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Tektronix AFG2021 Скачать руководство пользователя страница 100

Application examples

Motor speed control by pulse-width modulation

Pulse-width modulation is used for controlling the speed of a DC motor or the
luminance of an LED (Light Emitting Diode). Use the instrument PWM function
to control the DC motor speed.

1.

Connect the
instrument output
and a DUT using
a BNC-to-alligator
clip adapter.

2.

Push the
front-panel Pulse
button and the
Modulation button,
and then select
PWM as a
modulation type.
Set the frequency
to approximately
100 kHz.

3.

Connect the output
to an oscilloscope.
Con

fi

rm that

a pulse-width
modulation
waveform is
displayed on
the oscilloscope
screen.
Select Pulse Duty
and change the
duty rate. Observe
that the motor
speed changes if
you change the
duty rate.

82

AFG2021 Quick Start User Manual

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Содержание AFG2021

Страница 1: ...xx AFG2021 Arbitrary Function Generator ZZZ Quick Start User Manual P071292600 071 2926 00 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com ...

Страница 2: ......

Страница 3: ...AFG2021 Arbitrary Function Generator ZZZ Quick Start User Manual xx ...

Страница 4: ...laws and international treaty provisions Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supersedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tektronix Inc Additional trademark statements can be added here ...

Страница 5: ...stomer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel ...

Страница 6: ......

Страница 7: ...rform instrument self test and self calibration 7 Select a local language 9 Protect your instrument from misuse 9 Floating ground 11 Protect your DUT 12 Update your instrument firmware 13 Connect to a network 16 Equivalent output circuits 21 Instrument front panel interface and rear panel 22 Front panel overview 22 Parts of the screen interface 23 Default setup 24 Select waveform 26 Select run mod...

Страница 8: ...m 50 Modulate a waveform 53 Trigger out 57 Set up load impedance 59 Add noise 60 Reference clock 62 Synchronous operation 63 USB memory 64 Utility menu 65 Save recall instrument setup 67 Save a screen image 69 Security menu 70 ArbExpress 73 Application examples 81 Measurement of filter characteristics 81 Motor speed control by pulse width modulation 82 Carrier null frequency modulation 83 Index ii...

Страница 9: ...List of Figures Figure 1 Instrument dimensions 4 Figure 2 Fuse and fuse adapter 10 AFG2021 Quick Start User Manual iii ...

Страница 10: ...ly grounded Observe all terminal ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product Do not apply a potential to any terminal including the common terminal that exceeds the maximum rating of that terminal Power disconnect The power cord disconnects the product from ...

Страница 11: ...s that could result in damage to this product or other property Symbols and terms on the product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product The following symbol s may appear on ...

Страница 12: ... 3 2002 RF electromagnetic field immunity IEC 61000 4 4 2004 Electrical fast transient burst immunity IEC 61000 4 5 2001 Power line surge immunity IEC 61000 4 6 2003 Conducted RF immunity IEC 61000 4 11 2004 Voltage dips and interruptions immunity EN 61000 3 2 2006 AC power line harmonic emissions EN 61000 3 3 1995 Voltage changes fluctuations and flicker European contact Tektronix UK Ltd Western ...

Страница 13: ...Radiocommunications Act per the following standard in accordance with ACMA CISPR 11 2003 Radiated and Conducted Emissions Group 1 Class A in accordance with EN 61326 1 2006 Australia New Zealand contact Baker McKenzie Level 27 AMP Centre 50 Bridge Street Sydney NSW 2000 Australia AFG2021 Quick Start User Manual vii ...

Страница 14: ...d occur in the environment around and within a product Typically the internal environment inside a product is considered to be the same as the external Products should be used only in the environment for which they are rated Pollution Degree 1 No pollution or only dry nonconductive pollution occurs Products in this category are generally encapsulated hermetically sealed or located in clean rooms P...

Страница 15: ... Measurement Category IV For measurements performed at the source of low voltage installation Measurement Category III For measurements performed in the building installation Measurement Category II For measurements performed on circuits directly connected to the low voltage installation Measurement Category I For measurements performed on circuits not directly connected to MAINS Overvoltage Categ...

Страница 16: ...ces into the environment and to reduce the use of natural resources we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately This symbol indicates that this product complies with the applicable European Union requirements according to Directives 2002 96 EC and 2006 66 EC on waste electrical and electronic equ...

Страница 17: ... Location Quick Start User Manual Unpacking Installation Tutorials Operation and Overviews Built in Help UI Help and Operation Programmer Manual Menu Structures User Interface and Programming Information Service Manual Self service and Performance test Technical Reference Specifications and performance verification procedures ArbExpress Software CD Waveform creation Import waveforms from oscillosc...

Страница 18: ...ce The soft keys along the right side of the display are called bezel buttons in this manual In other documents they may also be called option buttons or side menu buttons xii AFG2021 Quick Start User Manual ...

Страница 19: ...play Color TFT LCD Interface USB GPIB AFG2021with option GL only LAN AFG2021with option GL only Synchronous operation Available Ground isolation Available Context sensitive Help system Instrument help available in multiple languages ArbExpress Software Waveform creation and editing tool software Before installation Inspect the instrument carton for external damage If the carton is damaged notify t...

Страница 20: ...1 2933 xx Korean Option L9 1 071 2934 xx Russian Option L10 1 071 2935 xx No printed manual Option L99 AFG2021 Documentation CD containing the following PDF documents 063 4441 xx AFG2021 Arbitrary Function Generators Programmer Manual 077 0587 xx AFG2021 Arbitrary Function Generators Service Manual 077 0586 xx AFG2021 Arbitrary Function Generators Specifications and Performance Verification Manual...

Страница 21: ...on Tektronix part number 50 Ω BNC cable double shielded 91 cm 36 in 012 0482 XX 50 Ω BNC cable double shielded 250 cm 98 in 012 1256 XX 50 Ω BNC terminator 011 0049 XX GPIB interface cable double shielded 200 cm 79 in 012 0991 XX Rackmount kit RMU2U Fuse adapter 013 0345 XX 0 125 fuse set contains three fuses 159 0454 XX NOTE To ensure the EMC compliance listed in the Specifications connect only h...

Страница 22: ...es 50 mm 2 in Rear 50 mm 2 in Temperature Before operating the instrument ensure the ambient temperature is between 0 C to 50 C 32 F to 122 F CAUTION To ensure proper cooling keep both sides of the instrument clear of obstructions Power supply requirements Source voltage and frequency 100 V to 240 V 50 Hz to 60 Hz or 115 V 400 Hz Power Consumption 60 W WARNING To reduce the risk of fire and shock ...

Страница 23: ...rument and turn it on do the following 1 Insert the AC power cord into the power receptacle on the rear panel and the other end into a properly grounded power outlet 2 Push the front panel power button to power on the instrument NOTE Wait until the front panel display shows that the instrument has passed all power on self tests before using the instrument Power off To turn the instrument off do th...

Страница 24: ...ngs from the Utility menu using the following procedure 1 Push the front panel Utility button 2 Push the System bezel button 3 Push the Power On bezel button to select from the following the power on settings Default restores the default settings when the instrument is powered on Last restores the same settings as when the instrument was last powered off 6 AFG2021 Quick Start User Manual ...

Страница 25: ...zel button Perform instrument self test and self calibration The instrument performs a limited set of hardware tests at power on You can also perform the following manual diagnostics and or self calibration using the Utility menu NOTE Disconnect all the cables from the instrument before performing a self test or a self calibration Diagnostics Self test Perform the self test to verify that your ins...

Страница 26: ...elf calibration data stored in the internal memory may be lost 1 Push the front panel Utility button 2 Push the more bezel button 3 Push the Diagnostics Calibration bezel button 4 Do one of the following NOTE Before executing self calibration ensure that the ambient temperature is between 20 C and 30 C 68 F to 86 F and allow a 20 minute warm up period Execute Diagnostics Push this bezel button to ...

Страница 27: ...guage bezel button 3 Select the desired language You can select from English French German Japanese Korean Simplified Chinese Traditional Chinese and Russian NOTE If you selected a language option with the purchase of the instrument you should have received a front panel overlay Protect your instrument from misuse Check input and output connectors When connecting a cable be sure to distinguish the...

Страница 28: ...ltages to Output connectors The instrument may be damaged CAUTION Do not apply excessive inputs over 5 V to Trigger Input connector The instrument may be damaged Use fuse adapter The instrument will be damaged if a large DC or AC voltage is applied to the output or input connectors To protect the output circuits a fuse adapter is provided as an optional accessory When the instrument is used by stu...

Страница 29: ...cuit will be activated to protect the circuits However higher voltage may cause the internal circuits in the instrument to be damaged When a potential voltage exists between the chassis ground and common ground a short circuit from output to ground causes the instrument internal fuse to open and the output is stopped If the fuse opens you need to contact your local Tektronix Service Support When a...

Страница 30: ...bezel button 4 Notice that in this example High Limit is set to 5 000 V and Low Limit is set to 5 000 V 5 Use the numeric keys or the general purpose knob to set the High Limit to 50 mV and the Low Limit to 50 mV 6 Push the front panel Sine button to display the waveform parameter Confirm that High and Low voltage levels were changed NOTE You cannot enter any values greater than 50 mV for High lev...

Страница 31: ...ate process NOTE The screen images of the following procedure are provided as an example The actual screen display may be different depending on your instrument configuration 1 Push the front panel Utility button to display the Utility menu and view the currently installed firmware version located at the bottom of the display screen 2 From a PC check if Tektronix offers a newer firmware version Do...

Страница 32: ... is disabled NOTE If Access Protection is on the Firmware Update bezel button is disabled 6 Select the downloaded firmware file by rotating the general purpose knob and then push the Execute bezel button NOTE The firmware file name is as follows tekafgtb 1 x x tfb 7 The instrument asks you Are you sure you want to update firmware Select OK 14 AFG2021 Quick Start User Manual ...

Страница 33: ...Do not remove the USB memory during the update process CAUTION If you accidentally removed the USB memory during the update process do not power off the instrument Repeat the installation process from step 3 9 Wait until the instrument displays a message saying that the operation is complete 10 Push OK CAUTION If the operation complete message is not displayed do not power off the instrument Repea...

Страница 34: ...ernet or GPIB interface NOTE The AFG2021 with option GL provides USB GPIB and LAN ports The AFG2021 base model provides a USB port only USB interface The USB interface on the rear panel requires no front panel or bezel menu operations to set up Use a USB cable to connect your instrument to a PC Ethernet setup NOTE Ethernet setup is only available with the AFG2021 with option GL which has a LAN por...

Страница 35: ...lity button 3 Push the I O Interface bezel button and then the Ethernet bezel button 4 Select Off or On for the DHCP when the Ethernet Network Settings menu is displayed NOTE By selecting DHCP On the instrument can set its network address automatically through DHCP AFG2021 Quick Start User Manual 17 ...

Страница 36: ...lect DHCP Off 6 Push the IP Address bezel button to enter an IP address You need to contact your network administrator to get the IP address to use 7 Push the Subnet Mask bezel button to enter a Subnet Mask Ask your network administrator whether a subnet mask is required 8 Push the Default Gateway bezel button to enter a gateway address Ask your network administrator for the gateway address 18 AFG...

Страница 37: ...only available with the AFG2021 with option GL which has a GPIB port To set the instrument GPIB interface follow these steps 1 Connect a GPIB cable to the rear panel GPIB port 2 Push the front panel Utility button AFG2021 Quick Start User Manual 19 ...

Страница 38: ...a unique GPIB address The GPIB address must be from 0 to 30 5 Push the Configuration bezel button to toggle the instrument bus communications on and off Talk Listen Select this mode to remotely control the instrument from an external host computer Off Bus Select this mode to disconnect the instrument from the GPIB bus NOTE Refer to the AFG2021 Arbitrary Function Generator Programmer Manual for inf...

Страница 39: ...n the 50 Ω load impedance is used Amplitude and offset are affected when you change the load impedance The maximum and minimum levels do not exceed 10 V respectively A change to the load impedance L will affect the output window maximum and minimum levels for a sine waveform as follows L 50 Ω 5 V to 5 V 10 Vp p L High Z 10 V to 10 V 20 Vp p AFG2021 Quick Start User Manual 21 ...

Страница 40: ...to previous menu 3 Run mode buttons 4 Help Utility and Save Recall buttons 5 Numeric keypad cancel action delete backspace and Enter buttons 6 General purpose knob 7 Arrow buttons allow you to select a specific number on the display screen when you are changing amplitude phase frequency or other such values 8 Channel On Off and Manual Trigger buttons 9 Trigger input connector 10 Trigger output con...

Страница 41: ...lso refer to the bezel buttons as option buttons side menu buttons or soft keys 2 Graph waveform display area This part of the main display area shows the signal as a graph or waveform 3 Level meter The top portion of the indicator shows the high limit value the bottom portion of the indicator shows the low limit value and the indicator itself shows the currently selected level 4 Parameter display...

Страница 42: ...ows 1 Push the front panel Save Recall button 2 Push the Setup bezel button to select Recall 3 Push the Default bezel button 4 Select one of the following OK to recall the default settings the instrument will display a 1 MHz frequency 1 Vp p amplitude sine waveform as the default setup Cancel to cancel the recall and return to the previous menu 24 AFG2021 Quick Start User Manual ...

Страница 43: ...00 kHz Sweep stop frequency 100 000 MHz Sweep time 10 ms Sweep hold time 0 ms Sweep return time 1 ms Sweep type Linear Sweep mode Repeat Sweep source Internal Trigger slope Positive Trigger interval 1 000 ms Modulation Modulation waveform 10 00 kHz Sine except FSK 50 00 Hz Square FSK AM depth 50 00 FM deviation 1 000 000 MHz PM deviation 90 0 FSK hop frequency 1 000 000 MHz FSK rate 50 00 Hz PWM d...

Страница 44: ...otection Select waveform The instrument can provide 12 standard waveforms Sine Square Ramp Pulse Sin x x Noise DC Gaussian Lorentz Exponential Rise Exponential Decay and Haversine The instrument can also provide user defined arbitrary waveforms You can create edit and save your custom waveforms You can also create modulated waveforms using the Run Mode Modulation menus The following table shows th...

Страница 45: ...xponential Decay or Haversine Vp p is defined as twice the value of 0 to peak value To select an output waveform follow these steps 1 Push the front panel Sine button to select sine waveform 2 Push the front panel Continuous button to select a continuous sine waveform 3 Select one of the four standard waveforms by pushing on of the front panel function buttons 4 Push the Arb button to select an ar...

Страница 46: ...ront panel interface and rear panel Other available waveforms The following are examples of the other waveform types available in the More Waveform menu under the More button menu 28 AFG2021 Quick Start User Manual ...

Страница 47: ...ar panel Select run mode Push one of the four Run Mode buttons to select the instrument signal output method 1 The default Run Mode is Continuous 2 To select a modulated waveform push the Modulation button AFG2021 Quick Start User Manual 29 ...

Страница 48: ... you turn on your instrument the default output signal is a 1 MHz sine waveform with an amplitude of 1 Vp p In the following example you can change the frequency and amplitude of the original output signal 1 Push the front panel Save Recall button 2 Push the Setup bezel button to select Recall 3 Push the Default bezel button and then push the OK bezel button to display the default output signal 30...

Страница 49: ... 7 To change period push the Period bezel button to select the Period parameter 8 Use the numeric keypad or the general purpose knob to set the period value 9 To change the amplitude first push the front panel button to return to the top menu and then press the Amplitude Level Menu bezel button 10 Press the Amplitude bezel button 11 Use the numeric keypad or the general purpose knob to set the amp...

Страница 50: ...ameter 15 Use the numeric keypad or the general purpose knob to set the value You can change the values of Phase and Offset in the same way Unit conversions The following conversion table shows the relationship between Vp p Vrms and dBm Vp p Vrms dBm 10 00 Vp p 3 54 Vrms 23 98 dBm 2 828 Vp p 1 00 Vrms 13 01 dBm 2 000 Vp p 707 mVrms 10 00 dBm 1 414 Vp p 500 mVrms 6 99 dBm 632 mVp p 224 mVrms 0 00 d...

Страница 51: ...t This is where you attached an appropriate power cord to supply power to the instrument 2 Chassis ground screw This screw is used to ground the instrument Use a unified coarse screw 6 32 6 35 mm length or less 3 LAN port This port can be used to connect the instrument to a network Connect a 10BASE T or 100BASE T cable here NOTE This port is only available for the AFG2021 with option GL 4 USB type...

Страница 52: ...DULATION INPUT connector This is a BNC connector for the external modulation input It can be used to input a modulated signals 8 Security slot This slot allows you to use a standard laptop computer security cable to secure your instrument to your location 9 Fan ventilation vent This is the ventilation opening for the fan 34 AFG2021 Quick Start User Manual ...

Страница 53: ... Channel Output of the instrument to the oscilloscope input with a BNC cable 3 Select a waveform 4 Enable the signal output 5 Observe a waveform displayed on the oscilloscope screen 6 Use the front panel shortcut buttons on the instrument to select a waveform parameter 7 Select Frequency as a parameter to be changed 8 Change the frequency value using the numeric keys 9 Change the waveform paramete...

Страница 54: ...n push the front panel power button to turn on the instrument 2 Connect a BNC cable from the Channel Output of the arbitrary function generator to an oscilloscope input connector 3 Push the front panel Sine button 4 Push the front panel Continuous button to select a continuous sine waveform 5 Push the front panel Channel On Off button to enable the output The button should be lit 36 AFG2021 Quick ...

Страница 55: ...uency bezel button You can now change the frequency value using the numeric keypad or the general knob For example if you enter a value 2 using the keypad the bezel menus will automatically change to Units After entering the frequency value push the Units bezel button or the front panel Enter button to complete the entry You can change the Amplitude Phase and Offset values in the same way NOTE Whe...

Страница 56: ...esponding to the highlighted link 4 Push the Index bezel button to display an Index page 5 Push the Exit bezel button or any front panel button to remove the Help text from the screen and return to the graphic or parameter display Ways to access and navigate the instrument help system Push the Help button to display information topic about the last menu displayed on the screen Turn the general pur...

Страница 57: ...on and adjust the parameter as needed 4 Push the Leading Edge bezel button and adjust the parameter as needed then push the Trailing Edge bezel button and adjust the parameter as needed 5 You can set the lead delay by pushing the front panel button and then pushing the Frequency Period Delay Menu and adjusting the parameter as needed Pulse waveform formulas The following formulas are applied to le...

Страница 58: ...lse Temp1 0 8 2 0 width tEdge Temp2 period leadDelay width 0 8 2 0 tEdge Temp3 0 625 period Maximum trailing edge time This value is the minimum of the three in each instance If runMode Continuous Temp1 0 8 2 0 width lEdge Temp2 period width 0 8 2 0 lEdge Temp3 0 625 period Else Temp1 0 8 2 0 width lEdge Temp2 period leadDelay width 0 8 2 0 lEdge Temp3 0 625 period 40 AFG2021 Quick Start User Manu...

Страница 59: ... lock icon will appear next to locked files 3 Push the Save bezel button to save the setup to internal memory 4 If you want to save a setup to USB memory you must first insert a USB memory device into the port select Memory USB from the bezel menu and then push Save A file with the extension TFS is saved You can name the files 5 You can also recall waveforms by selecting Setup Recall from the beze...

Страница 60: ... list of waveform files in the internal memory or USB memory Select Internal You can specify a file from User 1 through User 4 or Edit Memory Use the front panel general purpose knob to scroll the files then select a file and push OK 4 When USB is selected the instrument lists a directory of the folders and files on the USB memory You can select a folder or file using the knob to scroll up and dow...

Страница 61: ...orm points to be edited 4 Select New to write a standard waveform to Edit memory The written waveform has the number of points specified by Number of Points One of five waveform types Sine Square Pulse Ramp and Noise can be selected 5 Select Operation to display the Operations submenu 6 Select Read from to write a standard waveform to Edit memory The written waveform has the number of points speci...

Страница 62: ...he Data Point edit submenu Push Cut to display the Cut Data Points submenu 8 Select Paste at Beginning to append a waveform at the beginning of the edit waveform Select Paste at End to append a waveform at the end of the edit waveform 9 Select Write to to display a submenu to write waveform data to 44 AFG2021 Quick Start User Manual ...

Страница 63: ... this waveform to User1 3 Next create a 500 point ramp waveform 4 Select Operation and select Line Do the following line edit X1 1 Y1 8191 X2 250 Y2 16382 Push Execute Once again select Line from Operation and perform the following line edit X1 251 Y1 16382 X2 500 Y2 8191 5 Push Execute Save this waveform to User2 6 Next paste a waveform Push Read from and select User1 7 Push Paste at Beginning Se...

Страница 64: ...eration and select Data 4 Perform the following data point edit X 250 Y 8191 X 251 Y 8191 X 750 Y 8191 X 751 Y 8191 5 After each data edit push Execute to implement the edit operation Save this waveform to User3 6 This is an example of an oscilloscope screen for the User3 waveform NOTE If you edit an arbitrary waveform data while the instrument generates a waveform from Edit Memory the edited data...

Страница 65: ...h as sine square ramp and pulse or arbitrary waveforms The instrument allows you to use the following two types of burst modes Triggered burst mode A specified number burst count of waveform cycles are output when the instrument receives a trigger input from the internal trigger source an external trigger source a remote command or the Manual Trigger button Gated burst mode The instrument outputs ...

Страница 66: ... mode is enabled To generate double pulse set the burst count N Cycles to 2 by pushing the N Cycles bezel button and then pushing the 2 button 3 This is an example of double pulse 4 This waveform is a trigger output signal To generate a gated burst waveform In the gated burst mode the output is enabled or disabled based on the internal gate signal or an external signal applied to the front panel T...

Страница 67: ...sh the front panel Burst button to display the burst menu 2 Select Gate 3 This is a sample oscilloscope screen The top waveform is a trigger output signal 4 This is a gated waveform sample AFG2021 Quick Start User Manual 49 ...

Страница 68: ... a waveform The Sweep outputs a waveform with the output signal frequency varying linearly or logarithmically Stop frequency Sweep time Return time Center frequency Frequency span Hold time 50 AFG2021 Quick Start User Manual ...

Страница 69: ...rom Stop Frequency to Start Frequency Push the more button to display the second sweep menu NOTE If you want to return to the Sweep menu after selecting other menus push the front panel Sweep button again 3 In this page you can set the parameters for center frequency frequency span hold time and select the sweep type Hold time represents the amount of time that the frequency must remain stable aft...

Страница 70: ...t signal Sweep frequency facts If a start frequency is lower than a stop frequency the instrument sweeps from the low frequency to the high frequency If a start frequency is higher than a stop frequency the instrument sweeps from the high frequency to the low frequency Once the sweep is selected the frequency is swept from the sweep start to the sweep stop frequencies 52 AFG2021 Quick Start User M...

Страница 71: ...front panel Modulation button In this example use sine waveform as an output waveform carrier waveform NOTE You cannot select Pulse Noise or DC as a carrier waveform 2 Push the top bezel button to display the modulation selection menu Select AM as the modulation type AFG2021 Quick Start User Manual 53 ...

Страница 72: ...ce and set the modulation depth to 120 the output will be at the maximum amplitude when a 1 Vp p signal is applied to the rear panel EXT MODULATION INPUT connector You can select a modulation shape from the internal memory or USB memory You cannot select Pulse Noise or DC as a carrier waveform The following equations show the output amplitude of AM FM and PM modulation in this example sine wavefor...

Страница 73: ...frequencies the carrier frequency and Hop frequency The AFG2021 generates a phase continuous FSK signal 1 Follow the steps described in the To output an AM waveform procedure to display the modulation type selection submenu See page 53 In this example select FSK as the modulation type 2 The FSK parameter setting screen is displayed Select Internal or External as FSK source 3 If you select Internal...

Страница 74: ...arameter setting screen 3 Push the front panel Modulation button to display the PWM parameter setting screen Select the PWM source 4 Set the PWM frequency 5 Select the Modulation Shape 6 Set the Deviation pulse width deviation NOTE Refer to the Motor speed control by pulse width modulation for an application example of pulse width modulation See page 82 56 AFG2021 Quick Start User Manual ...

Страница 75: ... Trigger Output connector provides the trigger signal for oscilloscopes 2 Continuous mode The trigger output is a square waveform and the rising edge at the start of each waveform period When an output frequency is higher than 4 9 MHz some restrictions are applied See the Quick Tips below 3 Sweep mode When the Repeat or Trigger sweep mode and internal trigger source are selected the trigger output...

Страница 76: ...igger source is selected the trigger output is high during the time the trigger input is high When a setting frequency of an output waveform is higher than 4 9 MHz a divided frequency that is lower than 4 9 MHz is output from the Trigger Out See the table below Set frequency of output waveform MHz Trigger output frequency MHz 4 900 000 000 00 Fs 4 900 000 000 01 to 14 700 000 000 0 Fs 3 14 700 000...

Страница 77: ...d high low level settings To set the load impedance use the Output Menu 1 From the top menu push the Output Menu bezel button 2 Push Load Impedance to display the Load Impedance submenu 3 To adjust the load impedance select Load 4 You can set the load impedance to any value from 1 Ω to 10 kΩ 5 When the load impedance is set to other than 50 Ω the set value is displayed in the output status NOTE Wh...

Страница 78: ...ut Menu bezel button 3 Push the Noise bezel button 4 The Noise Add submenu is displayed Push Noise Add to select On To adjust the noise level push Noise Level Use the general purpose knob or the numeric keypad to enter the value NOTE When you set Noise Add to On the amplitude of output signal is reduced to 50 60 AFG2021 Quick Start User Manual ...

Страница 79: ...dition the amplitude of the output signal is automatically halved 7 Push the front panel Channel On Off button so that the output is on and the LED is lit The Output Status is changed from output status message will change to Noise NOTE An internal noise generator digital is used to add noise AFG2021 Quick Start User Manual 61 ...

Страница 80: ...ed by this signal The following procedure shows you how to set up the instrument to use an external signal Use of the internal signal does not require a connection to the rear panel input 1 Connect a reference signal from a signal source to the Ext Ref Input connector on the rear panel of the AFG2021 2 Push the front panel Utility button 3 Push the System bezel button 4 Push the Clock Ref bezel bu...

Страница 81: ...rument master to the Trigger Input of another instrument slave The master unit sends a trigger signal to the slave unit 2 Connect the rear panel Ext Ref Input master to a 10 MHz signal from another source 3 Connect the rear panel Ext Ref Input slave to the 10 MHz signal source This signal source controls the clock of the master and slave units 4 Push the front panel Utility button and then push th...

Страница 82: ...are Save a screen image See page 69 Save a screen image CAUTION When you a USB memory device to the instrument a caution message appears on the screen Do not remove the USB memory device until the message disappears If you remove the USB memory device while this caution message is displayed it may cause damage to the instrument USB connector requirements This instrument supports a USB memory with ...

Страница 83: ...and step 7 5 Push the Status bezel button to display the instrument status 6 Push the System bezel button to display the System submenu For Trigger Out information See page 57 7 For Clock Reference information See page 62 8 You can select the instrument power on settings 9 Executing the Secure function will erase all data except Mac Address calibration data and the instrument serial number 10 Push...

Страница 84: ...ton to display the Backup Restore submenu In this menu you can back up a waveform data from internal memory to USB memory or restore a waveform data from USB memory to internal memory 17 Return to the Utility main menu Push the more bezel button to display the third page On this page you can execute the instrument firmware update See page 13 18 Security Menu See page 70 66 AFG2021 Quick Start User...

Страница 85: ...etups from a file in the internal memory or in a USB memory device 1 Push the front panel Save Recall button to display the Save Menu 2 To specify a memory location select Internal or USB 3 Use the general purpose knob to scroll files Push Save to save a setting to Internal memory NOTE A Save As menu option appears when you are saving to USB memory 4 You can save a setup as a new file if you speci...

Страница 86: ...l bezel button NOTE Output state is Off by default after reading a setup file Lock setup files You can lock a setup file to avoid accidental overwrite When a memory location is locked a lock key icon will appear on the screen To lock or unlock a setup file push the Lock Unlock bezel button located on the second page of the Save Recall menu Erase a file To erase a file push the Erase bezel button l...

Страница 87: ...wo arrow keys underneath the general purpose knob on the front panel 3 A message appears on the screen indicating that the screen image was saved NOTE Image files are saved in a folder named TEK in the USB memory device 4 Push OK NOTE Image files are saved as BMP format The instrument gives all files created by the instrument the default name TEK00nnn BMP where the nnn are placeholders for an auto...

Страница 88: ... panel Utility button to display the Utility menu and then push the more bezel button twice 2 Select Security Menu 3 Select Access Protection to display the password input page 4 Enter your password Use the general purpose knob to select the characters and push the Enter Character bezel button after each selection As you enter the characters of your password they are displayed as a series of aster...

Страница 89: ...enu 2 If the Access Protection is set to On turn it off using the Access Protection menu Otherwise skip to step 3 Select Change Password to display the password input page 4 Enter your current password Use the general purpose knob to select the characters and push the Enter Character bezel button after each selection Then select OK to display the New Password input page AFG2021 Quick Start User Ma...

Страница 90: ...ur new password they are displayed on the screen Check carefully to ensure you are entering the desired characters 6 Select OK to activate the new password NOTE A password must have at least four characters and not more than12 characters NOTE To activate or deactivate the access protection you must enter the password you set If you forget the password you must return the instrument to Tektronix to...

Страница 91: ...mework 1 1 Redistributable 800 x 600 Display resolution TekVISA Version 3 3 4 6 and above Create waveforms from standard waveform templates Modify and transfer waveforms to perform DUT level tests Directly import waveforms from Tektronix oscilloscopes Send waveforms to AWG AFG instruments directly from ArbExpress or MATLAB Math operations on waveforms NOTE You can use ArbExpress to transfer wavefo...

Страница 92: ... Shortcut view occupies the left part of the display Use the Shortcut view to quickly access various functions provided by the application Refer to the ArbExpress online help for more information 4 Status bar The status bar located below the waveform and marker display shows information about the application and the waveform 5 Waveform display area When you create or open a waveform it will be dis...

Страница 93: ...024 points waveform length You can change the number of points using Properties from the Waveform menu 3 Use the Standard Waveform dialog box to create any of the standard waveforms that are available Use Settings to select a desired waveform and instrument type 4 Use Vertical to set the waveform vertical parameters 5 Use Horizontal to set the waveform horizontal parameters 6 Click Preview to view...

Страница 94: ...waveform The application provides a set of sample equations that you can directly use or modify 8 Use Command List to select the commands functions units and operations 9 Use Preview to view the waveform after the equation is compiled 76 AFG2021 Quick Start User Manual ...

Страница 95: ...played in the Resultant Waveform pane This is an example of adding noise to a square waveform 13 You can remotely control Tektronix AWG AFG instruments using ArbExpress From the Communication menu select AWG AFG File Transfer Control to display the dialog box 14 Connected instruments are listed on the Arb List 15 The Instrument Control pane appears only when an instrument is connected otherwise it...

Страница 96: ...o waveform data that is compatible with the instrument 1 Create a CSV file to use with ArbExpress 2 Enter point or time to this column 3 Enter data to this column When you open a CSV file a dialog box may appear to confirm the CSV file format 4 This is an example of ArbExpress waveform display area after recalling CSV data 78 AFG2021 Quick Start User Manual ...

Страница 97: ...waveform data to a USB memory and load the waveform in the arbitrary function generator 6 The AFG2021 outputs recalled waveform data This is an example of the oscilloscope screen 1 Fs represents setting frequency of output waveform AFG2021 Quick Start User Manual 79 ...

Страница 98: ...Operating Basics 80 AFG2021 Quick Start User Manual ...

Страница 99: ...nt to the CH1 input of an oscilloscope with a BNC cable 2 Connect a 50 Ω filter between the Channel Output and CH1 input of the oscilloscope 3 Connect the Trigger Output of the instrument and the external trigger input connector of an oscilloscope Set the oscilloscope input impedance to 50 Ω 4 Select Sweep from Run Mode of the instrument and set the start frequency stop frequency and sweep time so...

Страница 100: ...t output and a DUT using a BNC to alligator clip adapter 2 Push the front panel Pulse button and the Modulation button and then select PWM as a modulation type Set the frequency to approximately 100 kHz 3 Connect the output to an oscilloscope Confirm that a pulse width modulation waveform is displayed on the oscilloscope screen Select Pulse Duty and change the duty rate Observe that the motor spee...

Страница 101: ...ect Sine as an output waveform and then select FM as the modulation type 2 Set the waveform parameters as follows Carrier frequency 1 MHz Modulation frequency 2 kHz 3 Change Deviation Set the deviation to 4 8096 kHz It makes the carrier waveform null Confirm that the carrier null can be observed on the spectrum analyzer AFG2021 Quick Start User Manual 83 ...

Страница 102: ...Application examples 84 AFG2021 Quick Start User Manual ...

Страница 103: ...fault button 7 Default settings 25 Default setup 24 Default Power on settings 6 E Edit menu 43 Edit menu 38 Recalling waveform data 43 Editing arbitrary waveforms example 1 45 example 2 46 Environmental requirements 4 Equation Editor ArbExpress 76 Equivalent output circuits 21 Erase saved setup files 41 Erase setup files Save Recall menu 68 Ethernet 18 GPIB 19 Exponential decay standard waveform 2...

Страница 104: ...Operating requirements 4 Option buttons 23 Output menu To add Noise 60 Output On Off channel 33 Output status Noise 60 Output window 21 P Parameter display area screen interface 23 Password Security menu 71 Power button 5 Power consumption 4 Power input rear panel 33 Power off 5 Power on 5 Power supply requirements 4 Procedure To adjust waveform parameters 30 Programmer Manual ix xi 20 Protect out...

Страница 105: ...trary waveform 43 To invert waveform 55 To protect your DUT 12 To modify an arbitrary waveform 38 To output a PWM waveform 56 To output a PWM waveform 49 To output an AM waveform 53 To output an AM waveform 46 To output an FSK waveform 55 To output an FSK waveform 48 To restore the default setup 24 To protect your DUT 14 To set up load impedance 59 To select a local language 9 To select a waveform...

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