VOLTCRAFT FG-1302 User manual

Dual-Channel
Arbitrary Waveform Generator
User Manual
Item No.: 2616564 FG-1302
Item No.: 2616563 FG-1602

i
Table of Contents
1.General Safety Requirement ............................................................1
2.Safety Terms and Symbols ...............................................................1
3.General Inspection.............................................................................1
4.Quick Start ..........................................................................................2
Front Panel Overview................................................................................................................2
Rear Panel Overview .................................................................................................................3
Power On...................................................................................................................................4
User Interface............................................................................................................................4
5.Panel Operation .................................................................................5
Channel Setting .........................................................................................................................5
Select the channel for configuration ............................................................................5
To Display/Edit Both Channels.....................................................................................5
Turn on/off channel output ............................................................................................6
Waveform Setting......................................................................................................................6
Output Sine Wave ..........................................................................................................6
Set the frequency/period .......................................................................................7
Set the amplitude....................................................................................................8
Set the offset ...........................................................................................................8
Set the high level ....................................................................................................8
Set the low level......................................................................................................8
Set the Phase..........................................................................................................9
Output Square Wave......................................................................................................9
Output Ramp Wave........................................................................................................9
Set the symmetry..................................................................................................10
Output Pulse Wave ......................................................................................................11
Set the pulse width/duty cycle ............................................................................11
Set the rising time.................................................................................................12
Set the falling time................................................................................................12
Output Noise Wave ......................................................................................................14
Output Arbitrary Wave..................................................................................................14
Select build-in wave (including DC)...................................................................15
Store .......................................................................................................................20
Generate Sweep (Sweep) ........................................................................................................22
Generate Burst (Burst) ............................................................................................................23
Set N-Cycle Burst.........................................................................................................24
Set Gated Burst ............................................................................................................25
Output the Modulated Waves ................................................................................................26

ii
AM (Amplitude Modulation).........................................................................................27
DSBAM (Double Sideband AM) .................................................................................28
FM (Frequency Modulation)........................................................................................30
PM (Phase Modulation)...............................................................................................31
PWM (Pulse Width Modulation) .................................................................................32
ASK (Amplitude Shift Keying).....................................................................................34
PSK (Phase Shift Keying) ...........................................................................................35
FSK (Frequency Shift Keying)....................................................................................36
3FSK (3 Frequency Shift Keying) ..............................................................................37
4FSK (4 Frequency Shift Keying) ..............................................................................39
BPSK (Binary Phase Shift Keying) ............................................................................40
OSK (Oscillation Shift Keying)....................................................................................42
SUM (Sum Modulation) ...............................................................................................43
Utility Function Setting ...........................................................................................................45
Display Settings............................................................................................................45
Brightness Control................................................................................................45
Screen Saver ........................................................................................................45
Separator ...............................................................................................................45
CH1/2 Settings..............................................................................................................46
Load........................................................................................................................46
Sync........................................................................................................................46
System Settings............................................................................................................47
Language...............................................................................................................47
Beeper....................................................................................................................47
USB Device Type .................................................................................................48
Restore to the factory setting..............................................................................48
Firmware Update ..................................................................................................51
Counter ..........................................................................................................................52
6.Communication with PC.................................................................. 53
7.Troubleshooting................................................................................ 53
8.Specification ..................................................................................... 54
Waveforms.....................................................................................................................54
Frequency Characteristics ..........................................................................................54
Amplitude Characteristics ...........................................................................................55
Signal Characteristics ..................................................................................................55
Modulation Characteristics..........................................................................................56
Sweep Characteristics.................................................................................................59
Burst Characteristics....................................................................................................60
Counter Specifications.................................................................................................60
Input/Output Characteristics .......................................................................................60
General Specifications.................................................................................................60

iii
9.Appendix ........................................................................................... 62
Appendix A: Accessories .........................................................................................................62
Appendix B: General Care and Cleaning .................................................................................62

1.General Safety Requirement
1
1. General Safety Requirement
Before any operations, please read the following safety precautions to avoid
any possible bodily injury and prevent this product or any other products
connected from damage. In order to avoid any contingent danger, this
product is only used within the range specified.
Only the qualified technicians can implement the maintenance.
To avoid Fire or Personal Injury:
Use Proper Power Cord. Use only the power cord supplied with the product and
certified to use in your country.
Product Grounded. This instrument is grounded through the power cord
grounding conductor. To avoid electric shock, the grounding conductor must be
grounded. The product must be grounded properly before any connection with its
input or output terminal.
Limit operation to the specified measurement category, voltage, or
amperage ratings.
Check all Terminal Ratings. To avoid fire or shock hazard, check all ratings and
markers on the instrument. Refer to the user's manual for more information about
ratings before connecting the instrument. Do not exceed any of ratings defined in
the following section.
Do not operate without covers. Do not operate the instrument with covers or
panels removed.
Use Proper Fuse. Use only the specified type and rating fuse for this instrument.
Avoid exposed circuit. Do not touch exposed junctions and components when
the instrument is powered.
Do not operate if in any doubt. If you suspect damage occurs to the instrument,
have it inspected by qualified service personnel before further operations.
Use your instrument in a well-ventilated area. Inadequate ventilation may
cause an increasing of temperature or damages to the instrument. Please keep the
instrument well ventilated, and inspect the air outlet and the fan regularly.
Do not operate in wet conditions. To avoid short circuit inside the instrument or
electric shock, never operate the instrument in a humid environment.
Do not operate in an explosive atmosphere.
Keep instrument surfaces clean and dry.

2.Safety Terms and Symbols
1
2. Safety Terms and Symbols
Safety Terms
Terms in this Manual. The following terms may appear in this manual:
Warning: Warning indicates the conditions or practices that could result in
injury or loss of life.
Caution: Caution indicates the conditions or practices that could result in
damage to this product or other property.
Terms on the Product. The following terms may appear on this product:
Danger: It indicates an injury or hazard may immediately happen.
Warning: It indicates an injury or hazard may be accessible potentially.
Caution: It indicates a potential damage to the instrument or other property might
occur.
Safety Symbols
Symbols on the Product. The following symbol may appear on the product:
Hazardous Voltage Refer to Manual
Protective Earth Terminal Chassis Ground
Test Ground

3.General Inspection
1
3. General Inspection
After you get a new device, it is recommended that you should make a check on
the instrument according to the following steps:
1. Check whether there is any damage caused by transportation.
If it is found that the packaging carton or the foamed plastic protection cushion has
suffered serious damage, do not throw it away first till the complete device and its
accessories succeed in the electrical and mechanical property tests.
2. Check the Accessories
The supplied accessories have been already described in Appendix A: Accessories of
this manual. You can check whether there is any loss of accessories with
reference to this description. If it is found that there is any accessory lost or
damaged, please get in touch with our distributor responsible for this service or our
local offices.
3. Check the Complete Instrument
If it is found that there is damage to the appearance of the instrument, or the
instrument can not work normally, or fails in the performance test, please get in
touch with our distributor responsible for this business or our local offices. If there
is damage to the instrument caused by the transportation, please keep the
package. With the transportation department or our distributor responsible for this
business informed about it, a repairing or replacement of the instrument will be
arranged by us.

4.Quick Start
2
4. Quick Start
Front Panel Overview
12467
5
9
11 10
13
3
12
15
8
14
Figure 4-1: Front Panel overview
1
LCD
Display the user interface
2
Menu
selection
keys
Includes 5 keys to activate the corresponding menu
3
Operation
keys
Mode：output the modulated waveform
Both：Display the editable parameters of both channels.
4
Knob
Change the currently selected value, also used to select
the arbitrary waveform types and arb data file name.
When in the sweep or burst manual modes, press this
knob to trigger manually.
5
Direction key
Move the cursor of the selected parameter
6
Operation
key(Utility)
set the utility function
7
Power button
Turn on/off the waveform generator.
8
Number
Input the parameter

4.Quick Start
3
keypad
9
On/Off button
Turns the output of the CH2 channel on or off. When the
output is turned on, the backlight of the button lights up.
10
Out 2
Output CH2 signal
11
CH1/CH2
Switch channel displayed on the screen between CH1 and
CH2
12
Out 1
Output CH1 signal
13
On/Off button
Turns the output of the CH1 channel on or off. When the
output is turned on, the backlight of the button lights up
14
Foot Stool
Tilt the signal generator for easy operation
15
Waveform
Selection
area
Includes: Sine , Square , Ramp , Pulse ,
Noise , Arb Wave .
Rear Panel Overview
Figure 4-2: Rear Panel Overview
1
Handle
2
Signal connector
Used to connect the input or output of a
functional signal
3
Counter input
Used to receive the frequency meter input signal

4.Quick Start
4
4
AC input connector
AC input connector
5
Fuse Container
The place to install the fuse
6
Foot Pad
Tilt the signal generator for easy operation
7
USB interface
Connect with external USB devices, e.g. USB
stick
8
USB Device interface
Used to connect a USB type B controller. Can be
connected with PC, the signal generator can be
controlled by the host computer software
Power On
(1) Connect the instrument to an AC power source using the power cord
supplied with the accessory.
Warning
:
To prevent electric shock, make sure the instrument is properly
grounded.
(2) Press the power button on the front panel. The backlight of the power
channel switch will light up, and the buzzer will sound.
User Interface
14
2367
13
12
11
10
14
8
9
5
Figure 4-3: User Interface
1
Display channel name

5.Panel Operation
5
2
Display channel switch status
3
Display load
4 Current mode
5
When the instrument detects the USB flash drive, it lights up
6 Lights up the indicator when connected to the USB Host via
the USB DEVICE interface
7 Buzzer
8 Menu title
9 Current waveform or mode setting menu
10 Start phase
11
Offset / low level, depending on the right highlighted menu
12 Amp
litude / high level, depending on the right highlighted
menu item
13
Frequency/Period, depending on the highlighted menu item
14 Display current waveform
5. Panel Operation
Channel Setting
Select the channel for configuration
Before configuring waveform parameters, you must first select the channel you
want to configure. Press CH1 /CH2 to switch to the desired channel, and the
user interface displays channel information.
To Display/Edit Both Channels
Press Both button to display the parameters of both channels.
To switch channel: Press CH1/CH2to switch the editable channel.
To select waveform: Press 、、、、、,to select
waveform of current channel.
To select parameter: Press Menu selection keys to choose the Parameter 1
to Parameter 4（Corresponding keys 2-5）;Press it again to switch the
current parameter such as Frequency/Period.

5.Panel Operation
6
To edit parameter: Turn the knob to change the value of cursor position.
Press / direction key to move the cursor. (The number keys can not be
used to input.)
Parameter 1
Parameter 2
Parameter 3
Parameter 4
Waveform
CH1 Waveform CH2
Parameter 1
Parameter 2
Parameter 3
Parameter 4
Figure 5-1: The User Interface of (Both) button
Turn on/off channel output
Press CH1 On/Off or CH2 On/Off on the front panel to turn on/off the
corresponding channel output. The channel will light up when it is set to output.
Waveform Setting
Sine, square, ramp, pulse, noise or arbitrary waves can be set and output.
Press the waveform selection button on the front panel: sine , square
, ramp , pulse , noise , arbitrary wave , and enter the
corresponding waveform setting interface. The waveform is different and the
parameters that can be set are different.
Note: The following setting waveform uses CH1 channel as an example.
If you need to set CH2 channel, please refer to CH1 channel specific
operation.
Output Sine Wave
Press , the screen displays the user interface of the sine wave. The Sine
waveform parameters can be set by operating the Sine setting menu on the
right.
The sine wave menu includes: Frequency/Period, Amplitude/High Level,

5.Panel Operation
7
Offset/Low Level and Phase. The menu can be operated by the menu
selection button on the right.
Load
Output
switch
Parameter 1
Parameter 2
Parameter 3
Parameter 4
Sine
Period
High low - level
Channel
Current
signal
Setting menu
of Sine signal
Figure 5-2: Sine wave user interface
Set the frequency/period
Press CH1/CH2, Select Display CH1 channel.
Press the On/Off button on the CH1, enable channel CH1.
Press the Frequency/Period softkey, the selected menu item is highlighted
in white, and a cursor will display on the corresponding parameter item in
Parameter 1. Press the Frequency/Period softkey to switch the frequency
and period.
There are two ways to change the selected parameter value:
Turn the knob to increase or decrease the value at the cursor. Press the
/ arrow key to move the cursor left or right.
Press a number key on the numeric keypad directly, the screen will pop out
the data input box, input the desired value. Press the MHz, kHz, Hz, mHz,
uHz softkeys to select the unit of the parameter, confirm numeric input.
Press the Back softkey to cancel the current input parameter value.

5.Panel Operation
8
Figure 5-3: Use the numeric keypad to set the frequency
Set the amplitude
Press the Amplitude/High Level softkey to confirm whether the Amplitude
menu item is highlighted; if not, press the Amplitude/High Level sofkey to
switch to Amplitude. In Parameter 2 of Figure 5-2, a blinking cursor appears
in the parameter value of amplitude. Turn the knob to change the value directly,
or use the numeric keypad to input the desired value and choose the unit.
Set the offset
Press the Offset/Low Level softkey to confirm whether the Offset menu item
is highlighted; if not, press the Offset/Low Level softkey to switch to Offset. In
Parameter 3 of Figure 5-2, a blinking cursor appears in the parameter value of
offset. Turn the knobto change the value directly, or use the numeric keypad
to input the desired value and choose the unit.
Set the high level
Press the Amplitude/High Level softkey to confirm whether the High Level
menu item is highlighted; if not, press the Amplitude/High Level softkey to
switch to High Level. In Parameter 2 of Figure 5-2, a blinking cursor appears
in the parameter value of high level. Turn the knob to change the value directly,
or use the numeric keypad to input the desired value and choose the unit.
Set the low level
Press the Offset/Low Level softkey to confirm whether the Low Level menu
item is highlighted; if not, press the Offset/Low Level softkey to switch to Low
Level. In Parameter 3 of Figure 5-2, a blinking cursor appears in the

5.Panel Operation
9
parameter value of low level. Turn the knob to change the value directly, or
use the numeric keypad to input the desired value and choose the unit.
Set the Phase
Press the Phase softkey, the Phase menu item is highlighted. In Parameter 4
of Figure 5-2, a blinking cursor appears in the parameter value of Phase. Turn
the knob to change the value directly, or use the numeric keypad to input the
desired value and choose the unit.
Output Square Wave
Press , the screen displays the user interface of the square wave. The
Square waveform parameters can be set by operating the Square setting
menu on the right.
The square wave menu includes: Frequency/Period, Amplitude/High Level,
Offset/Low Level, and Phase.
To set the Frequency/Period, Amplitude/High Level, Offset/Low Level, Phase,
please refer to Output Sine Wave on page 6.
Load
Output
switch
Parameter 1
Parameter 2
Parameter 3
Parameter 4
Square
Period
High low - level
Channel
Current
signal
Setting menu of
Square signal
Figure 5-4: Square wave user interface
Output Ramp Wave
Press , the screen displays the user interface of the ramp wave. The
Ramp waveform parameters can be set by operating the Ramp setting menu
on the right.
The ramp menu includes: Frequency/Period, Amplitude/High Level,
Offset/Low Level, Phase, and Symmetry.
To set the Frequency/Period, Amplitude/High Level, Offset/Low Level, Phase,
please refer to Output Sine Wave on page 6.

5.Panel Operation
10
Load
Output
switch
Parameter 1
Parameter 2
Parameter 3
Parameter 4
Ramp
Period
High low - level
Channel
Current
signal
Setting menu of
Ramp signal
Parameter 5
Figure 5-5: Ramp wave user interface
Set the symmetry
Press the Symmetry softkey, the Symmetry menu item is highlighted. In
Parameter 5 of Figure 5-5, a blinking cursor appears in the parameter value of
symmetry. Turn the knob to change the value directly, or use the numeric
keypad to input the desired value and choose the unit.

5.Panel Operation
11
Figure 5-6: Set the symmetry of ramp wave
Glossary
Symmetry: Sets the percentage of the period during which the ramp waveform
is rising.
Output Pulse Wave
Press , the screen displays the user interface of the pulse wave. The
Pulse waveform parameters can be set by operating the Pulse setting menu
on the right.
The pulse wave menu includes: Frequency/Period, Amplitude/High Level,
Offset/Low Level, Phase, Width/Duty, and Rise/Fall.
To set the Frequency/Period, Amplitude/High Level, Offset/Low Level, Phase,
please refer to Output Sine Wave on page 6.
Load
Output
switch
Parameter 1
Parameter 2
Parameter 3
Parameter 4
Pulse
Period
High low - level
Channel
Current
signal
Setting menu of
Pulse signal
Parameter 5
Parameter 6
Parameter 7
Figure 5-7: Pulse wave user interface
Set the pulse width/duty cycle
Press the Width/Duty softkey, the chosen menu item is highlighted. Press the
Width/Duty softkey to switch between Pulse Width and Duty Cycle. In

5.Panel Operation
12
Parameter 5 of Figure 5-7, a blinking cursor appears in the parameter value.
Turn the knob to change the value directly, or use the numeric keypad to
input the desired value and choose the unit.
Figure 5-8: Set the pulse width
Set the rising time
Press the Rise softkey, the chosen menu item is highlighted. Press the Rise
softkey to switch between Rising Time and Falling Time. In Parameter 6 of
Figure 5-7, a blinking cursor appears in the parameter value. Turn the knob to
change the value directly, or use the numeric keypad to input the desired
value and choose the unit.
Set the falling time
Press the Fall softkey, the chosen menu item is highlighted. Press the Fall
softkey to switch between Rising Time and Falling Time. In Parameter 7 of
Figure 5-7, a blinking cursor appears in the parameter value. Turn the knob to
change the value directly, or use the numeric keypad to input the desired
value and choose the unit.

5.Panel Operation
13
Glossary
Pulse Width
PW is an abbreviation for pulse width and is divided into positive pulse width
and negative pulse width.
The positive pulse width is the time interval from 50% of the rising edge to 50%
of the adjacent falling edge.
The negative pulse width is the time interval from 50% of the falling edge to
50% of the adjacent rising edge.
The pulse width is determined by the period and duty cycle of the signal. The
calculation formula is pulse width = period * duty cycle.
The settable range of pulse width is limited by the "minimum pulse width" and
"pulse period"
Pulse width ≥minimum pulse width
Pulse width ≤pulse period - minimum pulse width
Duty Cycle
In a series of ideal pulse sequences (such as a square wave), the ratio of the
duration of the positive pulse to the total pulse period.
The pulse duty cycle is associated with the pulse width, and modifying one of
the parameters will automatically modify the other parameter. The pulse duty
cycle is limited by the "minimum pulse width" and "pulse period".
Pulse duty cycle ≥minimum pulse width ÷ pulse period × 100%
Pulse duty cycle ≤(1 - 2 × minimum pulse width ÷ pulse period) × 100%
Rise time / Fall time
The rise time is defined as the time required for the pulse amplitude to rise from 10%
threshold to 90% threshold;
The fall time is defined as the time required for the pulse amplitude to fall from 90%
threshold to 10% threshold as shown in the figure above.

5.Panel Operation
14
Output Noise Wave
The noise wave which the generator output is white noise. Press , the
screen displays the user interface of the noise wave. The Noise waveform
parameters can be set by operating the Noise setting menu on the right.
The noise wave has no frequency and periodic parameters.
The noise wave menu includes: Amplitude/High Level, Offset/Low Level.
To set the Amplitude/High Level, Offset/Low Level, please refer to Output Sine
Wave on page 6.
Load
Output
switch
Parameter 1
Parameter 2
Noise
Period
High low - level
Channel
Current
signal
Setting menu of
Noise signal
Figure 5-9: Noise wave user interface
Output Arbitrary Wave
Press , the screen displays the user interface of the arbitrary wave. The
Arbitrary waveform parameters can be set by operating the Arbitrary setting
menu on the right.
The arbitrary wave menu includes: Frequency/Period, Amplitude/High Level,
Offset/Low Level, Phase, Built-in Waveform and Store.
To set the Frequency/Period, Amplitude/High Level, Offset/Low Level, Phase,
please refer to Output Sine Wave on page 6.
The Arbitrary signal consists of two types: the system built-in waveform and
the customized waveform loaded from PC software which is edited by users.