Chauvin Arnoux Multimetrix XDO2025 User manual

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Group CHAUVIN ARNOUX
190, rue Championnet
F - 75018 - PARIS
Tel. [phone] - Fax [phone]
X03583A00 - Ed. 01 - 09/10

Content
2 Dual-Channel Digital Oscilloscopes
Content
General Instructions
Introduction.......................................................................................4
Precautions and safety measures ..................................................4
Symbols on instrument....................................................................5
Guarantee, Repair, Servicing ..........................................................5
Instrument Description
Front panel........................................................................................6
XDO2025 - XDO2040...............................6
Rear panel .......................................................................................10
XDO2025 - XDO2040.............................10
Functional Description
AUTO Setup ..........................................................................................................................................11
Auto Setup, screen, symbol ..........................................................11
Autoset function menu.............................12
VERTICAL System................................................................................................................................13
CH1 - CH2 Channel.........................................................................13
CH1 & CH2 function menus ........................ 14
Knobs in the Vertical mode...........................................................15
Vertical “POSITION” knob.............................15
Volts/div knob.............................15
MATH functions..............................................................................16
MATH function menu.............................16
MATH function instruction.............................16
FFT Spectrum Analyser .................................................................17
FFT function menus.............................17
Select FFT window.............................17
Measuring an FFT Spectrum using cursors.............................18
Measuring an FFT amplitude.............................18
Measuring FFT frequency.............................19
Using REF .......................................................................................20
REF function menu.............................20
HORIZONTAL System ..........................................................................................................................21
Horizontal System ..........................................................................21
Horizontal system function menu.............................21
Knobs in Horizontal mode.............................................................22
Horizontal “POSITION” knob.............................22
Volts/div knob.............................22
Display scan mode.............................22
Delayed............................................................................................22
TRIGGER System .................................................................................................................................23
Trigger System ...............................................................................23
Signal Source.............................23
Edge Trigger ...................................................................................23
Edge Trigger function menu.............................23
Trigger Setup function menu.............................24
Pulse Trigger...................................................................................25
Pulse Trigger function menus.............................25
Video Trigger ..................................................................................27
Video Trigger function menus.............................27
Slope Trigger ..................................................................................29
Slope Trigger function menus.............................29

General instructions
Dual-Channel Digital Oscilloscopes 3
Content (cont’d)
Alternative Trigger..........................................................................31
Edge Trigger function menu.............................31
Pulse Trigger function menus.............................32
Video Trigger function menus.............................33
Slope Trigger function menus ............................34
Trigger Holdoff................................................................................36
ACQUISITION System ..........................................................................................................................37
Acquiring Signal System ...............................................................37
Acquiring signal function menu.............................37
DISPLAY System ..................................................................................................................................38
Display System...............................................................................38
Display system function menus.............................38
X-Y Format ......................................................................................41
MEASURE System................................................................................................................................42
Scale Measurement........................................................................42
Cursor Measurement......................................................................42
Manual cursor function menu.............................42
Track mode function menu.............................43
Auto mode function menu.............................44
Auto Measurement .........................................................................45
Auto measure function menu.............................45
Auto mode function menu : Voltage measure.............................45
Auto mode function menu : Time measure.............................46
Auto mode function menu : Delay measure.............................46
All measurement function menu.............................47
Introduction of the measure type.............................47
STORAGE System................................................................................................................................49
Storage System...............................................................................49
Save / Recall Interface.............................49
Save / Recall....................................................................................50
Save / Recall setups to device.............................50
Save / Recall setups to USB flash drive.............................51
Recall factory setup.............................53
Save / Recall waveform..................................................................53
Save / Recall waveform to device.............................53
Save / Recall waveform to USB flash drive.............................54
Save picture ....................................................................................56
Save / Recall Reference Waveform...............................................57
UTILITY System....................................................................................................................................58
Utility System..................................................................................58
System status .................................................................................62
Print..................................................................................................62
Update Firmware ............................................................................64
Pass/Fail..........................................................................................65
Mask Setting ...................................................................................67
Waveform Record...........................................................................69
Playback..........................................................................................70
Recorder..........................................................................................71
Technical Specifications...............................................................................................................................74
General Specifications..................................................................................................................................77

General Instructions
4 Dual-Channel Digital Oscilloscopes
General Instructions
Introduction You have just acquired a 2-channel digital oscilloscope :
•XDO2025, 25 MHz or
•XDO2040, 40 MHz.
This 2-channel oscilloscope provides a set of powerful features for a
wide range of applications such as production, education, maintenance,
service, research and development.
Congratulations for your choice and thank you for your trust in the
quality of our products.
This instrument conforms to safety standard NF EN 61010-1 (2001),
single insulation, and relative to electronic measurement instruments.
To obtain optimum service, read these instructions with care and comply
with the precautions for use.
Failure to comply with these warnings and/or user instructions is liable to
cause damage to the equipment and/or its components. This could be
dangerous to the user.
Precautions and
safety measures
•This instrument has been designed for use:
- indoors,
- in a pollution degree 2 environment,
- at an altitude of less than 2000 m,
- at a temperature included between 10°C and 40°C
- with relative humidity up to 95 %.
•It can be supplied by a 240 V CAT II network.
definition of
installation
categories
(cf. CEI 664-1)
CAT I: CAT I circuits are protected by devices designed to minimize
transient overvoltages at a low level.
E.g.: protected electronic circuits
CAT II :CAT II circuits are domestic or similar equipment power supply
circuits that can include average value transient overvoltages.
E.g.: power supply to domestic appliances and portable tools.
CAT III : CAT III circuits are circuits for power equipment power supplies
which may include high transient overvoltages.
E.g.: machine or industrial apparatus power supply.
CAT IV : CAT IV circuits are circuits that can include very high transient
overvoltages.
E.g.: energy inputs
before use •Comply with environment and storage conditions.
during use
•Read carefully all the notes preceded by the symbol .
•Connect the instrument to an outlet with a ground pin.
•Be sure not to obstruct the aeration points.
•As a safety measure, use only suitable cords and accessories supplied
with the instrument or type approved by the manufacturer.
•When the instrument is connected to the measurement circuits, never
touch an unused terminal.

General instructions
Dual-Channel Digital Oscilloscopes 5
General Instructions (cont’d)
Symbols on
instrument
Warning: Risk of danger.
Refer to the operating manual to find out the nature of the
potential hazards and the action necessary to avoid such
hazards.
Selective sorting of waste for recycling electric and electronic
materials.
In accordance with the WEEE 2002/96/EC directive: must not
be treated as household waste.
Earth symbol
USB symbol
Fuse symbol
European Conformity
Guarantee
This equipment is guaranteed for 1 year against any material defect or
manufacturing faults, in conformity with the general conditions of sale.
During this period, the manufacturer may only repair the equipment. He
reserves the right to carry out repair or replacement of all or part of the
equipment.
If the equipment is returned to the manufacturer, forward transport is at the
expense of the customer.
The guarantee does not apply in the event of:
•unsuitable use of the equipment or by association with incompatible
equipment
•modification of the equipment without the explicit authorization of
the manufacturer technical services
•operation by a person not approved by the manufacturer
•adaptation to a specific application not provided for in the
equipment definition or in the operating instructions impact
•fall or flooding.
Repair
Return your instrument to your distributor for any work to be done within or
outside the guarantee.
Servicing •Turn the instrument off.
•Clean it with a damp cloth and soap.
•Never use abrasive products or solvents.
•Allow drying before any further use.

Instrument Description
6 Dual-Channel Digital Oscilloscopes
Instrument Description
Front panel
XDO2025
XDO2040
16
15
17
11
9
10
7
8
18
14
13
12
6
5
4
3
2
1
16
15
3
10
9
11
8
7
18
14
13
12
1
2
17
4
5
6

Instrument Description
Dual-Channel Digital Oscilloscopes 7
Instrument Description (cont’d)
Front panel (cont’d)
1 - POWER
Power ON / Power OFF
2 - USB
USB HOST interface connection
3 - MENU
MENU ON / OFF
4 - CH1 - CH2
Input connectors for waveform display
5 - EXT TRIG
Input connector for an external trigger source. Use the Trigger Menu to
select the “Ext” or “Ext/5” trigger source.
6 - PROBE
Voltage probe compensation output and ground. Use to electrically
match the probe to the oscilloscope input circuit.
7 - VERTICAL
Vertical system key pad (see p. 7 and 12).
8 - HORIZONTAL
Horizontal system key pad (see p. 7 and 20).
9 - TRIGGER
Trigger system key pad (see p. 8 and 22).
10 - RUN / STOP
Continuously acquires waveforms or stops the acquisition.
11 - AUTO
Automatically sets the oscilloscope controls to produce a usable display
of the input signals.
12 - SINGLE
Acquires a single waveform and then stops.
13 - HELP
Enters the online help system.
14 - DEFAULT SETUP
Recalls the factory setup (language, saved files, contrast, calibration
data).
15 - MENU
Menu key pad (see p. 8).
16 - UNIVERSAL
KNOB
Adjusts holdoff, frequency upper and lower limit (and that of the digital
filter), x mask and y mask in pass / fail function, record or play back
frame in waveform record menu, storage position of setups,
waveforms, pictures. This moves cursors, sets pulse width and video
linage, selects menu option.
17 - PRINT
Print menu (see p. 61).
18 - Keys (x 5)
Menu scroll keys

Instrument Description
8 Dual-Channel Digital Oscilloscopes
Instrument Description (cont’d)
VERTICAL System
19 - POSITION
Volt/div. knobs (see p. 14).
20 - CH1 - CH2 keys
Channel 1, Channel 2 menu control button
21 - MATH
MATH function control button
22 - REF
Reference waveforms control button, saves waveforms to a non volatile
memory.
23 - CH1 - CH2 knobs
Vertical position knobs (see p. 14).
HORIZONTAL System
24 - POSITION
S/div knob (see p. 21).
25 - HORI MENU
Displays the horizontal menu.
26 - HORI knob
Horizontal position knob (see p. 21).
TRIGGER System
27 - TRIG MENU
Activates the Trigger menu.
28 - SET TO 50%
Stabilizes a waveform quickly.
29 - FORCE
Use the FORCE button to complete the current waveform acquisition
whether the oscilloscope detects a trigger or not. This is useful for Single
acquisitions and Normal trigger mode.
30 - LEVEL knob
Sets the corresponding signal voltage of trigger point, press the knob to set
the trigger level to zero.
20
23
22
21
23
26
24
25
27
28
29
30
19
20
19

Instrument Description
Dual-Channel Digital Oscilloscopes 9
Instrument Description (cont’d)
MENU key pad
31 - CURSORS
Displays the cursor menu (see p. 41).
Vertical Position controls adjust cursor position while displaying the
Cursor Menu and the cursors are activated. Cursors remain displayed
(unless the “Type” option is set to “Off”) after leaving the Cursor menu
but are not adjustable.
32 - ACQUIRE
Displays the Acquiring signal system (see p. 35).
33 - SAVE/RECALL
Displays the Save/Recall Menu for setups and waveforms (see p. 48).
34 - MEASURE
Displays the Automatic Measurement menu (see p. 41).
35 - DISPLAY
Displays the Display menu (see p. 37).
36 - UTILITY
Displays the Utility system (see p. 57).
33
36
32
31
35
34

Instrument Description
10 Dual-Channel Digital Oscilloscopes
Instrument Description (cont’d)
Rear panel
XDO2025
37 - Pass / Fail
PASS / FAIL output
38 - RS 232
RS 232 connector
39 - USB
Back USB connector
40 - Plug
Power input connector
XDO2040
41 - Pass / Fail
PASS / FAIL output
42 - RS 232
RS 232 connector
43 - USB
Back USB connector
44 - Plug
Power input connector
40
43
42
44
41
38
37
39

Functional Description
Dual-Channel Digital Oscilloscopes 11
Functional Description
AUTO Setup
Auto Setup
Autoset determines the trigger source based on the following conditions:
●If multiple channels have signals: channel with the lowest frequency
signal.
●No signals found: the lowest-numbered channel displayed when
Autoset was invoked.
●No signals found and no channels displayed: the oscilloscope will
display and use channel 1.
Input a signal to Channel 1, press the “Auto” button.
Multi-cycle sine Auto set the screen and display
several cyc signal.
Single-cycle sine Set the screen and auto display
single cyc signal.
Rising edge Auto set and show the rising
time.
Falling edge Auto set and show the falling
time.
Undo Setup Causes the oscilloscope to recall
the previous setup.

Functional Description
12 Dual-Channel Digital Oscilloscopes
Functional Description
AUTO Setup (cont’d)
Autoset
function menu
Function Setting
Acquire Mode Adjusted to Sampling
Display Format Y-T
Display Type Set to Dots for a video signal, set to Vectors for
an FFT spectrum; otherwise, unchanged
Vertical
Coupling Adjusted to DC or AC according to the input signal
Bandwidth
Limit Off (full)
V/div Adjusted
VOLTS/DIV
adjustability Coarse
Signal inverted Off
Horizontal
position Centre
S/div Adjusted
Trigger type Edge
Trigger source Auto detect the channel which has the input
signal
Trigger slope Rising
Trigger mode Auto
Trigger
coupling DC
Trigger holdoff Minimum
Trigger level Set to 50%

Functional Description
Dual-Channel Digital Oscilloscopes 13
Functional Description
VERTICAL System
CH1 - CH2 Channel
CH1 & CH2
function menu 1
Option Setting Description
Coupling DC
AC
GND
DC passes both AC and DC components of
the input signal.
AC blocks the DC component of the input
signal and attenuates signals below 10 Hz.
GND disconnects the input signal.
BW limit
(XDO2040
only)
On
Off Limits the bandwidth to reduce display
noise; filters the signal to reduce noise and
other unwanted high frequency
components.
Volts/Div
Coarse Fine Selects the resolution of the Volts/Div knob Coarse defines a 1-2-5 sequence.
Fine changes the resolution to small steps
between the coarse settings
(higher than 20 MHz are obstructed).
Probe 1 x
5 x
10 x
100 x
500 x
1000 x
Set to match the type of probe you are
using to ensure correct vertical readouts.

Functional Description
14 Dual-Channel Digital Oscilloscopes
Functional Description
VERTICAL System (cont’d)
CH1 & CH2
function menu 2
Option Setting Description
Invert
on off
Turn on invert function.
Turn off invert function.
Turn the “Universal knob” to adjust them.
Digital
Filter Press this button to enter the “Digital Filter menu”.
Digital filter
function menu
Option Setting Description
Digital
Filter on
off
Turn on the digital filter.
Turn off the digital filter.
Turn the “Universal knob” to adjust them.
Type
Setup as LPF (Low Pass Filter).
Setup as HPF (High Pass Filter).
Setup as BPF (Band Pass Filter).
Setup as BRF (Band Reject Filter).
Upper_limit
Turn the “Universal” knob to set upper limit.
Lower_limit Turn the “Universal” knob to set lower limit.
Return Return the digital filter main menu.

Functional Description
Dual-Channel Digital Oscilloscopes 15
Functional Description
VERTICAL System (cont’d)
Knobs in the
« VERTICAL » mode
Vertical “POSITION”
knob
1. Use the Vertical “POSITION” knobs to move the channel waveforms
up or down on the screen.
2. When you adjust the vertical position of channels waveforms, the
vertical position information will be displayed on the bottom left of
screen.
3. Press the vertical “POSITION” knob to set the vertical position to
zero.
Volts/div knob
1. Use the “Volts/div” knobs to control how the oscilloscope amplifies or
attenuates the source signal of channel waveforms. When you turn
the “volts/div” knob, the oscilloscope increases or decreases the
vertical size of the waveform on the screen with respect to the
ground level;
2. When you press the “Volt/div” Knob, you can switch “Volt/div” option
between “Coarse” and “Fine”. The vertical scale is ensured by the
1-2-5 step in Coarse mode. In the fine mode, the knob changes the
Volts/Div scale into small steps between the coarse settings.

Functional Description
16 Dual-Channel Digital Oscilloscopes
Functional Description
VERTICAL System (cont’d)
MATH functions
This shows the results after +, -, ∗and FFT operation of the CH1 and
CH2.
Press the MATH button to display the waveform math operations.
Function Setting Description
Operation +, -, *, FFT Choose MATH operations.
CH1 Invert on
off
Invert the CH1 waveform.
Turn off CH1 Invert function.
CH2 Invert on
off
Invert the CH2 waveform.
Turn off CH2 Invert function.
By rotating the universal knob to adjust the
vertical position of waveform after
operation
MATH
function menu
By rotating the universal knob to adjust the
vertical range of waveform after operation
MATH function
instruction
Operation Setting Description
+ CH1+CH2 CH1 adds CH2.
CH1-CH2 CH2 is subtracted from CH1.
-
CH2-CH1 CH1 is subtracted from CH2.
*CH1*CH2 CH1 multiplies CH2.
CH1/CH2 CH1 divides CH2.
/
CH2/CH1 CH2 divides CH1.
FFT Fast Fourier Transform.

Functional Description
Dual-Channel Digital Oscilloscopes 17
Functional Description
VERTICAL System (cont’d)
FFT Spectrum
Analyser
The FFT process mathematically converts a time-domain signal into its
frequency components.
You can take two measurements on FFT spectrums: magnitude (in dB)
and frequency (in Hz).
FFT function menu 1
FFT Option Setting
Description
Source CH1
CH2 Select this channel as the FFT source.
Window Hanning
Hamming
Rectang.
Blackman
Select FFT window types.
FFT ZOOM 1 x
2 x
5 x
10 x
Changes the horizontal magnification of
the FFT display.
Uses cursors to take measurements of
the FFT spectrum.
FFT function menu 2
Select FFT window
Window Speciality Satisfied Test content
Rectangular
Best frequency resolution, worst magnitude resolution.
This is essentially the same
as no window.
Symmetric transients or
bursts.
Equal-amplitude sine
waves with fixed
frequencies. Broadband
random noise with a
relatively slowly varying
spectrum.
Hanning
Hamming Better frequency, poorer magnitude accuracy than
Rectangular. Hamming has
slightly better frequency
resolution than Hanning.
Sine, periodic, and
narrow-band random
noise. Asymmetric
transients or bursts.
Blackman Best magnitude, worst
frequency resolution. Single frequency waveforms, to find higher
order harmonics.
FFT Option Setting
Description
Vrms Set Vrms to be the Vertical Scale
unit.
Scale
dBVrms Set dBVrms to be the vertical
Scale unit.
Display
Split
Full screen
Display FFT waveform on half
screen.
Display FFT waveform on full
screen.

Functional Description
18 Dual-Channel Digital Oscilloscopes
Functional Description
VERTICAL System (cont’d)
Measuring an FFT
Spectrum using
cursors
You can take two measurements on FFT spectrums : magnitude (in dB)
and frequency in Hz.
Measuring an
FFT amplitude
Once viewed the spectrum :
1. Press the “CURSOR” button to enter “Cursor” menu.
2. Press “Cusor Mode” to select “Manual”.
3. Press “Type” to select “Voltage”.
4. Press “Source” to select “MATH”.
5. Press “CurA”, turn the “Universal” knob to move Cursor A to the
highest point of the FFT waveform.
6. Press “CurB”, turn the “Universal” knob to move Cursor B to the
lowest point of the FFT waveform.
7. The amplitude (∆T) is displayed at the top right of the screen.

Functional Description
Dual-Channel Digital Oscilloscopes 19
Functional Description
VERTICAL System (cont’d)
Measuring
FFT frequency
1. Press the CURSOR button.
2. Press “Cursor Mode” to select “Manual”.
3. Press “Type” to select “Time”.
4. Press “Source” to select “MATH”.
5. Press “Cur1”, turn the “Universal” button to move Cursor 1 to
the highest position of the FFT waveform.
6. The value of Cur1 displaying on the top right of the screen is
FFT highest Frequency. This frequency should be the same as
input signal frequency.
Note
To display FFT waveforms with a large dynamic range, use the dBVrms
scale. The dBVrms scale displays component magnitudes using a log
scale.

Functional Description
20 Dual-Channel Digital Oscilloscopes
Functional Description
VERTICAL System (cont’d)
Using REF
The reference control saves waveforms to a non-volatile waveform
memory. The reference function becomes available after a waveform
has been saved.
REF function menu
Press the « REF » button.
Option Setting Introduction
Source CH1
CH2
CH1 off
CH2 off
Choose the waveform display to store.
REFA
REFB Choose the reference location to store or
recall a waveform.
Save Stores source waveform to the chosen
reference location.
REFA/REFB on
off
Recall the reference waveform on the
screen.
Turn off the reference waveform.