YOKOGAWA DLM2000 Series User manual

IM 710105-02E
2nd Edition
Mixed Signal Oscilloscope
DLM2000 Series

i
IM 710105-02E
Thank you for purchasing the DLM2000 Series Mixed Signal Oscilloscope. This User’s Manual
explains how to use the DLM2000. To ensure correct use, please read this manual thoroughly before
beginning operation.
Keep this manual in a safe place for quick reference in the event a question arises.
List of Manuals
The following manuals, including this one, are provided as manuals for the DLM2000 series. Please
read all manuals.
Manual Title Manual No. Description
DLM2000 Series Mixed Signal
Oscilloscope Features Guide
IM 710105-01E The supplied CD contains the PDF file of this manual.
The manual explains the DLM2000 features.
DLM2000 Series Mixed Signal
Oscilloscope User’s Manual
IM 710105-02E This manual. The supplied CD contains the PDF file
of this manual. The manual explains how to operate
the DLM2000.
DLM2000 Series Mixed Signal
Oscilloscope Operation Guide
IM 710105-03E This guide explains the handling precautions and
basic operations of the DLM2000.
DLM2000 Series Mixed Signal
Oscilloscope Communication Interface
User’s Manual
IM 710105-17E The supplied CD contains the PDF file of this manual.
The manual explains the DLM2000 communication
interface features and instructions on how to use
them.
Notes
• The contents of this manual are subject to change without prior notice as a result of continuing
improvements to the instrument’s performance and functionality. The figures given in this manual
may differ from those that actually appear on your screen.
• Every effort has been made in the preparation of this manual to ensure the accuracy of its
contents. However, should you have any questions or find any errors, please contact your nearest
YOKOGAWA dealer.
• Copying or reproducing all or any part of the contents of this manual without the permission of
YOKOGAWA is strictly prohibited.
• The TCP/IP software of this product and the documents concerning it have been developed/created
by YOKOGAWA based on the BSD Networking Software, Release 1 that has been licensed from
the Regents of the University of California.
Trademark Acknowledgements
• Microsoft and Windows are registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
• Adobe and Acrobat are trademarks of Adobe Systems Incorporated.
• DLM is pending trademark of Yokogawa Electric Corporation.
• In this manual, the TM and ® symbols do not accompany their respective registered trademark or
trademark names.
• Other company and product names are registered trademarks or trademarks of their respective
holders.
Revisions
• 1st Edition: November 2008
• 2nd Edition: March 2009
2nd Edition: March 2009 (YK)
All Rights Reserved, Copyright ©2008, Yokogawa Electric Corporation

ii IM 710105-02E
DLM Models and Conventions Used in This Manual
Models Explained
This manual explains the DLM2000 series 4-channel models. Channel settings vary depending on the
model.
Notes and Cautions
The notes and cautions in this manual are categorized using the following symbols.
Improper handling or use can lead to injury to the user or damage to the
instrument. This symbol appears on the instrument to indicate that the user must
refer to the user’s manual for special instructions. The same symbol appears
in the corresponding place in the user’s manual to identify those instructions.
In the manual, the symbol is used in conjunction with the word “WARNING” or
“CAUTION.”
WARNING Calls attention to actions or conditions that could cause serious or fatal injury to
the user, and precautions that can be taken to prevent such occurrences.
CAUTION Calls attention to actions or conditions that could cause light injury to the user,
or cause damage to the instrument or user’s data, and precautions that can be
taken to prevent such occurrences.
Note Calls attention to information that is important for proper operation of the
instrument.
Unit
k Denotes 1000. Example: 100 kS/s (sample rate)
K Denotes 1024. Example: 720 KB (file size)

iii
IM 710105-02E
Key and Jog Shuttle Operations
Key Operations
How to Use Setup Menus That Appear When Keys Are Pressed
The operation after you press a key varies depending on the key that you press.
DISPLAY menu
CURSOR menu
ABCB
DJog shuttle setting menu
E
MODE menu
MATH/REF menu
F
G
A: A selection menu appears when you press the soft key.
Press the soft key that corresponds to the appropriate setting.
B: A related setup menu appears when you press the soft key.
C: The selected setting switches each time you press the soft key.
D: Displays a dialog box or a keyboard.
Use the jog shuttle and the select key to set values.
E: Pressing the soft key selects the item that you can control using the jog shuttle.
The jog shuttle setup menu, which appears at the right end of the setup menu, shows the
selected item. Use the select key to move between digits and set the number.
F: Pressing a key sets the item to the setting that corresponds to that key.
G: Selects which item to configure when configuring a feature that consists of two items that
operate with different settings, such as the MATH1 and MATH2 computation features.
How to Display the Setup Menus That Are Written in Purple below the Keys
In the explanations in this manual, “SHIFT+key name (written in purple)” is used to indicate the
following operation.
1. Press the SHIFT key. The SHIFT key illuminates to indicate that the keys are shifted.
Now you can select the setup menus written in purple below the keys.
2. Press the key that you want to display the setup menu of.
ESC key operation
If you press the ESC key when a setup menu or available settings are displayed, the screen returns
to the menu level above the current one. If you press the ESC key when the highest level menu is
displayed, the setup menu disappears. However, the jog shuttle setup menu remains displayed. If
you press the ESC key again, the jog shuttle setup menu disappears.

iv IM 710105-02E
Entering Values Using the RESET ( ) and SET ( ) Keys
When you use the jog shuttle to set a value, the jog shuttle setup menu shows a RESET key mark
or a SET key mark.
RESET Key Mark
If the RESET key mark is displayed, you can press the RESET key to reset the value to its default
value. (The value may not return to its default value depending on the DLM2000 condition.) The
default value is displayed next to the RESET key mark.
SET Key Mark
If there are two values that you need to set, the SET key mark appears. Press the SET key to select
which value you want to set using the jog shuttle. The jog shuttle mark in front of the selected value
is enlarged.
Like when the RESET key mark is displayed, you can press the RESET key to reset the value to its
default value.
Default value
Item under the control of the jog shuttle
RESET key mark SET key mark
How to Enter Values in Setup Dialog Boxes
1. Use the keys to display the appropriate setup dialog box.
2. Use the jog shuttle or the SET key ( ) to move the cursor to the appropriate item.
3. Press the SET key ( ). The operation varies depending on the selected item.
• A setup menu appears.
• A check box is selected or cleared.
• The item at the cursor is selected.
How to Clear Setup Dialog Boxes
Press the ESC key to clear the active setup dialog box.

v
IM 710105-02E
Entering Values and Strings
Entering Values
Using Dedicated Knobs
You can use the following dedicated knobs to enter values directly.
• POSITION knobs (VERTICAL and HORIZONTAL)
• SCALE knob (VERTICAL)
• TIME/DIV knob
• LEVEL knob (TRIGGER)
• ZOOM magnification knob
Using the Jog Shuttle
Select the appropriate item using soft keys, and change the value using the jog shuttle and the SET
key. This manual sometimes describes this operation simply as “using the jog shuttle.”
Note
Some items that you can set using the jog shuttle can be reset to their default values when you press the
RESET key.

vi IM 710105-02E
Entering Character Strings
Use the keyboard that appears on the screen to enter file names and comments. Use the jog shuttle
and the SET key to control the keyboard and enter characters.
Character insertion position
Confirm the
characters that you
have entered
Switch between
uppercase and
lowercase
Move the character
insertion position Delete the
previous
character
Delete all of
the characters
that you have
entered
Select from character strings
you entered previously
How to Operate the Keyboard
1. After bringing up the keyboard, use the jog shuttle to move the cursor to the character that you
want to enter. You can also move the SET key up, down, left, and right to move the cursor.
2. Press the SET key to enter the selected character.
• If a character string is already entered, use the arrow soft keys to move the cursor to the position
you want to insert characters into.
• Use the CAPS soft key to switch between uppercase and lowercase.
• Use the BS soft key to delete the previous character.
• Use the CLEAR soft key to clear all the entered characters.
3. Repeat steps 1 and 2 to enter all of the characters in the string.
Select on the keyboard to display a list of character strings that you have entered previously.
Use the jog shuttle to select a character string and press the SET key to enter the selected
character string.
4. Move the cursor to ENTER on the keyboard and press the SET key straight down or press the
ENTER soft key to confirm the character string and clear the keyboard.
Note
• @ cannot be entered consecutively.
• File names are not case-sensitive. Comments are case-sensitive. The following file names cannot be
used due to MS-DOS limitations:
AUX, CON, PRN, NUL, CLOCK, COM1 to COM9, and LPT1 to LPT9

vii
IM 710105-02E
Contents
DLM Models and Conventions Used in This Manual........................................................................ii
Key and Jog Shuttle Operations ...................................................................................................... iii
Entering Values and Strings..............................................................................................................v
Chapter 1 Vertical and Horizontal Control
1.1 Setting the Vertical Axis (Analog Signal) .......................................................................... 1-1
1.2 Setting the Vertical Axis (Logic Signal)............................................................................. 1-5
1.3 Setting the Horizontal Axis (Time Axis)............................................................................. 1-8
Chapter 2 Triggering
2.1 Setting the Trigger Mode and Trigger Hold-off Time......................................................... 2-1
2.2 Setting the Trigger Position and Trigger Delay................................................................. 2-2
Edge Triggering
2.3 Triggering on an Edge Trigger.......................................................................................... 2-3
Enhanced Triggering
2.4 Triggering on the OR of Multiple Edge Triggers ............................................................... 2-5
2.5 Triggering On Edge Conditions ........................................................................................ 2-6
2.6 Triggering on State Conditions ......................................................................................... 2-8
2.7 Triggering On Pulse Width ............................................................................................. 2-10
2.8 Triggering on State Width............................................................................................... 2-12
2.9 Triggering on CAN Bus Signals (Option)........................................................................ 2-15
2.10 Triggering on LIN Bus Signals (Option).......................................................................... 2-19
2.11 Triggering on UART Signals (Option)............................................................................. 2-22
2.12 Triggering on I2C Bus Signals (Option) .......................................................................... 2-25
2.13 Triggering on SPI Bus Signals (Option).......................................................................... 2-29
2.14 Triggering On User-Defined Serial Bus Signals ...........................................................................2-32
2.15 Triggering on a TV Trigger.............................................................................................. 2-35
B Triggering
2.16 Triggering on Combination Triggers (B TRIG)................................................................ 2-38
Action and GO/NO-GO
2.17 Setting the Action-On-Trigger Function .......................................................................... 2-40
2.18 Performing GO/NO-GO Determination........................................................................... 2-41
Chapter 3 Waveform Acquisition
3.1 Setting Conditions for Waveform Acquisition.................................................................... 3-1
3.2 Acquiring Waveforms ....................................................................................................... 3-2
Chapter 4 Display
4.1 Setting Display Conditions ............................................................................................... 4-1
4.2 Using the Accumulate Feature ......................................................................................... 4-2
4.3 Using the Snapshot and Clear Trace Features ................................................................ 4-3
4.4 Adjusting the Backlight ..................................................................................................... 4-4
Chapter 5 XY Display
5.1 Displaying XY Waveforms ................................................................................................ 5-1
5.2 Performing Cursor Measurements and Area Calculations ............................................... 5-2

viii IM 710105-02E
Contents
Chapter 6 Computed and Reference Waveforms
6.1 Setting the Computation Mode......................................................................................... 6-1
6.2 Performing Addition, Subtraction, and Multiplication ........................................................ 6-2
6.3 Performing Filter Functions .............................................................................................. 6-3
6.4 Performing Integration...................................................................................................... 6-5
6.5 Performing Count Computations ...................................................................................... 6-6
6.6 Setting Labels, Units, and Scaling.................................................................................... 6-7
6.7 Loading Reference Waveforms ........................................................................................ 6-8
6.8 Performing User-Defined Computations (Optional).......................................................... 6-9
Chapter 7 FFT
7.1 Displaying FFT Waveforms .............................................................................................. 7-1
7.2 Measuring FFT Waveforms .............................................................................................. 7-2
Chapter 8 Cursor Measurements
8.1 ΔT Cursor Measurements................................................................................................. 8-1
8.2 ΔV Cursor Measurements ................................................................................................ 8-2
8.3 ΔT&ΔV Cursor Measurements ......................................................................................... 8-3
8.4 Marker Cursor Measurements (Marker) ........................................................................... 8-4
8.5 Angle Cursor Measurements (Degree) ............................................................................ 8-5
Chapter 9 Automated Measurement of Waveform Parameters
9.1 Automatically Measuring Waveform Parameters ............................................................. 9-1
9.2 Processing Statistics on Automatically Measured Values ................................................ 9-4
9.3 Measuring Enhanced Parameters.................................................................................... 9-7
Chapter 10 Zooming in on Waveforms
10.1 Zooming in on or out from Waveforms ........................................................................... 10-1
10.2 Zooming in on or out from Waveforms in the Vertical Direction ..................................... 10-2
Chapter 11 Searching Waveforms
11.1 Searching for Edges........................................................................................................11-1
11.2 Searching for Edges Using Conditions............................................................................11-4
11.3 Searching for State Conditions........................................................................................11-7
11.4 Searching for Pulse Width.............................................................................................11-10
11.5 Searching for State Width .............................................................................................11-13
Chapter 12 Analyzing and Searching Serial Bus Signals
12.1 Analyzing and Searching CAN Bus Signals ................................................................... 12-1
12.2 Analyzing and Searching LIN Bus Signals ..................................................................... 12-5
12.3 Analyzing and Searching UART Signals ........................................................................ 12-9
12.4 Analyzing and Searching I2C Bus Signals.................................................................... 12-14
12.5 Analyzing and Searching SPI Bus Signals................................................................... 12-18
12.6 Analyzing and Searching User-Defined Serial Bus Signals ......................................... 12-23
Chapter 13 Waveform Histogram Display
13.1 Displaying Waveform Histograms .................................................................................. 13-1
13.2 Measuring Histogram Parameters.................................................................................. 13-2

ix
IM 710105-02E
Contents
Chapter 14 Power Supply Analysis (Power Analysis Option)
14.1 Power Supply Analysis Types......................................................................................... 14-1
14.2 Analyzing Switching Loss............................................................................................... 14-2
14.3 Performing Safe Operating Area Analysis ...................................................................... 14-4
14.4 Performing Harmonic Analysis ....................................................................................... 14-5
14.5 Measuring the Joule Integral .......................................................................................... 14-6
Chapter 15 Displaying and Searching History Waveforms
15.1 Displaying History Waveforms........................................................................................ 15-1
15.2 Searching History Waveforms ........................................................................................ 15-3
Chapter 16 Printing and Saving Screen Captures
16.1 Loading Roll Paper Into the Built-In Printer (Optional) ................................................... 16-1
16.2 Printing on the Built-in Printer (Optional)........................................................................ 16-3
16.3 Printing on a USB Printer ............................................................................................... 16-4
16.4 Printing on a Network Printer (Optional)......................................................................... 16-5
16.5 Saving Screen Captures to Files.................................................................................... 16-6
Chapter 17 Saving and Loading Data
17.1 Connecting USB Storage Media to the USB Port .......................................................... 17-1
17.2 Saving Waveform Data................................................................................................... 17-2
17.3 Saving Setup Data ......................................................................................................... 17-4
17.4 Saving Other Types of Data ........................................................................................... 17-5
17.5 Loading Waveform Data................................................................................................. 17-7
17.6 Loading Setup Data........................................................................................................ 17-8
17.7 Loading Other Types of Data.......................................................................................... 17-9
17.8 File Operations ..............................................................................................................17-11
Chapter 18 Ethernet Interface (Optional)
18.1 Connecting the DLM2000 to a Network ......................................................................... 18-1
18.2 Configuring TCP/IP Settings........................................................................................... 18-3
18.3 Accessing the DLM2000 from a PC (FTP Server).......................................................... 18-4
18.4 Monitoring the DLM2000 Display from a PC (Web Server)............................................ 18-5
18.5 Connecting to a Network Drive....................................................................................... 18-7
18.6 Configuring Mail Transmission (SMTP client function)................................................... 18-8
18.7 Using SNTP to Set the Date and Time ........................................................................... 18-9
18.8 Setting a Network Printer ............................................................................................. 18-10
Chapter 19 Rear Panel Input and Output
19.1 External Trigger Input (TRIG IN/EXT) ............................................................................ 19-1
19.2 Trigger Output (TRIG OUT)............................................................................................ 19-2
19.3 Video Signal Output (VIDEO OUT) ................................................................................ 19-4
19.4 GO/NO-GO Signal Output.............................................................................................. 19-5
Chapter 20 Other Operations
20.1 Changing the Message Language, Menu Language, USB Keyboard Language, and
Turning the Click Sound On or Off ................................................................................. 20-1
20.2 Configuring the Menu Display ........................................................................................ 20-2
20.3 Viewing Setup Information (Overview) ........................................................................... 20-4
20.4 Using the DLM2000 as a USB Storage Device.............................................................. 20-5

xIM 710105-02E
Chapter 21 Troubleshooting, Maintenance, and Inspection
21.1 If a Problem Occurs........................................................................................................ 21-1
21.2 Messages and Corrective Actions .................................................................................. 21-2
21.3 Carrying Out Self-Tests (Selftest)................................................................................... 21-6
21.4 Viewing System Information (Overview)........................................................................ 21-8
21.5 Formatting Internal Memory ........................................................................................... 21-9
21.6 Recommended Part Replacement ............................................................................... 21-10
Appendix
Appendix 1 How to Calculate the Area of a Waveform .........................................................App-1
Appendix 2 User-Defined Computation.................................................................................App-3
Appendix 3 ASCII Data File Format ....................................................................................App-10
Appendix 4 USB Keyboard Key Assignments..................................................................... App-11
Appendix 5 Features and Firmware Versions Covered by This Manual .............................App-13
Index
Contents

1-1
IM 710105-02E
Chapter 1 Vertical and Horizontal Control
1.1 Setting the Vertical Axis (Analog Signal)
This section explains the following settings (which are related to the vertical axis for analog signals):
• Waveform display on and off
• Input coupling
• Probe attenuation
• Inverted waveform display on and off
• Linear scaling
• Label display
• Bandwidth
• Offset
• Offset cancel on and off (UTILITY menu)
• Vertical scale
• Vertical position
► “Vertical Axis (Analog Signal)” in the Features Guide.
CH Menu
Press a key from CH1 to CH4 to display the following menu.
Set the label display
Set the linear scaling
Switch the inverted waveform display on or off
Set the probe attenuation
Set the input coupling
Switch the waveform display on or off
Set the bandwidth
Set the offset
(press RESET to set to 0 V)
Note
• Channel keys (CH1 to CH4) whose waveforms are displayed are illuminated. You can press channel keys
that are not illuminated to turn the waveform display on. You can press channel keys that are illuminated
turn the waveform display off.
• When interleave mode (see section 3.1 for details) is on, you cannot display the waveforms for CH2 and
CH4.

1-2 IM 710105-02E
1.1 Setting the Vertical Axis (Analog Signal)
Setting the Input Coupling (Coupling)
AC: Only displays the waveform produced from the input signal’s AC component.
DC Displays the waveform produced from both the DC and AC components of the input signal
through 1 MΩ.
DC50: Displays the waveform produced from both the DC and AC components of the input signal
through 50 Ω.
GND: Displays the ground level.
Input Coupling Settings and Frequency Response
The frequency response when the DLM2000 is set to AC, DC, or DC50 is shown below.
Please note that when set to AC, the DLM2000 does not acquire low frequency signals or low
frequency components, as seen in the following figure.
0 dB
–3 dB
500 MHz*
Attenuation
0 dB
–3 dB
500 MHz*
Attenuation
With a 1:1 probe and a frequency less than or equal to 10 Hz
With a 10:1 probe and a frequency less than or equal to 1 Hz
Input frequency Input frequency
AC 1 MΩDC 50 Ωor DC 1 MΩ
* The high-frequency –3 dB point differs based on the model and the voltage scale settings.
CAUTION
• The maximum input voltage for 1 MΩinput is 150 Vrms when the frequency is less than or
equal to 1 kHz. Applying a greater voltage may damage the input section. For frequencies
above 1 kHz, damage may occur even if the voltage is less than 150 Vrms.
• The maximum input voltage for 50 Ωinput is 5 Vrms or 10 Vpeak. Applying voltage greater
than either of these limits may damage the input section.

1-3
IM 710105-02E
1.1 Setting the Vertical Axis (Analog Signal)
Setting the Probe Attenuation (Probe)
Press the Probe soft key to display the following menu.
Set the deskew value (set using the jog shuttle)
Execute the automatic zero adjustment of current probes
(can only be executed when current probes are connected)
Set the attenuation (set using the jog shuttle)
Set the probe type (voltage and current)
Set the attenuation or deskew
Execute the demagnetization and automatic zero adjustment
of current probes (can only be executed when a YOKOGAWA
PBC100 or PBC050 is connected)
Note
When a current probe with YOKOGAWA probe interface (such as a PBC100 or PBC050 probe) is connected
to the DLM2000, you can execute demagnetization and automatic zero adjustment from the DLM2000.
When you demagnetize and perform automatic zero adjustment on a current probe, do not clamp the
conductor. If you demagnetize a current probe while the conductor is clamped, the current that flows through
the conductor as a result of demagnetization may damage components of the DUT circuitry.
Setting the Linear Scaling (Linear Scale)
Press the Linear Scale soft key to display the following menu.
Set the scaling coefficient A and offset B
Set the unit
Turn linear scaling on or off
Setting the Label Display (Label)
Press the Label soft key to display the following menu.
Set the label
Turn labels on or off
Setting the Bandwidth
Press the Bandwidth soft key. The jog shuttle now controls the Bandwidth setting.
Set the bandwidth

1-4 IM 710105-02E
1.1 Setting the Vertical Axis (Analog Signal)
UTILITY Preference Menu
Press UTILITY, and then press the Preference soft key to display the following menu.
Turn offset cancel on or off
Turning Offset Cancel On or Off (Offset Cancel)
ON: The offset is subtracted from the input signal when cursor measurements, computations, and
other operations are performed.
OFF: The offset is not subtracted from the input signal when cursor measurements, computations,
and other operations are performed.
Setting the Vertical Scale (SCALE)
Press one of the keys from CH1 to CH4 to select the channel that you want to set the vertical scale for.
The LED between the SCALE and POSITION knobs illuminates in the color assigned to the selected
channel (yellow, green, magenta, or cyan).
Turn the SCALE knob to set the vertical scale.
If you push the SCALE knob, the FINE indicator illuminates, and you can set the vertical scale with
higher resolution.
Display the vertical scale and input impedance for each channel
Setting the Waveform Vertical Position (POSITION)
Press one of the keys from CH1 to CH4 to select the channel that you want to set the vertical position
for.
The LED between the SCALE and POSITION knobs illuminates in the color assigned to the selected
channel (yellow, green, magenta, or cyan).
Turn the POSITION knob to set the vertical position.
You can set the vertical position to 0 V by pressing the knob.
VERTICAL
POSITION
PUSH
0DIV
SCALE
PUSH
FINE
1
2
3
4
LOGIC
When the FINE indicator is illuminated, you can set
the vertical position with higher resolution.
(Press the push knob to turn off the FINE indicator)
Illuminates in the color assigned to the selected channel
POSITION knob
SCALE knob
Note
Preview
• If you change the vertical scale when waveform acquisition is stopped, the waveform is displayed
expanded or reduced vertically.
• If you change the vertical position when waveform acquisition is stopped, only the waveform display
position changes.

1-5
IM 710105-02E
1.2 Setting the Vertical Axis (Logic Signal)
This section explains the following settings (which are related to the vertical axis for logic signals):
• Display on and off, label name, and threshold level for each bit
• Bus display, format, and bit order
• Noise rejection
• Threshold level
• Deskew
► “Vertical Axis (Logic Signal)” in the Features Guide.
LOGIC Menu
Press LOGIC to display the following menu.
Set the threshold level or deskew value
Set the deskew value
Set the threshold level
Set the threshold level for each bit
(only when using a 701989 logic probe)
Set the noise rejection ( or )
(only when using a 701989 logic probe)
Switch the waveform display on or off
Set each bit
Configure the display
Note
• If the LOGIC key is not illuminated, you can press it to turn the waveform display on. Logic signal
waveforms are displayed in the CH4 waveform display area.
• If the LOGIC key is illuminated, you can press it to turn the waveform display off.
Setting the Bits (Bit Setup)
Press the Bit Setup soft key to display the following screen.
Turn on or off the display for all bits
Set the threshold level
(set each bit when using a 701989 logic probe
and Threshold Type is set to Each)
Turn the display on or off and set the label for each bit

1-6 IM 710105-02E
1.2 Setting the Vertical Axis (Logic Signal)
Configuring the Display (Display Setup)
Bundle: Set this to ON or OFF to show or not show the bus display, respectively.
Format: Specify Hex (hexadecimal) or Bin (binary) for the bus display format.
Bit Order: Specify the bit order for the bus display.
Setting the Threshold Level for Each Bit (Threshold Type)
When using a 701989 logic probe, you can select whether or not to set the threshold level for each bit.
All: Specify that all bits have a common threshold level.
Each: Specify that the threshold level for each bit will be set individually.
Note
For models 701980, 701981, and 701988, Threshold Type is fixed to All.
Setting the Threshold Level (Threshold)
You can select the threshold level from one of the following presets. You can also use the jog shuttle to
change the threshold level.
CMOS(5 V), CMOS(3.3 V), CMOS(2.5 V), CMOS(1.8 V), and ECL
Depending on the probe you are using and the Threshold Type, the setup menu differs as follows.
When Using a 701989 Logic Probe with Threshold Type Set to Each
Set the threshold level for each bit
Specify the bit that you want to set the threshold level for
When Using a 701989 Logic Probe with Threshold Type Set to All and Other Logic Probes
Set the common threshold level for all bits
Deskew (Deskew)
Set the adjustment values for the time offsets (skew) between the logic signal and other signals, which
are caused by the use of different types of probes. Deskewing is performed on all eight bits collectively.

1-7
IM 710105-02E
1.2 Setting the Vertical Axis (Logic Signal)
Setting the Display Size (SCALE)
Press LOGIC, the SCALE knob now controls the LOGIC setting.
Turn the SCALE knob to set the display size.
Setting the Vertical Position (POSITION)
Press LOGIC, the SCALE knob now controls the LOGIC setting.
Turn the POSITION knob to set the vertical position.
VERTICAL
POSITION
PUSH
0DIV
SCALE
PUSH
FINE
1
2
3
4
LOGIC
POSITION knob
SCALE knob
Illuminates in the color assigned to the LOGIC channel (cyan)

1-8 IM 710105-02E
1.3 Setting the Horizontal Axis (Time Axis)
Set the time per grid (1 division) displayed on the screen.
Turn the TIME/DIV knob to set the value.
If you change the TIME/DIV setting while waveform acquisition is stopped, the waveform is displayed
expanded or reduced along the time axis.
► “Horizontal Axis (Time Axis)” in the Features Guide.
HORIZONTAL
POSITION
PUSH
50%
0 s
TIME/DIV
DELAY
TIME/DIV knob
See section 2.2

2-1
IM 710105-02E
2.1 Setting the Trigger Mode and Trigger Hold-off
Time
This section explains the following settings (which are used when updating the displayed waveform):
• Trigger mode
• Hold-off time
► “Trigger Mode (Trigger Mode)” and “Trigger Hold-off (Holdoff)”
in the Features Guide
MODE Menu
Press MODE to display the following menu.
Set the trigger mode
Set the number of waveforms to acquire
Set the hold-off time
When you select N Single
Setting the Trigger Mode (Mode)
Auto: If the trigger conditions are met within 100 ms, the DLM2000 updates the displayed
waveforms on each trigger occurrence. If not, the DLM2000 automatically updates the
displayed waveforms. If the time axis is set to a value that causes the display to switch
to roll mode, roll mode display will be enabled.
Auto Level: If a trigger occurs before a timeout, the DLM2000 updates the waveform in the same
way that it does in Auto mode. If a trigger does not occur before a timeout, the DLM2000
automatically changes the trigger level to the center value of the trigger source
amplitude, triggers on that value, and updates the displayed waveform.
Normal: The DLM2000 only updates the waveform display when the trigger conditions are met.
N Single: The DLM2000 acquires signals each time the trigger conditions are met until a specified
number of signals have been acquired, and then displays all of the acquired signals.
Note
Single Mode
There is also a Single trigger mode in which the DLM2000 updates the displayed waveform once and stops
signal acquisition when the trigger conditions are met. Press SINGLE on the front panel to execute Single
Mode waveform acquisition.
Setting the Hold-off Time (Holdoff)
The trigger hold-off feature temporarily stops the detection of the next trigger once a trigger has
occurred.
Chapter 2 Triggering