Metrix GX 1025 User manual

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Pôle Test et Mesure de CHAUVIN-ARNOUX
Parc des Glaisins - 6, avenue du Pré de Challes
F - 74940 ANNECY-LE-VIEUX
Tel. [phone] - Fax [phone]
Copyright © X03739A00 - Ed. 01 - 10/11

General Instructions
I - 2 Function/Arbitrary Waveform Generators
Contents
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General Instructions ............................................................................................................................................. 3
Introduction, Precautions, Safety, Environment.................................................................................................3
Guarantee, Maintenance, Metrological verification, Cleaning............................................................................4
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Instrument Description......................................................................................................................................... 5
Introduction.........................................................................................................................................................5
Front panel, rear panel, handle..........................................................................................................................6
Display Interface.................................................................................................................................................7
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I III III II
Getting Started ...................................................................................................................................................... 9
1. To set a waveform..........................................................................................................................................9
2. To set Modulate / Sweep / Burst..................................................................................................................13
3. To set Output................................................................................................................................................14
4. To use Digital Input ......................................................................................................................................15
5. To use Store / Utility Function......................................................................................................................15
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I IIV V
V
Functional Descroption ...................................................................................................................................... 16
1. To set Sine signals.......................................................................................................................................16
2. To set Ramp signals ....................................................................................................................................20
3. To set Square signals...................................................................................................................................22
4. To set Pulse signals.....................................................................................................................................24
5. To set Noise signals.....................................................................................................................................27
6. To set arbitrary signals.................................................................................................................................28
7. To generate the modulated Waveform ........................................................................................................35
8. To generate Sweep......................................................................................................................................41
9. To generate Burst.........................................................................................................................................43
10. To store and recall......................................................................................................................................45
11. To set Utility Function.................................................................................................................................49
12. Test / Cal....................................................................................................................................................58
13. Edit Information..........................................................................................................................................61
14. Updating Firmware.....................................................................................................................................61
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Applications......................................................................................................................................................... 62
1. Generate Sine Wave....................................................................................................................................62
2. Generate Square Signal...............................................................................................................................63
3. Generate Ramp Signal.................................................................................................................................64
4. Generate Pulse Signal .................................................................................................................................65
5. Generate Noise Signal.................................................................................................................................66
6. Generate Arbitrary Signal.............................................................................................................................67
7. Generate Sweep Signal ...............................................................................................................................68
8. Generate Burst Signal..................................................................................................................................69
9. Generate AM signal......................................................................................................................................70
10. Generate FM signal....................................................................................................................................71
11. Generate PM signal....................................................................................................................................72
12. Generate FSK signal..................................................................................................................................73
13. Generate ASK signal..................................................................................................................................74
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VI
II
Technical Specifications .................................................................................................................................... 75
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Supply................................................................................................................................................................... 84

General Instructions
Function/Arbitrary Waveform Generators I - 3
General Instructions
Introduction You have just purchased a GX 1025 or GX 1050 Function / Arbitrary
Waveform Generator and we appreciate your confidence.
Precautions To obtain the best service:
- read this notice carefully,
- respect the safety instructions.
Failure to respect the warnings and/or usage instructions may damage the
device and/or installations and may be dangerous for the user.
Symbols used on the
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.
Application or withdrawal not authorized for non-insulated conductors
carrying dangerous voltage levels.
Earth
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.
USB host
European conformity
Frame or chassis terminal
Environment
Operation 0°C ~ 40°C
Temperature
Storage -20°C ~ 60°C
Cooling method natural cooling down
below + 35°C ≤90 % relative humidity
Temperature range
+ 35°C ~ + 50°C ≤60 % relative humidity
Operation: below 2000 m
Altitude
Storage: below 2000 m
Pollution degree
2

General Instructions
I - 4 Function/Arbitrary Waveform Generators
General Instructions (contd.)
Definition of
measurement
categories
Overvoltage category ll is for equipment intended to be supplied from the
building wiring. It applies both to plug-connected equipment and to
permanently connected equipment.
Overvoltage category lll is for equipment intended to form part of a building
wiring installation. Such equipment includes socket outlets, fuse panels, and
some mains installation control equipment.
Overvoltage category lV is for equipment installed at or near the origin of the
electrical supply to a building, between the building entrance and the main
distribution board. Such equipment may include electricity tariff meters and
primary overcurrent protection devices.
Guarantee
This equipment is guaranteed for all manufacturing and parts defects in
compliance with the general terms and conditions which are available on
request
During the warranty period (1 year), the instrument may only be repaired by
the manufacturer who reserves the right to make the decision to either repair
or replace all or part of the appliance. In the event of a return of the
equipment to the manufacturer the shipping charge from the customer to the
manufacturer is at the customer’s expense.
The guarantee does not apply in the following conditions:
• inappropriate use of the equipment or use with incompatible equipment
• one or more changes made to the equipment without prior explicit
authorisation from the manufacturer’s technical department
• an intervention is made on the instrument by a person not approved by
the manufacturer
• the adapting to a specific application that is not part of the definition of
the instrument or in the operating guide
• damage caused by a mechanical shock, by dropping the instrument or by
flooding.
Maintenance,
repairs, metrological
checks
The device includes no parts that can be replaced by the operator. All
operations must be carried out by competent approved personnel.
For checks and calibrations, contact one of our accredited metrology
laboratories (information and contact details available on request), at our
Chauvin Arnoux subsidiary or the branch in your country.
Cleaning, safety
measures
-No interventions are authorised inside the instrument.
- Turn the instrument off (remove the power supply cable).
- Clean using a damp cloth and soap.
- Never use abrasive products or solvents.
- Dry quickly using a dry cloth or an air blower at max. 80°C.
- Be sure not to obstruct the ventilation holes.

Description of the instrument
Function/Arbitrary Waveform Generators II - 5
Description of the instrument
Introduction
This Function/Arbitrary Waveform Generator adopts the direct digital
synthesis (DDS) technology, which can provide stable, high-precision, pure
and low distortion signals. Its combination of excellent system features,
easiness in usage and versatile functions makes this generator a perfect
solution for your job now and in the future.
This generator has a clear and simple front-panel. The user-friendly panel
layout and instructions, versatile terminals, direct graph interface, built-in
instructions and help system have greatly simplified the operation process,
with the help of which, users do not have to spend a great deal of time
learning and familiarizing the operation of the generator before they can use
it proficiently. The built-in AM, FM, PM, ASK, and FSK modulation functions
generate modulated waveforms at ease, without the help of a separate
modulating source. USB I/O is a standard accessory, while GPIB is optional.
Remote instructions meet the SCPI specification requirements.
From the characteristics and specifications given below, you will understand
how this generator can satisfy your requirements.
• DDS technology provides precise, stable and low distortional output
signal.
• 3.5’ TFT color LCD display.
• 125 MSa/s sampling rate, 14-bit resolution.
• Frequency characteristics:
GX 1025 GX 1050
Sine 1 µHz to 25 MHz 1 µHz to 50 MHz
Square 1 µHz to 25 MHz 1 µHz to 25 MHz
Ramp 1 µHz to 300 kHz 1 µHz to 300 kHz
Pulse 500 µHz to 10 MHz 500 µHz to 10 MHz
White Noise 25 MHz bandwidth
(- 3 dB) 50 MHz bandwidth (- 3 dB)
Arbitrary 1 µHz to 5 MHz 1 µHz to 5 MHz
• 5 standard waveforms: Sine, Square, Ramp, Pulse, Noise
• Self-defined arbitrary waveform
• Multiple modulation function, various modulated waveform: AM, FM,
PM, ASK, FSK, Sweep and Burst.
• Multiple I/O: external modulation source, external 10 MHz reference
input, external trigger source, waveform output, synchronous signal
output.
• Support USB storage device. Software updating could also be
performed using USB devices.
• Up to 16k sample points of internal waveform depth, which can rebuild
or simulate any complex waveform.
• Remote control is realized using the USB.
• Multiple interfaces: USB host & device, GPIB (IEEE-488) (option).
• English language user interface and built-in help system.

Description of the instrument
II - 6 Function/Arbitrary Waveform Generators
Description of the instrument (contd.)
Front panel
Rear panel
The external input voltage can’t be over 12 Vpp, otherwise instrument
gets damaged.
Modulation
In
Ext Trig/Gate/
Fsk/Burst
10MHz In Sync Out
USB
Device
Power
Socket

Description of the instrument
Function/Arbitrary Waveform Generators II - 7
Description of the instrument (contd.)
Handle
Adjustment
To adjust the handle position of the Function/Arbitrary Waveform
Generator, please grip the handle by the sides and pull it outward.
Then, make the handle rotate to the desired position.
Viewing Position and Carrying Position :

Description of the instrument
II - 8 Function/Arbitrary Waveform Generators
Description of the instrument (contd.)
Display Interface Sine Wave is the default display signal :
Waveform
Display
Window
Parameter
Display and
Editing
Window
Operation Menu:
Different functions
have different
menus

Getting Started
Function/Arbitrary Waveform Generators III - 9
Getting Started
1. To set a waveform On the operation panel, there is a set of buttons with waveform icon.
See below.
The exercise below will help you familiarize with the waveform selection
settings.
Step 1 Press Sine and the waveform window will display sine waveform.
The generator can generate sine signal with a frequency from 1µHz to
25 MHz
(GX 1025), or 50 MHz (GX 1050).
By setting frequency/period, amplitude/high level, offset/low level, sine
signal with different parameters can be generated.
As shown, the default signal parameters are : 1 kHz frequency, 4.0 Vpp
amplitude and 0 Vdc offset.

Getting Started
III - 10 Function/Arbitrary Waveform Generators
Getting Started (contd.)
1. To set a waveform (contd.)
Step 2 Press
Square and the waveform window displays square waveform.
The generator can generate square signal with a frequency from 1µHz to
25MHz and variable duty cycle.
A shown, the default signal parameters are: 1 kHz frequency, 4.0 Vpp
amplitude, 0 Vdc offset and 50% duty cycle.
Step 3
Press Ramp button, and the waveform window displays ramp
waveform. The generator can generate ramp signal with a frequency of from
1µHz to 300 kHz and variable symmetry.
As shown, the default signal parameters are: 1 kHz frequency, 4.0 Vpp
amplitude, 0 Vdc offset and 50% symmetry.

Getting Started
Function/Arbitrary Waveform Generators III - 11
Getting Started (contd.)
1. To set a waveform (contd.)
Step 4 Press
Pulse button, and the waveform window displays pulse
waveform.
The generator can generate pulse signal with a frequency from 500 µHz to
5 MHz and variable pulse width and delay.
As shown, the default signal parameters are: 1 kHz frequency, 4.0 Vpp
amplitude, 0 Vdc offset, 200 µs pulse width.
Step 5 Press
Noise button, and the waveform window displays noise
waveform. The instrument generator can generate noise signal with a band
width up to 50 MHz.
As shown, the default signal parameters are: 4.0 Vpp amplitude and 0 Vdc
offset.

Getting Started
III - 12 Function/Arbitrary Waveform Generators
Getting Started (contd.)
1. To set a waveform (contd.)
Step 6 Press
Arb button, and the waveform window displays arbitrary
waveform. The generator can generate repeatable arbitrary waveform
signals with at most 16 K points and 5 MHz frequency.
As shown, the default sine signal parameters are: 1 kHz frequency, 4.0 Vpp
amplitude and 0mVdc offset.

Getting Started
Function/Arbitrary Waveform Generators III - 13
Getting Started (contd.)
2. To set Modulate /
Sweep / Burst
: those three buttons on the front panel are used for
modulation, sweep and burst settings.
The instructions below will help you familiarize with the
setting of these functions.
Step 1 Press
Mod button, and the modulated waveforms will be generated.
The modulated waveform can be changed by modifying the parameters such
as type, internal/external modulation, depth, frequency, waveform, etc. The
generator can modulate waveform using AM, FM, PM, ASK and FSK. Sine,
square, ramp or arbitrary waveforms can be modulated (pulse, noise and DC
can not be modulated).
Step 2 Press
Sweep button, sine, square, ramp or arbitrary waveform can be
swept (pulse, noise and DC can not be swept).
In the sweep mode, the generator generate signal with variable frequencies.

Getting Started
III - 14 Function/Arbitrary Waveform Generators
Getting Started (contd.)
2. To set Modulate /
Sweep / Burst
(contd.)
Step 3 Press
Burst button, burst for sine, square, ramp, pulse or arbitrary
waveform can be generated.
Term Explanation
Burst
Output waveforms with set cycle times.
Burst can last for certain times of waveform cycle (N-Cycle Burst) or be
controlled by external gated signals (Gated Burst). Burst applies to all kinds
of waveforms, but noise can only be used in gated burst. Generally it is
called burst function within every signal generator.
3. To set Output
Those two buttons on the right side of the
operation panel are used to output control. The instruction below will help
you familiarize with these functions.
Press Output button, activate or deactivate the output signal.

Getting Started
Function/Arbitrary Waveform Generators III - 15
Getting Started (contd.)
4. To use Digital Input
As shown below, there are three sets of buttons on the operation panel,
which are direction button, the knob and the keypad. The instruction below
will help you familiarize with the digital input function.
1. The up and down keys are used to shift parameters and the left and right
keys are used to shift digits.
2. Keypad is used to directly set the parameters value.
3. Knob is used to change a signal digit value whose range is 0~9.
Clockwise to increase 1.
5. To Use
Store/Utility
Function
Those three buttons on the operation panel are used to call the store/recall,
utility and help function. The instruction below will help you familiarize with
these functions.
1. The button is used to store waveform data and configure
information.
2. The button is used to set the auxiliary system function, change
the output configure parameters, interface setting, system setting
information or perform the instrument self-test and read the calibration
information, etc.

Functional Description
IV - 16 Function/Arbitrary Waveform Generators
Functional Description
1. To Set Sine
Signals
Press this button to call the sine operation. The sine waveform parameters are
set by using the sine operation menu.
The parameters of sine waveforms are :
• frequency/period
• amplitude/high level
• offset/low level
• phase/EqPhase
Different sine signals are generated by setting these parameters. As shown,
in the soft key menu, select Freq.
Cursor is located in the frequency parameter area in the parameter display
window, and users can set the frequency value here.
Sine parameters
display interface
Menu Explanations
of Sine waveform
Function
menu Explanations
Freq/
Period
Set the signal frequency or period;
The current parameter will switch at a second press.
Ampl/
HLevel
Set the signal amplitude or high level;
The current parameter will switch at a second press.
Offset/
LLevel
Set the signal offset or low level;
The current parameter will switch at a second press.
Phase/
EqPhase
Set the phase of the signal;
The current parameter will switch at a second press.

Functional Description
Function/Arbitrary Waveform Generators IV - 17
Functional Description (contd.)
To Set the Output
Frequency/Period
1. Press Sine →Freq, to set the frequency parameter.
The frequency shown on the screen when the instrument is powered is the
default value or the set value beforehand. When setting the function, if the
current value is valid for the new waveform, it will be used sequentially. If
you want to set the period for the waveform, press Freq/Period button again,
to switch to the period parameter (The current operation is displayed in
inverse color).
2. Input the desired frequency.
Use the keypad to input the parameter value directly, and press the
corresponding button to select the parameter unit. Or you can use the
direction button to select the digit you want to edit, and then use the knob
to change its value.
Setting the Frequency

When using the keypad to enter the digit, you can use the left direction
button to move the cursor backward and delete or change the value of
the previous digit.

Functional Description
IV - 18 Function/Arbitrary Waveform Generators
Functional Description (contd.)
To Set the Output
Amplitude
1. Press Sine →Ampl , to set the amplitude.
The amplitude shown on the screen when the instrument is powered is
the default value or the set value beforehand. When changing the
function, if the current value is valid for the new waveform, it will be used
sequentially. If you want to set the waveform by high level or low level,
press the Ampl/HLevel or Offset/LLevel button again, to switch into the
high level or low level parameter (the current operation is displayed in
inverse color).
2. Input the desired Amplitude
Use the keypad or the knob to input the desired value, choose the unit
and press the corresponding button.
Setting the
Amplitude

Functional Description
Function/Arbitrary Waveform Generators IV - 19
Functional Description (contd.)
To Set the DC
Offset
1. Press Sine →Offset , to set the offset.
The offset shown on the screen when the instrument is powered is the
default value or the set value beforehand. When changing the function, if the
current value is valid for the new waveform, it will be used sequentially.
2. Input the desired Offset
Use the keypad or the knob to input the desired value, choose the unit,
and press the corresponding button.
Setting the DC Offset

Functional Description
IV - 20 Function/Arbitrary Waveform Generators
Functional Description (contd.)
2. To Set Square
Signals
Press this button to call the Square operation. The square waveform parameters
are set by using the Square operation menu.
The parameters of Square waveforms are: frequency/period, amplitude/high
level, offset/low level, phase and duty cycle. As is shown below, in the soft
key menu, select Duty. Cursor is located in the duty parameter area in the
parameter display window, and users can set the duty value here.
Square Parameter
Display Interface
Menu Explanations of
Square Waveform
Function
Menu Explanation
Freq/
Period Set the signal frequency or period; The current parameter will switch at a second press.
Ampl/
HLevel Set the signal amplitude or high level; The current parameter will switch at a second press.
Offset/
LLevel Set the signal offset or low level; The current parameter will switch at a second press.
Phase/
EqPhase Set the phase of the signal; The current parameter will switch at a second press.
Duty Set the duty cycle for square waveform.

Duty Cycle: The percentage that the high level takes up the whole
period.
Please Note : for the Frequency Duty Cycle Value
Below 10 MHz : 20% to 80%
From 10 MHz to20 MHz (included) : 40% to 60%
Higher than 20 MHz : 50%