edge, Pulse, Slope and video. The info of the trigger level of the two channels will be
displayed on the upper-right of the screen.
Figure 2-52 Table 2-28 (Trigger Type: Edge)
MenuSettingsComments
Select
Type Edge
Slope
Set Up
CH1
CH2
(Rising)
(Falling)
( Rising &
Falling)
To go to set up menu. See table
Set trigger mode for Channel 1
Set trigger mode for Channel 2
Set Edge Trigger as the trigger
type
Trigger on rising edge
Trigger on falling edge
Trigger on both ring & falling
edge
Pattern trigger identifies trigger terms by checking appointed code. The code is
logical relationship of all channels, with high (H), low (L) and ignore(X).
Figure 2-59 Table 2-35
MenuSettingsComments
Select D15-D0 Choose digital channel for Pattern trigger
High
Low
Ignore
Rising Edge
Falling Edge
Acquire waveform even no trigger occurred
Acquire waveform when trigger occurred
When trigger occurs, acquire one waveform
and then stop
To go to set up menu, see table 2-40
Code
Sweep
Set Up
H
L
X
Auto
Normal
Single
Key Points:
H(High):Logic high: voltage is higher than threshold setting.
L(Low): Logic low: voltage is lower than threshold setting.
X(Ignore):Don’t care. If all the channels are ignored, the oscilloscope won’t be
triggered.
Rising Edge(
)or Falling Edge():Set the code as an edge of the channel,
rising edge or falling edge. When the edge is appointed, if code settings of other
channels are all true, the oscilloscope will be triggered on the appointed edge. If no
edge is appointed, the oscilloscope will be triggered on the last edge whose code is
true.
Edge of appointed code
You can only appoint one code as edge. If you have appointed an edge, then
appointed another edge in a different channel, and the first appointed edge will
be set to X (Ignore).
Trigger can occur from several sources: Input channels (CH1, CH2 and D15-D0
on mixed signal oscilloscopes), AC Line, Ext, Ext/5.
z CH1 or CH2: It is the most commonly used trigger source.The channel will
work when selected as a trigger source whatever displayed or not.
zExt Trig: The instrument can trigger from a third source while acquiring
data from CH1 and CH2. For example, you might want to trigger from an
external clock or with a signal from another part of the test circuit. The Ext, Ext/
5 trigger sources use the external trigger signal connected to the EXT TRIG
connector. Ext uses the signal directly; it has a trigger level range of +1.6 V to
-1.6 V. The EXT/ 5 trigger source attenuates the signal by 5X, which extends the
trigger level range to +8 V to -8 V. This allows the oscilloscope to trigger on a
larger signal.
zAC 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 power cord, so you do not have to input an AC
trigger signal. 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.
zAuto: 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
NOTE: When horizontal control is set under 50 ms/div, Auto mode allows the
oscilloscope don’t capture trigger signal.
zNormal: 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.
zSingle: 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 what part of the signal passes to the trigger circuit.
Coupling types include AC, DC, LF Reject and HF Reject.
AC: AC coupling blocks DC components.
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 (14div) of pre-trigger and 1s delayed trigger can be
surveyed by adjusting the horizontal
knob.
This feature is very useful because you can see the events that led up to the
trigger point. Everything to the right of the trigger point is called post-trigger
information. The amount of delay range (pre-trigger and post-trigger information)
available is dependent on the sweep speed selected.
To avoid the influence of noise from the physical world, and get the stable trigger,
the trigger circuit has adopted Stickiness. In DS1000 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.
zTo reduce the displayed random noise, select the Average Acquisition. And this
mode would make the screen refresh slower.
zTo Avoid signal aliasing, select Peak Detect Acquisition.
Figure 2-70: Signal with Peak Detect Acquisition
The Peak Detect effect is shown as the figure above.
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.
DS1000 has Real-time sampling rate up to 400MSa/s. At the time base 50ns or
faster, the oscilloscopes use the sine(x)/x interpolation to expand the horizontal
time base.
Equivalent sampling:
Also known as Repetitive sampling. In this mode, you can get up to 40 ps 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:
Oscilloscope acquires signal byequal 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:
Peak Detect mode captures the maximum and minimum values of a signal. Finds
highest and lowest record points over many acquisitions.
Figure 2-74 shows the menu button for the storage system on the front panel.
Storage setup button
Figure 2-74
Press the Storage button to pop up the menu for the settings of the storage system.
The waveforms and setups in both internal memory and external memory can be
stored and recalled. The waveform file, setup file, bitmap and CSV file in external
memory can be created and deleted. System supports English/Chinese key in.
Waveform and setup, the menu as following:
Figure 2-75 Table 2-44
MenuSettingsComments
Waveform
Setups
Storage
Bit map
CSV
Factory
Internal
External
Disk Mana.
Store or recall waveform
Store or recall instrument setups
Create or delete bit map files
Create or delete CSV files
Recall factory setups
Go to menu for internal memory
operation(see table 2-48)
Go to menu for external memory
operation(see table 2-49)
For factory default setups, the menu as following:
Figure 2-76
Tab le 2-45
MenuSettingsComments
Storage
Load Recall factory setups or files
Disk Mana.
For CSV, the menu as following:
Table 2-46
Figure 2-77
MenuSettingsComments
Storage
Data Depth
Para Save
External
Disk Mana.
Waveform
Setups
Bit map
CSV
Factory
Waveform
Setups
Bitmap
CSV
Factory
Displayed
Maximum
On
Off
Store or recall waveform
Store or recall instrument setups
Create or delete bit map files
Create or delete CSV files
Recall factory setups
Go to disk manage menu (see
table 2-50)
Store or recall waveform
Store or recall setups
Create or delete bit map files
Create or delete CSV files
Recall factory setups
Save currently displayed
waveform data to CSV file
Save the whole waveform
data in memory to CSV file
Save the current oscilloscope
settings in different format
with the same file name
Go to menu for external
memory operation(see table
2-49)
Go to disk manage menu
(see table 2-50)
Store or recall waveform
Store or recall setups
Create or delete bit map files
Create or delete CSV files
Recall factory setups
Save the current oscilloscope
settings in different format
with the same file name
Go to menu for external
memory operation(see table
2-49)
Go to disk manage menu
(see table 2-50)