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INSTRUCTION MANUAL
ARBITRARY FUNCTION GENERATOR
FGX-2220
B71-0406-01
■ About Brands and Trademarks
“TEXIO” is the product brand name of our industrial electronic devices.
All company names and product names mentioned in this manual are the trademark or the registered trademark of each company or group in each country and region.
■ About the Instruction Manual
Permission from the copyright holder is needed to reprint the contents of this manual, in whole or in part. Be aware that the product specifications and the contents of this manual are subject to change for the purpose of improvement.
CONTENTS
USING THE PRODUCT SAFELY ·········································· Ⅰ -Ⅳ
1 GETTING STARTED ................................................................ 1
1-2. Panel Overview ................................................................. 2
1-3. Setting Up the function Generator ..................................... 6
2. QUICK REFERENCE .............................................................. 7
2-1. How to use the Digital Inputs ............................................. 7
2-2. How to use the Help Menu ................................................ 8
2-3. Selecting a Waveform ....................................................... 9
2-4. Modulation ...................................................................... 10
2-5. Sweep ............................................................................ 13
2-6. Burst .............................................................................. 14
2-7. ARB ................................................................................ 15
2-7-1. ARB –Add Built-In Waveform................................................................ 15
– Output Section ........................................................................... 16
2-8. Utility Menu .................................................................... 16
2-9. Frequency Counter ......................................................... 17
2-10. Coupling ....................................................................... 17
2-11. Tracking ........................................................................ 18
2-12. Menu Tree .................................................................... 19
2-13. Default Settings ............................................................ 25
3. OPERATION ........................................................................ 27
3-1. Select a Waveform .......................................................... 27
3-1-5. Selecting a Noise Waveform................................................................ 31
4. MODULATION ...................................................................... 35
4-1. Amplitude Modulation (AM) ............................................. 35
4-1-7. Selecting the (AM) Modulation Source ................................................ 41
4-2. Frequency Modulation (FM) ............................................. 42
4-2-1. Selecting Frequency Modulation (FM) ................................................. 43
4-2-7. Selecting (FM) Modulation Source ....................................................... 48
4-3. Frequency Shift Keying (FSK) Modulation ........................ 49
4-4. Phase Modulation (PM) ................................................... 55
4-4-1. Selecting Phase Modulation (PM) ........................................................ 55
4-5. SUM modulation ............................................................. 61
4-5-5. Modulating Waveform Frequency ........................................................ 64
4-5-7. Select the SUM Amplitude Source ....................................................... 66
4-6. Frequency Sweep ........................................................... 67
4-6-2. Setting Start and Stop Frequency ........................................................ 68
4-6-3. Center Frequency and Span ................................................................ 69
4-7. Burst Mode ..................................................................... 75
5. SECONDARY SYSTEM FUNCTION SETTINGS .................... 86
5-1. Save and Recall .............................................................. 86
5-2. System and Settings ....................................................... 89
5-2-1. Viewing and Updating the Firmware .................................................... 89
5-3. Dual channel Settings ..................................................... 91
6. CHANNEL SETTINGS .......................................................... 94
6-1. Output Impedance........................................................... 94
6-2. Selecting the Output Phase ............................................. 95
6-3. Synchronizing the Phase ................................................. 96
6-4. DSO Link ........................................................................ 96
7. ARBITRARY WAVEFORMS ................................................... 98
7-1. Inserting Built-In Waveforms ........................................... 98
7-1-1. Create an AbsAtan Waveform ............................................................. 98
7-2. Display an Arbitrary Waveform .......................................100
7-2-1. Set the Horizontal Display Range ...................................................... 100
7-2-2. Set the Vertical Display Properties .................................................... 101
7-2-3. Page Navigation (Back Page) ............................................................ 103
7-2-4. Page Navigation (Next Page) ............................................................ 104
7-3. Editing an Arbitrary Wavefrom ........................................106
7-3-1. Adding a Point to an Arbitrary Waveform ........................................... 106
7-3-2. Adding a Line to an Arbitrary Waveform ............................................ 108
7-4.Ouput an Arbitrary Waveform .......................................... 115
7-5. Saving/Loading an Arbitrary Waveform ........................... 116
7-5-1. Saving a Waveform to Internal Memory ............................................. 116
7-5-2. Saving a Waveform to USB Memory ................................................. 118
7-5-3. Load a Waveform from Internal Memory ........................................... 120
7-5-4. Load a Waveform from USB .............................................................. 122
8. REMOTE INTERFACE .........................................................125
8-1. Establishing a Remote Connection .................................125
8-1-2. Remote control terminal connection .................................................. 125
8-2. Command List ................................................................130
8-3. System Commands ........................................................133
8-4. Status Register Commands ............................................135
8-5. System Remote Commands ...........................................137
8-6. Apply Commands ...........................................................138
8-6-1. SOURce[1|2]:APPLy:SINusoid .......................................................... 139
8-6-2. SOURce[1|2]:APPLy:SQUare ............................................................ 140
8-6-3. SOURce[1|2]:APPLy:RAMP .............................................................. 140
8-6-4. SOURce[1|2]:APPLy:PULSe ............................................................. 141
8-6-5. SOURce[1|2]:APPLy:NOISe .............................................................. 141
8-6-6. SOURce[1|2]:APPLy:USER ............................................................... 142
8-7. Output Commands .........................................................142
8-7-2. SOURce[1|2]:FREQuency ................................................................. 144
8-7-5. SOURce[1|2]:SQUare:DCYCle .......................................................... 147
8-7-6. SOURce[1|2]:RAMP:SYMMetry ......................................................... 147
8-7-9. SOURce[1|2]:VOLTage:UNIT ............................................................ 149
8-8. Pulse Configuration Commands......................................150
8-8-1. SOURce[1|2]:PULSe:PERiod ............................................................ 150
8-8-2. SOURce[1|2]:PULSe:WIDTh ............................................................. 151
8-9. Amplitude Modulation (AM) Commands ..........................152
8-9-2. SOURce[1|2]:AM:STATe ................................................................... 153
8-9-3. SOURce[1|2]:AM:SOURce ................................................................ 153
8-9-4. SOURce[1|2]:AM:INTernal:FUNCtion ................................................ 154
8-9-5. SOURce[1|2]:AM:INTernal:FREQuency ............................................ 154
8-9-6. SOURce[1|2]:AM:DEPTh ................................................................... 155
8-10. Frequency Modulation (FM) Commands ........................156
8-10-2. SOURce[1|2]:FM:STATe ................................................................. 156
8-10-3. SOURce[1|2]:FM:SOURce .............................................................. 157
8-10-4. SOURce[1|2]:FM:INTernal:FUNCtion .............................................. 157
8-10-5. SOURce[1|2]:FM:INTernal:FREQuency .......................................... 158
8-10-6. SOURce[1|2]:FM:DEViation ............................................................. 159
8-11. Frequency-Shift Keying (FSK) Commands ....................160
8-11-2. SOURce[1|2]:FSKey:STATe ............................................................ 160
8-11-3. SOURce[1|2]:FSKey:SOURce ......................................................... 161
8-11-4. SOURce[1|2]:FSKey:FREQuency ................................................... 161
8-11-5. SOURce[1|2]:FSKey:INTernal:RATE ............................................... 162
8-12. Phase Modulation (PM)Commands ...............................163
8-12-2. SOURce[1|2]:PM:STATe ................................................................. 163
8-12-3. SOURce[1|2]:PM:SOURce .............................................................. 164
8-12-4. SOURce[1|2]:PM:INTernal:FUNction ............................................... 164
8-12-5. SOURce[1|2]:PM:INTernal:FREQuency .......................................... 165
8-12-6. SOURce[1|2]:PM:DEViation ............................................................ 166
8-13. SUM Modulation (SUM) Commands ..............................167
8-13-2. SOURce[1|2]:SUM:STATe ............................................................... 167
8-13-3. SOURce[1|2]:SUM:SOURce ............................................................ 168
8-13-4. SOURce[1|2]:SUM:INTernal:FUNction ............................................ 168
8-13-5.SOURce[1|2]:SUM:INTernal:FREQuency ......................................... 169
8-13-6. SOURce[1|2]:SUM:AMPL ................................................................ 169
8-14. Frequency Sweep Commands ......................................171
8-14-2. SOURce[1|2]:SWEep:STATe .......................................................... 172
8-14-3. SOURce[1|2]:FREQuency:STARt .................................................... 172
8-14-4. SOURce[1|2]:FREQuency:STOP .................................................... 173
8-14-5. SOURce[1|2]:FREQuency:CENTer ................................................. 173
8-14-6. SOURce[1|2]:FREQuency:SPAN .................................................... 174
8-14-7. SOURce[1|2]:SWEep:SPACing ....................................................... 175
8-14-8. SOURce[1|2]:SWEep:TIME ............................................................. 175
8-14-9. SOURce[1|2]:SWEep:SOURce ....................................................... 176
8-14-10. SOURce[1|2]:MARKer:FREQuency ............................................... 177
8-14-11. SOURce[1|2]:MARKer ................................................................... 177
8-15. Burst Mode Commands ................................................178
8-15-2. SOURce[1|2]:BURSt:STATe ............................................................ 179
8-15-3. SOURce[1|2]:BURSt:MODE ............................................................ 180
8-15-4. SOURce[1|2]:BURSt:NCYCles ........................................................ 180
8-15-5. SOURce[1|2]:BURSt:INTernal:PERiod ............................................ 181
8-15-6. SOURce[1|2]:BURSt:PHASe ........................................................... 182
8-15-7. SOURce[1|2]:BURSt:TRIGger:SOURce .......................................... 183
8-15-8. SOURce[1|2]:BURSt:TRIGger:DELay ............................................. 184
8-15-9. SOURce[1|2]:BURSt:TRIGger:SLOPe............................................. 184
8-15-10. SOURce[1|2]:BURSt:GATE:POLarity ............................................ 185
8-15-11. SOURce[1|2]:BURSt:OUTPut:TRIGger:SLOPe ............................. 185
8-15-13. SOURce[1|2]:BURSt:TRIGger:MANual ......................................... 187
8-16. Arbitrary Waveform Commands ....................................187
8-16-1. Arbitrary Waveform Overview .......................................................... 187
8-16-2. SOURce[1|2]:FUNCtion USER ........................................................ 188
8-16-3. SOURce[1|2]:DATA:DAC ................................................................. 188
8-16-4. SOURce[1|2]:ARB:EDIT:COPY ....................................................... 189
8-16-5. SOURce[1|2]:ARB:EDIT:DELete ..................................................... 189
8-16-4. SOURce[1|2]:ARB:EDIT:DELete:ALL .............................................. 190
8-16-7. SOURce[1|2]:ARB:EDIT:POINt ....................................................... 190
8-16-8. SOURce[1|2]:ARB:EDIT:LINE ......................................................... 190
8-16-9. SOURce[1|2]:ARB:EDIT:PROTect .................................................. 191
8-16-10. SOURce[1|2]:ARB:EDIT:PROTect:ALL ......................................... 191
8-16-11. SOURce[1|2]:ARB:EDIT:UNProtect ............................................... 191
8-16-12. SOURce[1|2]:ARB:OUTPut ........................................................... 191
8-17. COUNTER Commands .................................................192
8-17-1. COUNTER:STATE .......................................................................... 192
8-18. PHASE Commands ......................................................193
8-18-2. SOURce[1|2]:PHASe:SYNChronize ................................................ 194
8-19. COUPLE Commands ....................................................194
8-19-1.SOURce[1|2]:FREQuency:COUPle:MODE ...................................... 194
8-19-2. SOURce[1|2]:FREQuency:COUPle:OFFSet .................................... 194
8-19-3. SOURce[1|2]:FREQuency:COUPle:RATio ...................................... 195
8-19-4. SOURce[1|2]:AMPlitude:COUPle:STATe ........................................ 195
8-20. Save and Recall Commands .........................................196
8-20-3. MEMory:STATe:DELete .................................................................. 197
8-20-4. MEMory:STATe:DELete ALL ........................................................... 197
8-21. Error Messages ............................................................198
8-21-1.Command Error Codes ..................................................................... 198
8-22. SCPI Status Register ...................................................205
8-22-2. FGX-2220 Status System ................................................................ 206
8-22-3. Questionable Status Register .......................................................... 207
8-22-4. Standard Event Status Registers ..................................................... 207
9. APPDENIX ..........................................................................210
9-1. FGX-2220 Specifications ................................................210
9-2. External Dimensions Figure ...........................................214
9-3. Usage Notes for FGX-2220 ............................................215
USING THE PRODUCT SAFELY
■ Preface
To use the product safely, read instruction manual to the end. Before using this product, understand how to correctly use it. If you read the manuals but you do not understand how to use it, ask us or your local dealer. After you read the manuals, save it so that you can read it anytime as required.
■ Pictorial indication
The manuals and product show the warning and caution items required to safely use the product. The following pictorial indication is provided .
Pictorial
indication
Some part of this product or the manuals may show this pictorial indication. In this case, if the product is incorrectly used in that part, a serious danger may be brought about on the user's body or the product. To use the part with this pictorial indication, be sure to refer to the manuals.
!
WARNING
If you use the product, ignoring this indication, you may get killed or seriously injured. This indication shows that the warning item to avoid the danger is provided.
!
CAUTION
If you incorrectly use the product, ignoring this indication, you may get slightly injured or the product may be damaged. This indication shows that the caution item to avoid the danger is provided.
Please be informed that we are not responsible for any damages to the user or to the third person, arising from malfunctions or other failures due to wrong use of the product or incorrect operation, except such responsibility for damages as required by law.
I
USING THE PRODUCT SAFELY
!
WARNING
!
CAUTION
■ Do not remove the product's covers and panels
Never remove the product's covers and panels for any purpose.
Otherwise, the user's electric shock or fire may be incurred.
■ Warning on using the product
Warning items given below are to avoid danger to user's body and life and avoid the damage or deterioration of the product. Use the product, observing the following warning and caution items.
■ Warning items on power supply
● Power supply voltage
The rated power supply voltages of the product are 100, 120, 220 and
240VAC. The rated power supply voltage for each product should be confirmed by reading the label attached on the back of the product or by the
“rated” column shown in the instruction manual. The specification of power cord attached to the products is rated to 125VAC for all products which are designed to be used in the areas where commercial power supply voltage is not higher than 125VAC. Accordingly, you must change the power cord if you want to use the product at the power supply voltage higher than 125VAC.
If you use the product without changing power cord to 250VAC rated one, electric shock or fire may be caused. When you used the product equipped with power supply voltage switching system, please refer to the corresponding chapter in the instruction manuals of each product.
● Power cord
(IMPORTANT) The attached power cord set can be used for this device only.
If the attached power cord is damaged, stop using the product and call us or your local dealer. If the power cord is used without the damage being removed, an electric shock or fire may be caused.
● Protective fuse
If an input protective fuse is blown, the product does not operate. For a product with external fuse holder, the fuse may be replaced. As for how to replace the fuse, refer to the corresponding chapter in the instruction manual. If no fuse replacement procedures are indicated, the user is not permitted to replace it. In such case, keep the case closed and consult us or your local dealer. If the fuse is incorrectly replaced, a fire may occur.
II
USING THE PRODUCT SAFELY
■ Warning item on Grounding
If the product has the GND terminal on the front or rear panel surface, be sure to ground the product to safely use it.
■ Warnings on Installation environment
● Operating temperature and humidity
Use the product within the oper ating temperature indicated in the “rating” temperature column. If the product is used with the vents of the product blocked or in high ambient temperatures, a fire may occur. Use the product within the operating humidity indicated in the “rating” humidity column.
Watch out for condensation by a sharp humidity change such as transfer to a room with a different humidity. Also, do not operate the product with wet hands. Otherwise, an electric shock or fire may occur.
● Use in gas
Use in and around a place where an inflammable or explosive gas or steam is generated or stored may result in an explosion and fire. Do not operate the product in such an environment. Also, use in and around a place where a corrosive gas is generated or spreading causes a serious damage to the product. Do not operate the product in such an environment.
● Installation place
Do not insert metal and inflammable materials into the product from its vent and spill water on it. Otherwise, electric shock or fire may occur.
■ Do not let foreign matter in
Do not insert metal and inflammable materials into the product from its vent and spill water on it. Otherwise, electric shock or fire may occur.
■ Warning item on abnormality while in use
If smoke or fire is generated from the product while in use, stop using the product, turn off the switch, and remove the power cord plug from the outlet.
After confirming that no other devices catch fire, ask us or your local dealer.
III
USING THE PRODUCT SAFELY
■ Input / Output terminals
Maximum input to terminal is specified to prevent the product from being damaged. Do not supply input, exceeding the specifications that are indicated in the "Rating" column in the instruction manual of the product. Also, do not supply power to the output terminals from the outside. Otherwise, a product failure is caused.
■ Calibration
Although the performance and specifications of the product are checked under strict quality control during shipment from the factory, they may be deviated more or less by deterioration of parts due to their aging or others.
It is recommended to periodically calibrate the product so that it is used with its performance and specifications stable. For consultation about the product calibration, ask us or your local dealer.
■ Daily Maintenance
When you clean off the dirt of the product covers, panels, and knobs, avoid solvents such as thinner and benzene. Otherwise, the paint may peel off or resin surface may be affected. To wipe off the covers, panels, and knobs, use a soft cloth with neutral detergent in it.
During cleaning, be careful that water, detergents, or other foreign matters do not get into the product.
If a liquid or metal gets into the product, an electric shock and fire are caused.
During cleaning, remove the power cord plug from the outlet.
Use the product correctly and safely, observing the above warning and caution items. Because the instruction manual indicates caution items even in individual items, observe those caution items to correctly use the product.
If you have questions or comments about the manuals, ask us or E-Mail us.
IV
1 GETTING STARTED
Th e Getting started chapter introduces the function generator’s main features, appearance, set up procedure and power-up.
1-1. Main Features
Model name
FGX-2220
Performance
Features
Interface
Frequency bandwidth
1μHz～20MHz
DDS Function Generator series
1μHz high frequency resolution maintained at full range
20ppm frequency stability
Arbitrary Waveform Capability
120 MSa/s sample rate
60 MSa/s repetition rate
4k-point waveform length
10 groups of 4k waveform memories
True waveform output to display
User-defined output section
DWR (Direct Waveform Reconstruction) capability
Waveform editing via PC
Sine, Square, Ramp, Pulse, Noise, standard waveforms
Internal and external LIN/LOG sweep with marker output
Int/Ext AM, FM, PM, FSK, SUM modulation
Burst function with internal and external triggers without marker output
Store/recall 10 groups of setting memories
Output overload protection
USB interface as standard
3.5 inch Color TFT LCD (320 X 240) graphical user interface
AWES (Arbitrary Waveform Editing Software) PC software
1
1-2. Panel Overview
Front Panel
LCD
Display
Function keys, Scroll
Return key Wheel
Arrow keys
Output
Terminals
/
Channel select key
LCD Display
Function Keys
F1~F5
Number pad Operation keys Output key
Power switch
TFT color display, 320 x 240 resolution.
F1
Activates functions which appear on the right-hand side of the LCD display.
Return Key
Return
Goes back to the previous menu level.
Operation Keys
Waveform
The waveform key is used to select a type of waveform.
FREQ/Rate
The FREQ/Rate key is used to set the frequency or sample rate.
AMPL sets the waveform amplitude.
AMP
Sets the DC offset.
DC Offset
UTIL
The UTIL key is used to access the save and recall options, update and view the firmware version, access the calibration options, output impedance settings and frequency meter.
ARB
ARB is used to set the arbitrary waveform parameters.
2
Preset Key
Output Key
Channel Select
Key
Output ports
MOD
The MOD, Sweep and Burst keys are used to set the modulation, sweep and burst settings and parameters.
Sweep
Burst
Preset
The preset key is used to recall a preset state.
OUTPUT
CH1/CH2
The Output key is used to turn on or off the waveform output.
The channel select key is used to switch between the two output channels.
OUTPUT
CH1
CH1: Channel 1 output port
CH2: Channel 2 output port
50 Ω
CH2
Power Button
50 Ω
Turns the power on or off.
Arrow Keys
Scroll Wheel
Keypad
7
4
1
0
8
5
2
Used to select digits when editing parameters.
The scroll wheel is used to edit values and parameters.
9
6
3
/
Decrease Increase
The digital keypad is used to enter values and parameters. The keypad is often used in conjunction with the arrow keys and variable knob.
3
Rear Panel
Power socket input Fan Input Terminals
USB Host port
Trigger Input
IN
USB Device port
Trigger MOD
Trigger output
External trigger input. Used to receive external trigger signals.
Trigger Output
OUT
Trigger
Trigger
IN
Counter
MOD Marker output signal. Used for Sweep and ARB mode only.
Fan
OUT
Trigger Counter
Fan.
Power Input
Socket
USB Host
Power input: 100~240V AC
50~60Hz.
AC 100-240V
50-60Hz 25W MAX
Host USB type-A host port.
4
USB Device Port
Counter Input
IN
Device
Trigger
USB type-B device port is used to connect the function generator to a PC for remote control.
MOD Frequency counter input.
MOD Input
OUT
Trigger
Trigger
IN
Counter
MOD Modulation input terminal.
OUT
Trigger Counter
Display
Status Tabs
Parameter
Windows
Soft Menu
Keys
Waveform
Display
Parameter
Windows
Status Tabs
The Parameter display and edit window.
Displays the current channel and setting status.
Waveform Display Used to display the waveform
Soft Menu Keys The function keys (F1~F5) beside the Soft Menu keys correspond to the soft keys.
5
1-3. Setting Up the function Generator
Background
Adjusting the
Handle
This section describes how to adjust the handle and power up the function generator.
Pull out the handle sideways and rotate it.
A F G -2 2 2 5
/
Place the FGX-2220 horizontally,
Or tilt the stand.
Place the handle vertically to hand carry.
Power Up 1. Connect the power cord to the socket on the rear panel.
2. Turn on the power switch on the front panel.
3. When the power switch is turned on the screen displays the loading screen.
The function generator is now ready to be used.
6
2. QUICK REFERENCE
This chapter describes the operation shortcuts, built-in help and factory default settings. This chapter is to be used as a quick reference, for detailed explanations on parameters, settings and limitations, please see the operation chapters
2-1. How to use the Digital Input
s
Background The FGX-2220 has three main types of digital inputs: the number pad, arrow keys and scroll wheel. The following instructions will show you how to use the digital inputs to edit parameters.
1. To select a menu item, press the corresponding function keys below (F1~F5). For example the function key F1 corresponds to the Soft key
“Sine”.
2. To edit a digital value, use the arrow keys to move the cursor to the digit that needs to be edited.
3. Use the scroll wheel to edit the parameter. Clockwise increases the value, counter clockwise decreases the value.
4. Alternatively, the number pad can be used to set the value of a highlighted parameter. 4 5 6
1 2 3
0 /
7
2-2. How to use the Help Menu
Background Every key and function has a detailed description in the help menu.
1. Press UTIL
UTIL
2. Press System (F3)
System F3
3. Press Help (F2)
Help F2
4. Use the scroll wheel to navigate to a help item. Press Select to choose the item.
Keypad Provides help on any front panel key that is pressed.
Provides help on creating arbitrary Create Arbitrary
Waveform
Modulation waveforms.
Explains how to create Modulated
Function waveforms.
Sweep Function Provides help on the Sweep function.
Burst Function Provides help on the Burst
DSO Link function.
Provides help on DSO link.
5. For example, select item 4 to see help on the sweep functions.
8
6. Use the scroll wheel to navigate the help information.
7. Press Return to return to the previous menu.
2-3. Selecting a Waveform
2-3-1. Square Wave
Example: Square wave, 3Vpp, 75% duty cycle, 1kHz.
Output:
CH1
1. Press Waveform and select Square (F2).
Waveform
2. Press Duty (F1), 7 + 5 +
%(F2).
Duty
50 Ω
Input: N/A 3. Press Freq/Rate, 1 + kHz (F4).
FREQ/Rate
4. Press AMPL followed by, 3 + VPP (F5).
AMPL
1
3
Return
Square
7 5 kHz
VPP
%
5. Press the Output key. OUTPUT
9
2-3-2. Ramp Wave
Example: Ramp Wave, 5Vpp, 10kHz, 50% Symmetry.
Output:
CH1
1. Press the Waveform key, and select Ramp
(F4).
Waveform
50 Ω
2. Press SYM(F1), 5 + 0
+%(F2).
SYM
Input: N/A
FREQ/Rate
3. Press the Freq/Rate key then 1 + 0 + kHz (F4).
4. Press the AMPL key then 5 +VPP (F5).
5. Press the Output key.
AMPL
OUTPUT
Ramp
5
1
5
0
0
VPP
% kHz
2-3-3. Sine Wave
Example: Sine Wave, 10Vpp,100kHz
Output:
CH1
1. Press the Waveform key and select Sine (F1).
50 Ω
Input: N/A
2. Press the Freq/Rate key, followed by 1 + 0 +0 + kHz (F4).
3. Press the AMPL key, followed by 1 + 0 +VPP
Waveform
FREQ/Rate
AMPL
(F5).
4. Press the output key. OUTPUT
1
1
Sine
0
0
2-4. Modulation
0
VPP kHz
2-4-1. AM
Example: AM modulation. 100Hz modulating square wave. 1kHz Sine wave carrier. 80% modulation depth.
Output:
CH1
1. Press the MOD key and select AM (F1).
MOD AM
2. Press Waveform and select Sine (F1).
Waveform Sine
50 Ω
Input: N/A 3. Press the Freq/Rate key, followed by 1 + kHz
(F4).
FREQ/Rate
1 kHz
4. Press the MOD key, select AM (F1), Shape
(F4), Square (F2).
MOD
Square
AM Shape
MOD AM AM Freq
5. Press the MOD key, select AM (F1), AM Freq
(F3).
6. Press 1 + 0 + 0 + Hz
(F2).
1 0 0
Hz
10
7. Press the MOD key, select AM (F1), Depth
(F2).
8. Press 8 + 0 + % (F1).
8
MOD
0
AM
%
Depth
9. Press MOD, AM (F1),
Source (F1), INT (F1).
MOD AM Source
10. Press the output key.
INT
OUTPUT
2-4-2. FM
Example: FM modulation. 100Hz modulating square wave. 1kHz Sine wave carrier. 100 Hz frequency deviation. Internal Source.
Output:
CH1
1. Press the MOD key and select FM (F2).
MOD
2. Press Waveform and select Sine (F1).
Waveform
50 Ω
Input: N/A 3. Press the Freq/Rate key, followed by 1 + kHz
(F4).
FREQ/Rate
4. Press the MOD key, select FM (F2), Shape
(F4), Square (F2).
MOD
Square
1
FM
Sine
FM kHz
Shape
MOD FM FM Freq
5. Press the MOD key, select FM (F2), FM Freq
(F3).
6. Press 1 + 0 + 0 + Hz
(F2).
1 0 0
Hz
7. Press the MOD key, select FM (F2), Freq
Dev (F2).
MOD FM Freq Dev
1 0 0
Hz
8. Press 1 + 0 + 0 + Hz
(F3).
9. Press MOD, FM (F2),
Source (F1), INT (F1).
MOD FM Source
10. Press the Output key.
INT
OUTPUT
2-4-3. FSK Modulation
Example: FSK modulation. 100Hz Hop frequency. 1kHz Carrier wave. Sine wave. 10 Hz Rate. Internal Source.
Output:
CH1
1. Press the MOD key and select FSK (F3).
MOD FSK
2. Press Waveform and select Sine (F1).
Waveform Sine
50 Ω
11
Input: N/A 3. Press the Freq/Rate key, followed by 1 + kHz
(F4).
FREQ/Rate
4. Press the MOD key, select FSK (F3), FSK
MOD
Rate (F3).
5. Press 1 + 0 + Hz (F2).
1 0
1
FSK
Hz kHz
FSK Rate
6. Press the MOD key, select FSK (F3), Hop
Freq (F2).
7. Press 1 + 0 + 0 + Hz
(F3).
8. Press MOD, FSK (F3),
Source (F1), INT (F1).
1
MOD
MOD
0 0
FSK
FSK
Hop Freq
Hz
Source
9. Press the output key.
INT
OUTPUT
2-4-4. PM Modulation
Example: PM modulation. 800Hz sinusoidal carrier wave. 15 kHz modulating sine wave. 50˚ phase deviation. Internal Source.
Output:
CH1
1. Press Waveform and select Sine (F1).
Waveform Sine
2. Press the MOD key and select PM (F4).
MOD PM
50 Ω
Input: N/A 3. Press the Freq/Rate key, followed by 8 + 0 +
0 + Hz (F3).
FREQ/Rate
8 0 0
Hz
4. Press the MOD key, select PM (F4), Shape
(F4), Sine (F1).
MOD
Sine
PM Shape
5. Press MOD, then PM
(F4), PM Freq (F3).
MOD
6. Press 1 + 5 + kHz (F3).
1 5
PM kHz
PM Freq
MOD PM PM Dev
7. Press MOD, PM (F4),
PM Dev (F2).
8. Press 5 + 0 + Degree
(F1).
9. Press MOD, PM (F4),
Source (F1), INT (F1).
5
MOD
0
Degree
PM Source
10. Press the Output key.
INT
OUTPUT
12
2-4-5. SUM Modulation
Example: SUM modulation. 100Hz modulating square wave, 1kHz sinusoidal carrier wave, 50% SUM amplitude, internal source.
Output:
CH1
1. Press the MOD key, then SUM (F5).
MOD SUM
2. Press Waveform, and select Sine (F1).
Waveform Sine
50 Ω
Input: N/A
FREQ/Rate
1 kHz
3. Press Freq/Rate followed by 1 + kHz
(F4).
4. Press the MOD key,
SUM (F5), Shape (F4),
Square (F2).
MOD
Square
SUM Shape
5. Press the MOD key and select SUM (F5), SUM
Freq (F3).
MOD SUM SUM Freq
6. Press 1 + 0 + 0 + Hz
(F2).
7. Press the MOD key and select SUM (F5), SUM
Ampl (F2).
8. Press 5 + 0 + % (F1).
1
5
MOD
0
0
0
SUM
%
Hz
SUM Ampl
9. Press MOD, SUM (F5),
Source (F1), INT (F1).
MOD SUM Source
10. Press the Output key.
INT
OUTPUT
2-5. Sweep
Example: Frequency Sweep. Start Frequency 10mHz, Stop frequency 1MHz.
Log sweep, 1 second sweep, Marker Frequency 550 Hz, Manual Trigger.
Output:
CH1
1. Press Sweep, Start (F3).
MOD START
2. Press 1 + 0 + mHz (F2).
1 0 mHz
50 Ω
3. Press Sweep, Stop (F4).
Sweep Stop
Input: N/A 4. Press 1 + MHz (F5).
1
Sweep
MHz
Type Log
5. Press Sweep, Type
(F2), Log (F2).
6. Press Sweep, More
(F5), SWP Time (F1).
7. Press 1 + SEC (F2).
Sweep
1
SEC
More SWP Time
13
8. Press Sweep, More
(F5), Marker (F4),
ON/OFF (F2), Freq (F1).
Sweep
ON/OFF
More
Freq
Marker
9. Press 5 + 5 + 0 + Hz
(F3).
10. Press the Output key.
5 5 0
Hz
11. Press Sweep, Source
(F1), Manual (F3),
Trigger (F1).
OUTPUT
Sweep Source
Trigger
Manual
2-6. Burst
Example: Burst Mode, N-Cycle (Internally triggered), 1kHz burst frequency,
Burst count = 5, 10 ms Burst period, 0˚ burst phase, Internal trigger, 10 us delay, rising edge trigger out
Output:
CH1
1. Press FREQ/Rate 1 kHz
(F4).
FREQ/Rate
1 kHz
2. Press Burst, N Cycle
(F1), Cycles (F1).
Burst N Cycle Cycles
50 Ω
Input: N/A 3. Press 5 + Cyc (F2).
5
Cyc
4. Press Burst, N Cycle
(F1), Period (F4).
5. Press 1 +0 + msec (F2).
1
Burst
0
N Cycle mSEC
Period
6. Press Burst, N Cycle
(F1), Phase (F3).
Burst N Cycle
7. Press 0 + Degree (F2).
0
Degree
8. Press Burst, N Cycle
(F1), TRIG set (F5), INT
(F1).
Burst
INT
N Cycle
9. Press Burst, N Cycle
(F1), TRIG set (F5),
Delay (F4).
Burst
Delay
N Cycle
10. Press 1 + 0 + uSEC
(F2).
1 0 uSEC
Phase
TRIG set
TRIG set
Burst N Cycle TRIG set
11. Press Burst, N Cycle
(F1), TRIG set (F5),
TRIG out (F5), ON/OFF
(F3), Rise (F1).
12. Press the Output key.
TRIG out
OUTPUT
ON/OFF Rise
14
2-7. ARB
2-7-1. ARB –Add Built-In Waveform
Example: ARB Mode, Exponential Rise. Start 0, Length 100, Scale 327.
Output:
CH1
Output:
CH1
50 Ω
Built in
Select
Wave
2. Press Start (F1), 0 +
Enter (F2), Return.
Start
0
3. Press Length (F2), 100,
Enter (F2), Return.
Length
Return
1
4. Press Scale (F3), 327,
Enter (F2), Return,
Done (F5).
Scale
Return
3
Done
0
2
Enter
0
7
2-7-2. ARB- Add Point
Example: ARB Mode, Add point, Address 40, data 300.
Return
Enter
Enter
50 Ω
1. Press ARB, Built in (F3),
Wave (F4), Math(F2), use the scroll wheel to select Exporise and then press Select(F5).
ARB
Math
1. Press ARB, Edit (F2),
Point (F1), Address (F1)
ARB
Adress
Edit
2. Press 4 + 0 + Enter (F2),
Return
4 0
Enter
Point
Return
3. Press Data (F2), 3+0+0,
Enter (F2).
2-7-3. ARB- Add Line
Data
3
Example: ARB Mode, Add line, Address:Data (10:30, 50:100)
0 0
Output:
CH1
50 Ω
1. Press ARB, Edit (F2),
Line (F2), Start ADD
(F1).
2. Press 1 + 0 + Enter (F2),
Return.
1
15
ARB
Start ADD
Edit
0
Enter
Line
Enter
Return
3. Press Start Data (F2), 3
+ 0, Enter (F2), Return.
Start Data
Return
3 0
Enter
4. Press Stop ADD (F3), 5
+ 0, Enter (F2), Return.
Stop ADD
Return
5 0
Enter
5. Press Stop Data (F4), 1
+ 0 + 0, Enter (F2),
Return, Done (F5).
Stop Data
Enter
2-7-4. ARB – Output Section
1 0
Return
0
Done
Example: ARB Mode, Output ARB Waveform, Start 0, Length 1000.
Output:
CH1
1. Press ARB, Output (F4).
ARB Output
50 Ω
2. Press Start (F1), 0 +
Enter (F2), Return.
Start
Return
0
2-8. Utility Menu
2-8-1. Save
3. Press Length (F2), 1 + 0
+ 0, Enter (F2), Return.
Length
Enter
Example: Save to Memory file #5.
Enter
1 0
Return
0
UTIL Memory Store
1. Press UTIL, Memory
(F1), Store (F1).
2. Choose a setting using the scroll wheel and press Done (F5).
Done
16
2-8-2. Recall
Example: Recall Memory file #5.
1. Press UTIL, Memory
(F1), Recall (F2).
2. Choose a setting using the scroll wheel and press Done (F5).
UTIL Memory Recall
Done
2-9. Frequency Counter
2-9-1. Frequency Counter
Example: Turn on the frequency counter. Gate time: 1 second.
Output: N/A 1. Press UTIL, Counter
(F5).
UTIL Counter
Input:
Trigger
IN
MOD 2. Press Gate Time (F1), and press 1 Sec (F3) to choose a gate time of 1 second.
Gate Time 1 Sec
OUT
Trigger Counter
3. Connect the signal of interest to the Frequency counter input on the rear panel.
2-10. Coupling
2-10-1. Frequency Coupling
Example: Frequency Coupling
1. Press UTIL, Dual Chan
(F4) to enter the coupling function.
UTIL Dual Chan
2. Press Freq Cpl (F1) to select the frequency coupling function.
Freq Cpl
17
3. Press Offset (F2). The offset is the frequency difference between CH1 and CH2. Use the number keys or scroll wheel to enter the offset.
Offset
2-10-2. Amplitude Coupling
Example: Amplitude Coupling
1. Press UTIL, Dual Chan
(F4) to enter the coupling function.
2. Press Ampl Cpl (F2),
ON (F1) to select the amplitude coupling function.
UTIL Dual Chan
Ampl Cpl On
2-11. Tracking
Example: Tracking
3. Couples the amplitude and offset between both channels. Any changes in amplitude in the current channel are reflected in the other channel.
1. Press UTIL, Dual Chan
(F4) to enter the coupling function.
UTIL Dual Chan
2. Press Tracking (F3), ON
(F2) to turn on the tracking function.
Tracking On
3. When tracking is turned on, parameters such as amplitude and frequency from the current channel are mirrored on the other channel.
18
2-12. Menu Tree
Conventions Use the menu trees as a handy reference for the function generator functions and properties. The FGX-2220 menu system is arranged in a hierarchical tree. Each hierarchical level can be navigated with the operation or soft menu keys. Pressing the Return key will return you to the previous menu level.
2-12-1. Waveform
Waveform
Sine Square
Duty
%
Pulse
Width nSEC uSEC mSEC
SEC
2-12-2. ARB-Display
ARB
Display
Ramp
SYM
%
Noise
Horizon Vertical
Start
Clear
Enter
Length
Clear
Enter
Center
Clear
Enter
Zoom in
Zoom out
Low
Clear
Enter
High
Clear
Enter
Center
Clear
Enter
Zoom in
Zoom out
Next Page Back Page Overview
19
2-12-3. ARB-Edit
ARB
Edit
Point Line Copy
Address
Clear
Enter
Data
Clear
Enter
Start ADD
Clear
Enter
Start Data
Clear
Enter
Stop ADD
Clear
Enter
Stop Data
Clear
Enter
Done
2-12-4. ARB- Built In
Start
Clear
Enter
Length
Clear
Enter
Paste To
Clear
Enter
Done
ARB
Clear
Start
Clear
Enter
Length
Clear
Enter
Done
All
Done
Protect
All
Done
Start
Clear
Enter
Length
Clear
Enter
Done
Unprotect
Done
Built in
Start
Clear
Enter
Length
Clear
Enter
Scale
Clear
Enter
Wave
Common
Math
Window
Engineer
Select
Done
20
2-12-5. ARB-Save
ARB
More
Save
Start
Clear
Enter
2-12-6. ARB-Load
Length
Clear
Enter
Memory
Select
USB
Select
New Folder
Enter Char
Back Space
Save
New File
Enter Char
Back Space
Save
Done
ARB
More
Load
Memory
Select
USB
Select
To
Clear
Enter
Done
21
2-12-7. ARB-Output
2-12-8. MOD
ARB
Output
Start
Clear
Enter
Length
Clear
Enter
MOD
AM
Source
Int
EXT
Depth
%
AM Freq mHz
Hz kHz
Shape
Sine
Square
Triangle
UpRamp
DnRamp
FM FSK PM SUM
Source
Int
EXT
Freq Dev uHz mHz
Hz kHz
MHz
FM Freq mHz
Hz kHz
Shape
Sine
Square
Triangle
UpRamp
DnRamp
Source
Int
EXT
Hop Freq uHz mHz
Hz kHz
MHz
FSK Rate mHz
Hz kHz
MHz
Source
Int
EXT
Phase Dev
Degree
PM Freq mHz
Hz kHz
Shape
Sine
Square
Triangle
UpRamp
DnRamp
Source
Int
EXT
SUM Ampl
%
SUM Freq mHz
Hz kHz
Shape
Sine
Square
Triangle
UpRamp
DnRamp
22
2-12-9. SWEEP
SWEEP
Source
Int
EXT
Manual
Trigger
Type
Linear
Log
Start uHz mHz
Hz kHz
MHz
Stop uHz mHz
Hz kHz
MHz
More
Go to the
Sweep -
More menu
2-12-10. SWEEP- More
Sweep
More
SWP Time mSEC
SEC
Span uHz mHz
Hz kHz
MHz
Center uHz mHz
Hz kHz
MHz
Marker
Freq uHz mHz
Hz kHz
MHz
ON/OFF
23
2-12-11. Burst- N Cycle
Burst
N Cycle
Cycles
Clear
Cyc
Infinite Phase
Clear
Degree
Period TRIG Setup uSEC mSEC
SEC
Int
EXT
Rise
Fall
Manual
Trigger
Delay nSEC uSEC mSEC
SEC
TRIG out
Rise
Fall
ON/OFF
2-12-12. Burst – Gate
Burst
Gate
Polarity
Pos
Neg
Phase
Clear
Degree
24
2-12-13. UTIL
UTIL
Memory Cal.
System Dual Chan Counter
Store
Done
Recall
Done
Delete
Done
Delete All
Done
2-12-14. CH1/CH2
Self Test
Software
Version
Upgrade
Language
English
Help
Select
Beep
Freq Cpl
Off
Offset
Ratio
Ampl Cpl
Off
On
Tracking
Off
On
Inverted
S_Phase
Gate Time
0.01 Sec
0.1 Sec
1 Sec
10 Sec
CH1/ CH2
Load
50 OHM
High Z
Phase
Phase
Degree
DSO Link
CH1
CH2
CH3
CH4
Search
2-13. Default Settings
The Preset key is used to restore the default panel settings.
Output Settings Function
Frequency
Amplitude
Offset
Output units
Output terminal
Sine Wave
1kHz
3.000 Vpp
0.00V dc
Vpp
50Ω
Preset
25
Modulation
Sweep
Carrier wave
Modulation wave
AM depth
FM deviation
FSK hop frequency
FSK frequency
PM phase deviation
SUM amplitude
Modem status
Start/Stop frequency
Sweep time
Sweep type
Sweep status
Burst Burst frequency
Ncycle
Burst period
Burst starting phase
Burst status
System Settings Power off signal
Display mode
Error queue
Trigger
Calibration
Memory settings
Output
Trigger source
Calibration Menu
1kHz sine wave
100Hz sine wave
100%
100Hz
100Hz
10Hz
180˚
50%
Off
100Hz/1kHz
1s
Linear
Off
1kHz
1
10ms
0˚
Off
On
On
Cleared
No change
Off
Internal (immediate)
Restricted
26
3. OPERATION
The Operation chapter shows how to output basic waveform functions. For details on modulation, sweep, burst and arbitrary waveforms, please see the Modulation
and Arbitrary waveform chapters on pages 35 and 98.
3-1. Select a Waveform
The FGX-2220 can output 5 standard waveforms: sine, square, pulse, ramp and noise.
3-1-1. Sine Wave
Panel Operation 1. Press the Waveformkey.
2. Press F1 (Sine).
Waveform
Sine F1
3-1-2. Square Wave
Panel Operation 1. Press the Waveform key.
Waveform
2. Press F2 (Square) to create a square waveform.
3. Press F1 (Duty). The Duty parameter will be highlighted in the parameter window.
Square F2
Duty F1
27
Range
4. Use the arrow keys and scroll wheel or number pad to enter the
Duty range.
7
4
1
0
8
5
2
9
6
3
/
5. Press F2 (%) to select % units.
Frequency
≤100kHz
100k Hz~≤1MHz
>1MHz~25MHz
%
Duty Range
1.0%~99.0%
10.0%~90.0%
50% (Fixed)
F2
3-1-3. Setting the Pulse Width
Panel Operation 1. Press the Waveform key.
2. Press F3 (Pulse) to create a pulse width waveform.
Waveform
Pulse F3
28
3. Press F1 (Width). The Width parameter will be highlighted in the parameter window.
Width F1
Range
Note
4. Use the arrow keys and scroll wheel or number pad to enter the pulse width.
7
4
1
8
5
2
9
6
3
0 /
5. Press F2~F5 choose the unit range.
Pulse Width nSEC
F2
20ns~1999.9s
~
Minimum Pulse Width
SEC
F5
Frequency ≤ 25MHz:
20ns pulse width.
Frequency
≤ 100 kHZ:
1/4096 duty cycle.
Resolution Frequency ≤ 25MHz:
20ns pulse width.
Frequency
≤100 kHZ:
1/4096 duty cycle.
29
Rise time / Fall time approx.. 17ns(typ.)
Note
Note
Setting of the pulse width can be set up to 20ns, but it is less than 100ns, not a square wave by the specifications.
3-1-4. Setting a Ramp Waveform
Panel Operation 1. Press the Waveform key.
2. Press F4 (Ramp) to create a ramp waveform.
3. Press F1 (SYM). The SYM parameter will be highlighted in the parameter window.
Waveform
Ramp F4
SYM F1
Range
4. Use the arrow keys and scroll wheel or number pad to enter the symmetry percentage.
7
4
1
0
8
5
2
9
6
3
/
5. Press F2 (%) to choose % units.
Symmetry 0%~100%
% F2
30
3-1-5. Selecting a Noise Waveform
Panel Operation 1. Press the Waveform key.
2. Press F5 (Noise).
Waveform
Noise F5
31
3-1-6.Setting the Frequency
Panel Operation 1. Press the FREQ/Rate key.
FREQ/Rate
2. The FREQ parameter will become highlighted in the parameter window.
Range
3. Use the arrow keys and scroll wheel or number pad to enter the frequency.
7
4
1
0
8
5
2
9
6
3
/
4. Choose a frequency unit by pressing F1~F5. uHz
F1
~
Sine wave 1μHz~25MHz
Square wave 1μHz~25MHz
Pulse wave 500μHz~25MHz
Ramp wave 1μHz~1MHz
MHz
F5
32
3-1-7. Setting the Amplitude
Panel Operation 1. Press the AMPL key.
AMPL
2. The AMPL parameter will become highlighted in the parameter window.
3. Use the arrow keys and scroll wheel or number pad to enter the amplitude.
7
4
1
4. Choose a unit type by pressing
F1~F5.
Range
Unit
50
Ω load
1mVpp~10Vpp
Vpp, Vrms, dBm
8
5
2
9
6
3
0 /
~ dBm VPP
F1
High Z
F5
2mVpp~20Vpp
33
3-1-8. Setting the DC Offset
Panel Operation 1. Press the DC Offset key.
DC Offset
2. The DC Offset parameter will become highlighted in the parameter window.
3. Use the arrow keys and scroll wheel or number pad to enter the
DC Offset.
7
4
1
0
8
5
2
9
6
3
/
4. Press F1 (mVDC) or F2 (VDC) to choose a voltage range.
50
Ω load mVDC
F1
High Z
Range ±5Vpk ±10Vpk
VDC
F2
34
4. MODULATION
The FGX-2220 Series Arbitrary Function Generators are able to produce AM, FM,
FSK, PM and SUM modulated waveforms. Depending on the type of waveform produced, different modulation parameters can be set. Only one modulation mode can be active at any one time. The function generator also will not allow sweep or burst mode to be used with AM/FM. Activating a modulation mode will turn the previous modulation mode off.
4-1. Amplitude Modulation (AM)
An AM waveform is produced from a carrier waveform and a modulating waveform.
The amplitude of the modulated carrier waveform depends on the amplitude of the modulating waveform. The FGX-2220 function generator can set the carrier frequency, amplitude and offset as well as internal or external modulation sources.
35
4-1-1. Selecting AM Modulation
Panel Operation 1. Press the MOD key.
2. Press F1 (AM).
MOD
AM F1
4-1-2. AM Carrier Shape
Background Sine, square, ramp, pulse or arbitrary waveforms can be used as the carrier shape. The default waveform shape is set to sine. Noise is not available as a carrier shape.
Before the carrier shape can be selected, choose AM modulation mode, see above.
Select a Standard
Carrier Shape
1. Press the Waveform key.
2. Press F1~F4 to choose the carrier wave shape.
Waveform
Sine
F1
~
Ramp
F4
Select an Arbitrary
Waveform Carrier
Shape.
3. See the Arbitrary waveform quick
reference or chapter to use an arbitrary waveform.
Range AM Carrier Shape sine, square, Ramp,Pulse, arbitrary waveform
36
4-1-3. Carrier Frequency
The maximum carrier frequency depends on the carrier shape selected. The default carrier frequency for all carrier shapes is 1kHz.
Panel Operation 1. With a carrier waveform selected, press the FREQ/Rate key.
FREQ/Rate
2. The FREQ parameter will become highlighted in the parameter window.
Range
3. Use the arrow keys and scroll wheel or number pad to enter the carrier frequency.
7
4
1
0
8
5
2
9
6
3
/
Carrier Shape
~
4. Press F1~F5 to select the frequency range. uHz
F1
Carrier Frequency
Sine wave
Square wave
Ramp wave
1μHz~ 25MHz
1μHz~25MHz
1μHz~1MHz
Pulse wave
Default frequency
500uHz~25MHz
1 kHz
MHz
F5
37
4-1-4. Modulating Wave Shape
The function generator can accept internal as well as external sources. The
FGX-2220 has sine, square, triangle, up ramp and down ramp modulating waveform shapes. Sine waves are the default wave shape.
Panel Operation
Note
1. Press the MOD key.
MOD
2. Press F1 (AM).
AM F1
3.
4.
Press F4 (Shape).
Press F1 ~ F5 to select the waveform shape.
Shape F4
Sine
F1
~
DnRamp
F5
5. Press Return to return to the previous menu.
Square wave
UpRamp
Triangle
DnRamp
Return
50% Duty cycle
100% Symmetry
50% Symmetry
0% Symmetry
38
4-1-5. AM Frequency
The frequency of the modulation waveform (AM Frequency) can be set from 2mHz to 20kHz.
Panel Operation 1. Press the MOD key.
2. Press F1 (AM).
3. Press F3 (AM Freq)
MOD
AM
AM Freq
F1
F3
4. The AM Freq parameter will become highlighted in the Waveform display area.
Range
5. Use the arrow keys and scroll wheel or number pad to enter the
AM frequency.
7
4
1
0
8
5
2
9
6
3
/
6. Press F1~F3 to select the frequency range. mHz
F1
~
Modulation frequency 2mHz~20kHz
Default frequency 100Hz kHz
F3
39
4-1-6. Modulation Depth
Modulation depth is the ratio (as a percentage) of the unmodulated carrier amplitude and the minimum amplitude deviation of the modulated waveform. In other words, modulation depth is the maximum amplitude of the modulated waveform compared to the carrier waveform as a percentage.
Panel Operation 1. Press the MOD key.
2. Press F1 (AM).
3. Press F2 (Depth).
MOD
AM
Depth
F1
F2
4. The AM Depth parameter will become highlighted in the waveform display area.
Range
5. Use the arrow keys and scroll wheel or number pad to enter the
AM depth.
7
4
1
0
8
5
2
9
6
3
/
6. Press F1 (%) to choose % units.
Depth
Default depth
0%~120%
100%
% F1
40
Note When the modulation depth is greater than 100%, the output cannot exceed ±5VPeak (10k Ω load).
If an external modulation source is selected, modulation depth is limited to ± 5V from the MOD INPUT terminal on the rear panel. For example, if the modulation depth is set to 100%, then the maximum amplitude is +5V, and the minimum amplitude is -5V.
4-1-7. Selecting the (AM) Modulation Source
The function generator will accept an internal or external source for AM modulation.
The default source is internal.
Panel Operation 1. Press the MOD key.
2. Press F1 (AM).
MOD
AM F1
3.
4.
Press F1 (Source).
Press F1 (INT) or F2 (EXT) to select the modulation source.
Source
INT
F1
~
F1
EXT
F2
5. Press Return to go back to the previous menu.
Return
Trigger MOD
External Source Use the MOD INPUT terminal on the rear panel when using an external source.
IN
Note
OUT
Trigger Counter
If an external modulation source is selected, modulation depth is limited to ± 5V from the MOD INPUT terminal on the rear panel. For example, if modulation depth is set to
100%, then the maximum amplitude is +5V, and the minimum amplitude is -5V.
41
4-2. Frequency Modulation (FM)
A FM waveform is produced from a carrier waveform and a modulating waveform.
The instantaneous frequency of the carrier waveform varies with the magnitude of the modulating waveform. When using the FGX-2220 function generator, only one type of modulated waveform can be created at any one time.
42
4-2-1. Selecting Frequency Modulation (FM)
When FM is selected, the modulated waveform depends on the carrier frequency, the output amplitude and offset voltage.
Panel Operation 1. Press the MOD key.
MOD
2. Press F2 (FM).
FM F2
4-2-2. FMCarrier Shape
Background The default waveform shape is set to sine. Noise and pulse waveforms cannot be used as a carrier wave.
Panel Operation
Range
1. Press the Waveform key.
Waveform
Carrier Shape
~
2. Press F1~F4 to select the carrier shape.
Sine
F1
Sine, Square, Ramp.
Ramp
F4
4-2-3. FM Carrier Frequency
When using the FGX-2220 function generator, the carrier frequency must be equal to or greater than the frequency deviation. If the frequency deviation is set to value greater than the carrier frequency, the deviation is set to the maximum allowed.
The maximum frequency of the carrier wave depends on the waveform shape chosen.
43
Panel Operation 1. To select the carrier frequency, press the FREQ/Rate key.
FREQ/Rate
2. The FREQ parameter will become highlighted in the parameter window.
Range
3. Use the arrow keys and scroll wheel or number pad to enter the carrier frequency.
7
4
1
0
8
5
2
9
6
3
/
Carrier Shape
Sine
Square
Ramp
Default frequency
~
4. Press F1~F5 to select the frequency unit. uHz
F1
Carrier Frequency
1 μHz~25MH
1μHz~15MHz
1μHz~1MHz
1kHz
MHz
F5
44
4-2-4. FM Wave Shape
The function generator can accept internal as well as external sources. The
FGX-2220 has sine, square, triangle, positive and negative ramps (UpRamp,
DnRamp) as the internal modulating waveform shapes. Sine is the default wave shape.
Background
Range
1. Select MOD.
MOD
2. Press F2 (FM).
FM F2
3.
4.
Press F4 (Shape).
Press F1 ~ F5 to select the waveform shape.
Shape F4
Sine
F1
~
DnRamp
F5
5. Press Return to return to the previous menu.
Square wave
UpRamp
Triangle
DnRamp
Return
50% Duty cycle
100% Symmetry
50% Symmetry
0% Symmetry
45
4-2-5. FM Frequency
The frequency of the modulation waveform (FM Frequency) can be set from 2mHz to 20kHz.
Panel Operation 1. Press the MOD key.
MOD
2. Press F2 (FM).
FM F2
3. Press F3 (FM Freq).
FM Freq F3
4. The FM Freq parameter will become highlighted in waveform display panel.
Range
5. Use the arrow keys and scroll wheel or number pad to enter the
FM frequency.
7
4
1
0
8
5
2
9
6
3
/
6. Press F1~F3 to select the frequency unit. mHz
F1
Modulation frequency 2mHz~20kHz
~
Default frequency 100Hz kHz
F3
46
4-2-6. Frequency Deviation
The frequency deviation is the peak frequency deviation from the carrier wave and the modulated wave.
Panel Operation 1. Press the MOD key.
2. Press F2 (FM).
3. Press F2 (Freq Dev).
MOD
FM
Freq Dev
F2
F2
4. The Freq Dev parameter will become highlighted in the waveform display panel.
Range
5. Use the arrow keys and scroll wheel or number pad to enter the frequency deviation.
7
4
1
0
8
5
2
9
6
3
/
Frequency Deviation
Default depth
~
6. Press F1~ F5 to choose the frequency units. uHz
F1
DC~25MHz
DC~15MHz(square)
DC~1MHz (Ramp)
100Hz
MHz
F5
47
4-2-7. Selecting (FM) Modulation Source
The function generator will accept an internal or external source for FM modulation.
The default source is internal.
Panel Operation 1. Press the MOD key.
2. Press F2 (FM).
3. Press F1 (Source).
MOD
FM F2
4. To select the source, press F1
(Internal) or F2 (External).
Source
INT
F1
~
F1
EXT
F2
5. Press Return to return to the previous menu.
Return
Trigger MOD
External Source Use the MOD INPUT terminal on the rear panel when using an external source.
IN
Note
OUT
Trigger Counter
If an external modulating source is selected, the frequency deviation is limited to the ± 5V MOD INPUT terminal on the rear panel. The frequency deviation is proportional to the signal level of the modulation in voltage. For example, if the modulation in voltage is +5V, then the frequency deviation would be equal to the set frequency deviation. Lower signal levels reduce the frequency deviation while negative voltage levels produce frequency deviations with frequencies below the carrier waveform.
48
4-3. Frequency Shift Keying (FSK) Modulation
Frequency Shift Keying Modulation is used to shift the frequency output of the function generator between two preset frequencies (carrier frequency, hop frequency). The frequency at which the carrier and hop frequency shift is determined by the internal rate generator or the voltage level from the Trigger
INPUT terminal on the rear panel.
Only one modulation mode can be used at once. When FSK modulation is enabled, any other modulation modes will be disabled. Sweep and Burst also cannot be used with FSK modulation. Enabling FSK will disable Sweep or Burst mode.
49
4-3-1. Selecting FSK Modulation
When using FSK mode, the output waveform uses the default settings for carrier frequency, amplitude and offset voltage.
Panel Operation 1. Press the MOD key.
2. Press F3 (FSK).
MOD
FSK F3
4-3-2. FSK Carrier Shape
Background The default waveform shape is set to sine. Noise waveforms cannot be used as carrier waves.
Panel Operation 1. Press the Waveform key.
Waveform
2. Press F1~F4 to choose the carrier wave shape.
Carrier Shape
Sine
~
Ramp
F1 F4
Sine, Square, Pulse, Ramp Range
4-3-3. FSK Carrier Frequency
The maximum carrier frequency depends on the carrier shape. The default carrier frequency for all carrier shapes is 1kHz. The voltage level of the Trigger INPUT signal controls the output frequency when EXT is selected. When the Trigger
INPUT signal is logically low the carrier frequency is output and when the signal is logically high, the hop frequency is output.
50
Panel Operation 1. Press the FREQ/Rate key to select the carrier frequency.
FREQ/Rate
2. The FREQ parameter will become highlighted in the parameter window.
3. Use the arrow keys and scroll wheel or number pad to enter the carrier frequency.
7
4
1
8
5
2
9
6
3
0 /
Range Carrier Shape
~
4. Press F1~F5 to select the FSK frequency units. uHz
F1
Carrier Frequency
Sine wave
Square wave
Ramp wave
Pulse wave
1μHz~25MHz
1μHz~15MHz
1μHz~1MHz
500 μHz~15MHz
Default frequency 1kHz
4-3-4. FSK Hop Frequency
MHz
F5
The default Hop frequency for all waveform shapes is 100 Hz. A square wave with a duty cycle of 50% is used for the internal modulation waveform. The voltage level of the Trigger INPUT signal controls the output frequency when EXT is selected.
When the Trigger INPUT signal is logically low the carrier frequency is output and when the signal is logically high, the hop frequency is output.
Panel Operation 1. Press the MOD key.
2. Press F3 (FSK).
MOD
FSK F3
3. Press F2 (Hop Freq).
Hop Freq F2
51
4. The Hop Freq parameter will become highlighted in the Waveform Display area.
Range
5. Use the arrow keys and scroll wheel or number pad to enter the hop frequency.
7
4
1
0
8
5
2
9
6
3
/
Waveform
~
6. Press F1~F5 to select the frequency range. uHz
F1
Carrier Frequency
Sine wave
Square wave
Ramp wave
Pulse wave
1μHz~25MHz
1μHz~15MHz
1μHz~1MHz
500μHz~15MHz
Default frequency 100Hz
MHz
F5
52
4-3-5. FSK Rate
FSK Rate function is used to determine rate at which the output frequency changes between the carrier and hop frequencies. The FSK Rate function only applies to internal FSK sources.
Panel Operation 1. Select the MOD key.
2. Press F3 (FSK).
3. Press F3 (FSK Rate).
MOD
FSK
FSK Rate
F3
F3
4. The FSK Rate parameter will become highlighted in the waveform display area.
Range
Note
5. The arrow keys and scroll wheel or number pad to enter the FSK rate.
1
7
4
8
5
9
6
2 3
0 /
6. Press F1~F4 to select the frequency unit.
FSK Rate mHz
F1
2mHz~100kHz
~
Default 10Hz kHz
F4
If an external source is selected, FSK Rate settings are ignored.
53
4-3-6. FSK Source
The FGX-2220 accepts internal and external FSK sources, with internal as the default source. When the FSK source is set to internal, the FSK rate is configured using the FSK Rate function. When an external source is selected the FSK rate is equal to the frequency of the Trigger INPUT signal on the rear panel.
Panel Operation 1. Press the MOD key.
2. Press F3 (FSK).
3. Press F1 (Source).
Note
MOD
FSK F3
4. Press F1 (Internal) or F2
(External) to select the FSK source.
Source
INT
F1
~
F1
EXT
F2
5. Press Return to return to the previous menu.
Return
Note that the Trigger INPUT terminal cannot configure edge polarity.
54
4-4. Phase Modulation (PM)
The phase deviation of the carrier waveform deviates from a reference phase value in proportion to changes in the modulating waveform.
Only one mode of modulation can be enabled at any one time. If PM is enabled, any other modulation mode will be disabled. Likewise, burst and sweep modes cannot be used with PM and will be disabled when PM is enabled.
4-4-1. Selecting Phase Modulation (PM)
When selecting PM, the current setting of the carrier frequency, the amplitude modulation frequency, output, and offset voltage must be considered.
Panel Operation 1. Press the MOD key.
MOD
2. Press F4 (PM).
PM F4
55
4-4-2. PM Carrier Waveform
Background PM uses a sine wave as default. Noise and Pulse waveform cannot be used with phase modulation.
Panel Operation 1. Press the Waveform key.
Waveform
Range
2. Press F1 ~ F4 to select the waveform.
Carrier Waveform
Sine
~
Ramp
F1 F4
Sine wave, Square wave, ramp wave.
4-4-3. PM Carrier Frequency
Selects the maxium carrier frequency for the carrier wavefrom. The default carrier frequency is 1kHz.
Panel Operation 1. Press the FREQ/Rate key to select the carrier frequency.
FREQ/Rate
2. The FREQ parameter will become highlighted in the parameter window.
Range
3. Use the arrow keys and scroll wheel or number pad to enter the carrier frequency.
7
4
1
8
5
2
9
6
3
0 /
4. Press F1~F5 to select the frequency unit.
Carrier Wave
Sine wave
Square wave
Ramp wave
Default frequency uHz
F1
~
MHz
F5
Carrier Frequency
1
μHz~25MH
1μHz~15MHz
1μHz~1MHz
1 kHz
56
4-4-4. PM Wave Shape
The function generator can accept internal or external sources. The internal sources can include sine, square, triangle, up ramp and down ramp. The default wave shape is sine.
Panel Operation
Range
1. Select the MOD key.
MOD
2. Press F4 (PM).
PM F4
3.
4.
Press F4 (Shape).
Press F1~F5 to select a waveform shape.
Shape F4
Sine
F1
~
DnRamp
F5
5. Press Return to return to the previous menu.
Waveform
Square wave
Up Ramp
Triangle
Dn Ramp
Return
50% Duty Cycle
100% Symmetry
50% Symmetry
0% Symmetry
57
4-4-5. PM Frequency
The frequency of the modulation waveform (PM Frequency) can be set from 2mHz to 20kHz.
Panel Operation 1. Press the MOD key.
MOD
2. Press F4 (PM).
PM F4
3. Press F3 (PM Freq).
PM Freq F3
4. The PM Freq parameter will become highlighted in the Waveform Display area.
Range
5. Use the arrow keys and scroll wheel or number pad to enter the
PM frequency.
7
4
1
0
8
5
2
9
6
3
/
6. Press F1~F3 to select the frequency unit range. mHz
F1
Modulation frequency 2mHz~20kHz
~
Default frequency 100Hz kHz
F3
58
4-4-6. Phase Deviation
The maximum phase deviation depends on the the carrier wave frequency and the modulated waveform.
Panel operation 1. Press the MOD key.
2. Press F4 (PM).
3. Press F2 (Phase Dev).
MOD
PM
Phase Dev
F4
F2
4. The Phase Dev parameter will become highlighted in the waveform display area.
Range
5. Use the arrow keys and scroll wheel or number pad to enter the phase deviation.
7
4
1
0
8
5
2
9
6
3
/
6. Press F1 to select the phase units.
Phase deviation/shift
Defualt phase
0~360°
180°
Degree F1
59
4-4-7. Select the PM Source
The function generator excepts internal or external sources for phase modulation.
The default source is internal.
Panel Operation 1. Press the MOD key.
2. Press F4 (PM).
3. Press F1 (Source).
MOD
PM F4
4. Press F1 (INT) or F2 (EXT) to select the source.
Source
INT
F1
~
F1
EXT
F2
5. Press return to return to the previous menu.
Return
Trigger MOD
External Source Use the MOD INPUT terminal on the rear panel when using an external source.
IN
Note
OUT
Trigger Counter
If the modulation source is set to external, the phase deviation is controlled by the ±5V MOD INPUT terminal on the rear panel. For example, if the modulation voltage is +5V, then the phase deviation is equal to the phase deviation setting. If the modulation voltage is less than
+5V, then the phase deviation will be less than the phase deviation setting.
60
4-5. SUM modulation
Sum modulation adds a modulating signal to a carrier wave. Typically, sum modulation is used to add noise to a carrier wave. The modulating signal is added as a percentage of the carrier amplitude.
If SUM is enabled, any other modulation mode will be disabled. Likewise, burst and sweep modes cannot be used with SUM and will be disabled when SUM is enabled.
4-5-1. Selecting SUM modulation
For SUM modulation, the modulated waveform amplitude and offset is determined by the carrier wave.
Panel Operation 1. Press the MOD key.
MOD
2. Press F5 (SUM).
SUM F5
61
4-5-2. SUM Carrier Waveform
Background
The SUM carrier waveform is a sinewave by default.
Panel Operation
Range
1. Press the Waveform key.
Waveform
2. Press F1~F5 to select the carrier waveform.
Carrier Waveform
Sine
~
Noise
F1 F5
Sine, square, pulse, ramp and noise wave.
4-5-3. SUM Carrier Frequency
The maximum carrier frequency depends on the selected carrier waveform. The default carrier frequency is 1kHz.
Panel Operation 1. Press the FREQ/Rate key to select the carrier frequency.
FREQ/Rate
2. The FREQ parameter will become highlighted in the parameter window.
3. Use the arrow keys and scroll wheel or number pad to enter the frequency.
7
4
1
0
8
5
2
9
6
3
/
4. Press F1 ~ F5 to select the frequency units. uHz
F1
~
MHz
F5
62
Range Carrier Waveform
Sine wave
Square wave
Pulse wave
Ramp wave
Default frequency
4-5-4. SUM Waveform
Carrier Frequency
1 μHz~25MH
1μHz~25MHz
500 μHz~25MHz
1μHz~1MHz
1 kHz
The function generator can accept internal and external sources. The FGX-2220 includes sine, square, triangle, UpRamp and DnRamp as internal sources. The default waveform is sine.
Panel Operation
Range
1. Press the MOD key.
MOD
2. Press F5 (SUM).
SUM F5
3. Press F4 (Shape). Shape F4
4. Press F1~F5 to select the source waveform.
Sine
F1
~
DnRamp
F5
5. Press Return to return to the previous menu.
Square wave
Up ramp
Triangle
Down ramp
Return
50% Duty cycle
100% Symmetry
50% Symmetry
0% Symmetry
63
4-5-5. Modulating Waveform Frequency
The frequency of the modulating waveform (SUM Frequency) can be set from
2mHz to 20kHz.
Panel Operation 1. Press the MOD key.
MOD
2. Press F5 (SUM).
SUM F5
3. Press F3 (SUM Freq).
SUM Freq F3
4. The SUM Freq parameter will become highlighted in the waveform display area.
64
5. Use the arrow keys and scroll wheel or number pad to enter the
SUM frequency.
7
4
1
8
5
2
9
6
3
0 /
Range
6. Press F1~F3 to select the frequency units.
Modulating range mHz
F1
2mHz~20kHz
~
Default frequency 100Hz
4-5-6. SUM Amplitude
kHz
F3
The SUM amplitude is the offset (in percent relative to the carrier) of the signal that is added to the carrier.
Panel Operation 1. Press the MOD key.
2. Press F5 (SUM).
3. Press F2 (SUM Ampl).
MOD
SUM
SUM Ampl
F5
F2
4. In the waveform display area, the SUM Ampl will be highlighted.
65
5. Use the arrow keys and scroll wheel or number pad to enter the
SUM amplitude.
7
4
1
0
8
5
2
9
6
3
/
Range
6. Press F1 to select the percentage unit.
Sum amplitude
Default amplitude
4-5-7. Select the SUM Amplitude Source
0~100%
50%
% F1
The signal generator can accept internal or external sources for the SUM amplitude modulation.
Panel Operation 1. Press the MOD key.
2. Press F5 (SUM).
3. Press F1 (Source).
MOD
SUM F5
4. Press F1 (INT) or F2 (EXT) to select the source.
Source
INT
F1
~
F1
EXT
F2
5. Press Return to return to the previous menu.
Return
Trigger MOD
External Source Use the MOD INPUT terminal on the rear panel when using an external source.
IN
Note
OUT
Trigger Counter
If an external modulation source is selected, the SUM amplitude is controlled by the ± 5V from the MOD INPUT terminal on the rear panel. For example, if the SUM amplitude is set to 50%, then the maximum amplitude
(150% of the carrier ) will be at +5V, and the minimum amplitude (50% of the carrier) will be at -5V.
66
4-6. Frequency Sweep
The function generator can perform a sweep for sine, square or ramp waveforms, but not noise, and pulse. When Sweep mode is enabled, Burst or any other modulation modes will be disabled. When sweep is enabled, burst mode is automatically disabled.
In Sweep mode the function generator will sweep from a start frequency to a stop frequency over a number of designated steps. The step spacing of the sweep can linear or logarithmic. The function generator can also sweep up or sweep down in frequency. If manual or external sources are used, the function generator can be used to output a single sweep.
67
4-6-1. Selecting Sweep Mode
The Sweep button is used to output a sweep. If no settings have been configured, the default settings for output amplitude, offset and frequency are used.
4-6-2. Setting Start and Stop Frequency
Sweep
The start and stop frequencies define the upper and lower sweep limits. The function generator will sweep from the start through to the stop frequency and cycle back to the start frequency. The sweep is phase continuous over the full range sweep range (1μHz-25MHz).
Panel Operation 1. Press the SWEEP key.
2. Press F3 (Start) or F4 (Stop) to selelect the start or stop frequency.
Sweep
Start
F3
~
Stop
F4
3. The Start or Stop parameter will become highlighted in the waveform display area.
Start
Stop
4. Use the arrow keys and scroll wheel or number pad to enter the
Stop/Start frequency.
7
4
1
0
8
5
2
9
6
3
/
68
Range
5. Press F1~F5 to select the
Start/Stop frequency units.
Sweep Range uHz
~
MHz
F1
1μHz~25MHz (Sine wave)
F5
1μHz~1MHz (Ramp wave)
1μHz~15MHz (Square wave)
Start - Default
Stop - Default
100Hz
1kHz
Note To sweep from low to high frequencies, set the start frequency less than the stop frequency.
To sweep from high to low frequencies, set the start frequency greater than the stop frequency.
When marker is off, the SYNC signal is a square wave with a duty cycle of 50%. At the start of the sweep, the
SYNC signal is at a TTL low level that rises to a TTL high level at the frequency midpoint. The frequency of the
SYNC signal is equal to the sweep time.
When marker is on, at the start of the sweep, the SYNC signal is at a TTL high level that drops to a TTL low level at the marker. The SYNC signal is output from the mark output terminal.
4-6-3. Center Frequency and Span
A center frequency and span can be set to determine the upper and lower sweep limits (start/stop).
Panel Operation 1. Press the SWEEP key.
Sweep
2. Press F5 (More).
More
3. Press F2 (Span) or F3 (Center) to select the span or center.
Span
F2
~
F5
Center
F3
4. The Span or Center parameters will become highlighted in the waveform display area.
69
Span
Center
Range
5. Use the arrow keys and scroll wheel or number pad to enter the
Span/Center frequency.
7
4
1
8
5
2
9
6
3
0 /
6. Press F1~F5 to select the
Start/Stop frequency units. uHz
F1
~
MHz
F5
Center frequency 1μHz~25MHz (sine wave)
1μHz~1MHz (Ramp wave)
1μHz~15MHz (square wave)
Span frequency DC~25MHz
Default center
Default span
(sine wave)
DC ~1MHz (Ramp wave)
1μHz~15MHz (square wave)
550Hz
900Hz
70
Note To sweep from low to high frequencies, set a positive span.To sweep from high to low frequencies, set a negative span.
When marker is off, the SYNC signal is a square wave with a duty cycle of 50%. At the start of the sweep, the
SYNC signal is at a TTL low level that rises to a TTL high level at the frequency midpoint. The frequency of the
SYNC signal is equal to the sweep time.
When marker is on, at the start of the sweep, the SYNC signal is at a TTL high level that drops to a TTL low level at the marker. The SYNC signal is output from the mark output terminal.
4-6-4. Sweep Mode
Sweep mode is used to select between linear or logarithmic sweeping. Linear sweeping is the default setting.
Panel Operation 1. Press the SWEEP key.
2. Press F2 (Type).
Sweep
3. To select linear or logarithmic sweep, press F1 (Linear) or F2
(Log).
4. Press Return to return to the previous menu.
Type
Linear
F1
~
F2
Log
F2
Return
71
4-6-5. Sweep Time
The sweep time is used to determine how long it takes to perform a sweep from the start to stop frequencies. The function generator automatically determines the number of discrete frequencies used in the scan depending on the length of the scan.
Panel Operation 1. Press the SWEEP key.
Sweep
2. Press F5 (More).
More F5
3. Press F1 (SWP Time).
SWP Time F1
4. The Time parameter will become highlighted in the waveform display area.
Range
5. Use the selector keys and scroll wheel or number pad to enter the
Sweep time.
7
4
1
8
5
2
9
6
3
0 /
6. Press F1~F2 to select the time unit.
Sweep time
Default time
1ms ~ 500s
1s mSEC
F1
~
SEC
F2
72
4-6-6. Marker Frequency
The marker frequency is the frequency at which the marker signal goes low (The marker signal is high at the start of each sweep). The marker signal is output from the Trigger OUT terminal on the rear panel. The default is 550 Hz.
Panel Operation 1. Press the SWEEP key.
Sweep
2. Press F5 (More).
More F5
3. Press F4 (Marker) Marker F4
4. Press F2 (ON/OFF) to toggle the marker on or off.
ON/OFF F2
5. Press F1 (Freq) to select the marker frequency.
Freq F1
6. The Marker parameter will become highlighted in the waveform display area.
7. Use the arrow keys and scroll wheel or number pad to enter the frequency.
7
4
1
0
8
5
2
9
6
3
/
8. Press F1~F5 to select the frequency unit. uHz
F1
~
73
MHz
F5
Range
Note
Frequency
1μHz~25MHz(Sine wave)
1μHz~1MHz (Ramp wave)
1μHz~15MHz (square wave)
Default 550Hz
The marker frequency must be set to a value between the start and stop frequencies. If no value is set, the marker frequency is set to the average of the start and stop frequencies.
Marker mode will override SYNC mode settings when sweep mode is active.
4-6-7. Sweep Trigger Source
In sweep mode the function generator will sweep each time a trigger signal is received. After a sweep output has completed, the function generator outputs the start frequency and waits for a trigger signal before completing the sweep. The default trigger source is internal.
Panel Operation 1. Press the SWEEP key.
Sweep
2. Press F1 (Source).
3. To select the trigger source, press F1 (Internal), F2 (External) or F3 (Manual).
Source
INT
F1
~
F1
Manual
F3
Note
4. Press Return to return to the previous menu.
Return
Using the Internal source will produce a continuous sweep using the sweep time settings.
With an external source, a sweep is output each time a trigger pulse (TTL) is received from the Trigger IN terminal on the rear panel.
The trigger period must be equal to or greater than the sweep time plus 1ms.
5. If manual is selected, press F1
(Trigger) to manually start each sweep.
Trigger F1
74
4-7. Burst Mode
The function generator can create a waveform burst with a designated number of cycles. Burst mode supports sine, square and ramp waveforms.
4-7-1. Selecting Burst Mode
When burst mode is selected, any modulation or sweep modes will be automatically disabled. If no settings have been configured, the default settings for output amplitude, offset and frequency are used.
Burst
75
4-7-2. Burst Modes
Burst mode can be configured using Triggered (N Cycle mode) or Gated mode.
Using N Cycle/Triggered mode, each time the function generator receives a trigger, the function generator will output a specified number of waveform cycles (burst).
After the burst, the function generator will wait for the next trigger before outputting another burst. N Cycle is the default Burst mode. Triggered mode can use internal or external triggers.
The alternative to using a specified number of cycles, Gated mode uses the external trigger to turn on or off the output. When the Trigger INPUT signal is high, waveforms are continuously output. When the Trigger INPUT signal goes low, the waveforms will stop being output after the last waveform completes its period. The voltage level of the output will remain equal to the starting phase of the burst waveforms, ready for the signal to go high again.
Burst Mode
Triggered (Int)
Burst Count Burst Period Phase
Available Available Available
Trigger Source
Immediate
Triggered (Ext) Available
Gated pulse (Ext) Not used
Not used
Not used
Available
Available
EXT, Bus
Unused
Panel Operation
Note
1. Press the Burst key.
Burst
2. To select either N Cycle (F1) or
Gate (F2).
N Cycle
~
Gate
F1 F2
In gate mode, burst count, burst cycle, trigger source will be ignored, Also trigger source will be only in the external trigger signal.
4-7-3. Burst Frequency
In the N Cycle and Gated modes, the waveform frequency sets the repetition rate of the burst waveforms. In N-Cycle mode, the burst is output at the waveform frequency for the number of cycles set. In Gated mode the waveform frequency is output while the trigger is high. Burst mode supports sine, square or ramp waveforms.
Panel Operation 1. Press the FREQ/Rate key.
FREQ/Rate
2. The FREQ parameter will become highlighted in the parameter window.
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3. Use the arrow keys and scroll wheel or number pad to enter the frequency.
7
4
1
8
5
2
9
6
3
Range
Note
0 /
4. Press F1~F5 to select the frequency unit. uHz
~
MHz
F1 F5
Frequency
Freqency – Ramp
Default
1uHz~25MHz
1uHz~1MHz
1kHz
Waveform frequency and burst period are not the same.
The burst period is the time between the bursts in
N-Cycle mode.
4-7-4. Burst Cycle/Burst Count
The burst cycle (burst count) is used to define the number of cycles that are output for a burst waveform. Burst cycle is only used with N-cycle mode (internal, external or manual source). The default burst cycle is 1.
Panel Operation 1. Press the Burst key.
Burst
2. Press F1 (N Cycle).
N Cycle F1
3. Press F1 (Cycles).
Cycles F1
4. The Cycles parameter will become highlighted in the
Waveform Display area.
77
Range
Note
5. Use the arrow keys and scroll wheel or number pad to enter the number of cycles.
7
4
1
0
8
5
2
9
6
3
/
6. Press F2 to select the Cyc unit.
Cyc F2
Cycles 1~65535
Burst cycles are continuously output when the internal trigger is selected. The burst period determines the rate of bursts and the time between bursts.
Burst cycle must be less than the product of the burst period and wave frequency.
Burst Cycle < (Burst Period x Wave Frequency)
If the burst cycle exceeds the above conditions, the burst period will be automatically increased to satisfy the above conditions.
If gated burst mode is selected, burst cycle is ignored.
Though, if the burst cycle is changed remotely whilst in gated mode, the new burst cycle is remembered when used next.
78
4-7-5. Infinite Burst Count
Panel Operation 1. Press the Burst key.
2. Press F1 (N Cycle).
Note
Burst
N Cycle F1
3. Press F2 (Infinite).
Infinite
Infinite burst is only available when using manual triggering.
F2
4-7-6. Burst Period
The burst period is used to determine the time between the start of one burst and the start of the next burst. It is only used for internally triggered bursts.
Panel Operation 1. Press the Burst key.
2. Press F1 (N Cycle).
3. Press F4 (Period).
Burst
N Cycle F1
Period F4
4. The Period parameter will become highlighted in the
Waveform Display area.
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5. Use the arrow keys and scroll wheel or number pad to enter period time.
7
4
1
8
5
2
9
6
3
Range
Note
0 /
6. Press F1~F3 to choose the period time unit. uSEC
~
SEC
F1 F3
Period time
Default
1ms~500s
10ms
Burst period is only applicable for internal triggers. Burst period settings are ignored when using gated burst mode or for external and manual triggers.
The burst period must be large enough to satisfied the condition below:
Burst Period>Burst Count/Wave frequency + 200ns.
4-7-7. Burst Phase
Burst Phase defines the starting phase of the burst wavefor m. The default is 0˚.
Panel Operation 1. Press the Burst key.
2. Press F1 (N Cycle).
Burst
N Cycle F1
3. Press F3 (Phase).
Phase F3
80
4. The Phase parameter will become highlighted in the
Waveform Display area.
Range
Note
5. Use the arrow keys and scroll wheel or number pad to enter the phase.
7
4
1
0
8
5
2
9
6
3
/
6. Press F2 (Degreee) to select the phase unit.
Degree F2
Phase
Default
-360 ˚~+360˚
0˚
When using sine, square, triangle or ramp waveforms, 0˚ is the point where the waveforms are at zero volts.
0˚ is the starting point of a waveform. For sine, square or
Triangle, Ramp waveforms, 0˚ is at 0 volts (assuming there is no DC offset).
Burst Phase is used for both N cycle and Gated burst modes. In gated burst mode, when the Trigger INPUT signal goes low the output is stopped after the current waveform is finished. The voltage output level will remain equal to the voltage at the starting burst phase.
81
4-7-8. Burst Trigger Source
Each time the function generator receives a trigger in triggered burst (N-Cycle) mode, a waveform burst is output. The number of waveforms in each burst is designated by the burst cycle (burst count). When a burst has completed, the function generator waits for the next trigger. Internal source is the default triggered burst (N-cycle) mode on power up.
Panel Operation 1. Press the Burst key.
2. Press F1 (N Cycle).
Burst
N Cycle F1
3. Press F5 (TRIG set).
4. Choose a trigger type by pressing F1 (INT), F2 (EXT) or
F3 (Manual).
TRIG set
INT
F1
~
F5
Manual
F3
Manual Triggering If a manual source is selected, the
Trigger softkey (F1) must be pressed each time to output a burst.
Trigger F1
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Note When the internal trigger source is chosen, the burst is output continuously at a rate defined by the burst period setting. The interval between bursts is defined by the burst period.
When the external trigger is selected the function generator will receive a trigger signal (TTL) from the
Trigger INPUT terminal on the rear panel. Each time the trigger is received, a burst is output (with the defined number of cycles). If a trigger signal is received during a burst, it is ignored.
When using the manual or external trigger only the burst phase and burst cycle/count are applicable, the burst period is not used.
A time delay can be inserted after each trigger, before the start of a burst.
4-7-9. Burst Delay
Panel Operation 1. Press the Burst key.
Burst
2. Press F1 (N Cycle).
N Cycle F1
3. Press F5 (TRIG set).
TRIG set F5
4. Press F4 (Delay).
Delay F4
5. The Delay parameter will become highlighted in the
Waveform Display area.
83
6. Use the selector keys and scroll wheel or number pad to enter period time.
7
4
8
5
2
9
6
3 1
0 /
Range
7. Press F1~F4 to choose the delay time unit.
Delay time nSEC
F1
0s~655350nS
~
SEC
F4
Default
4-7-10. Burst Trigger Output
0s
The Trig Out terminal on the rear panel can be used for burst or sweep modes to output a rising edge TTL compatible trigger signal. By default the trigger signal is rising edge. The trigger signal is output at the start of each burst.
Panel Operation 1. Press the Burst key.
2. Press F1 (N Cycle).
Note
Burst
N Cycle F1
3. Press F5 (TRIG set).
TRIG set F5
4. Press F5 (TRIG out).
TRIG out F5
5. Press F3 (ON/OFF) to toggle
Trigger out ON/OFF.
ON/OFF F3
6. Select F1 (Rise) or F2 (Fall) edge trigger.
Rise
~
Fall
F1 F2
When the internal trigger is selected, a square wave with a 50% duty cycle is output at the beginning of each burst.
Trig Out cannot be used with manual triggering and will be disabled if manual triggering is set.
For manual triggering, a pulse is output (>1us) from the
Trig Out connector at the start of each burst.
84
85
5. SECONDARY SYSTEM FUNCTION SETTINGS
The secondary system functions are used to store and recall settings, view help files, view the software version, update the firmware, set the buzzer.
5-1. Save and Recall
The FGX-2220 has non-volatile memory to store instrument state and ARB data.
There are 10 memory files numbered 0~9. Each memory file can either store arbitrary waveform data (ARB), settings or both. When data (ARB or Setting data) is stored in a memory file, the data will be shown in red. If a file has no data, it will be shown in blue.
Save/Recall
Properties
ARB
Rate
Frequency
Length
Display horizontal
Display vertical
Output Start
Output length
Setting
Functions
Waveform
Frequency
Pulse Width
Square wave Duty
Ramp Symmetry
Amplitude
Amplitude unit
Offset
Modulation type
Beep setting
Impedance
Main output
Sweep
Source
Type
Marker
Time
Start frequency
86
AM
Source
Shape
Depth
AM frequency
FM
Source
Shape
Deviation
FM frequency
FSK
Source
Shape
Rate
Hop frequency
PM
Source
Shape
Phase deviation
Stop frequency
Center frequency
Span frequency
Marker frequency
Frequency
Burst Type
Source
Trigger out
Type
Cycles
Phase
Period
Delay
Panel Operation 1. Press the UTIL key.
2. Press F1 (Memory).
UTIL
Memory F1
3. Use the scroll wheel to highlight a memory file number.
4. Choose a file operation:
Press F1 to store a file, press F2 to recall a file, or press F3 to delete a file.
Store
Recall
Delete
87
F1
F2
F3
Range
5. Use the scroll wheel to highlight the data type.
ARB, Setting or ARB+Setting
6. Press F5 (Done) to choose the data type.
Memory file
Data type
Done F5
Memory0 ~ Memory9
ARB, Setting, ARB+Setting
Delete All
7. Press F5 (Done) to confirm the operation.
Done
8. To delete all the files for
Memory0~Memory9, press F4.
Delete All
9. Press F1 (Done) to confirm the deletion of all files.
Done
F5
F4
F1
88
5-2. System and Settings
There are a number of miscellaneous settings and firmware settings that can be configured.
5-2-1. Viewing and Updating the Firmware
View Version 1. Press the UTIL key.
UTIL
2. Press F2 (Cal.).
Cal.
F2
3. Press F2 (Software).
Software F2
4. Press F1 (Version) to view the firmware version.
Version
The version information will be shown on screen:
Instrument, Version, FPGA Revision
F1
Update Firmware 5. To update the firmware, insert a
USB flash drive with a firmware file in the USB host drive. Press
F2 (Upgrade).
Upgrade F2
6. Use the scroll wheel to highlight the firmware file. Press
F1(Select)
Select F1
Note
The firmware file (*.bin) must be located in a directory, directly off the USB root directory.
5-2-2. Setting the Buzzer Sound
Background Turns the beeper on or off.
Panel Operation 1. Press the UTIL key.
2. Press F3 (System).
89
UTIL
System F3
3. PressF3 (Beep) to toggle the buzzer sound on or off.
Beep
4. Press F1(ON) or Press
F2(OFF)
ON
F1
~
5-2-3. Frequency Counter
Example: Turn on the frequency counter. Gate time: 1 second.
F3
OFF
F2
Output: N/A
Input:
Trigger
IN
1. Press UTIL, F5 (Counter).
UTIL Counter
MOD
2. Press F1 (Gate Time), and press
F3 (1 Sec) to choose a gate time of 1 second.
Gate Time 1 Sec
OUT
Trigger Counter
3. Connect the signal of interest to the Frequency counter input on the rear panel.
4. Input a 1kHz square wave signal into the Counter input on the rear panel. Set the gate time to 1S.
90
5-3. Dual channel Settings
5-3-1. Frequency Coupling
1. Press UTIL, F4 (Dual Chan) to enter the coupling function.
UTIL Dual Chan
2. Press F1 (Freq Cpl) to select the frequency coupling function.
Freq Cpl F1
3. Press F2 (Offset). The offset is the frequency difference between
CH1 and CH2. Use the number keys or scroll wheel to enter the offset.
Offset
There are two different coupling modes. They are calculated as follows:
Offset=CH2-CH1
Ratio=CH2/CH1
4. Input an offset value of 1kHz.
Press F1~ F5 to select the units. uHz
F1
~
F1
MHz
F5
The frequency of channel 2 becomes 2kHz (CH2=CH1 +
Offset).
91
5. Change the frequency coupling mode to Ratio. Set the ratio to 2.
The frequency of CH2 automatically changes accordingly to match the ratio (CH2=CH1*Ratio).
5-3-2. Amplitude Coupling
1. The following assumes that the amplitude has already been set to 4Vpp with a DC offset of 1Vdc.
2. Press UTIL, F4 (Dual Chan) to enter the coupling function.
UTIL Dual Chan
3. Press F2 (Ampl Cpl), F1 (ON) to select the amplitude coupling function.
Ampl Cpl On
4. The amplitude and offset between both channel is coupled. Any changes in amplitude in the current channel is reflected in the other channel.
92
5-3-3. Tracking
1. The method for outputting a square wave has been previously described. Use this method to output a
2kHz squarewave from CH1 with an amplitude of
5Vpp and a DC offset of 1Vdc.
2. Press UTIL, F4 (Dual Chan) to enter the coupling function.
3. Press F3 (Tracking), F2 (On) to turn on the tracking function.
UTIL Dual Chan
Tracking On
4. When tracking is turned on, parameters such as amplitude and frequency from the current channel are mirrored on the other channel.
93
6. CHANNEL SETTINGS
The channel settings chapter shows how to set the output impedance, output phase and DSO connection settings.
6-1. Output Impedance
Background The FGX-2220 has selectable output impedances: 50Ω or high impedance. The default output impedance is
50Ω. The output impedances are to be used as a reference only. If the actual load impedance is different to that specified, then the actual amplitude and offset will vary accordingly.
Panel Operation
Note
1. Press the CH1/CH2 key. CH1/CH2
The load function can only be used if the ARB, MOD,
SWEEP or BURST functions are not active.
2. Press F1 (Load).
Load F1
3. Select F1 (50 OHM) or F2 (High
Z) to select the output impedance.
50 OHM
~
F1
High Z
F2
94
6-2. Selecting the Output Phase
Panel operation
Note
1. Press the CH1/CH2 key. CH1/CH2
The phase function can only be used if the ARB, MOD,
SWEEP or BURST functions are not active.
2. Press F4 (Phase) and then press F1 (Phase)
Phase F4
Phase F1
3. The Phase parameter in the parameter window will become highlighted.
4. Use the arrow keys and scroll wheel or number pad to enter the output phase.
7
4
1
0
8
5
2
9
6
3
/
5. Press F5 (Degree).
Degree F5
95
6-3. Synchronizing the Phase
Background Synchronizes both the outputs on the FGX-2220.
Panel Operation 1. Press the CH1/CH2 key. CH1/CH2
2. Press F4 (Phase).
Phase F4
3. Press F2 (S_Phase) to synchronize the phase of the channels.
S_Phase F2
6-4. DSO Link
Background DSO Link enables the FGX-2220 to receive lossless data from a DCS-7500A Series DSO to create ARB data.
Connect the FGX-2220 USB host port to the DCS-7500A ’s USB B device port.
→
Panel Operation 1. Press the CH1/CH2 key. CH1/ CH2
2. Press F5 (DSO Link).
DSO Link F5
Load
3. Press F1 (Search).
96
Phase
DSO Link
Search F1
4. The “DCS Find” will be displayed.
Load
GDS-XXXXFind!
Phase
5. To select a DSO channel, Press
F2 (CH1), F3 (CH2), F4 (CH3) or
F5 (CH4). The acquired data can then be displayed.
DSO Link
~
CH1
F2
CH4
F5
Display
Edit
Built in
Output
More
97
7. ARBITRARY WAVEFORMS
The FGX-2220 can create user-defined arbitrary waveforms with a sample rate of
120MHz. Each waveform can include up to 4k of data points with a vertical range of
±511.
7-1. Inserting Built-In Waveforms
The FGX-2220 includes 66 common waveforms, such as math waveforms, windowing functions and engineering waveforms.
7-1-1. Create an AbsAtan Waveform
Panel Operation 1. Press the ARB key.
ARB
2. Press F3(Built in).
Built in F3
3. Press F4(Wave).
Wave F4
4. Press F1(Common).
Common F1
5. Use the scroll wheel to select “AbsAtan” from the built-in Common waveforms.
Common
Math
A b s a ta n
A b s s in h a rf
A tta lt
D iric _ o d d
H a rv e r c o s in e
N _ p u ls e
R e c tp u ls
Ab s s in
Am p a lt
D iric _ e v e n
G a u s p u ls
H a rv e r s in e
N e g r a m p
R o u n d h a rf
Window
Engineer
Select
6. Press F5(Select) to select AbsAtan waveform
Select F5
7. Press F1(Start) and set the start position of the AbsAtan waveform.
Start F1
98
8. You can also change the length and scale of the waveform by pressing F2(Length) or F3(Scale).
Length
Scale
F2
F3
9. Press F5 (Done) to complete the operation
Done F5
10. Press return to return to the previous menu.
Return
Below an Absatan wave created at start:0, Length: 33,
Scale: 511
7-1-2. Built-in Waveform
COMMON
Math
Window
Engineer
Absatan
Attalt
Abssin Abssinharf Ampalt
Diric_even Diric_odd
Harvercosin Harversine N_pulse
Gauspuls
Negramp
Rectpuls
Stair_ud
Tripuls
Roundharf Sawtoot
Stair_up Stepwsp
Sinetra
Trapezia
Arccos
Arcsin
Cosh
Expofall
Lorentz
Arccot
Arcsinh
Arccsc
Arctan
Cot Csc
Exporise Gauss
Sec Sech
Arcsec
Arctanh
Dlorentz
Ln
Sinec
Sinh Sqrt
Barthannwin Bartlett
Tan Tanh
Blackman Bohmanwin
Cherbyshev Flattopwin Hamming Hann
Hanning Kaiser Triang Tukeywin
Airy
Legendre
Bessel
Neumann
Betainc Gamma
99
7-2. Display an Arbitrary Waveform
7-2-1. Set the Horizontal Display Range
The horizontal window bounds can be set in one of two ways: Using a start point and length, or a center point and length.
Panel Operation 1. Press the ARB key.
2. Press F1 (Display) to enter the display menu.
3. Press F1 (Horizon) to enter the horizontal menu.
ARB
Display F1
Horizon F1
Using a Start Point 4. Press F1( Start)
Start F1
5. The H_From parameter will become highlighted.
6. Use the arrow keys and scroll wheel or number pad to enter the
H_From value.
7
4
1
0
8
5
2
9
6
3
/
7. Press Clear ( F1) to cancel.
Clear
Enter
F1
F2
8. Press F2 (Enter) to save the settings.
9. Press Return to return to the previous menu.
Setting the Length 10. Repeat steps 4~9 for Length
(F2).
Using a Center
Point
11. Repeat steps 4~9 for Center
(F3).
100
Return
Length
Center
F2
F3
Zoom in
Zoom out
12. To zoom into the arbitrary waveform, press F4 (Zoom In).
The Zoom In function will reduce the length by half each time the function is used. The minimum allowable length is 3.
Zoom In F4
13. To zoom out from the center point of the waveform, press F5 (Zoom out). The Zoom out function will increase the length by 2. The maximum allowable length is
4096.
Zoom out F5
Below, an arbitrary waveform has a start of 0, length of 200 and is centered at 100.
7-2-2. Set the Vertical Display Properties
Like the horizontal properties, the vertical display properties of the waveform display can be created in two ways: Setting high and low values, or setting the center point.
Panel Operation 1. Press the ARB key.
ARB
2. Press F1 (Display).
Display F1
3. Press F2 (Vertical).
Vertical F2
101
Setting the Low
Point
4. Press F1 (Low).
Low F1
5. The V_Low parameter will become highlighted.
6. Use the arrow keys and scroll wheel or number pad to enter the
V_Low value.
7
4
1
0
8
5
2
9
6
3
/
7. Press Clear (F1) to cancel.
Clear F1
8. Press F2 (Enter) to save the settings.
9. Press Return to return to the previous menu.
Setting the High
Point
10. Repeat steps 4~9 for V_High
(F2).
Enter
Return
High
Setting the Center
Point
11. Repeat steps 4~9 for Center
(F3).
Zoom
Center
12. To zoom in from the center of the arbitrary waveform, press F4
(Zoom in). The Zoom in function will reduce the length by half each time the function is used.
The minimum allowable vertical low is -2, and the minimum vertical high is 2.
Zoom in
13. To zoom out of the waveform, press F5 (Zoom out). The Zoom out function will increase the length by 2. The Vertical low maximum can be set to -511 and the vertical high maximum can be set to +511.
Zoom out
102
F2
F2
F3
F4
F5
Below, the AbsAtan wave is with a vertical low of -511, a vertical high 511 and a center of 0.
7-2-3. Page Navigation (Back Page)
Background When viewing the waveform, the display window can be moved forward and backward using the Next/Back Page functions.
Panel Operation 1. Press the ARB key.
ARB
2. Press F1 (Display).
Display F1
3. Press F4 (Back Page) to move the display window one view length backward.
Back Page F4
H_From* = H_From - Length
Center*= Center
– Length
*Length until 0
Below, shows the display after Back Page has been pressed.
H_From: 200 0
Length: 200
Center:300 100
103
7-2-4. Page Navigation (Next Page)
Background When viewing the waveform, the display window can be moved forward and backward using the Next/Back Page functions.
Panel Operation 1. Press the ARB key.
ARB
2. Press F1 (Display).
Display F1
3. Press F3 (Next Page) to move the display window one view length forward.
Next Page F3
104
H_From*＝H_From + Length
Center=Center + Length
*H_From +Length ≤ 4096
Below, shows the display after Next Page has been pressed.
H_From: 0 200
Length: 200
Center:100 300
105
7-2-5. Display
Panel Operation 1. Press the ARB key.
ARB
2. Press F1 (Display).
Display F1
To make the display window cover the whole waveform, press
F5 (Overview).
Horizontal: 0~4095
Vertical: 511~ -511
Overview F5
Below shows the display after Overview has been selected.
H_From: 0 0
Length: 4004096
Center:200 2048
Vertical low/high: ±511
7-3. Editing an Arbitrary Wavefrom
7-3-1. Adding a Point to an Arbitrary Waveform
Background The FGX-2220 has a powerful editing function that allows you to create points or lines anywhere on the waveform.
Panel Operation 1. Press the ARB key.
ARB
106
2. Press F2 (Edit).
Edit F2
3. Press F1 (Point).
Point F1
4. Press F1 (Address).
Address
5. The Address parameter becomes highlighted.
F1
6. Use the arrow keys and scroll wheel or number pad to enter the
Address value.
7
4
1
0
8
5
2 3
/
9
6
7. Press F2 (Enter) to save the settings.
8. Press Return to return to the previous menu.
Enter
Return
F2
9. Press F2 (Data).
Data
10. The Data parameter will become highlighted.
F2
11. Use the selector keys and scroll wheel or number pad to enter a
Data value.
7
4
1
0
8
5
2
9
6
3
/
12. Press F2 (Enter) to save the settings.
13. Press Return to return to the previous menu.
Enter
Return
F2
14. Press return again to go back to the ARB menu.
107
Return
In the following figure the edited address is shown in red.
Address 100，Data 200
7-3-2. Adding a Line to an Arbitrary Waveform
Background The FGX-2220 has a powerful editing function that allows you to create points or lines anywhere on the waveform.
Panel Operation 1. Press the ARB key.
ARB
2. Press F2 (Edit).
Edit F2
3. Press F2 (Line).
Line F2
4. Press F1 (Start ADD).
Start ADD F1
5. The Start Address parameter will be highlighted in red.
108
6. Use the arrowkeys keys and scroll wheel or number pad to enter the start address.
7
4
1
0
8
5
2
9
6
3
/
7. Press F2 (Enter) to save the settings.
8. Press Return to return to the previous menu.
Enter
Return
F2
9. Repeat steps 4~8 for Start Data (F2), Stop Address
(F3) and Stop Data (F4).
10. Press F5 (Done) to confirm the line edit.
Done F5
11. Press Return to return to the previous menu.
Return
The red line was created below with the following properties:
Start Address: 0, Start Data: 0
Stop Address: 32, Stop Data: 0
109
7-3-3. Copy a Waveform
Panel Operation 1. Press the ARB key.
ARB
2. Press F2 (Edit).
Edit F2
3. Press F3 (Copy).
Copy F3
4. Press F1 (Start).
Start F1
5. The Copy From properties will become highlighted in red.
6. The the arrow keys and scroll wheel or number pad to enter the
Copy From address.
7
4
1
0
8
5
2
9
6
3
/
7. Press F2 (Enter) to save the settings.
8. Press Return to return to the previous menu.
Enter
Return
F2
9. Repeat steps 4~8 for Length (F2) and Paste To (F3).
10. Press F5 (Done) to confirm the selection.
Done F5
11. Press Return to return to the previous menu.
Return
A section of the waveform from points 0~33 was copied to points 50~83:
Copy From: 0
Length: 33
To: 50
110
7-3-4. Clear the Waveform
Panel Operation 1. Press the ARB key.
ARB
2. Press F2 (Edit).
Edit F2
3. Press F4 (Clear).
Clear F4
4. Press F1 (Start).
Start F1
5. The Clear From properties will become highlighted in red.
6. Use the arrow keys and scroll wheel or number pad to enter the
Clear From address.
7
4
1
0
8
5
2
9
6
3
/
7. Press F2 (Enter) to save the settings.
Enter F2
8. Press Return to return to the previous menu.
Return
111
Delete All
9. Repeat steps 4~8 for Length
(F2).
10. Press F3 (Done) to clear the selected section of the arbitrary waveform.
11. Press F4 (ALL) to delete the whole waveform.
Length
Done
ALL
F2
F3
F4
12. Press F1 (Done) again to confirm the deletion.
Done
13. Press Return return to the previous menu.
Clear From: 20, Length: 33.
Return
F1
The same area after being cleared:
112
The result after the whole waveform is deleted:
7-3-5.ARB Protection
The protection function designates an area of the arbitrary waveform that cannot be altered.
Panel Operation 1. Press the ARB key.
ARB
2. Press F2 (Edit).
Edit F2
3. Press F5 (Protect).
Protect F5
4. Press F2 (Start).
Start F2
5. The Protect Start properties will become highlighted in red.
6. Use the arrow keys and scroll wheel or number pad to enter the
Protect Start address.
7
4
1
0
8
5
2
9
6
3
/
7. Press F2 (Enter) to save the settings.
113
Enter F2
Protect All
Unprotect All
8. Press Return to return to the previous menu.
9. Repeat steps 4~8 for Length
(F3).
10. Press F4 (Done) to confirm the protected area.
Return
Length
Done
F3
F4
11. Press F1 (ALL) to protect the whole waveform.
12. Press F1 (Done) to confirm.
ALL F1
Done F1
13. Press F5 (Unprotect) to unprotect the whole waveform.
Unprotect F5
14. Press F1 (Done) to confirm.
Done F1
15. The waveform background will return back to black.
The property “Protect Off” be will grayed out.
Below, the protected areas of the waveform are shown with an orange background:
Start:0, Length: 100.
114
7-4.Ouput an Arbitrary Waveform
The arbitrary waveform generator can output up to 4k points (2~4096).
7-4-1. Ouput Arbitrary Waveform
Panel Operation 1. Press the ARB key.
ARB
2. Press F4 (Output).
Output F4
3. Press F1 (Start).
Start F1
4. The Start property will become highlighted in red.
5. Use the arrow keys and scroll wheel or number pad to enter the
Start address.
7
4
1
0
8
5
2
9
6
3
/
6. Press F2 (Enter) to confirm the start point.
Enter F2
7. Press Return to return to the previous menu.
Return
115
8. Repeat steps 4~7 for Length
(F2).
Length
9. Press Return to return to the previous menu.
Return
The front panel terminal will output the following waveform.
Start 0，Length 500
F2
7-5. Saving/Loading an Arbitrary Waveform
The FGX-2220 can save and load arbitrary waveforms from 10 internal memory slots. Arbitrary waveforms can also be saved and loaded from a USB memory stick.
7-5-1. Saving a Waveform to Internal Memory
Panel Operation 1. Press the ARB key.
ARB
2. Press F5 (More).
More F5
3. Press F1 (Save).
Save F1
4. Press F1 (Start).
Start F1
5. The Start property will become highlighted in red.
116
6. Use the arrow keys and scroll wheel or number pad to enter the
Start address.
7
4
1
0
8
5
2
9
6
3
/
7. Press F2 (Enter) to confirm the start point.
8. Press Return to return to the previous menu.
Enter
Return
F2
9. Repeat steps 4~8 for Length
(F2).
10. Press F3 (Memory).
Length F2
Memory F3
11. Select a memory file using the scroll wheel.
Memory0~Memory9
12. Press F1 (Select) to save the selected memory file.
Select F1
13. Press Return to return to the previous menu.
Return
Below the file Memory0 is selected using the scroll wheel.
117
7-5-2. Saving a Waveform to USB Memory
Panel Operation 1. Press the ARB key.
ARB
2. Press F5 (More).
More F5
3. Press F1 (Save).
Save F1
4. Press F1 (Start).
Start F1
5. The Start propery will become highlighted in red.
6. Use the arrow keys and scroll wheel or number pad to enter the
Start address.
7
4
1
0
8
5
2
9
6
3
/
7. Press F2 (Enter) to confirm the start point.
Enter F2
8. Press Return to return to the previous menu.
Return
9. Repeat steps 4~8 for Length
(F2).
10. Press F4 (USB).
Length
USB
F2
F4
11. Use the scroll wheel to navigate the file system.
12. Press Select to select directories or files.
Select
Create a Folder 1. Press F2 (New Folder).
F1
New Folder F1
118
2. The text editor will appear with a default folder name of “NEW_FOL”.
New Folder:
NEW_FOL
A B C D E F G H I J K L M
N
1
O
2
P Q
3 4
R S T U V W X Y Z
5 6 7 8 9 0
_
-
3. Use the scroll wheel to move the cursor.
4. Use F1 (Enter Char) or F2
(Backspace) to create a folder name.
Enter Char
~
Backspace
F1 F2
5. Press F5 (Save) to save the folder name.
Save F5
Create a New File 1. Press F3 (New File). New File F3
2. The text editor will appear with a default file name of
“NEW_FIL”.
New File(CSV):
NEW_FIL
A
N O
1
B C D E F G H I
2
P
3
Q
4
R
5
S
6
T
7
U
8
V
9
J
W
0
K
X
L
Y
_
M
Z
-
119
3. Use the scroll wheel to move the cursor.
4. Use F1 (Enter Char) or F2
(Backspace) to create a file name.
Enter Char
~
Backspace
F1 F2
5. Press F5 (Save) to save the file name.
Save F5
Below the folder, BIN, has been created in the root directory.
7-5-3. Load a Waveform from Internal Memory
Panel Operation 1. Press the ARBkey.
2. Press F5 (More).
3. Press F2 (Load).
4. Press F1 (Memory).
ARB
More F5
Load
Memory
F2
F1
120
5. Use the scroll whell to choose a memory file.
6. Press Select to load the selected memory file.
Select F1
7. Press F3 (To) to choose the starting point for the loaded waveform.
To F3
8. The Load To parameter will become highlighted in red.
9. Use the selector keys and scroll wheel or number pad to enter the starting point.
7
4
1
0
8
5
2
9
6
3
/
10. Press F2(Enter) to confirm the start point.
11. Press Return to return to the previous menu.
Enter
Return
F2
12. Press F4(Done).
Done F4
Below the file Memory0 is selected using the scroll wheel loaded to position 0.
121
7-5-4. Load a Waveform from USB
Panel Operation 1. Press the ARB key.
2. Press F5 (More).
3. Press F2 (Load).
4. Press F2 (USB).
ARB
More F5
Load F2
USB F2
122
5. Use the scroll wheel to choose a file name.
6. Press F1 (Select) to select the file to load.
Select F1
7. Press F3 (To) to choose the starting point for the loaded waveform.
To F3
8. The Load To property will become highlighted in red.
9. Use the arrow keys and scroll wheel or number pad to enter the starting point.
7
4
1
0
8
5
2
9
6
3
/
10. Press F2(Enter) to confirm the
Start point.
Enter F2
11. Press F4(Done).
Done F4
Below the file FGX.CSV is selected using the scroll wheel loaded to position 0.
123
124
8. REMOTE INTERFACE
8-1. Establishing a Remote Connection
The FGX-2220 supports USB remote connections.
8-1-1. Configure USB interface
USB configuration PC side connector Type A, host
FGX-2220 side connector Type B, slave
Speed
Class
1.1/2.0 (full speed)
USB-CDC
Panel Operation 1. Connect the USB cable to the rear panel USB B (slave) port.
2. When the PC requests for the USB driver, select
XXXXXXX.inf included in the software package or download the driver from our website, www.texio.co.jp
3. If the PC can not recognize the new hardware due to the security, Please go to update the driver from the
“Other device” in the Device Manager.
8-1-2. Remote control terminal connection
Terminal application
Functionality check
Invoke the terminal application such as MTTTY
(Multi-Threaded TTY) or PuTTY. For USB, set the COM port, baud rate, stop bit, data bit, and parity accordingly.
To check the COM port No, see the Device Manager in the PC. For Windows , Control panel → System →
Hardware tab.
Run this query command via the terminal.
*idn?
This should return the Manufacturer, Model number,
Serial number, and Firmware version in the following format.
TEXIO, FGX-2220, SN:XXXXXXXX,Vm.mm
Note: ^j or ^m can be used as the terminal character when using a terminal program.
125
PC Software
Display
The proprietary PC software, downloadable from our website, can be used for remote control.
When a remote connection is established all panel keys are locked bar F5.
1. Press REM/LOCK (F5) to return the function generator to local mode.
REM/LOCK F5
8-1-3. Command Syntax
Compatible standard
IEEE488-19992 (fully compatible)
SCPI, 1994 (partially compatible)
Command Tree The SCPI standard is an ASCII based standard that defines the command syntax and structure for programmable instruments.
Commands are based on a hierarchical tree structure.
Each command keyword is a node on the command tree with the first keyword as the root node. Each sub node is separated with a colon.
Shown below is a section of the SOURce[1|2] root node and the :PM and :PULSe sub nodes.
Root node :SOURce[1|2]
2 nd node
:PM
:PULSe
3 rd node SOURCE Shape
126
:PERiod :WIDTh
Command types Commands can be separated in to three distinc types, simple commands, compound commands and queries.
Simple A single command with/without a parameter
Example *OPC
Compound
Example
Query
Example
Two or more commands separated by a colon (:) with/without a parameter
SOURce1:PULSe:WIDTh
A query is a simple or compound command followed by a question mark (?). A parameter (data) is returned. The maximum or minimum value for a parameter can also be queried where applicable.
SOURce1:FREQuency?
SOURce1:FREQuency? MIN
Command forms Commands and queries have two different forms, long and short. The command syntax is written with the short form of the command in capitals and the remainder (long form) in lower case.
long long
SOURce1:DCOffset
short short
The commands can be written in capitals or lower-case, just so long as the short or long forms are complete. An incomplete command will not be recognized.
Below are examples of correctly written commands:
LONG SOURce1:DCOffset
SOURCE1:DCOFFSET source1:dcoffset
SHORT SOUR1:DCO sour1:dco
Command Format SOURce1:DCOffset < offset>LF 1: command header
1 2 3 4 2: single space
3: parameter
4: message terminator
127
Square Brackets
[ ]
Braces {}
Angled Brackets
<>
Bars |
Parameters
Commands that contain squares brackets indicate that the contents are optional. The function of the command is the same with or without the square bracketed items.
Brackets are not sent with the command.
For example, the frequency query below can use any of the following 3 forms:
SOURce1:FREQuency? [MINimum|MAXimum]
SOURce1:FREQuency? MAXimum
SOURce1:FREQuency? MINimum
SOURce1:FREQuency?
Commands that contain braces indicate one item within the braces must be chosen. Braces are not sent with the command.
Angle brackets are used to indicate that a value must be specified for the parameter. See the parameter description below for details. Angled brackets are not sent with the command.
Bars are used to separate multiple parameter choices in the command format.
Type
<Boolean>
Description
Boolean logic
Example
0, 1/ON,OFF
<NR1>
<NR2>
<NR3>
<NRf>
<NRf+>
<Numeric>
<aard>
<discrete> integers 0, 1, 2, 3 decimal numbers 0.1, 3.14, 8.5 floating point 4.5e-1, 8.25e+1 any of NR1, 2, 3 1, 1.5, 4.5e-1
1, 1.5, 4.5e-1
MAX, MIN,
NRf type with a suffix including
MINimum,
MAXimum or
DEFault parameters.
Arbitrary ASCII characters.
Discrete ASCII character parameters
IMM, EXT, MAN
128
Message terminators
Note
Command
Separators
<frequency>
<peak deviation in Hz>
NRf+ type including frequency unit suffixes.
1 KHZ, 1.0 HZ,
ΜHZ
<rate in Hz>
<amplitude> NRf+ type including voltage peak to peak.
VPP
<offset>
<seconds>
NRf+ type including volt unit suffixes.
V
NRf+ type including time unit suffixes.
NS, S MS US
NRf type N/A <percent>
<depth in percent>
LF CR
LF
EOI line feed code (new line) and carriage return. line feed code (new line)
IEEE-488 EOI (End-Or-Identify)
^j or ^m should be used when using a terminal program.
Space
Colon (:)
Semicolon (;)
Colon +
Semicolon (:;)
A space is used to separate a parameter from a keyword/command header.
A colon is used to separate keywords on each node.
A semi colon is used to separate subcommands that have the same node level.
For example:
SOURce[1|2]:DCOffset?
SOURce[1|2]:OUTPut?
SOURce1:DCOffset?;OUTPut?
A colon and semicolon can be used to combine commands from different node levels.
For example:
SOURce1:PM:SOURce?
SOURce:PULSe:WIDTh?
SOURce1:PM:SOURce?:;SOURc e:PULSe:WIDTh?
129
Comma (,) When a command uses multiple parameters, a comma is used to separate the parameters.
For example:
SOURce:APPLy:SQUare 10KHZ,
2.0 VPP, -1V
8-2. Command List
8-3-1. SYSTem:ERRor? ............................................................................... 133
8-3-2. *IDN? ................................................................................................. 133
8-3-3. *RST .................................................................................................. 133
8-3-4. SYSTem:VERSion? ........................................................................... 134
8-3-5. *OPC ................................................................................................. 134
8-3-6. *OPC? ............................................................................................... 135
8-4-1. *CLS .................................................................................................. 135
8-4-2. *ESE .................................................................................................. 135
8-4-3. *ESR? ................................................................................................ 136
8-4-4. *STB? ................................................................................................ 136
8-4-5. *SRE .................................................................................................. 137
8-5-1. SYSTem:LOCal ................................................................................. 137
8-5-2. SYSTem:REMote .............................................................................. 138
8-6-1. SOURce[1|2]:APPLy:SINusoid .......................................................... 139
8-6-2. SOURce[1|2]:APPLy:SQUare ............................................................ 140
8-6-3. SOURce[1|2]:APPLy:RAMP .............................................................. 140
8-6-4. SOURce[1|2]:APPLy:PULSe ............................................................. 141
8-6-5. SOURce[1|2]:APPLy:NOISe .............................................................. 141
8-6-6. SOURce[1|2]:APPLy:USER ............................................................... 142
8-6-7. SOURce[1|2]:APPLy? ........................................................................ 142
8-7-1. SOURce[1|2]:FUNCtion ..................................................................... 143
8-7-2. SOURce[1|2]:FREQuency ................................................................. 144
8-7-3. SOURce[1|2]:AMPlitude .................................................................... 145
8-7-4. SOURce[1|2]:DCOffset ...................................................................... 146
8-7-5. SOURce[1|2]:SQUare:DCYCle .......................................................... 147
8-7-6. SOURce[1|2]:RAMP:SYMMetry ......................................................... 147
8-7-7. OUTPut[1|2] ....................................................................................... 148
8-7-8. OUTPut[1|2]:LOAD ............................................................................ 149
8-7-9. SOURce[1|2]:VOLTage:UNIT ............................................................ 149
8-8-1. SOURce[1|2]:PULSe:PERiod ............................................................ 150
8-8-2. SOURce[1|2]:PULSe:WIDTh ............................................................. 151
8-9-1. AM Overview ..................................................................................... 152
8-9-2. SOURce[1|2]:AM:STATe ................................................................... 153
8-9-3. SOURce[1|2]:AM:SOURce ................................................................ 153
8-9-4. SOURce[1|2]:AM:INTernal:FUNCtion ................................................ 154
8-9-5. SOURce[1|2]:AM:INTernal:FREQuency ............................................ 154
8-9-6. SOURce[1|2]:AM:DEPTh ................................................................... 155
8-10-1. FM Overview .................................................................................... 156
8-10-2. SOURce[1|2]:FM:STATe ................................................................. 156
8-10-3. SOURce[1|2]:FM:SOURce .............................................................. 157
130
8-10-4. SOURce[1|2]:FM:INTernal:FUNCtion .............................................. 157
8-10-5. SOURce[1|2]:FM:INTernal:FREQuency .......................................... 158
8-10-6. SOURce[1|2]:FM:DEViation ............................................................. 159
8-11-1. FSK Overview .................................................................................. 160
8-11-2. SOURce[1|2]:FSKey:STATe ............................................................ 160
8-11-3. SOURce[1|2]:FSKey:SOURce ......................................................... 161
8-11-4. SOURce[1|2]:FSKey:FREQuency ................................................... 161
8-11-5. SOURce[1|2]:FSKey:INTernal:RATE ............................................... 162
8-12-1. PM Overview ................................................................................... 163
8-12-2. SOURce[1|2]:PM:STATe ................................................................. 163
8-12-3. SOURce[1|2]:PM:SOURce .............................................................. 164
8-12-4. SOURce[1|2]:PM:INTernal:FUNction ............................................... 164
8-12-5. SOURce[1|2]:PM:INTernal:FREQuency .......................................... 165
8-12-6. SOURce[1|2]:PM:DEViation ............................................................ 166
8-13-1. SUM Overview ................................................................................. 167
8-13-2. SOURce[1|2]:SUM:STATe ............................................................... 167
8-13-3. SOURce[1|2]:SUM:SOURce ............................................................ 168
8-13-4. SOURce[1|2]:SUM:INTernal:FUNction ............................................ 168
8-13-5.SOURce[1|2]:SUM:INTernal:FREQuency ......................................... 169
8-13-6. SOURce[1|2]:SUM:AMPL ................................................................ 169
8-14-1. Sweep Overview .............................................................................. 171
8-14-2. SOURce[1|2]:SWEep:STATe .......................................................... 172
8-14-3. SOURce[1|2]:FREQuency:STARt .................................................... 172
8-14-4. SOURce[1|2]:FREQuency:STOP .................................................... 173
8-14-5. SOURce[1|2]:FREQuency:CENTer ................................................. 173
8-14-6. SOURce[1|2]:FREQuency:SPAN .................................................... 174
8-14-7. SOURce[1|2]:SWEep:SPACing ....................................................... 175
8-14-8. SOURce[1|2]:SWEep:TIME ............................................................. 175
8-14-9. SOURce[1|2]:SWEep:SOURce ....................................................... 176
8-14-10. SOURce[1|2]:MARKer:FREQuency ............................................... 177
8-14-11. SOURce[1|2]:MARKer ................................................................... 177
8-15-1. Burst Mode Overview ...................................................................... 178
8-15-2. SOURce[1|2]:BURSt:STATe ............................................................ 179
8-15-3. SOURce[1|2]:BURSt:MODE ............................................................ 180
8-15-4. SOURce[1|2]:BURSt:NCYCles ........................................................ 180
8-15-5. SOURce[1|2]:BURSt:INTernal:PERiod ............................................ 181
8-15-6. SOURce[1|2]:BURSt:PHASe ........................................................... 182
8-15-7. SOURce[1|2]:BURSt:TRIGger:SOURce .......................................... 183
8-15-8. SOURce[1|2]:BURSt:TRIGger:DELay ............................................. 184
8-15-9. SOURce[1|2]:BURSt:TRIGger:SLOPe............................................. 184
8-15-10. SOURce[1|2]:BURSt:GATE:POLarity ............................................ 185
8-15-11. SOURce[1|2]:BURSt:OUTPut:TRIGger:SLOPe ............................. 185
8-15-12. OUTPut[1|2]:TRIGger .................................................................... 186
8-15-13. SOURce[1|2]:BURSt:TRIGger:MANual ......................................... 187
8-16-1. Arbitrary Waveform Overview .......................................................... 187
8-16-2. SOURce[1|2]:FUNCtion USER ........................................................ 188
8-16-3. SOURce[1|2]:DATA:DAC ................................................................. 188
8-16-4. SOURce[1|2]:ARB:EDIT:COPY ....................................................... 189
8-16-5. SOURce[1|2]:ARB:EDIT:DELete ..................................................... 189
8-16-4. SOURce[1|2]:ARB:EDIT:DELete:ALL .............................................. 190
131
8-16-7. SOURce[1|2]:ARB:EDIT:POINt ....................................................... 190
8-16-8. SOURce[1|2]:ARB:EDIT:LINE ......................................................... 190
8-16-9. SOURce[1|2]:ARB:EDIT:PROTect .................................................. 191
8-16-10. SOURce[1|2]:ARB:EDIT:PROTect:ALL ......................................... 191
8-16-11. SOURce[1|2]:ARB:EDIT:UNProtect ............................................... 191
8-16-12. SOURce[1|2]:ARB:OUTPut ........................................................... 191
8-17-1. COUNTER:STATE .......................................................................... 192
8-17-2. COUNter:GATe ................................................................................ 192
8-17-3. COUNter:VALue? ............................................................................ 193
8-18-1. SOURce[1|2]:PHASe ....................................................................... 193
8-18-2. SOURce[1|2]:PHASe:SYNChronize ................................................ 194
8-19-1.SOURce[1|2]:FREQuency:COUPle:MODE ...................................... 194
8-19-2. SOURce[1|2]:FREQuency:COUPle:OFFSet .................................... 194
8-19-3. SOURce[1|2]:FREQuency:COUPle:RATio ...................................... 195
8-19-4. SOURce[1|2]:AMPlitude:COUPle:STATe ........................................ 195
8-19-5. SOURce[1|2]:TRACk ....................................................................... 196
8-20-1. *SAV ................................................................................................ 197
8-20-2. *RCL ................................................................................................ 197
8-20-3. MEMory:STATe:DELete .................................................................. 197
8-20-4. MEMory:STATe:DELete ALL ........................................................... 197
132
8-3. System Commands
8-3-1. SYSTem:ERRor?
Description
Query Syntax
Return parameter <string1><CR+LF> Returns an error code and strings.
<string2>
Example
Query
Reads an error from the error queue. See page 209 for details
regarding the error queue.
SYSTem:ERRor?
SYSTem:ERRor?
-138 <CR+LF>Suffix not allowed
Returns an error code and string.
Include CR, LF code.
8-3-2. *IDN?
Description
Query
Returns the function generator manufacturer, model number, serial number and firmware version number in the following format:
Query Syntax
TEXIO,FGX-2220,SN:XXXXXXXX,Vm.mm
*IDN?
Return parameter <string>
Example *IDN?
TEXIO,FGX-2220,SN:XXXXXXXX,Vm.mm
Returns the identification of the function generator.
8-3-3. *RST
Description
Note
Syntax
Set
Reset the function generator to its factory default state.
Note the *RST command will not delete instrument save states in memory.
*RST
133
8-3-4. SYSTem:VERSion?
Description
Query Syntax
Query
Performs a system version query. Returns a string with the instrument, firmware version, FPGA revision
SYSTem:VERSion?
Return parameter <string1><CR+LF><CR+LF> Model & Firmware Version
<string2><CR+LF><CR+LF> FPGA Version
<string3><CR+LF><CR+LF> Serial Number
<string4> Mode
Example SYST:VERS?
>FGX-2220 Version-x.xx_xxxx
>
>FPGA:xxxxxxxx
>
>SN: xxxxxxxx
>
>MODE:Plant Pattern
>
Returns the versions ,SN , MODE.
8-3-5. *OPC
Description
Note
Syntax
Set
This command sets the Operation Complete Bit (bit 0) of the
Standard Event Status Register after the function generator has completed all pending operations. For the FGX-2220, the
*OPC command is used to indicate when a sweep or burst has completed.
Before the OPC bit is set, other commands may be executed.
*OPC
134
8-3-6. *OPC?
Description
Note
Query
Returns the OPC bit to the output buffer when all pending operations have completed. I.e. when the OPC bit is set.
Commands cannot be executed until the *OPC? query has completed.
Query Syntax *OPC?
Return parameter 1
Example *OPC?
1
Returns a “1” when all pending operations are complete.
8-4. Status Register Commands
8-4-1. *CLS
Description
Set
The *CLS command clears all the event registers, the error queue and cancels an *OPC command.
*CLS Syntax
8-4-2. *ESE
Description
Note
Set
The Standard Event Status Enable command determines which events in the Standard Event Status Event register can set the Event Summary Bit (ESB) of the Status Byte register.
Any bit positions set to 1 enable the corresponding event. Any enabled events set bit 5 (ESB) of the Status Byte register.
The *CLS command clears the event register, but not the enable register.
*ESE <enable value>
<enable value> 0~255
Syntax
Parameter
Example
Query Syntax
*ESE 20
Sets a bit weight of 20 (bits 2 and 4).
*ESE?
135
Return Parameter Bit
0
1
2
3
Example *ESE?
4
Register
Not used
Not used
Error Queue
Bit
4
5
6
Questionable Data 7
Bit 2 is set.
8-4-3. *ESR?
Register
Message Available
Standard Event
Master Summary
Not used
Description
Query
Reads and clears the Standard Event Status Register. The bit weight of the standard event status register is returned.
Note
Query Syntax
The *CLS will also clear the standard event status register.
*ESR?
Return Parameter Bit
0
1
2
3
Register
Operation
Complete
Not Used
Query Error
Device Error
Bit
4
5
6
7
Register
Execution Error
Command Error
Not Used
Power On
Query Example *ESR?
5
Returns the bit weight of the standard event status register
(bit 0 and 2).
8-4-4. *STB?
Description
Note
Syntax
Reads the Status byte condition register.
Bit 6, the master summary bit, is not cleared.
*STB?
Query
136
8-4-5. *SRE
Description
Note
Set
The Service Request Enable Command determines which events in the Status Byte Register are allowed to set the MSS
(Master summary bit). Any bit that is set to “1” can cause the
MSS bit to be set.
The *CLS command clears the status byte event register, but not the enable register.
*SRE <enable value>
<enable value> 0~255
Syntax
Parameter
Example
Query Syntax
*SRE 12
Sets a bit weight of 12 (bits 2 and 3) for the service request enable register.
*SRE?
Return Parameter Bit
0
1
2
3
Query Example *SRE?
12
Register
Not used
Not used
Error Queue
Bit
4
5
6
Questionable Data 7
Register
Message Available
Standard Event
Master Summary
Not used
Returns the bit weight of the status byte enable register.
8-5. System Remote Commands
8-5-1. SYSTem:LOCal
Description
Syntax
Example
Set
Sets the function generator to local mode. In local mode, all front panel keys are operational.
SYSTem:LOCal
SYST:LOC
137
8-5-2. SYSTem:REMote
Description
Syntax
Example
Set
Disables the front panel keys and puts the function generator into remote mode
SYSTem:REMote
SYST:REM
8-6. Apply Commands
The APPLy command has 5 different types of outputs (Sine, Square, Ramp,
Pulse, Noise, ). The command is the quickest, easiest way to output waveforms remotely. Frequency, amplitude and offset can be specified for each function.
As only basic parameters can be set with the Apply command, other parameters use the instrument default values.
The Apply command will set the trigger source to immediate and disable burst, modulation and sweep modes. Turns on the output commandOUTPut[1|2] ON.
The termination setting will not be changed.
As the frequency, amplitude and offset parameters are in nested square brackets, amplitude can only be specified if the frequency has been specified and offset can only be specified if amplitude has been set. For the example:
SOURce[1|2]:APPLy:SINusoid [<frequency> [,<amplitude> [,<offset>] ]]
Output Frequency For the output frequency, MINimum, MAXimum and DEFault can be used. The default frequency for all functions is set to 1 kHz. The maximum and minimum frequency depends on the function used. If a frequency output that is out of range is specified, the max/min frequency will be used instead. A
“Data out range error will be generated” from the remote terminal.
138
Output Amplitude
When setting the amplitude, MINimum, MAXimum and
DEFault can be used. The range depends on the function b eing used and the output termination (50Ω or high impedance). The default amplitude for all functions is 100 mVpp (50Ω).
If the amplitude has been set and the output termination is changed from 50Ω to high impedance, the amplitude will double. Changing the output termination from high impedance to 50Ω will half the amplitude.
Vrms, dBm or Vpp units can be used to specify the output unit to use with the current command. The VOLT:UNIT command can be used to set the units when no unit is specified with the
Apply command. If the output termination is set to high impedance, dBm units cannot be used. The units will default to Vpp.
The output amplitude can be affected by the function and unit chosen. Vpp and Vrms or dBm values may have different maximum values due to differences such as crest factor. For example, a 5Vrms square wave must be adjusted to 3.536
Vrms for a sine wave.
DC Offset voltage The offset parameter can be set to MINimum, MAXimum or
DEFault. The default offset is 0 volts. The offset is limited by the output amplitude as shown below.
|Voffset| < Vmax – Vpp/2
If the output specified is out of range, the maximum offset will be set.
The offset is also determined by the output termination (50Ω or high impedance). If the offset has been set and the output termination has changed from 50Ω to high impedance, the offset will double. Changing the output termination from high impedance to 50Ω will half the offset.
8-6-1. SOURce[1|2]:APPLy:SINusoid
Description
Syntax
Set
Outputs a sine wave from the selected channel when the command has executed. Frequency, amplitude and offset can also be set.
SOURce[1|2]:APPLy:SINusoid [<frequency> [,<amplitude>
[,<offset>] ]]
139
Parameter <frequency>
1μHz~25MHz
<amplitude> 1mVpp~10Vpp
(50Ω) (3.536 Vrms)
<offset> -4.99V
~4.99V (50Ω)
SOUR1:APPL:SIN 2KHZ,MAX,MAX Example
Sets frequency to 2kHz and sets the amplitude and offset to the maximum.
8-6-2. SOURce[1|2]:APPLy:SQUare
Description
Syntax
Parameter
Set
Outputs a square wave from the selected channel when the command has executed. Frequency, amplitude and offset can also be set. The duty cycle is set to 50%.
SOURce[1|2]:APPLy:SQUare [<frequency> [,<amplitude>
[,<offset>] ]]
<frequency>
1μHz~25MHz
<amplitude>
<offset>
1mVpp~10Vpp
(50Ω)
-4.99V
~4.99V (50Ω)
SOUR1:APPL:SQU 2KHZ,MAX,MAX Example
Sets frequency to 2kHz and sets the amplitude and offset to the maximum.
8-6-3. SOURce[1|2]:APPLy:RAMP
Description
Set
Outputs a ramp wave from the selected channel when the command has executed. Frequency, amplitude and offset can also be set. The symmetry is set to 50%.
Syntax
Parameter
Example
SOURce[1|2]:APPLy:RAMP [<frequency> [,<amplitude>
[,<offset>] ]]
<frequency> 1μHz~1MHz
<amplitude> 1mVpp~10Vpp (50Ω)
<offset> -4.99V
~4.99V (50Ω)
SOUR1:APPL:RAMP 2KHZ,MAX,MAX
Sets frequency to 2kHz and sets the amplitude and offset to the maximum.
140
8-6-4. SOURce[1|2]:APPLy:PULSe
Description
Set
Outputs a pulse waveform from the selected channel when the command has executed. Frequency, amplitude and offset can also be set.
Note
Syntax
Parameter
The PW settings from the SOURce[1|2]:PULS: WIDT command are preserved. Edge and pulse width may be adjusted to supported levels.
Repetition rates will be approximated from the frequency. For accurate repetition rates, the period should be adjusted using the SOURce[1|2]:PULS:PER command
SOUR[1|2]:APPLy:PULSe [<frequency> [,<amplitude>
[,<offset>] ]]
<frequency> 500μHz~25MHz
<amplitude> 1mVpp~10Vpp
(50Ω)
<offset> -4.99V
~4.99V (50Ω)
SOUR1:APPL:PULS 1KHZ,MIN,MAX Example
Sets frequency to 1kHz and sets the amplitude to minimum and the and offset to the maximum.
8-6-5. SOURce[1|2]:APPLy:NOISe
Description
Note
Syntax
Parameter
Example
Set
Outputs Gaussian noise. Amplitude and offset can also be set.
Frequency cannot be used with the noise function; however a value (or DEFault) must be specified. The frequency is remembered for the next function used.
SOURce[1|2]:APPLy:NOISe [<frequency|DEFault>
[,<amplitude> [,<offset>] ]]
<frequency> Not applicable
<amplitude> 1mVpp~10Vpp (50
Ω)
<offset> -4.99V
~4.99V (50Ω)
SOUR1:APPL:NOIS DEF, 3.0, 1.0
Sets the amplitude to 3 volts with an offset of 1 volt.
141
8-6-6. SOURce[1|2]:APPLy:USER
Description
Note
Set
Outputs an arbitrary waveform from the selected channel. The output is that specified from the FUNC:USER command.
Frequency and amplitude cannot be used with the DC function; however a value (or DEFault) must be specified. The values are remembered for the next function used.
Syntax
Parameter
Example
SOURce[1|2]:APPLy:USER [<frequency> [,<amplitude>
[,<offset>] ]]
<frequency> 1 μHz~60MHz
<amplitude> 1mVpp~10Vpp
(50Ω)
<offset> -4.99V~4.99
V (50Ω)
SOUR1:APPL:USER
8-6-7. SOURce[1|2]:APPLy?
Description
Note
Syntax
Query
Outputs a string with the current settings.
The string can be passed back appended to the Apply
Command.
SOURce[1|2]:APPLy?
Return Parameter <string>
Example SOUR1:APPL?
Function, frequency, amplitude, offset
SIN +5.0000000000000E+03,+3.0000E+00,-2.50E+00
Returns a string with the current function and parameters,
Sine, 5kHz, 3 Vpp, -2.5V offset.
8-7. Output Commands
Unlike the Apply commands, the Output commands are low level commands to program the function generator.
This section describes the low-level commands used to program the function generator. Although the APPLy command provides the most straightforward method to program the function generator, the low-level commands give you more flexibility to change individual parameters.
142
8-7-1. SOURce[1|2]:FUNCtion
Set
Query
Description The FUNCtion command selects and outputs the selected output.
The User parameter outputs an arbitrary waveform previously set by the SOURce[1|2]:FUNC:USER command.
Note If the function mode is changed and the current frequency setting is not supported by the new mode, the frequency setting will be altered to next highest value.
Vpp and Vrms or dBm amplitude values may have different maximum values due to differences such as crest factor. For example, if a 5Vrms square wave is changed to a sinewave, then the Vrms is automatically adjusted to 3.536.
The modulation, burst and sweep modes can only be used with some of the basic waveforms. If a mode is not supported, the conflicting mode will be disabled. See the table below.
Sine Square Ramp Pulse Noise ARB
AM
FM
PM
FSK
SUM
SWEEP
BURST
Syntax
Example
SOURce[1|2]:FUNCtion {SINusoid|SQUare|RAMP|
PULSe|NOISe| USER}
SOUR1:FUNC SIN
Sets the output as a sine function.
Query Syntax SOURce[1|2]:FUNCtion?
Return
Parameter
SIN, SQU, RAMP, PULS,
NOIS, USER
Returns the current output type.
Example SOUR1:FUNC?
SIN
Current output is sine.
143
8-7-2. SOURce[1|2]:FREQuency
Description
Note
Set
Query
The SOURce[1|2]:FREQuency command sets the output freuquency for the selected channel. The query command returns the current frequency setting.
The maximum and minimum frequency depends on the function mode.
Sine, Square
Ramp
Pulse
1μHz~25MHz
1μHz~1MHz
500
μHz~25MHz
Noise
User
Not applicable
1μHz~60MHz
If the function mode is changed and the current frequency setting is not supported by the new mode, the frequency setting will be altered to next highest value.
The duty cycle of square waveforms depends on the frequency settings.
1.0% to 99.0%(
frequency≤100 KHz)
10% to 90% (100 K
Hz ≤ frequency ≤1MHz)
50% (frequency
≤ 25 MHz)
If the frequency is changed and the set duty cycle cannot support the new frequency, the highest duty cycle available at that frequency will be used. A “settings conflict” error will result from the above scenario.
Syntax SOURce[1|2]:FREQuency
{<frequency>|MINimum|MAXimum}
SOUR1:FREQ MAX Example
Query Syntax
Sets the frequency to the maximum for the current mode.
SOURce[1|2]:FREQuency?
Return Parameter <NR3>
Example
Returns the frequency for the current mode.
SOUR1:FREQ? MAX
+1.0000000000000E+06
The maximum frequency that can be set for the current function is 1MHz.
144
8-7-3. SOURce[1|2]:AMPlitude
Description
Note
Set
Query
The SOURce[1|2]:AMPLitude command sets the output amplitude for the selected channel. The query command returns the current amplitude settings.
The maximum and minimum amplitude depends on the output termination. The default amplitude for all functions is 100 mVpp (50Ω). If the amplitude has been set and the output termination is changed from 50Ω to high impedance, the amplitude will double. Changing the output termination from high impedance to 50Ω will half the amplitude.
The offset and amplitude are related by the following equation.
|Voffset| < Vmax
– Vpp/2
Syntax
Example
If the output termination is set to high impedance, dBm units cannot be used. The units will default to Vpp.
The output amplitude can be affected by the function and unit chosen. Vpp and Vrms or dBm values may have different maximum values due to differences such as crest factor. For example, a 5Vrms square wave must be adjusted to 3.536
Vrms for a sine wave.
The amplitude units can be explicitly used each time the
SOURce[1|2]:AMPlitude command is used. Alternatively, the
VOLT:UNIT command can be used to set the amplitude units for all commands.
SOURce[1|2]:AMPlitude {< amplitude>
|MINimum|MAXimum}
SOUR1:AMP MAX
Sets the amplitude to the maximum for the current mode.
Query Syntax SOURce[1|2]:AMPlitude? {MINimum|MAXimum}
Return
Parameter
<NR3> Returns the amplitude for the current mode.
Example SOUR1:AMP? MAX
+5.0000E+00
The maximum amplitude that can be set for the current function is 5 volts.
145
8-7-4. SOURce[1|2]:DCOffset
Description
Note
Set
Query
Sets or queries the DC offset for the current mode.
The offset parameter can be set to MINimum, MAXimum or
DEFault. The default offset is 0 volts. The offset is limited by the output amplitude as shown below.
|Voffset| < Vmax
– Vpp/2
Syntax
Example
If the output specified is out of range, the maximum offset will be set.
The offset is also determined by the output termination (
50Ω or high impedance). If the offset has been set and the output termination has changed from 50Ω to high impedance, the offset will double. Changing the output termination from high impedance to 50Ω will half the offset.
SOURce[1|2]:DCOffset {< offset> |MINimum|MAXimum}
SOUR1:DCO MAX
Sets the offset to the maximum for the current mode.
Query Syntax SOURce[1|2]:DCOffset? {MINimum|MAXimum}
Return
Parameter
<NR3> Returns the offset for the current mode.
Example SOUR1:DCO?
+3.0000E+00
The offset for the current mode is set to +3 volts.
146
8-7-5. SOURce[1|2]:SQUare:DCYCle
Description
Note
Set
Query
Sets or queries the duty cycle for square waves only. The setting is remembered if the function mode is changed. The default duty cycle is 50%.
The duty cycle of square waveforms depend on the frequency settings.
1.0% to 99.0%( frequency≤100 KHz)
10% to 90% (100 K Hz ≤ frequency ≤1MHz)
50% (frequency ≤ 25 MHz)
If the frequency is changed and the set duty cycle cannot support the new frequency, the highest duty cycle available at that frequency will be used. A “settings conflict” error will result from the above scenario.
Syntax
Example
For square waveforms, the Apply command and AM/FM modulation modes ignore the duty cycle settings.
SOURce[1|2]:SQUare:DCYCle {< percent>
|MINimum|MAXimum}
SOUR1:SQU:DCYC MAX
Sets the duty cycle to the highest possible for the current frequency.
Query Syntax SOURce[1|2]:SQUare:DCYCle? {MINimum|MAXimum}
Return
Parameter
<NR3> Returns the duty cycle as a percentage.
Example SOUR1:SQU:DCYC?
+5.00E+01
The duty cycle is set 50%.
8-7-6. SOURce[1|2]:RAMP:SYMMetry
Description
Set
Query
Sets or queries the symmetry for ramp waves only. The setting is remembered if the function mode is changed. The default symmetry is 50%.
147
Note
Syntax
For ramp waveforms, the Apply command and AM/FM modulation modes ignore the current symmetry settings.
SOURce[1|2]:RAMP:SYMMetry {< percent>
|MINimum|MAXimum}
Example SOUR1:RAMP:SYMM MAX
Sets the symmetry to the 100%.
Query Syntax SOURce[1|2]:RAMP:SYMMetry? {MINimum|MAXimum}
Return
Parameter
Example
<NR3> Returns the symmetry as a percentage.
SOUR1:RAMP:SYMMetry?
+1.0000E+02
The symmetry is set as 100%.
8-7-7. OUTPut[1|2]
Description
Note
Set
Query
Enables/Disables or queries the front panel output from the selected channel. The default is set to off.
If the output is overloaded by an external voltage, the output will turn off and an error message will be displayed. The overload must first be removed before the output can be turned on again with output command.
Using the Apply command automatically sets the front panel output to on.
OUTPut[1|2] {OFF|ON}
OUTP1 ON
Turns the channel 1 output on.
Syntax
Example
Query Syntax OUTPut[1|2]?
Return
Parameter
Example
1
0
OUTP1?
1
ON
OFF
The channel 1 output is currently on.
148
8-7-8. OUTPut[1|2]:LOAD
Return
Parameter
Example
DEF Default
INF
OUTP1:LOAD?
INFinity
DEF
The output termination for channel 1 is set to 50Ω.
8-7-9. SOURce[1|2]:VOLTage:UNIT
Description
Note
Set
Query
Sets or queries the output termination. Two impedance settings can be chosen, D
EFault (50Ω) and INFinity (high impedance >10 kΩ).
The output termination is to be used as a reference only. If the output termination is set
50Ω but the actual load impedance is not 50Ω, then the amplitude and offset will not be correct.
If the amplitude has been set and the output termination is changed from 50Ω to high impedance, the amplitude will double. Changing the output termination from high impedance to 50Ω will half the amplitude.
If the output termination is set to high impedance, dBm units cannot be used. The units will default to Vpp.
OUTPut[1|2]:LOAD {DEFault|INFinity} Syntax
Example OUTP1:LOAD DEF
Sets the channel 1 output termination to
50Ω.
Query Syntax OUTPut[1|2]:LOAD?
Description
Note
Set
Query
Sets or queries the output amplitude units. There are three types of units: VPP, VRMS and DBM.
The units set with the VOLTage:UNIT command will be used as the default unit for all amplitude units unless a different unit is specifically used for a command.
If the output termination is set to high impedance, dBm units cannot be used. The Units will automatically default to Vpp.
149
Syntax SOURce[1|2]:VOLTage:UNIT {VPP|VRMS|DBM}
Example SOUR1:VOLT:UNIT VPP
Sets the amplitude units to Vpp.
Query Syntax SOURce[1|2]:VOLTage:UNIT?
Return
Parameter
VPP
VRMS
DBM
Vpp
Vrms dBm
Example SOUR1:VOLT:UNIT?
VPP
The amplitude units are set to Vpp.
8-8. Pulse Configuration Commands
The pulse chapter is used to control and output pulse waveforms. Unlike the
APPLy command, low level control is possible including setting the rise time, fall time, period and pulse width.
Period
90%
90%
Pulse Width 50% 50%
10% 10%
Rise time Fall time
8-8-1. SOURce[1|2]:PULSe:PERiod
Description
Note
Set
Query
Sets or queries the pulse period. The default period is 1 ms.
The pulse period must be greater than the pulse width and edge time(1.6x) combined.
Pulse Width + (1.6 * Edge Time) < Period
If the edge time or pulse width are too great, they will automatically be reduced to fit the period by the function generator.
The PULSe:PERiod function will change the period for all
150
Syntax functions, not just for the pulse waveforms. If a different function is chosen and the current period is out of range, the period will be automatically adjusted to suit the new function.
SOURce[1|2]:PULSe:PERiod
{<seconds>|MINimum|MAXimum}
Example SOUR1:PULS:PER MIN
Sets the period to the minimum time allowed.
Query Syntax SOURce[1|2]:PULSe:PERiod? [MINimum|MAXimum]
Return
Parameter
Example
<seconds> 40ns~2000s
SOUR1:PULS:PER?
+1.0000E+01
The period is set to 10 seconds.
8-8-2. SOURce[1|2]:PULSe:WIDTh
Description
Set
Query
Sets or queries the pulse width. The default pulse width is
100us.
The minimum pulse width is affected by the period time. If the period is over 20 or 200 seconds, then the minimum pulse width is 1us and 10us, respectively.
Pulse width is defined as the time from the rising to falling edges (at a threshold of 50%).
Note
Syntax
The pulse width cannot be less than the edge time times 1.6.
Pulse Width > 1.6 * Edge Time
The pulse width must be less than the period minus the edge time (x1.6).
Pulse Width < Period
– (1.6 *Edge Time)
SOURce[1|2]:PULSe:WIDTh
{<seconds>|MINimum|MAXimum}
Example SOUR1:PULS:WIDT MAX
Sets the pulse width to the maximum allowed.
Query Syntax SOURce[1|2]:PULSe:WIDTh? [MINimum|MAXimum]
Return
Parameter
<seconds> 20 ns ~ 1999.9 seconds
151
Example SOUR1:PULS:WIDT? MIN
+8.0000E-09
The pulse width is set to 8 nanoseconds.
8-9. Amplitude Modulation (AM) Commands
8-9-1. AM Overview
To successfully create an AM waveform, the following commands must be executed in order.
Enable AM
Modulation
1. Turn on AM modulation using the SOURce[1|2]:
AM:STAT ON command
Configure Carrier 2. Use the APPLy command to select a carrier waveform.
Alternatively the equivalent FUNC, FREQ, AMPl, and
DCOffs commands can be used to create a carrier waveform with a designated frequency, amplitude and offset.
Select Modulation
Source
3. Select an internal or external modulation source using the SOURce[1|2]:AM:SOUR command.
Select Shape
Set Modulating
Frequency
4. Use the SOURce[1|2]:AM:INT:FUNC command to select
5. a sine, square, upramp, dnramp or triangle modulating waveshape. For internal sources only.
Set the modulating frequency using the SOURce[1|2]:
AM:INT:FREQ command. For internal sources only.
Set Modulation
Depth
6. Set the modulation depth using the SOURce[1|2]:
AM:DEPT command.
152
8-9-2. SOURce[1|2]:AM:STATe
Description
Note
Syntax
Example
Query Syntax
Return Parameter 0
Set
Query
Sets or disables AM modulation. By default AM modulation is disabled. AM modulation must be enabled before setting other parameters.
Burst or sweep mode will be disabled if AM modulation is enabled. As only one modulation is allowed at any one time, other modulation modes will be disabled when AM modulation is enabled.
SOURce[1|2]:AM:STATe {OFF|ON}
SOUR1:AM:STAT ON
Enables AM modulation.
SOURce[1|2]:AM:STATe?
Disabled (OFF)
Example
1 Enabled (ON)
SOUR1:AM:STAT?
1
AM modulation mode is currently enabled.
8-9-3. SOURce[1|2]:AM:SOURce
Description
Set
Query
Sets or queries the modulation source as internal or external.
Internal is the default modulation source.
Note If an external modulation source is selected, modulation depth is limited to ± 5V from the MOD INPUT terminal on the rear panel. For example, if modulation depth is set to 100%, then the maximum amplitude is +5V, and the minimum amplitude is -5V.
SOURce[1|2]:AM:SOURce {INTernal|EXTernal} Syntax
Example SOUR1:AM:SOUR EXT
Sets the modulation source to external.
Query Syntax SOURce[1|2]:AM:SOURce?
Return Parameter INT Internal
EXT External
153
Example SOUR1:AM:SOUR?
INT
The modulation source is set to internal.
8-9-4. SOURce[1|2]:AM:INTernal:FUNCtion
Description
Set
Query
Sets the shape of the modulating waveform from sine, square, triangle, upramp and dnramp. The default shape is sine.
Note
Syntax
Square and triangle waveforms have a 50% duty cycle.
Upramp and dnramp have a symmetry of 100% and 0%, respectively.
SOURce[1|2]:AM:INTernal:FUNCtion
{SINusoid|SQUare|TRIangle|UPRamp|DNRamp}
SOUR1:AM:INT:FUNC SIN Example
Query Syntax
Sets the AM modulating wave shape to sine.
SOURce[1|2]:AM:INTernal:FUNCtion?
Return Parameter SIN
Example
SQU
TRI
SIN
Sine
Square
Triangle
SOUR1:AM:INT:FUNC?
UPRAMP Upramp
DNRAMP Dnramp
The shape for the modulating waveform is Sine.
8-9-5. SOURce[1|2]:AM:INTernal:FREQuency
Description
Syntax
Set
Query
Sets the frequency of the internal modulating waveform only.
The default frequency is 100Hz.
SOURce[1|2]:AM:INTernal:FREQuency
{<frequency>|MINimum|MAXimum}
Parameter
Example
<frequency> 2 mHz~ 20 kHz
SOUR1:AM:INT:FREQ +1.0000E+02
Sets the modulating frequency to 100Hz.
154
Query Syntax SOURce[1|2]:AM:INTernal:FREQuency?
[MINimum|MAXimum]
Return Parameter <NR3> Returns the frequency in Hz.
Example SOUR1:AM:INT:FREQ? MIN
+1.0000E+02
Returns the minimum frequency allowed.
8-9-6. SOURce[1|2]:AM:DEPTh
Description
Note
Syntax
Set
Query
Sets or queries the modulation depth for internal sources only. The default is 100%.
The function generator will not output more than ±5V, regardless of the modulation depth.
The modulation depth of an external source is controlled using the ±5V MOD INPUT terminal on the rear panel, and not the SOURce[1|2]:AM:DEPTh command.
SOURce[1|2]:AM:DEPTh {<depth in percent>
|MINimum|MAXimum}
<depth in percent> 0~120% Parameter
Example
Query Syntax
SOUR1:AM:DEPT 50
Sets the modulation depth to 50%.
SOURce[1|2]:AM:DEPTh? [MINimum|MAXimum]
Return Parameter <NR3> Return the modulation depth as a percentage.
Example SOUR1:AM:DEPT?
+1.0000E+02
The modulation depth is 100%.
155
8-10. Frequency Modulation (FM) Commands
8-10-1. FM Overview
The following is an overview of the steps required to generate an FM waveform.
Enable FM
Modulation
Configure Carrier
1. Turn on FM modulation using the SOURce[1|2]: FM:STAT
ON command.
2. Use the APPLy command to select a carrier waveform.
Alternatively, the FUNC, FREQ, AMPl, and DCOffs
Select Modulation
Source
3. Select an internal or external modulation source using the
SOURce[1|2]:FM:SOUR command.
Select shape commands can be used to create a carrier waveform with a designated frequency, amplitude and offset.
4. Use the SOURce[1|2]:FM:INT:FUNC command to select a sine, square, upramp, dnramp or triangle modulating waveshape. For internal sources only.
Set Modulating
Frequency
5. Set the modulating frequency using the SOURce[1|2]:
FM:INT:FREQ command. For internal sources only.
Set Peak
Frequency
Deviation
6. Use the SOURce[1|2]:FM:DEV command to set the frequency deviation.
8-10-2. SOURce[1|2]:FM:STATe
Description
Note
Syntax
Set
Query
Sets or disables FM modulation. By default FM modulation is disabled. FM modulation must be enabled before setting other parameters.
Burst or sweep mode will be disabled if FM modulation is enabled. As only one modulation is allowed at any one time, other modulation modes will be disabled when FM modulation is enabled.
SOUR[1|2]:FM:STATe {OFF|ON}
SOUR1:FM:STAT ON Example
Enables FM modulation.
156
Query Syntax SOURce[1|2]:FM:STATe?
Return Parameter 0 Disabled (OFF)
Example
1 Enabled (ON)
SOUR1:FM:STAT?
1
FM modulation mode is currently enabled.
8-10-3. SOURce[1|2]:FM:SOURce
Description
Note
Set
Query
Sets or queries the modulation source as internal or external.
Internal is the default modulation source.
If an external modulation source is selected, modulation depth is limited to ± 5V from the MOD INPUT terminal on the rear panel. For example, if modulation depth is set to 100%, then the maximum amplitude is +5V, and the minimum amplitude is -5V.
SOURce[1|2]:FM:SOURce {INTernal|EXTernal} Syntax
Example
Query Syntax
SOUR1:FM:SOUR EXT
Sets the modulation source to external.
SOURce[1|2]:FM:SOURce?
Return Parameter INT
EXT
Internal
External
Example SOUR1:FM:SOUR?
INT
The modulation source is set to internal.
8-10-4. SOURce[1|2]:FM:INTernal:FUNCtion
Description
Set
Query
Sets the shape of the modulating waveform from sine, square, triangle, upramp and dnramp. The default shape is sine.
157
Note
Syntax
Square and triangle waveforms have a 50% duty cycle.
Upramp and dnramp have a symmetry of 100% and 0%, respectively.
SOURce[1|2]:FM:INTernal:FUNCtion
{SINusoid|SQUare|TRIangle|UPRamp|DNRamp}
Example
Query Syntax
SOUR1:FM:INT:FUNC SIN
Sets the FM modulating wave shape to sine.
SOURce[1|2]:FM:INTernal:FUNCtion?
Return Parameter SIN
SQU
TRI
Sine
Square
Triangle
UPRAMP
DNRAMP
Upramp
Dnramp
Example SOUR1:FM:INT:FUNC?
SIN
The shape for the modulating waveform is Sine.
8-10-5. SOURce[1|2]:FM:INTernal:FREQuency
Description
Syntax
Set
Query
Sets the frequency of the internal modulating waveform only.
The default frequency is 10Hz.
SOURce[1|2]:FM:INTernal:FREQuency
{<frequency>|MINimum|MAXimum}
Parameter
Example
Query Syntax
<frequency> 2 mHz~ 20 kHz
SOUR1:FM:INT:FREQ 100
Sets the modulating frequency to 100Hz.
SOURce[1|2]:FM:INTernal:FREQuency?
[MINimum|MAXimum]
Return Parameter <NR3>
Example
Returns the frequency in Hz.
SOUR1:FM:INT:FREQ? MAX
+2.0000E+04
Returns the maximum frequency allowed.
158
8-10-6. SOURce[1|2]:FM:DEViation
Description
Note
Syntax
Parameter
Set
Query
Sets or queries the peak frequency deviation of the modulating waveform from the carrier waveform. The default peak deviation is 100Hz.
The frequency deviation of external sources is controlled using the ±5V MOD INPUT terminal on the rear panel. A positive signal (>0~+5V) will increase the deviation (up to the set frequency deviation), whilst a negative voltage will reduce the deviation.
The relationship of peak deviation to modulating frequency and carrier frequency is shown below.
Peak deviation = modulating frequency – carrier frequency.
The carrier frequency must be greater than or equal to the peak deviation frequency. The sum of the deviation and carrier frequency must not exceed the maximum frequency for a specific carrier shape. If an out of range deviation is set for any of the above conditions, the deviation will be automatically adjusted to the maximum value allowed and an
“out of range” error will be generated.
For square wave carrier waveforms, the deviation may cause the duty cycle frequency boundary to be exceeded. In these conditions the duty cycle will be adjusted to the maximum allowed and a “settings conflict” error will be generated.
SOURce[1|2]:FM:DEViation {<peak deviation in
Hz>|MINimum|MAXimum}
<peak deviation in Hz> DC~25MHz
Example
Query Syntax
DC~15MHz(square)
DC~1MHz (Ramp)
SOUR1:FM:DEV MAX
Sets the frequency deviation to the maximum value allowed.
SOURce[1|2]:FM:DEViation? [MINimum|MAXimum]
Return Parameter <NR3>
Example
Returns the frequency deviation in
Hz.
SOURce[1|2]:FM:DEViation? MAX
+1.0000E+01
Returns the maximum frequency deviation allowed.
159
8-11. Frequency-Shift Keying (FSK) Commands
8-11-1. FSK Overview
The following is an overview of the steps required to generate an FSK modulated waveform.
Enable FSK
Modulation
Configure Carrier
Select FSK
Source
Select FSK HOP
Frequency
1. Turn on FSK modulation using the SOURce[1|2]:
FSK:STAT ON command.
2. Use the APPLy command to select a carrier waveform.
Alternatively, the FUNC, FREQ, AMPl, and DCOffs commands can be used to create a carrier waveform with a designated frequency, amplitude and offset.
3. Select an internal or external modulation source using the
SOURce[1|2]:FSK:SOUR command.
4. Set the hop frequency using the SOURce[1|2]:FSK:FREQ command.
Set FSK Rate 5. Use the SOURce[1|2]: FSK:INT:RATE command to set the FSK rate. The FSK rate can only be set for internal sources.
8-11-2. SOURce[1|2]:FSKey:STATe
Description
Note
Set
Query
Turns FSK Modulation on or off. By default FSK modulation is off.
Burst or sweep mode will be disabled if FSK modulation is enabled. As only one modulation is allowed at any one time, other modulation modes will be disabled when FSK modulation is enabled.
SOURce[1|2]:FSKey:STATe {OFF|ON} Syntax
Example SOUR1:FSK:STAT ON
Query Syntax
Enables FSK modulation
SOURce[1|2]:FSKey:STATe?
Return Parameter 0 Disabled (OFF)
1 Enabled (ON)
160
Example SOUR1:FSK:STAT?
1
FSK modulation is currently enabled.
8-11-3. SOURce[1|2]:FSKey:SOURce
Description
Note
Set
Query
Sets or queries the FSK source as internal or external.
Internal is the default source.
If an external FSK source is selected, FSK rate is controlled by the Trigger INPUT terminal on the rear panel.
SOURce[1|2]:FSKey:SOURce {INTernal|EXTernal} Syntax
Example
Query Syntax
SOUR1:FSK:SOUR EXT
Sets the FSK source to external.
SOURce[1|2]:FSKey:SOURce?
Return Parameter INT
EXT
Internal
External
Example SOUR1:FSK:SOUR?
INT
The FSK source is set to internal.
8-11-4. SOURce[1|2]:FSKey:FREQuency
Description
Note
Syntax
Parameter
Set
Query
Sets the FSK hop frequency. The default hop frequency is set to 100Hz.
For FSK, the modulating waveform is a square wave with a duty cycle of 50%.
SOURce[1|2]:FSKey:FREQuency
{<frequency>|MINimum|MAXimum}
<frequency>
1 μHz~25MHz(sine)
1
μHz~15MHz(Square、Pulse)
1 μHz~1MHz(Ramp)
161
Example
Query Syntax
SOUR1:FSK:FREQ +1.0000E+02
Sets the FSK hop frequency to to 100Hz.
SOURce[1|2]:FSKey:FREQuency? [MINimum|MAXimum]
Return Parameter <NR3>
Example
Returns the frequency in Hz.
SOUR1:FSK:FREQ? MAX
+2.5000E+06
Returns the maximum hop frequency allowed.
8-11-5. SOURce[1|2]:FSKey:INTernal:RATE
Description
Note
Set
Query
Sets or queries the FSK rate for internal sources only.
External sources will ignore this command.
Syntax
Parameter
Example
Query Syntax
SOURce[1|2]:FSKey:INTernal:RATE {<rate in Hz>
|MINimum|MAXimum}
<rate in Hz> 2 mHz~100 kHz
SOUR1:FSK:INT:RATE MAX
Sets the rate to the maximum (100kHz).
SOURce[1|2]:FSKey:INTernal:RATE?
[MINimum|MAXimum]
Return Parameter <NR3>
Example
Returns the FSK rate in Hz.
SOUR1:FSK:INT:RATE? MAX
+1.0000E+05
Returns the maximum FSK rate allowed.
162
8-12. Phase Modulation (PM)Commands
8-12-1. PM Overview
The following is an overview of the steps required to generate a PM modulated waveform.
Enable PM
Modulation
1. Turn on PM modulation using the SOURce[1|2]:
PM:STATe ON command.
Configure Carrier 2. Use the APPLy command to select a carrier waveform.
Alternatively, the FUNC, FREQ, AMPl, and DCOffs commands can be used to create a carrier waveform with a designated frequency, amplitude and offset.
Select Modulation
Source 3. Select an internal or external modulation source using the
SOURce[1|2]:PM:SOUR command.
Select Shape
4. Use the SOURce[1|2]: PM:INT:FUNC command to select a sine, square, upramp, dnramp or triangle modulating waveshape. For internal sources only.
Select Modulating
Frequency
5. Set the modulating frequency using the
SOURce[1|2]:PM:INT:FREQ command. For internal sources only.
Set DEViation
6. Use the SOURce[1|2]:PM:DEV command to set the phase
DEViation.
8-12-2. SOURce[1|2]:PM:STATe
Description
Note
Syntax
Example
Set
Query
Turns PM Modulation on or off. By default PM modulation is off.
Burst or sweep mode will be disabled if PM modulation is enabled. As only one modulation is allowed at any one time, other modulation modes will be disabled when PM modulation is enabled.
SOURce[1|2]:PM:STATe {OFF|ON}
SOUR1:PM:STAT ON
Enables PM modulation
163
Query Syntax SOURce[1|2]:PM:STATe?
Return Parameter 0 Disabled (OFF)
Example
1 Enabled (ON)
SOUR1:PM:STAT?
1
PM modulation is currently enabled.
8-12-3. SOURce[1|2]:PM:SOURce
Description
Set
Query
Sets or queries the PM source as internal or external. Internal is the default source.
Note If an external PM source is selected, the phase modulation is controlled by the MOD INPUT terminal on the rear panel.
SOURce[1|2]:PM:SOURce {INTernal|EXTernal} Syntax
Example
Query Syntax
SOUR1:PM:SOUR EXT
Sets the PM source to external.
SOURce[1|2]:PM:SOURce?
Return Parameter INT
EXT
Example
Internal
External
SOUR1:PM:SOUR?
INT
The PM source is set to internal.
8-12-4. SOURce[1|2]:PM:INTernal:FUNction
Description
Note
Syntax
Set
Query
Sets the shape of the modulating waveform from sine, square, triangle, upramp and dnramp. The default shape is sine.
Square and triangle waveforms have a 50% duty cycle.
Upramp and dnramp have a symmetry to 100% and 0%, respectively. .
SOURce[1|2]:PM:INTernal:FUNction
{SINusoid|SQUare|TRIangle|UPRamp|DNRamp}
164
Example
Query Syntax
SOUR1:PM:INT:FUN SIN
Sets the PM modulating wave shape to sine. .
SOURce[1|2]:PM:INTernal:FUNction?
Return Parameter SIN
SQU
Example
TRI
Sine
Square
Triangle
SOUR1:PM:INT:FUNC?
SIN
UPRAMP
DNRAMP
Upramp
Dnramp
The shape for the modulating waveform is Sine.
8-12-5. SOURce[1|2]:PM:INTernal:FREQuency
Description
Set
Query
Sets the modulating waveform frequency for internal sources.
The default frequency is set to 100Hz.
Syntax
Parameter
Example
Query Syntax
SOURce[1|2]:PM:INTernal:FREQuency
{<frequency>|MINimum|MAXimum}
<frequency> 2 mHz~ 20 kHz
SOUR1:PM:INT:FREQ MAX
Sets the frequency to the maximum value.
SOURce[1|2]:PM:INTernal:FREQuency?
Return Parameter <NR3>
Example
Returns the frequency in Hz.
SOUR1:PM:INT:FREQ? MAX
+2.0000E+04
Returns the modulating frequency. (20kHz)
165
8-12-6. SOURce[1|2]:PM:DEViation
Description
Note
Syntax
Parameter
Example
Query Syntax
Set
Query
Sets or queries the phase deviation of the modulating waveform from the carrier waveform. The default phase deviation is 180°.
For external sources, the phase deviation is controlled by the
±5V MOD Input terminal on the rear panel. If the phase deviation is set to 180 degrees, then +5V represents a deviation of 180 degrees. A lower input voltage will decrease the set phase deviation.
SOURce[1|2]:PM:DEViation {< phase>|minimum
|maximum}
<percent> 0°~360°
SOUR1:PM:DEViation +3.0000E+01
Sets the deviation to 30°.
SOURce[1|2]:PM:DEViation?
Return Parameter <NR3>
Example
Returns the deviation .
SOUR1:PM:DEViation?
+3.0000E+01
The current deviation is 30°.
166
8-13. SUM Modulation (SUM) Commands
8-13-1. SUM Overview
The following is an overview of the steps required to generate a SUM modulated waveform.
Enable SUM
Modulation
1. Turn on SUM modulation using the SOURce[1|2]:
SUM:STATe ON command.
Configure Carrier 2. Use the APPLy command to select a carrier waveform.
Alternatively, the FUNC, FREQ, AMPl, and DCOffs commands can be used to create a carrier waveform with a designated frequency, amplitude and offset.
Select Modulation
Source
3. Select an internal or external modulation source using the
SOURce[1|2]:SUM:SOUR command.
Select Shape 4. Use the SOURce[1|2]: SUM:INT:FUNC command to select a sine, square, upramp, dnramp or triangle modulating waveshape. For internal sources only.
Select Modulating
5. Set the modulating frequency using the
SOURce[1|2]:SUM:INT:FREQ command. For internal
Frequency sources only.
Set AMPL
6. Use the SOURce[1|2]:SUM:AMPL command to set the modulating amplitude.
8-13-2. SOURce[1|2]:SUM:STATe
Description
Note
Syntax
Example
Set
Query
Turns SUM Modulation on or off. By default SUM modulation is off.
Burst or sweep mode will be disabled if SUM modulation is enabled. As only one modulation is allowed at any one time, other modulation modes will be disabled when SUM modulation is enabled.
SOURce[1|2]:SUM:STATe {OFF|ON}
SOUR1:SUM:STAT ON
Enables SUM modulation
167
Query Syntax SOURce[1|2]:SUM:STATe?
Return Parameter 0 Disabled (OFF)
Example
1 Enabled (ON)
SOUR1:SUM:STAT?
ON
SUM modulation is currently enabled.
8-13-3. SOURce[1|2]:SUM:SOURce
Description
Note
Syntax
Example
Query Syntax
Set
Query
Sets or queries the SUM source as internal or external.
Internal is the default source.
If an external SUM source is selected, the amplitude is controlled by the MOD INPUT terminal on the rear panel.
SOURce[1|2]:SUM:SOURce {INTernal|EXTernal}
SOUR1:SUM:SOUR EXT
Sets the SUM source to external.
SOURce[1|2]:SUM:SOURce?
Return Parameter INT
EXT
Example
Internal
External
SOUR1:SUM:SOUR?
INT
The SUM source is set to internal.
8-13-4. SOURce[1|2]:SUM:INTernal:FUNction
Description
Note
Set
Query
Sets the shape of the modulating waveform from sine, square, triangle, upramp and dnramp. The default shape is sine.
Square and triangle waveforms have a 50% duty cycle.
Upramp and dnramp have a symmetry to 100% and 0%, respectively. .
168
Syntax
Example
Query Syntax
SOURce[1|2]:SUM:INTernal:FUNction
{SINusoid|SQUare|TRIangle|UPRamp|DNRamp}
SOUR1:SUM:INT:FUN SIN
Sets the SUM modulating wave shape to sine.
SOURce[1|2]:SUM:INTernal:FUNction?
Return Parameter SIN
SQU
Example
TRI
Sine
Square
Triangle
SOUR1:SUM:INT:FUNC?
UPRAMP
DNRAMP
Upramp
Dnramp
SIN
The shape for the modulating waveform is Sine.
8-13-5.SOURce[1|2]:SUM:INTernal:FREQuency
Description
Set
Query
Sets the modulating waveform frequency for internal sources.
The default frequency is set to 100Hz.
Syntax SOURce[1|2]:SUM:INTernal:FREQuency
{<frequency>|MINimum|MAXimum}
<frequency> 2 mHz~ 20 kHz Parameter
Example
Query Syntax
SOUR1:SUM:INT:FREQ MAX
Sets the frequency to the maximum value.
SOURce[1|2]:SUM:INTernal:FREQuency?
Return Parameter <NR3> Returns the frequency in Hz.
Example SOUR1:SUM:INT:FREQ? MAX
+2.0000E+04
Returns the modulating frequency (20kHz).
8-13-6. SOURce[1|2]:SUM:AMPL
Description
Set
Query
Sets or queries the amplitude of the modulating waveform from the carrier waveform. The default phase amplitude is
50%.
169
Note
Syntax
Parameter
If an external SUM source is selected, the amplitude of the modulated waveform is controlled using the ±5V MOD
INPUT terminal on the rear panel. A positive signal (>0~+5V) will increase the AMPLitude (up to the set amplitude), whilst a negative voltage will reduce the amplitude.
SOURce[1|2]:SUM:AMPL{< percent>|minimum
|maximum}
<percent
>
0%~100%
SOUR1:SUM:AMPLitude +3.0000E+01
Sets the amplitude to 30%.
SOURce[1|2]:SUM:AMPLitude?
Example
Query Syntax
Return Parameter <NR3> Returns the amplitude .
Example SOUR1:SUM:AMPLitude?
+3.0000E+01
The current amplitude is 30%.
170
8-14. Frequency Sweep Commands
8-14-1. Sweep Overview
Below shows the order in which commands must be executed to perform a sweep.
Enable Sweep
Mode
Select waveform shape, amplitude and offset
1. Turn on Sweep mode modulation using the
SOURce[1|2]: SWE:STAT ON command.
2. Use the APPLy command to select the waveform shape.
Alternatively, the FUNC, FREQ, AMPl, and DCOffs commands can be used to create a waveform with a designated frequency, amplitude and offset.
Select Sweep
Boundaries
3. Set the frequency boundaries by setting start and stop frequencies or by setting a center frequency with a span.
Start~Stop Use the SOURce[1|2]:FREQ:STAR and
SOURce[1|2]:FREQ:STOP to set the start and stop frequencies. To sweep up or down, set the stop frequency higher or lower than the start frequency.
Span Use the SOURce[1|2]:FREQ:CENT and
SOURce[1|2]:FREQ:SPAN commands to set the center frequency and the frequency span. To sweep up or down, set the span as positive or negative.
4. Choose Linear or Logarithmic spacing using the
SOURce[1|2]:SWE:SPAC command.
Select Sweep
Mode
Select Sweep
Time
Select the sweep trigger source
Select the marker frequency
5. Choose the sweep time using the
SOURce[1|2]:SWE:TIME command.
6. Select an internal or external sweep trigger source using the SOURce[1|2]:SOUR command.
7. To output a marker frequency from the trigger out, use
The SOURce[1|2]:MARK:FREQ command. To enable marker frequency output, use the SOURce[1|2]:MARK
ON command.
The marker frequency can be set to a value within the sweep span.
171
8-14-2. SOURce[1|2]:SWEep:STATe
Description
Note
Syntax
Example
Query Syntax
Set
Query
Sets or disables Sweep mode. By default Sweep is disabled.
Sweep modulation must be enabled before setting other parameters.
Any modulation modes or Burst mode will be disabled if sweep mode is enabled.
SOURce[1|2]:SWEep:STATe {OFF|ON}
SOUR1:SWE:STAT ON
Enables sweep mode.
SOURce[1|2]:SWEep:STATe?
Return Parameter 0
Example
Disabled (OFF)
1 Enabled (ON)
SOUR1:SWE:STAT?
1
Sweep mode is currently enabled.
8-14-3. SOURce[1|2]:FREQuency:STARt
Description
Note
Syntax
Parameter
Example
Query Syntax
Set
Query
Sets the start frequency of the sweep. 100Hz is the default start frequency.
To sweep up or down, set the stop frequency higher or lower than the start frequency.
SOURce[1|2]:FREQuency:STARt
{<frequency>|MINimum|MAXimum}
<frequency> 1μHz~ 25MHz
1μHz~ 15MHz(Square)
1μHz~ 1MHz (Ramp)
SOUR1:FREQ:STAR +2.0000E+03
Sets the start frequency to 2kHz.
SOURce[1|2]:FREQuency:STARt? [MINimum|
MAXimum]
Return Parameter <NR3> Returns the start frequency in Hz.
172
Example SOUR1:FREQ:STAR? MAX
+8.0000E+0
Returns the maximum start frequency allowed.
8-14-4. SOURce[1|2]:FREQuency:STOP
Description
Set
Query
Sets the stop frequency of the sweep. 1 kHz is the default start frequency.
Note
Syntax
Parameter
To sweep up or down, set the stop frequency higher or lower than the start frequency.
SOURce[1|2]:FREQuency:STOP
{<frequency>|MINimum|MAXimum}
<frequency>
1μHz~ 25MHz
1μHz~ 15MHz(Square)
1μHz~ 1MHz (Ramp)
SOUR1:FREQ:STOP +2.0000E+03 Example
Query Syntax
Sets the stop frequency to 2kHz.
SOURce[1|2]:FREQuency:STOP? [MINimum|
MAXimum]
Return Parameter <NR3>
Example
Returns the stop frequency in Hz.
SOUR1:FREQ:STOP? MAX
+8.0000E+00
Returns the maximum stop frequency allowed.
8-14-5. SOURce[1|2]:FREQuency:CENTer
Description
Set
Query
Sets and queries the center frequency of the sweep. 550 Hz is the default center frequency.
Note
Syntax
The maximum center frequency depends on the sweep span and maximum frequency: max center freq = max freq
– span/2
SOURce[1|2]:FREQuency:CENTer {<frequency>
|MINimum|MAXimum}
173
Parameter
Example
Query Syntax
<frequency> 450Hz~ 25MHz
450Hz~ 15MHz(Square)
450Hz~ 1MHz (Ramp)
SOUR1:FREQ:CENT +2.0000E+03
Sets the center frequency to 2kHz.
SOURce[1|2]:FREQuency:CENTer? [MINimum|
MAXimum]
Return Parameter <NR3>
Example
Returns the stop frequency in Hz.
SOUR1:FREQ:CENT? MAX
+8.0000E+00
Returns the maximum center frequency allowed, depending on the span.
8-14-6. SOURce[1|2]:FREQuency:SPAN
Description
Set
Query
Sets and queries the frequency span of the sweep. 900 Hz is the default frequency span. The span frequency is equal to the stop-start frequencies.
Note
Syntax
Parameter
To sweep up or down, set the span as positive or negative.
The maximum span frequency has a relationship to the center frequency and maximum frequency: max freq span= 2(max freq
– center freq)
SOURce[1|2]:FREQuency:SPAN
{<frequency>|MINimum|MAXimum}
<frequency> 1
μHz~ 25MHz
1μHz~ 15MHz(Square)
1μHz~ 1MHz (Ramp)
SOUR1:FREQ:SPAN +2.0000E+03 Example
Query Syntax
Sets the frequency span to 2kHz.
SOURce[1|2]:FREQuency:SPAN? [MINimum|
MAXimum]
Return Parameter <NR3> Returns the frequency span in Hz.
174
Example SOUR1:FREQ:SPAN?
+2.0000E+03
Returns the frequency span for the current sweep.
8-14-7. SOURce[1|2]:SWEep:SPACing
Description
Syntax
Example
Query Syntax
Set
Query
Sets linear or logarithmic sweep spacing. The default spacing is linear.
SOURce[1|2]:SWEep:SPACing {LINear|LOGarithmic}
SOUR1:SWE:SPAC LIN
Sets the spacing to linear.
SOURce[1|2]:SWEep:SPACing?
Return Parameter LIN
LOG
Example
Linear spacing
Logarithmic spacing
SOUR1:SWE:SPAC?
LIN
The spacing is currently set as linear.
8-14-8. SOURce[1|2]:SWEep:TIME
Description
Set
Query
Sets or queries the sweep time. The default sweep time is 1 second.
Note
Syntax
Parameter
Example
The function generator automatically determines the number of frequency points that are used for the sweep based on the sweep time.
SOURce[1|2]:SWEep:TIME
{<seconds>|MINimum|MAXimum}
<seconds> 1 ms ~ 500 s
SOUR1:SWE:TIME +1.0000E+00
Sets the sweep time to 1 second.
175
Query Syntax SOURce[1|2]:SWEep:TIME? {<seconds>|
MINimum|MAXimum}
Return Parameter <NR3> Returns sweep time in seconds.
Example SOUR1:SWE:TIME?
+2.0000E+01
Returns the sweep time (20 seconds).
8-14-9. SOURce[1|2]:SWEep:SOURce
Description
Note
Syntax
Set
Query
Sets or queries the trigger source as immediate (internal), external or manual. Immediate (internal) is the default trigger source. IMMediate will constantly output a swept waveform.
EXTernal will output a swept waveform after each external trigger pulse. Manual will ouput a swept waveform after the trigger softkey is pressed.
If the APPLy command was used to create the waveform shape, the source is automatically set to IMMediate.
The *OPC/*OPC? command/query can be used to signal the end of the sweep.
SOURce[1|2]: SWEep:SOURce {IMMediate|EXTernal|
MANual}
SOUR1: SWE:SOUR EXT
Sets the sweep source to external.
SOURce[1|2]: SWEep:SOURce?
Example
Query Syntax
Return Parameter IMM
EXT
Example
MANual
Immediate
External
Manual
SOUR1:SWE:SOUR?
IMM
The sweep source is set to immediate.
176
8-14-10. SOURce[1|2]:MARKer:FREQuency
Description
Note
Syntax
Set
Query
Sets or queries the marker frequency. The default marker frequency is 550 Hz. The marker frequency is used to output a trigger out signal from the trigger terminal on the rear panel.
The marker frequency must be between the start and stop frequencies. If the marker frequency is set to a value that is out of the range, the marker frequency will be set to the center frequency and a “settings conflict” error will be generated.
SOURce[1|2]:MARKer:FREQuency
{<frequency>|MINimum|MAXimum}
Parameter
Example
Query Syntax
SOUR1:MARK:FREQ +1.0000E+03
Sets the marker frequency to 1 kHz.
SOURce[1|2]:MARKer:FREQuency? [MINimum|
MAXimum]
Return Parameter <NR3>
Example
Returns the marker frequency in Hz.
SOUR1:MARK:FREQ? MAX
+1.0000E+03
Returns the marker frequency (1 kHz).
8-14-11. SOURce[1|2]:MARKer
Description
Note
Syntax
Example
Set
Query
Turns the marker frequency on or off. The default is off.
MARKer ON The SYNC signal goes logically high at the start of each sweep and goes low at the marker frequency.
MARKer OFF The SYNC terminal outputs a square wave with a 50% duty cycle at the start of each sweep.
SOURce[1|2]:MARKer {OFF|ON}
SOUR1:MARK ON
Enables the marker frequency.
177
Query Syntax SOURce[1|2]:MARKer?
Return Parameter 0
1
Example
Disabled
Enabled
SOUR1:MARK?
1
The marker frequency is enabled.
8-15. Burst Mode Commands
8-15-1. Burst Mode Overview
Burst mode can be configured to use an internal trigger (N Cycle mode) or an external trigger (Gate mode) using the Trigger INPUT terminal on the rear panel.
Using N Cycle mode, each time the function generator receives a trigger, the function generator will output a specified number of waveform cycles (burst). After the burst, the function generator will wait for the next trigger before outputting another burst. N Cycle is the default Burst mode.
The alternative to using a specified number of cycles, Gate mode uses the external trigger to turn on or off the output. When the Trigger INPUT signal is high*, waveforms are continuously output (creating a burst). When the Trigger
INPUT signal goes low*, the waveforms will stop being output after the last waveform completes its period. The voltage level of the output will remain equal to the starting phase of the burst waveforms, ready for the signal to go high* again.
*assuming the Trigger polarity is not inverted.
Only one burst mode can be used at any one time. The burst mode depends on the source of the trigger (internal, external, manual) and the source of the burst.
Function
Burst Mode & Source
Triggered
– IMMediate, BUS
N Cycle*
Available
Triggered - EXTernal, MANual Available
Gated pulse - IMMediate Unused
*burst count
Cycle
Available
Unused
Unused
Phase
Available
Available
Available
178
The following is an overview of the steps required to generate a burst waveform.
Enable Burst
Mode
Configuration
1. Turn on Burst mode using the
SOURce[1|2]:BURS:STAT ON command.
2. Use the APPLy command to select a sine, square, ramp, pulse burst waveform*. Alternatively, the FUNC, FREQ,
AMPl, and DCOffs commands can be used to create the burst waveform* with a designated frequency, amplitude and offset.
Choose
Triggered/Gated
Mode
Set Burst Count
Set the burst period
Set Burst Starting
Phase
Select the trigger
*2 mHz minimum for internally triggered bursts.
3. Use the SOURce[1|2]: BURS:MODE command to select from triggered or gated burst modes.
4. Use the SOURce[1|2]:BURS:NCYC command to set the burst count. This command is only for triggered burst mode only.
5. Use the SOURce[1|2]:BURS:INT:PER command to set the burst period/cycle. This command is only applicable for triggered burst mode (internal trigger).
6. Use the SOURce[1|2]:BURS:PHAS command to set the burst starting phase.
7. Use the SOURce[1|2]:BURS:TRIG:SOUR command to select the trigger source for triggered burst mode only.
8-15-2. SOURce[1|2]:BURSt:STATe
Description
Note
Syntax
Example
Set
Query
Turns burst mode on or off. By default burst mode is turned off.
When burst mode is turned on, sweep and any modulation modes are disabled.
SOURce[1|2]:BURSt:STATe {OFF|ON}
SOUR1:BURS:STAT ON
Turns burst mode on.
179
Query Syntax SOURce[1|2]:BURSt:STATe?
Return Parameter 0
1
Example
Disabled
Enabled
SOUR1:BURS:STAT?
0
Burst mode is off.
8-15-3. SOURce[1|2]:BURSt:MODE
Description
Note
Set
Query
Sets or queries the burst mode as gated or triggered. The default burst mode is triggered.
The burst count, period, trigger source and any manual trigger commands are ignored in gated burst mode.
SOURce[1|2]:BURSt:MODE {TRIGgered|GATed} Syntax
Example
Query Syntax
SOUR1:BURS:MODE TRIG
Sets the burst mode to triggered.
SOURce[1|2]:BURSt:MODE?
Return Parameter TRIG Triggered mode
GAT Gated mode
Example SOUR1:BURS:MODE?
TRIG
The current burst mode is triggered.
8-15-4. SOURce[1|2]:BURSt:NCYCles
Description
Set
Query
Sets or queries the number of cycles (burst count) in triggered burst mode. The default number of cycles is 1. The burst count is ignored in gated mode.
180
Note
Syntax
If the trigger source is set to immediate, the product of the burst period and waveform frequency must be greater than the burst count:
Burst Period X Waveform frequency > burst count
If the burst count is too large, the burst period will automatically be increased and a “Settings conflict” error will be generated.
Only sine and square waves are allowed infinite burst above
25 MHz.
SOURce[1|2]:BURSt:NCYCles{< # cycles>
|INFinity|MINimum |MAXimum}
<# cycles> 1~65535 cycles.
INFinity Sets the number to continuous.
Parameter
Example
Query Syntax
MINimum
SOUR1:BURS:NCYCl INF
Sets the number of burst cycles to continuous (infinite).
SOURce[1|2]:BURSt:NCYCles? [MINimum|MAXimum]
Return Parameter <NR3>
INF
Sets the number to minimum allowed.
MAXimum Sets the number to maximum allowed.
Returns the number of cycles.
INF is returned if the number of cycles is continuous.
Example SOUR1:BURS:NCYC?
+1.0000E+02
The burst cycles are set to 100.
8-15-5. SOURce[1|2]:BURSt:INTernal:PERiod
Description
Set
Query
Sets or queries the burst period. Burst period settings are only applicable when the trigger is set to immediate. The default burst period is 10ms.
During manual triggering, external triggering or Gate burst mode, the burst period settings are ignored.
181
Note
Syntax
The burst period must be long enough to output the designated number of cycles for a selected frequency.
Burst period > burst count/(waveform frequency + 200 ns)
If the period is too short, it is automatically increased so that a burst can be continuously output. A “data out of range” error will also be generated.
SOURce[1|2]:BURSt:INTernal:PERiod
{<seconds>|MINimum|MAXimum}
Parameter
Example
Query Syntax
<seconds > 1 ms ~ 500 seconds
SOUR1:BURS:INT:PER +1.0000E+01
Sets the period to 10 seconds.
SOURce[1|2]:BURSt:INTernal:PERiod?
[MINimum|MAXimum]
Return Parameter <NR3>
Example
Returns the burst period in seconds.
SOUR1:BURS:INT:PER?
+1.0000E+01
The burst period is 10 seconds.
8-15-6. SOURce[1|2]:BURSt:PHASe
Description
Set
Query
Sets or queries the starting phase for the burst. The default phase is 0 degrees. At 0 degrees, sine square and ramp waveforms are at 0 volts.
In gated burst mode, waveforms are continuously output
(burst) when the Trig signal is true. The voltage level at the starting phase is used to determine the voltage level of the signal in-between bursts.
Note
Syntax
The phase command is not used with pulse waveforms.
SOURce[1|2]:BURSt:PHASe
{<angle>|MINimum|MAXimum}
<angle> -360 ~ 360 degrees Parameter
Example
Query Syntax
SOUR1:BURS:PHAS MAX
Sets the phase to 360 degrees.
SOURce[1|2]:BURSt:PHASe? [MINimum|MAXimum]
Return Parameter <NR3> Returns the phase angle in degrees.
182
Example SOUR1:BURS:PHAS?
+1.2000E+02
The burst phase is 120 degrees.
8-15-7. SOURce[1|2]:BURSt:TRIGger:SOURce
Description
Note
Syntax
Set
Query
Sets or queries the trigger source for triggered burst mode. In trigged burst mode, a waveform burst is output each time a trigger signal is received and the number of cycles is determined by the burst count.
There are three trigger sources for triggered burst mode:
Immediate A burst is output at a set frequency determined by the burst period.
External
Manual
EXTernal will output a burst waveform after each external trigger pulse. Any additional trigger pulse signals before the end of the burst are ignored.
Manual triggering will output a burst waveform after the trigger softkey is pressed.
If the APPLy command was used, the source is automatically set to IMMediate.
The *OPC/*OPC? command/query can be used to signal the end of the burst.
SOURce[1|2]:BURSt:TRIGger:SOURce
{IMMediate|EXTernal|MANual}
Example
Query Syntax
SOUR1:BURS:TRIG:SOUR EXT
Sets the burst trigger source to external.
SOURce[1|2]:BURSt:TRIGger:SOURce?
Return Parameter IMM
EXT
Example
MANual
Immediate
External
Manual
SOUR1:BURS:TRIG:SOUR?
IMM
The burst trigger source is set to immediate.
183
8-15-8. SOURce[1|2]:BURSt:TRIGger:DELay
Description
Set
Query
The DELay command is used to insert a delay (in seconds) before a burst is output. The delay starts after a trigger is received. The default delay is 0 seconds.
Syntax SOURce[1|2]: BURSt:TRIGger:DELay
{<seconds>|MINimum|MAXimum}
<seconds> 0~655350 nS Parameter
Example
Query Syntax
SOUR1:BURS:TRIG:DEL +1.0000E+01
Sets the trigger delay to 10 seconds.
SOURce[1|2]:BURSt:TRIGger:DELay?
[MINimum|MAXimum]
Return Parameter <NRf> Delay in seconds
Example SOUR1:BURS:TRIG:DEL ?
+1.0000E+01
The trigger delay is 10 seconds.
8-15-9. SOURce[1|2]:BURSt:TRIGger:SLOPe
Description
Syntax
Set
Query
Sets or queries the trigger edge for externally triggered bursts from the Trigger INPUT terminal on the rear panel. By default the trigger is rising edge (Positive).
SOURce[1|2]:BURSt:TRIGger:SLOPe
{POSitive|NEGative}
Parameter
Example
Query Syntax
POSitive rising edge
NEGative falling edge
SOUR1:BURS:TRIG:SLOP NEG
Sets the trigger slope to negative.
SOURce[1|2]:BURSt:TRIGger:SLOPe?
Return Parameter POS
NEG rising edge falling edge
184
Example SOUR1:BURS:TRIG:SLOP ?
NEG
The trigger slope is negative.
8-15-10. SOURce[1|2]:BURSt:GATE:POLarity
Description
Syntax
Parameter
Example
Query Syntax
Set
Query
In gated mode, the function generator will output a waveform continuously while the external trigger receives logically true signal from the Trigger INPUT terminal. Normally a signal is logically true when it is high. The logical level can be inverted so that a low signal is considered true.
SOURce[1|2]:BURSt:GATE:POLarity
{NORMal|INVertes}
NORMal Logically high
INVertes Logically low
SOUR1:BURS:GATE:POL INV
Sets the state to logically low (inverted).
SOURce[1|2]:BURSt:GATE:POLarity?
Return Parameter NORM
INV
Example
Normal(High) logical level
Inverted (low) logical level
SOUR1:BURS:GATE:POL?
INV
The true state is inverted(logically low).
8-15-11. SOURce[1|2]:BURSt:OUTPut:TRIGger:SLOPe
Description
Set
Query
Sets or queries the trigger edge of the trigger output signal.
The signal is output from the trigger out terminal on the rear panel. The default trigger output slope is positive.
Immediate 50% duty cycle square wave is output at the start of each burst.
External
Gated mode
Trigger output disabled.
Trigger output disabled.
185
Syntax
Manual A >1 ms pulse is output at the start of each burst.
SOURce[1|2]:BURSt:OUTPut:TRIGger:SLOPe
{POSitive|NEGative}
Parameter
Example
Query Syntax
POSitive
NEGative
Return Parameter POS
NEG
Rising edge.
Falling edge.
SOUR1:BURS:OUTP:TRIG:SLOP POS
Sets the trigger output signal slope to positive (rising edge).
SOURce[1|2]:BURSt:OUTPut:TRIGger:SLOPe?
Rising edge.
Falling edge.
Example SOUR1:BURS:OUTP:TRIG:SLOP?
POS
The trigger output signal slope to positive.
8-15-12. OUTPut[1|2]:TRIGger
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter 0
1
Set
Query
Sets or queries the trigger output signal on or off. By default the signal is disabled. When enabled, a TTL compatible square wave is output.
OUTPut[1|2]:TRIGger {OFF|ON}
OFF
ON
Turns the output off.
Turns the output on.
OUTP1:TRIG ON
Turns the output on.
OUTPut[1|2]:TRIGger?
Disabled
Enabled
Query Example OUTP1:TRIG?
1
The trigger output is enabled.
186
8-15-13. SOURce[1|2]:BURSt:TRIGger:MANual
Description
Syntax
Example
Set
This command is used to manually trigger a burst waveform when the source trigger is set to manual for the selected channel. This command is the equivalent of pressing the trigger soft-key on the front panel for manual triggering.
SOURce[1|2]:BURSt:TRIGger:MANual
SOUR1:BURS:TRIG:MAN
. Manually triggers the burst waveform.
8-16. Arbitrary Waveform Commands
8-16-1. Arbitrary Waveform Overview
Use the steps below to output an arbitrary waveform over the remote interface.
Output Arbitrary
Waveform
1. Use the SOURce[1|2]:FUNCtion USER command to output the arbitrary waveform currently selected in memory.
Select Waveform
Frequency, amplitude and offset
Load Waveform
Data
Set Waveform
Rate
2. Use the APPLy command to select frequency, amplitude and DC offset. Alternatively, the FUNC,
FREQ, AMPl, and DCOffs commands can be used.
3. Waveform data (1 to 4096 points per waveform) can be downloaded into volatile memory using the
DATA:DAC command. Binary integer or decimal integer values in the range of ± 511 can be used.
4. The waveform rate is the product of the number of points in the waveform and the waveform frequency.
Rate = Hz × # points
Range: Rate:
Frequency: 60MHz
# points:
120MHz
1~4096
187
8-16-2. SOURce[1|2]:FUNCtion USER
Description
Syntax
Set
Use the SOURce[1|2]:FUNCtion USER command to output the arbitrary waveform currently selected in memory. The waveform is output with the current frequency, amplitude and offset settings.
SOURce[1|2]:FUNCtion USER
Example SOUR1:FUNC USER
Selects and outputs the current waveform in memory.
8-16-3. SOURce[1|2]:DATA:DAC
Description
Set
The SOURce[1|2]:DATA:DAC command is used to download binary or decimal integer values into memory using the
IEEE-488.2 binary block format or as an ordered list of values.
Note
The integer values (±511) correspond to the maximum and minimum peak amplitudes of the waveform. For instance, for a waveform with an amplitude of 5Vpp (0 offset), the value
511is the equivalent of 2.5 Volts. If the integer values do not span the full output range, the peak amplitude will be limited.
Syntax
Parameter
The IEEE-488.2 binary block format is comprised of three parts:
# 7 2097152 1. Initialization character (#)
1 2 3
2. Digit length (in ASCII) of the number of bytes
3. Number of bytes
IEEE 488.2 uses two bytes to represent waveform data (16 bit integer). Therefore the number of bytes is always twice the number of data points.
SOURce[1|2]:DATA:DAC VOLATILE, <start>，{<binary
block>|<value>, <value>, . . . }
<start>
<binary block>
Start address of the arbitrary waveform
<value> Decimal or integer values ±511
188
Example SOUR1:DATA:DAC VOLATILE, #216 Binary Data
The command above downloads 5 data values (stored in 16 bytes) using the binary block format.
SOUR1:DATA:DAC VOLATILE, 1000, 511, 200, 0, -200,
-511
Downloads the data values (511, 200, 0, -200, -511) to address 1000.
8-16-4. SOURce[1|2]:ARB:EDIT:COPY
Description
Syntax
Set
Copies a segment of a waveform to a specific starting address.
SOURce[1|2]:ARB:EDIT:COPY
[<start>[,<length>[,<paste>]]]
Parameter <start>
<length>
<paste>
Start address: 0~4095
1 ~ 4096
Paste address: 0~4095
Example SOUR1:ARB:EDIT:COPY 1000, 256, 1257
Copies 256 data values starting at address 1000 and copies them to address 1257.
8-16-5. SOURce[1|2]:ARB:EDIT:DELete
Description
Note
Syntax
Parameter
Example
Set
Deletes a segment of a waveform from memory. The segment is defined by a starting address and length.
A waveform/waveform segment cannot be deleted when output.
SOURce[1|2]:ARB:EDIT:DELete [<STARt>[,<LENGth>]]
<STARt>
<LENGth>
Start address: 0~4095
1 ~ 4096
SOURce1:ARB:EDIT:DEL 1000, 256
Deletes a section of 256 data points from the waveform starting at address 1000.
189
8-16-4. SOURce[1|2]:ARB:EDIT:DELete:ALL
Description
Note
Syntax
Set
Deletes all user-defined waveforms from non-volatile memory and the current waveform in volatile memory.
A waveform cannot be deleted when output.
SOURce[1|2]:ARB:EDIT:DELete:ALL
Example SOUR1:ARB:EDIT:DEL:ALL
Deletes all user waveforms from memory.
8-16-7. SOURce[1|2]:ARB:EDIT:POINt
Description
Note
Description
Note
Syntax
Parameter
Set
Edit a point on the arbitrary waveform.
A waveform/waveform segment cannot be deleted when output.
SOURce[1|2]:ARB:EDIT:POINt [<address> [, <data>]] Syntax
Parameter <address>
<data>
Address of data point: 0~4095
Value data: ± 511
SOUR1:ARB:EDIT:POIN 1000, 511 Example
Creates a point on the arbitrary waveform at address 1000 with the highest amplitude.
8-16-8. SOURce[1|2]:ARB:EDIT:LINE
Set
Edit a line on the arbitrary waveform. The line is created with a starting address and data point and a finishing address and data point.
A waveform/waveform segment cannot be deleted when output.
SOURce[1|2]:ARB:EDIT:LINE
[<address1>[,<data>[,<address2>[,<data2>]]]]
<addrress1> Address of data point1: 0~4095
<data1> Value data2: ± 511
<address2> Address of data point2: 0~4095
<data2> Value data2: ± 511
190
Example SOUR1:ARB:EDIT:LINE 40, 50, 100, 50
Creates a line on the arbitrary waveform at 40,50 to 100,50.
8-16-9. SOURce[1|2]:ARB:EDIT:PROTect
Description
Syntax
Set
Protects a segment of the arbitrary waveform from deletion or editing.
SOURce[1|2]:ARB:EDIT:PROTect [<STARt>[,<LENGth>]
Parameter <STARt> Start address: 0~4095
<LENGth> 1 ~ 4096
SOUR1:ARB:EDIT:PROT 40, 50 Example
Protects a segment of the waveform from address 40 for 50 data points.
8-16-10. SOURce[1|2]:ARB:EDIT:PROTect:ALL
Description
Syntax
Set
Protects the arbitrary waveform currently in non-volatile memory/ currently being output.
SOURce[1|2]:ARB:EDIT:PROTect:ALL
Example SOUR1:ARB:EDIT:PROT:ALL
8-16-11. SOURce[1|2]:ARB:EDIT:UNProtect
Description
Set
Uprotects the arbitrary waveform currently in non-volatile memory/currently being output.
SOURce[1|2]:ARB:EDIT:UNProtect Syntax
Example SOUR1:ARB:EDIT:UNP
8-16-12. SOURce[1|2]:ARB:OUTPut
Description
Syntax
Set
Output the current arbitrary waveform in volatile memory. A specified start and length can also be designated.
SOURce[1|2]:ARB:OUTPut [<STARt>[,<LENGth>]]
191
Parameter <STARt> Start address*: 0~4096
<LENGth> Length*: 0 ~ 4096
* Start + Length ≤ currently output arbitrary waveform
SOUR1:ARB:OUTP 20 200 Example
Outputs the current arbitrary waveform in memory.
8-17. COUNTER Commands
The frequency counter function can be turned on remotely to control the frequency counter.
8-17-1. COUNTER:STATE
Description
Set
Query
Turns the frequency counter function on or off.
COUNter:STATe {ON|OFF} Syntax
Example COUNter:STATe ON
Query Syntax
Turns the frequency counter on
COUNter:STATe?
Return Parameter 1 ON
Example
0 OFF
COUNter:STATe?
1
Turns on the frequency counter.
8-17-2. COUNter:GATe
Description
Syntax
Example
Syntax
Set
Query
Sets the gate time for the frequency counter.
COUNter:GATe {0.01|0.1|1|10}
COUNter:GATe 1
Sets the gate time to 1S.
COUNter:GATe? {max|min}
192
Example COUNter:GATe?
1
Returns the gate time: 1S.
8-17-3. COUNter:VALue?
Description
Set
Query
Returns the current value from the frequency counter.
Syntax
Example
COUNter:VALue?
COUNter:VALue?
+5.00E+02
Returns the frequency as 500Hz.
8-18. PHASE Commands
The phase command remotely controls the phase and channel synchronization.
8-18-1. SOURce[1|2]:PHASe
Description
Syntax
Parameter
Set
Query
Sets the phase.
SOURce[1|2]:PHASe {<phase>|<MIN>|<MAX>} phase min
-180~180
Sets the phase to the minimum value.
Example max Sets the phase to the maxium value.
SOURce1:PHASe 25
Query Syntax
Sets the phase of channel 1 to 25°.
SOURce[1|2]:PHASe? {MAX|MIN}
Return Parameter phase
Example
Returns the current phase.
SOURce1:PHASe?
26
Returns the phase of channel 1 as 26°.
193
8-18-2. SOURce[1|2]:PHASe:SYNChronize
Description
Syntax
Set
Sychronizes the phase of channel 1 and channel 2. SOURce1 or SOURce2 has not effect on this command.
SOURce[1|2]:PHASe:SYNChronize
Example SOURce1:PHASe:SYNChronize
Synchronizes the phase of channel 1 and channel 2.
8-19. COUPLE Commands
The Couple commands can be used to remotely set the frequency coupling and amplitude coupling.
8-19-1.SOURce[1|2]:FREQuency:COUPle:MODE
Description
Syntax
Example
Query Syntax
Set the frequency coupling mode.
SOURce[1|2]:FREQuency:COUPle:MODE
{Off|Offset|Ratio}
Set
Query
SOURce1:FREQuency:COUPle:MODE Offset
Sets the frequency coupling mode to offset.
SOURce[1|2]:FREQuency:COUPle:MODE？
Return Parameter Off Disables frequency coupling.
Offset Set frequency coupling to offset mode.
Example
Ratio Sets frequency coupling to ratio mode.
SOURce1:FREQuency:COUPle:MODE？
Off
Frequency coupling is turned off.
8-19-2. SOURce[1|2]:FREQuency:COUPle:OFFSet
Description
Set
Query
Sets the offset frequency when the frequency coupling mode is set to offset.
SOURce[1|2]:FREQuency:COUPle:OFFSet {frequency} Syntax
194
Example
Syntax
Example
SOURce1:FREQuency:COUPle:OFFSet 2khz
Sets the offset frequency to 2kHz (the frequency of CH2 minus CH1 is 2kHz).
SOURce[1|2]:FREQuency:COUPle:OFFSet?
SOURce1:FREQuency:COUPle:OFFSet?
+2.0000E+03
The offset of channel 2 from channel 1 is 2kHz.
8-19-3. SOURce[1|2]:FREQuency:COUPle:RATio
Description
Syntax
Set
Query
Sets the frequency coupling ratio when frequency coupling is set to ratio mode.
SOURce[1|2]:FREQuency:COUPle:RATio {ratio}
SOURce1:FREQuency:COUPle:RATio 2 Example
Query Syntax
Set the CH2 to CH1 frequency ratio to 2.
SOURce[1|2]:FREQuency:COUPle:RATio?
Example SOURce1:FREQuency:COUPle:RATio?
+2.0000E+00
Returns the CH2 to CH1 frequency ratio as 2.
8-19-4. SOURce[1|2]:AMPlitude:COUPle:STATe
Description Enables or disables the amplitude coupling.
Set
Query
Syntax
Example
Description
Query Syntax
SOURce[1|2]:AMPlitude:COUPle:STATe {ON|Off}
SOURce1:AMPlitude:COUPle:STATe on
Turns amplitude coupling on.
SOURce[1|2]:AMPlitude:COUPle:STATe?
Return Parameter 1 ON
0 Off
195
Example SOURce1:AMPlitude:COUPle:STATe?
1
Amplitude coupling has been enabled.
8-19-5. SOURce[1|2]:TRACk
Description
Set
Query
Turns tracking on or off.
SOURce[1|2]:TRACk {ON|OFF|INVerted} Syntax
Example SOURce1:TRACk ON
Turns tracking on. Channel 2 will “track” the changes of channel 1.
Query Syntax SOURce[1|2]:TRACk?
Return Parameter ON ON
Example
OFF
INV
OFF
INVerted
SOURce1:TRACk?
ON
Channel tracking is turned on.
8-20. Save and Recall Commands
Up to 10 different instrument states can be stored to non-volatile memory
(memory locations 0~9).
196
8-20-1. *SAV
Description
Note
Syntax
Example
Set
Saves the current instrument state to a specified save slot.
When a state is saved, all the current instrument settings, functions and waveforms are also saved.
The *SAV comma nd doesn’t save waveforms in non-volatile memory, only the instrument state.
The *RST command will not delete saved instrument states from memory.
*SAV {0|1|2|3|4|5|6|7|8|9}
*SAV 0
Save the instrument state to memory location 0.
8-20-2. *RCL
Description
Set
Recall previously saved instrument states from memory locations 0~9.
*RCL {0|1|2|3|4|5|6|7|8|9} Syntax
Example *RCL 0
Recall instrument state from memory location 0.
8-20-3. MEMory:STATe:DELete
Description
Syntax
Set
Delete memory from a specified memory location.
MEMory:STATe:DELete {0|1|2|3|4|5|6|7|8|9}
Example MEM:STAT:DEL 0
Delete instrument state from memory location 0.
8-20-4. MEMory:STATe:DELete ALL
Description
Syntax
Example
Set
Delete memory from all memory locations, 0~9.
MEMory:STATe:DELete ALL
MEM:STAT:DEL ALL
Deletes all the instrument states from memory locations 0~9.
197
8-21. Error Messages
The FGX-2220 has a number of specific error codes. Use the SYSTem:ERRor command to recall the error codes. For more information regarding the error queue.
8-21-1.Command Error Codes
-101 Invalid character
An invalid character was used in the command string. Example:
#, $, %.
-102 Syntax error
SOURce1:AM:DEPTh MIN%
Invalid syntax was used in the command string. Example: An unexpected character may have been encountered, like an unexpected space.
SOURce1:APPL:SQUare , 1
-103 Invalid separator
An invalid separator was used in the command string. Example: a space, comma or colon was incorrectly used.
APPL:SIN 1 1000 OR SOURce1:APPL:SQUare
-108 Parameter not allowed
The command received more parameters than were expected.
Example: An extra (not needed) parameter was added to a command
SOURce1:APPL? 10
-109 Missing parameter
The command received less parameters than expected.
Example: A required parameter was omitted.
SOURce1:APPL:SQUare .
-112 Program mnemonic too long
A command header contains more than 12 characters:
OUTP:SYNCHRONIZATION ON
-113 Undefined header
An undefined header was encountered. The header is syntactically correct. Example: the header contains a character mistake.
SOUR1:AMM:DEPT MIN
-123 Exponent too large
Numeric exponent exceeds 32,000. Example:
SOURce[1|2]:BURSt:NCYCles 1E34000
-124 Too many digits
The mantissa (excluding leading 0’s) contains more than 255 digits.
-128 Numeric data not allowed
An unexpected numeric character was received in the command. Example: a numeric parameter is used instead of a character string.
SOURce1:BURSt:MODE 123
198
-131 Invalid suffix
An invalid suffix was used. Example: An unknown or incorrect suffix may have been used with a parameter.
SOURce1:SWEep:TIME 0.5 SECS
-138 Suffix not allowed
A suffix was used where none were expected. Example: Using a suffix when not allowed.
SOURce1:BURSt: NCYCles 12 CYC
-148 Character data not allowed
A parameter was used in the command where not allowed.
Example: A discrete parameter was used where a numeric parameter was expected.
SOUR1:MARK:FREQ ON
-158 String data not allowed
An unexpected character string was used where none were expected. Example: A character string is used instead of a valid parameter.
SOURce1:SWEep:SPACing ’TEN’
-161 Invalid block data
Invalid block data was received. Example: The number of bytes sent with the DATA:DAC command doesn’t correlate to the number of bytes specified in the block header.
-168 Block data not allowed
Block data was received where block data is not allowed.
Example:
SOURce1:BURSt: NCYCles #10
-170~178 expression errors
Example: The mathematical expression used was not valid.
8-21-2.Execution Errors
-211 Trigger ignored
A trigger was received but ignored. Example: Triggers will be ignored until the function that can use a trigger is enabled
(burst, sweep, etc.).
-223 Too much data
Data was received that contained too much data. Example: An arbitrary waveform with over 4096 points cannot be used.
-221 Settings conflict; turned off infinite burst to allow immediate trigger source
Example: Infinite burst is disabled when an immediate trigger source is selected. Burst count set to 65535 cycles.
-221 Settings conflict; infinite burst changed trigger source to MANual
Example: The trigger source is changed to immediate from manual when infinite burst mode is selected.
-221 Settings conflict; burst period increased to fit entire burst
Example: The function generator automatically increases the burst period to allow for the burst count or frequency.
199
-221 Settings conflict; burst count reduced
Example: The burst count is reduced to allow for the waveform frequency if the burst period is at it’s maximum.
-221 Settings conflict; trigger delay reduced to fit entire burst
Example: The trigger delay is reduced to allow the current period and burst count.
-221 Settings conflict;triggered burst not available for noise
Example: Triggered burst cannot be used with noise.
-221 Settings conflict;amplitude units changed to Vpp due to high-Z load
Example: If a high impedance load is used, dBm units cannot be used. The units are automatically set to Vpp.
-221 Settings conflict;trigger output disabled by trigger external
Example: The trigger output terminal is disabled when an external trigger source is selected.
-221 Settings conflict;trigger output connector used by FSK
Example: The trigger output terminal cannot be used in FSK mode.
-221 Settings conflict;trigger output connector used by burst gate
Example: The trigger output terminal cannot be used in gated burst mode.
-221 Settings conflict;trigger output connector used by trigger external
Example: The trigger output connector is disabled when the trigger source is set to external.
-221 Settings conflict;frequency reduced for pulse function
Example: When the function is changed to pulse, the output frequency is automatically reduced if over range.
-221 Settings conflict;frequency reduced for ramp function
Example: When the function is changed to ramp, the output frequency is automatically reduced if over range.
-221 Settings conflict;frequency made compatible with burst mode
Example: When the function is changed to burst, the output frequency is automatically adjusted if over range.
-221 Settings conflict;frequency made compatible with FM
Example: When the function is changed to FM, the frequency is automatically adjusted to suit the FM settings.
-221 Settings conflict;burst turned off by selection of other mode or modulation
Example: Burst mode is disabled when sweep or a modulation mode is enabled.
-221 Settings conflict;FSK turned off by selection of other mode or modulation
Example: FSK mode is disabled when burst, sweep or a modulation mode is enabled.
-221 Settings conflict;FM turned off by selection of other mode or modulation
Example: FM mode is disabled when burst, sweep or a modulation mode is enabled.
-221 Settings conflict;AM turned off by selection of other mode or modulation
Example: AM mode is disabled when burst, sweep or a modulation mode is enabled.
200
-221 Settings conflict; sweep turned off by selection of other mode or modulation
Example: Sweep mode is disabled when burst or a modulation mode is enabled.
-221 Settings conflict;not able to modulate this function
Example: A modulated waveform cannot be generated with dc voltage, noise or pulse waveforms.
-221 Settings conflict;not able to sweep this function
Example: A swept waveform cannot be generated with dc voltage, noise or pulse waveforms.
-221 Settings conflict;not able to burst this function
Example: A burst waveform cannot be generated with the dc voltage function.
-221 Settings conflict;not able to modulate noise, modulation turned off
Example: A waveform cannot be modulated using the noise function.
-221 Settings conflict;not able to sweep pulse, sweep turned off
Example: A waveform cannot be swept using the pulse function.
-221 Settings conflict;not able to modulate dc, modulation turned off
Example: A waveform cannot be modulated using the dc voltage function.
-221 Settings conflict;not able to sweep dc, modulation turned off
Example: A waveform cannot be swept using the dc voltage function.
-221 Settings conflict;not able to burst dc, burst turned off
Example: The burst function cannot be used with the dc voltage function.
-221 Settings conflict;not able to sweep noise, sweep turned off
Example: A waveform cannot be swept using the noise function.
-221 Settings conflict;pulse width decreased due to period
Example: The pulse width has been adjusted to suit the period settings.
-221 Settings conflict;amplitude changed due to function
Example: The amplitude (VRM / dBm) has been adjusted to suit the selected function. For the FGX-2220, a typical square wave has a much higher amplitude (5V Vrms) compared to a sine wave (~3.54) due to crest factor.
-221 Settings conflict;offset changed on exit from dc function
Example: The offset level is adjusted on exit from a DC function.
-221 Settings conflict;FM deviation cannot exceed carrier
Example: The deviation cannot be set higher than the carrier frequency
-221 Settings conflict;FM deviation exceeds max frequency
Example: If the FM deviation and carrier frequency combined exceeds the maximum frequency plus 100 kHz, the deviation is automatically adjusted.
-221 Settings conflict;frequency forced duty cycle change
Example: If the frequency is changed and the current duty cannot be supported at the new frequency, the duty will be automatically adjusted.
201
-221 Settings conflict;offset changed due to amplitude
Example: The offset is not a valid offset value, it is automatically adjusted, considering the amplitude.
|offset|≤ max amplitude – Vpp/2
-221 Settings conflict;amplitude changed due to offset
Example: The amplitude is not a valid value, it is automatically adjusted, considering the offset.
Vpp ≤ 2X (max amplitude -|offset|)
-221 Settings conflict;low level changed due to high level
Example: The low level value was set too high. The low level is set 1 mV less than the high level.
-221 Settings conflict;high level changed due to low level
Example: The high level value was set too low. The high level is set 1 mV greater than the low level.
-222 Data out of range;value clipped to upper limit
Example: The parameter was set out of range. The parameter is automatically set to the maximum value allowed.
SOURce[1|2]:FREQuency 25.1MHz.
-222 Data out of range;value clipped to lower limit
Example: The parameter was set out of range. The parameter is automatically set to the minimum value allowed.
SOURce[1|2]:FREQuency 0.1μHz.
-222 Data out of range;period; value clipped to ...
Example: If the period was set to a value out of range, it is automatically set to an upper or lower limit.
-222 Data out of range;frequency; value clipped to ...
Example: If the frequency was set to a value out of range, it is automatically set to an upper or lower limit.
-222 Data out of range;user frequency; value clipped to upper limit
Example: If the frequency is set to a value out of range for an arbitrary waveform using, SOURce[1|2]: APPL: USER or
SOURce[1|2]: FUNC:USER, it is automatically set to the upper limit.
-222 Data out of range;ramp frequency; value clipped to upper limit
Example: If the frequency is set to a value out of range for a ramp waveform using, SOURce[1|2]: APPL: RAMP or
SOURce[1|2]:FUNC:RAMP, it is automatically set to the upper limit.
-222 Data out of range;pulse frequency; value clipped to upper limit
Example: If the frequency is set to a value out of range for a pulse waveform using, SOURce[1|2]: APPL:PULS or
SOURce[1|2]:FUNC:PULS, it is automatically set to the upper limit.
-222 Data out of range;burst period; value clipped to ...
Example: If the burst period was set to a value out of range, it is automatically set to an upper or lower limit.
222 Data out of range;burst count; value clipped to ...
Example: If the burst count was set to a value out of range, it is automatically set to an upper or lower limit.
202
-222 Data out of range; burst period limited by length of burst; value clipped to upper limit
Example: The burst period must be greater than burst count divided by the frequency + 200 ns. The burst period is adjusted to satisfy these conditions. burst period > 200 ns + (burst count/burst frequency).
-222 Data out of range; burst count limited by length of burst; value clipped to lower limit
Example: The burst count must be less than burst period * the waveform frequency when the the trigger source is set to immediate (SOURce[1|2]: TRIG:SOUR IMM). The burst count is automatically set to the lower limit.
-222 Data out of range;amplitude; value clipped to ...
Example: If the amplitude was set to a value out of range, it is automatically set to an upper or lower limit.
-222 Data out of range;offset; value clipped to ...
Example: If the offset was set to a value out of range, it is automatically set to an upper or lower limit.
-222 Data out of range;frequency in burst mode; value clipped to ...
Example: If the frequency was set to a value out of range in burst mode. The burst frequency is automatically set to an upper or lower limit, taking the burst period into account.
-222 Data out of range;frequency in FM; value clipped to ...
Example: The carrier frequency is limited by the frequency deviation (SOURce[1|2]: FM:DEV). The carrier frequency is automatically adjusted to be less than or equal to the frequency deviation.
-222 Data out of range;marker confined to sweep span; value clipped to ...
Example: The marker frequency is set to a value outside the start or stop frequencies. The marker frequency is automatically adjusted to either the start or stop frequency (whichever is closer to the set value).
-222 Data out of range;FM deviation; value clipped to ...
Example: The frequency deviation is outside of range. The deviation is automatically adjusted to an upper or lower limit, depending on the frequency.
-222 Data out of range;trigger delay; value clipped to upper limit
Example: The trigger delay was set to a value out of range. The trigger delay has been adjusted to the maximum (655350 nseconds).
-222 Data out of range; trigger delay limited by length of burst; value clipped to upper limit
Example: The trigger delay and the burst cycle time combined must be less than the burst period.
203
-222 Data out of range;duty cycle; value clipped to ...
Example: The duty cycle is limited depending on the frequency.
Duty Cycle
50%
10%~90%
Frequency
> 25MHz
100 KHz ~ 1MHz
1%~99% < 100KHz
-222 Data out of range; duty cycle limited by frequency; value clipped to upper limit
Example: The duty cycle is limited depending on the frequency.
When the frequency is greater than 50 MHz, the duty cycle is automatically limited to 50%.
-313 Calibration memory lost;memory corruption detected
Indicates that a fault (check sum error) has occurred with the non-volatile memory that stores the calibration data.
-314 Save/recall memory lost;memory corruption detected
Indicates that a fault (check sum error) has occurred with the non-volatile memory that stores the save/recall files.
-315 Configuration memory lost;memory corruption detected
Indicates that a fault (check sum error) has occurred with the non-volatile memory that stores the configuration settings.
-350 Queue overflow
Indicates that the error queue is full (over 20 messages generated, and not yet read). No more messages will be stored until the queue is empty. The queue can be cleared by reading each message, using the *CLS command or restarting the function generator.
8-21-3.Query Errors
-410 Query INTERRUPTED
Indicates that a command was received but the data in the output buffer from a previous command was lost.
-420 Query UNTERMINATED
The function generator is ready to return data, however there was no data in the output buffer. For example: Using the APPLy command.
-430 Query DEADLOCKED
Indicates that a command generates more data than the output buffer can receive and the input buffer is full. The command will fin ish execution, though all the data won’t be kept.
8-21-4.Arbitrary Waveform Errors
-770 Nonvolatile arb waveform memory corruption detected
Indicates that a fault (check sum error) has occurred with the non-volatile memory that stores the arbitrary waveform data.
-781 Not enough memory to store new arb waveform; bad sectors
204
Indicates that a fault (bad sectors) has occurred with the non-volatile memory that stores the arbitrary waveform data.
Resulting in not enough memory to store arbitrary data.
-787 Not able to delete the currently selected active arb waveform
Example: The currently selected waveform is being output and cannot be deleted.
800 Block length must be even
Example: As block data (DATA:DAC VOLATILE) uses two bytes to store each data point, there must be an even number or bytes for a data block.
8-22. SCPI Status Register
The status registers are used to record and determine the status of the function generator. The function generator has a number of register groups:
Questionable Status Registers
Standard Event Status Registers
Status Byte Register
As well as the output and error queues.
Each register group is divided into three types of registers: condition registers, event registers and enable registers.
8-22-1. Register types
Condition Register The condition registers indicate the state of the function generator in real time. The condition registers are not triggered. I.e., the bits in the condition register change in real time with the instrument status. Reading a condition register will not clear it. The condition registers cannot be cleared or set.
Event Register The Event Registers indicate if an event has been triggered in the condition registers. The event registers are latched and will remain set unless the *CLS command is used. Reading an event register will not clear it.
Enable Register The Enable register determines which status event(s) are enabled. Any status events that are not enabled are ignored.
Enabled events are used to summarize the status of that register group.
205
8-22-2. FGX-2220 Status System
Questionable Status Register
Condition Event Enable
0 Volt Ovld
1
2
3
4 Over Temp
5 Loop Unlock
6
7 Ext Mod Ovld
8 Cal Error
9 External Ref
10
11
12
13
14
15
11
12
13
14
7
8
9
10
15 bit
5
6
3
4
0
1
2
<1>
<2>
<4>
<8>
<16>
<32>
<64>
<128>
<256>
<512>
<1024>
<2048>
<4096>
<8192>
<16384>
NOT USED weight
+
OR
Output Buffer
1
20
Standard Event Register
0 Operation Complete
1
2 Query Error
3 Device Error
4 Execution Error
5 Command Error
6
7 Power On
Event Enable
6
7
4
5 bit
2
3
0
1
<1>
<2>
<4>
<8>
<16>
<32>
<64>
<128> weight
+
OR
Error Queue
1
20
Status Byte Register
Condition Enable
2
3
0
1
4
5
6
7 bit
<1>
<2>
<4>
<8>
<16>
<32>
<128> weight
Summary Bit (RQS)
+
OR
206
8-22-3. Questionable Status Register
Description
Bit Summary
The Questionable Status Registers will show if any faults or errors have occurred.
Register Bit Bit Weight
Voltage overload
Over temperature
0
4
1
16
Loop unlock
Ext Mod Overload
Cal Error
5
7
8
9
32
128
256
512 External Reference
8-22-4. Standard Event Status Registers
Description
Notes
Bit Summary
Error Bits
The Standard Event Status Registers indicate when the *OPC command has been executed or whether any programming errors have occurred.
The Standard Event Status Enable register is cleared when the *ESE 0 command is used.
The Standard Event Status Event register is cleared when the
*CLS command or the *ESR? command is used.
Register
Operation complete bit
Query Error
Device Error
Bit
0
2
3
Bit Weight
1
4
8
Execution Error
Command Error
Power On
Operation complete
4
5
16
32
7 128
The operation complete bit is set when all selected pending operations are complete.
This bit is set in response to the *OPC command.
Query Error The Query Error bit is set when there is an error reading the Output Queue. This can be caused by trying to read the Output Queue when there is no data present.
Device Error The Device Dependent Error indicates a failure of the self-test, calibration, memory or other device dependent error.
207
Execution Error The Execution bit indicates an execution error has occurred.
Command
Error
Power On
The Command Error bit is set when a syntax error has occurred.
Power has been reset.
8-22-5. The Status Byte Register
Description
Notes
Bit Summary
Status Bits
The Status Byte register consolidates the status events of all the status registers. The Status Byte register can be read with the *STB? query or a serial poll and can be cleared with the
*CLS command.
Clearing the events in any of the status registers will clear the corresponding bit in the Status Byte register.
The Status byte enable register is cleared when the *SRE 0 command is used.
The Status Byte Condition register is cleared when the *CLS command is used.
Register Bit Bit Weight
Error Queue
Questionable Data
2
3
4
8
Message Available
Standard Event
4
5
16
32
Master Summary /
Request Service
Error Queue
6 64
There are error message(s) waiting in the error queue.
Questionable data
The Questionable bit is set when an
“enabled” questionable event has occurred.
Message
Available
The Message Available bit is set when there is outstanding data in the Output
Queue. Reading all messages in the output queue will clear the message available bit.
Standard Event The Event Status bit is set if an “enabled” event in the Standard Event Status Event
Register has occurred.
208
Master
Summary/
Service Request bit
The Master Summary Status is used with the *STB? query. When the *STB? query is read the MSS bit is not cleared.
The Request Service bit is cleared when it is polled during a serial poll.
8-22-6. Output Queue
Description The Output queue stores output messages in a FIFO buffer until read. If the Output Queue has data, the MAV bit in the
Status Byte Register is set.
8-22-7. Error Queue
Description The error queue is queried using the SYSTem:ERRor? command. The Error queue will set the “Error Queue“ bit in the status byte register if there are any error messages in the error queue. If the error queue is full the last message will generate a “Queue overflow” error and additional errors will not be stored. If the error queue is empty, “No error” will be returned.
Error messages are stored in the error queue in a first-in-first-out order. The errors messages are character strings that can contain up to 255 characters.
209
9. APPDENIX
9-1. FGX-2220 Specifications
The specifications apply when the function generator is powered on for at least 30 minutes under +18°C~+28°C.
FGX-2220 models
Waveforms
Repetition
Rate
Sine, Square, Ramp, Pulse, Noise, ARB
Arbitrary Functions
Sample Rate 120 MSa/s
60MHz
4k points Waveform
Length
Amplitude
Resolution
10 bits
4k points Non-Volatile
Memory
Frequency Characteristics
Range
Resolution
Accuracy
Sine
Square
Ramp
Stability
Aging
Tolerance
Output Characteristics
Amplitude Range
1uHz~25MHz
1uHz~25MHz
1MHz
1uHz
Offset
Accuracy
Resolution
Flatness
Units
Range
Accuracy
Waveform Output Impedance
±20 ppm
±1 ppm, per 1 year
≤1 mHz
1mVpp to 10 Vpp (into 50Ω)
2mVpp to 20 Vpp (open-circuit)
1mVpp to 5 Vpp (into 50Ω) for 20MHz-25MHz
2mVpp to 10 Vpp (open-circuit) for
20MHz-25MHz
±2% of setting ±1 mVpp (at 1 kHz)
1mV or 3 digits
±1% (0.1dB) ≤100kHz
±3% (0.3 dB) ≤5MHz
±5% (0.4 dB) ≤12MHz
±10%(0.9dB) ≤25MHz
(sine wave relative to 1kHz)
Vpp, Vrms, dBm
±5 Vpk ac +dc (into 50Ω)
±10Vpk ac +dc (Open circuit)
±2.5 Vpk ac +dc (into 50Ω) for 20MHz-25MHz
±5Vpk ac +dc (Open circuit) for
20MHz-25MHz
2% of setting + 10mV+ 0.5% of amplitude
50Ω typical (fixed)
> 10MΩ (output disabled)
210
Protection Short-circuit protected
Overload relay automatically disables main output
Sine wave
Characteristics
Harmonic distortion
≤-55 dBc DC ~ 200kHz,
≤-50 dBc 200kHz ~ 1MHz,
≤-35 dBc 1MHz ~ 5MHz,
≤-30 dBc 5MHz ~ 25MHz,
Square wave
Characteristics
Rise/Fall Time
≤25ns at maximum output.
(into 50
Ω load)
Overshoot 5%
Asymmetry
Variable duty
Cycle
Ramp Characteristics
Linearity
Variable
Symmetry
1% of period +5 ns
1.0% to 99.0% ≤100kHz
10% to 9
0% ≤ 1MHz
50% ≤ 25MHz
< 0.1% of peak output
0% to 100% (0.1% Resolution)
Ampl > 0.1Vpp
Ampl > 0.1Vpp
Ampl > 0.1Vpp
Ampl > 0.1Vpp
Pulse
Characteristics
Period 40ns~2000s
Pulse Width 20ns~1999.9s
Overshoot
Jitter
AM Modulation
Carrier
Waveforms
<5%
20ppm +10ns
Sine, Square, Ramp, Pulse,Arb
Sine, Square, Triangle,Upramp, Dnramp Modulating
Waveforms
Modulating
Frequency
2mHz to 20kHz (Int), DC to 20kHz (Ext)
Depth
Source
FM Modulation
Carrier
0% to 120.0%
Internal / External
Sine, Square, Ramp,
Waveforms
Modulating
Waveforms
Modulating
Sine, Square, Triangle,Upramp, Dnramp
2mHz to 20kHz (Int),DC to 20kHz (Ext)
Frequency
Peak Deviation DC to Max Frequency
Sweep
Source
Waveforms
Internal / External
Sine, Square, Ramp,
Type Linear or Logarithmic
Start/Stop Freq 1uHz to Max Frequency
211
FSK
Sweep Time 1ms to 500s
Source Internal / External/Manual
Sine, Square, Ramp,Pulse Carrier
Waveforms
Modulating
Waveforms
50% duty cycle square
2mHz to 100 kHz (INT) ,DC to 100 kHz(EXT) Modulation
Rate
Frequency
Range
Source
Carrier
1uHz to Max Frequency
Internal / External
Sine, Square, Ramp
PM
SUM
Waveforms
Modulating
Waveforms
Modulation
Frequency
Phase deviation
Source
Sine, Square, Triangle,Upramp, Dnramp
2mHz to 20kHz (Int),DC to 20kHz (Ext)
0˚ to 360˚
Carrier
Waveforms
Modulating
Internal / External
Sine, Square, Ramp,Pulse,Noise
Sine, Square, Triangle,Upramp,Dnramp
Waveforms
Modulation 2mHz to 20kHz (Int),DC to 20kHz (Ext)
Frequency
SUM Depth 0% to 100.0%
Source Internal / External
External Trigger Input
Type
Input Level
Slope
For FSK, Burst, Sweep
TTL Compatibility
Rising or Falling(Selectable)
Pulse Width >100ns
Input Impedance 10k Ω，DC coupled
External Modulation Input
Type
Voltage Range
Input Impedance
Frequency
For AM, FM, PM, SUM
±5V full scale
10kΩ
DC to 20kHz
Trigger Output
Type
Level
For Burst, Sweep, Arb
TTL Compatible into 50 Ω
>450ns Pulse Width
Maximum Rate 1MHz
Fan-out
Impedance
≥4 TTL Load
50
Ω Typical
212
Dual Channel Function
Phase
Track
Coupling
CH1
-
180˚ ~180˚
-
CH2
180˚ ~ 180˚
Synchronize phase Synchronize phase
CH2=CH1
Frequency(Ratio or
Difference)
Amplitude & DC
Offset
√
CH1=CH2
Frequency(Ratio or
Difference)
Amplitude & DC
Offset
√
Burst
Dsolink
Trigger Delay
Waveforms
Frequency
Sine, Square, Ramp
1uHz~25MHz
Burst Count 1 to 65535 cycles or Infinite
Start/Stop Phase -360 to +360
Internal Period
Gate Source
1ms to 500s
External Trigger
Trigger Source Single, External or Internal Rate
N-Cycle, Infinite 0s to 655350ns
Frequency Counter
Range
Accuracy
Time Base
5Hz to 150MHz
Time Base accuracy±1count
±20ppm (23˚C ±5˚C) after 30 minutes warm up
The maximum resolution is:
Save/Recall
Interface
Display
Resolution
100nHz for 1Hz, 0.1Hz for 100MHz.
Input Impedance 1kΩ/1pf
Sensitivity 35mVrms ~ 30Vms (5Hz to 150MHz)
10 Groups of Setting Memories
USB (Host&Device)
TFT (320 x 240 dots)
General Specifications
Power Source AC100~240V, 50~60Hz
Power 25 W (Max)
Consumption
Operating
Environment
Temperature to satisfy the specification :
18 ~ 28˚C
Operating temperature :0 ~ 40˚C
Relative Humidity: <
80%, 0 ~ 40˚C
Installation category： CAT II
Operating
Altitude
Storage
Temperature
Dimensions
Weight
Accessories
-
2000 Meters
10~70˚C, Humidity: ≤70%
266(W) x 107(H) x 293(D) mm
Approx. 2.5kg
GTL-101× 2
CD (user manual + software) ×1
Power cord×1
213
9-2. External Dimensions Figure
214
9-3. Usage Notes for FGX-2220
At the time of change of the setting by hand operation and external controls in this instrument, the waiting time in the following table until the next control and the next operation is enabled is required.
If you want a continuous set and query, please put the weights.
Panel
Preset
Recall
Waveform
ARB
FREQ
AMPL
Offset
OUTPUT
MOD
Sweep
Burst
INT/EXT
Other
Command
SOUR[1|2]:APPL
SOUR[1|2]:FUNC
SOUR[1|2]:FREQ
SOUR[1|2]:AMP
SOUR[1|2]:DCO
OUTP[1|2]
SOUR[1|2]:AM
SOUR[1|2]:FM
SOUR[1|2]:FSK
SOUR[1|2]:PM
SOUR[1|2]:SUM
SOUR[1|2]:SWE
SOUR[1|2]:BURS
SOUR[1|2]: **:SOUR
Setting Commands
Setting
Apply
Function
Frequency
Amplitude
DC Offset
OUTPUT ON/OFF
Modulation
Sweep mode
Burst mode
Input modulation
Other setting
Wait time(typ)
1500ms
500ms
200ms
100ms
100ms
100ms
1000ms
1000ms
1000ms
200ms
100ms
Common Commands SCPI command 0ms
215
7F Towa Fudosan Shin Yokohama Bldg.
2-18-7, Shin Yokohama, Kohoku-ku,Yokohama, Kanagawa, 222-0033 Japan http://www.texio.co.jp/
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