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Global Test Supply SFG-205, User Manual

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Global Test Supply SFG-205 User Manual Download Page 82

 

 

Sweep Default 

Start/Stop Frequency 

100Hz/1.9kHz 

Sweep Time 

1S 

Trig Out 

Off 

Mode Linear 

Direction 

↑

 

Burst Default 

Period 10ms 

Phase 0° 

Count 1Cycle 

Trig Off 

Trigger Default 

Source Internal 

 

www.

GlobalTestSupply

.com

Find Quality Products Online at:

[email protected]

Summary of Contents for SFG-205

Page 1: ...10 MHz Arbitrary Function Waveform GeneratorV User Manual SFG 2 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 2: ...le must meet IEC safety standards DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE R QRW RSHUDWH WKH LQVWUXPHQW LQ WKH SUHVHQFH RI DPPDEOH JDVHV RU IXPHV 2SHUDWLRQ RI DQ HOHFWULFDO LQVWUXPHQW LQ VXFK DQ HQYL...

Page 3: ...ine voltage other than the indicated voltage can destroy the AC OLQH IXVHV RU FRQWLQXHG UH SURWHFWLRQ UHSODFH IXVHV RQO ZLWK WKRVH RI WKH VSHFL HG voltage and current ratings CAUTION This product uses...

Page 4: ...personal injury and prevent damage to instrument Chassis earth ground symbol On Power This is the In position of the power switch when instrument is ON Off Power This is the Out position of the power...

Page 5: ...panel layout and instructions versatile terminals direct graph interface built in instructions and help system have greatly simplified the operation process with the help of which users do not have t...

Page 6: ...MHz 5 standard waveforms Sine Square Ramp Pulse Noise Self defined arbitrary waveform Multiple modulation function AM FM PM ASK FSK PWM DSB AM Sweep and Burst Multiple interfaces USB host USB device U...

Page 7: ...6 2 Operating Your Generator 17 2 1 To Set Sine Signals 18 2 2 To Set Square Signals 23 2 3 To Set Ramp Signals 26 2 4 To Set Pulse Signals 29 2 5 To Set Noise Signals 33 2 6 To Set Arbitrary Signals...

Page 8: ...98 3 9 Example 9 Generate an AM Wave 100 3 10 Example 10 Generate a FM Wave 102 3 11 Example 11 Generate a PM Wave 104 3 12 Example 12 Generate a FSK Wave 106 3 13 Example 13 Generate an ASK Wave 108...

Page 9: ...General Inspection Handle Adjustment The Front Rear Panel To Set a Waveform To Set Modulate Sweep Burst To Set Output To Use Digital Input To Use Store Utility Help Function www GlobalTestSupply com...

Page 10: ...ories If the contents are incomplete or damaged please notify your sales representative 3 Inspect the instrument In case any mechanical damage or defect or if the instrument does not operate properly...

Page 11: ...rator please grip the handle by the sides and pull it outward Then make the handle rotate to the desired position Figure 1 1 Viewing Position and Carrying Position 1 3 The Front Rear Panel www GlobalT...

Page 12: ...e 1 3 The front panel has a knob and functional keys The 5 blue grey buttons on the right side of the screen are menu buttons named F1 to F5 from up to down with the help of which you can enter differ...

Page 13: ...Manual Trigger Key Sweep and Burst only 8 Output Enable Key 9 Output BNC Connector 10 Sync BNC Connector 11 Help Menu Key 12 Modulation Sweep Burst Keys 13 Utility Menu Key 14 State Storage Menu Key...

Page 14: ...Series 1 USB Interface 2 AC Input Receptacle Figure 1 5 Display Interface Sine Wave is the default display signal Waveform Display area Parameter area Menu Options www GlobalTestSupply com Find Quali...

Page 15: ...y option in the Sine menu 1 4 To Set a Waveform On the operation panel there is a set of buttons with waveform icon See Figure 1 6 The exercise below will help you familiarize with the waveform select...

Page 16: ...utton and the waveform window displays square waveform SFG 20X Series Generator can generate square signal with a frequency from 1 Hz to 10MHz and variable duty cycle Figure 1 8 Square Signal Display...

Page 17: ...1 9 Ramp Signal Display Interface As is shown in Figure 1 9 the default signal parameters are 1kHz frequency 4 0Vpp amplitude 0Vdc offset and 50 symmetry 4 Press Pulse button and the waveform window...

Page 18: ...h 5 Press Noise button and the waveform window displays noise waveform SFG 20X Series Generator can generate noise signal with a band width up to 10MHz Figure 1 11 Noise Signal Display Interface As is...

Page 19: ...arbitrary waveform signals with at most 16 kpts and 5 MHz frequency Figure 1 12 Arbitrary Waveform Signal Display Interface As is shown in Figure 1 12 the default signal parameters are 1 kHz frequency...

Page 20: ...button the modulated waveforms will be generated The modulated waveform can be changed by modifying the parameters such as type internal external modulation depth frequency waveform etc SFG 20X Series...

Page 21: ...SFG 20X Series generate signal with variable frequencies Figure 1 15 Sweep Waveform Display Interface 3 PressBurstbutton burstforsine square ramp pulseorarbitrarywaveform can be generated Figure 1 16...

Page 22: ...tton activate or deactivate the output signal Term Explanation Burst Output waveforms with set cycle times Burst can last for certain times of waveform cycle N Cycle Burst or be controlled by external...

Page 23: ...help you familiarize with the digital input function Figure 1 18 Front Panel Digital Input 1 Theupanddownkeysareusedtoshiftparametersandtheleftandrightkeys are used to shift digits 2 Keypad is used t...

Page 24: ...Utility and Help Button 1 The Store Recall button is used to store waveform data and configure information 2 The Utility button is used to set the auxiliary system function change the output configure...

Page 25: ...tting Started again This chapter covers the following topics Setting Sine Signal Setting Square Signal Setting Ramp Signal Setting Pulse Signal Setting Noise Signal Setting Arb Signal Output Modulated...

Page 26: ...evel offset low level and phase Different sine signals are generated by setting these parameters As is shown in Figure 2 1 in the soft key menu select Freq Cursor is located in the frequency parameter...

Page 27: ...se color 2 Input the desired frequency Use the keypad to input the parameter value directly and press the corresponding button to select the parameter unit Or you can use the direction button to selec...

Page 28: ...eform it will be used sequentially If you want to set the waveform by high level or low level press the Ampl HLevel or Offset LLevel button again to switch into the high level or low level parameter t...

Page 29: ...he offset shown on the screen when the instrument is powered is the default value or the set value beforehand When changing the function if the current value is valid for the new waveform it will be u...

Page 30: ...Figure 2 5 Setting the Offset www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 31: ...are waveforms are frequency period amplitude high level offset low level phase and duty As is shown in Figure 2 6 select Duty Cursor is located in the duty parameter area in the parameter display wind...

Page 32: ...the current value is valid for the new waveform it will be used sequentially 2 Input the desired Duty Cycle Function Menu Settings Explanation Freq Period Set the signal frequency or period The curren...

Page 33: ...he desired value choose the unit and press the corresponding button The generator will change the waveform immediately Figure 2 8 Setting the Duty Cycle www GlobalTestSupply com Find Quality Products...

Page 34: ...ency period amplitude high level offset low level phase and symmetry As is shown in Figure 2 9 in the soft key menu select Symmetry Cursor is located in the symmetry parameter area in the parameter di...

Page 35: ...riod Set the signal frequency or period The current parameter will be switched at a second press Ampl HLevel Set the signal amplitude or high level The current parameter will be switched at a second p...

Page 36: ...knob to input the desired value choose the unit and press the corresponding button The generator will change the waveform immediately Figure 2 11 Setting the Symmetry www GlobalTestSupply com Find Qua...

Page 37: ...iod amplitude high level offset low level pulse width Duty and Rise Fall As is shown in Figure 2 12 in the soft key menu select PulWidth Cursor is located in the pulse width parameter area in the para...

Page 38: ...ent parameter will be switched at a second press Offset LLevel Set the signal offset or low level The current parameter will be switched at a second press PulWidth Duty Set the signal pulse width or d...

Page 39: ...rising edge shown on the screen when the instrument is powered is the default value or the set value beforehand When changing the function if the current value is valid for the new waveform it will be...

Page 40: ...Figure 2 15 Setting the Rise edge www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 41: ...s are Stdev and mean As is shown in Figure 2 16 in the soft key menu select Stdev Cursor is located in the Stdev parameter area in the parameter display window and users can set the Stdev value here N...

Page 42: ...Menu Explanations of Noise Waveform Function Menu Settings Explanation Stdev Set the signal standard deviation Mean Set the signal mean www GlobalTestSupply com Find Quality Products Online at sales...

Page 43: ...menu The Arb signal consists of two types the system built in waveform and the user definable waveform The parameters for Arb waveforms are frequency period amplitude high level offset low level and...

Page 44: ...hed at a second press Ampl HLevel Set the signal amplitude or high level The current parameter will be switched at a second press Offset LLevel Set the signal offset or low level The current parameter...

Page 45: ...he Built in Waveform Press Arb Load Wform Built In and enter the following interface As is shown in Figure 2 22 there are five kinds of arbitrary waveform Function Menu Settings Explanation Built In S...

Page 46: ...angle waveform Select Validate the built in waveform Function Menu Settings Explanation StairUp Select the built in stair up waveform StairDn Select the built in stair down waveform StairUD Select the...

Page 47: ...t in square root waveform Root3 Select the built in Root3 waveform X 2 Select the built in X 2 waveform X 3 Select the built in X 3 waveform Sinc Select the built in sinc waveform Sinc sin x x Gaussia...

Page 48: ...he built in hamming window waveform Hanning Select the built in hanning window waveform Kaiser Select the built in kaiser window waveform Blackman Select the built in blackman windows waveform Gaussia...

Page 49: ...As is shown in Figure 2 27 use the direction keys or knob to choose the corresponding arbitrary waveform and press Select Figure 2 27 Stored Wform Display Interface Acot Select the built in inverse co...

Page 50: ...ency deviation modulating waveform and carrier waveform In ASK users can set the Key Freq and carrier waveform In FSK users can set the key frequency Hop Freq and carrier waveform In PM users can set...

Page 51: ...Percentage Modulation Modulation depth varies from 0 to 120 In the 0 modulation the output amplitude is the half of the set one In the 100 modulation the output amplitude is the same with the set one...

Page 52: ...ype FM to enter the following menu Figure 2 31 Table 2 15 Menu Explanations of the FM Parameters Function Menu Settings Explanation FM Freq Set the modulating waveform frequency Frequency range 2mHz 2...

Page 53: ...nstant The parameters for the ASK are as shown in Figure 2 32 Figure 2 32 Setting Interface of ASK Waveform Parameter Term Explanation Frequency Deviation The deviation should be equal to or less than...

Page 54: ...ters Function Menu Settings Explanation Key Freq Set the frequency at which the output amplitude shifts between the carrier amplitude and zero internal modulation only 2mHz 50kHz Type ASK Amplitude sh...

Page 55: ...FSK Waveform Parameter Press Mod Type FSK to enter the following interface Figure 2 35 Table 2 17 Menu Explanations of the FSK Parameters Function Menu Settings Explanation Key Freq Set the frequency...

Page 56: ...ng waveform The parameters for the PM are as shown in Figure 2 36 Figure 2 36 Setting Interface of PM Waveform Parameter Press Mod Type PM enter the following interface Figure 2 37 Table 2 18 Menu Exp...

Page 57: ...he FM are as shown in Figure 2 38 Figure 2 38 Setting Interface of PWM Waveform Parameter Press Mod Pulse PWM to enter the following menu Frequency range 2mHz 20kHz Phase Dev Range from 0 360 Type PM...

Page 58: ...xplanations of the DSB AM Parameters Function Menu Settings Explanation PWM Freq Set the modulating waveform frequency 2mHz 20kHz Width Dev Duty Dev Set the width or Duty range Type PWM Amplitude modu...

Page 59: ...kHz Type DSB AM Amplitude modulation Shape Sine Square Triangle UpRamp DnRamp Noise Arb Choose the modulating waveform To change the carrier waveform parameter press Sine Square Ramp Arb www GlobalTes...

Page 60: ...cify Sweep can be generated by sine square ramp or arbitrary waveforms pulse noise and DC are not allowed Figure 2 42 Setting Interface of Sweep Waveform Parameter Press Sweep button to enter the foll...

Page 61: ...uency changes from the start frequency to stop frequency Stop Freq Freq Span Set the stop frequency of the sweep Set the frequency span of the sweep Start Freq Mid Freq Set the start frequency of the...

Page 62: ...gated signals gated burst is applied any waveform could be used but noise can only be used in Gated Burst Press Burst button to enter the following interface Set the waveform parameters by using the...

Page 63: ...umber Start Phase Define the start point in a waveform The phase varies from 0 to 360 and the default setting is 0 For an Arbitrary Waveform 0 is the first waveform point Function Menu Settings Explan...

Page 64: ...Infinite then a continuous waveform will be generated which will not stop until a trigger event happens If needed Burst Period will increase to cater to the specific number of cycles For an infinite c...

Page 65: ...ted to enter the following interface Figure 2 48 Table 2 25 Menu Explanations of the Gated Burst Parameters Function Menu Settings Explanation NCycle Gated Set the NCycle mode Set the gated mode Polar...

Page 66: ...oscopes Figure 2 49 Save and Read Interface Figure 2 50 Table 2 26 Menu Explanations of Save and Recall Page 1 2 Function Menu Settings Explanation File Type State Data The setting of the generator Ar...

Page 67: ...ze the selected function including the arbitrary waveform frequency amplitude DC offset duty cycle symmetry and other modulation parameter used To save the instrument state the procedures are given as...

Page 68: ...the USB Device into the USB interface on the front panel and the screen will show USB flash device plug in and storage menu will show USB Device A 2 Choose the USB Device Press Browser Directory move...

Page 69: ...ss Store Recall Store to enter the following interface Enter the desired file name in the File Name frame In the middle of the figure below is the input keypad used to edit the file name Use the up an...

Page 70: ...lphanumeric interface 2 Input the file name NEWFILE Use the Knob to adjust the cursor s horizontal position and the up and down keytoadjusttheverticalposition SelecttheCharacter N andpressSelect Funct...

Page 71: ...en you have entered a wrong character move the cursor to the wrong character to be deleted and press Delete to remove it Reenter the file name 4 Press Save to finish and save the file www GlobalTestSu...

Page 72: ...rse The System Setting provides the setting for Language Display Beep Screen Guard Format Power System Configure and default setting Test provides the self testing and calibration function Press Utili...

Page 73: ...se note that there is a DC On sign at the middle left of the screen Figure 2 57 DC Setting Interface Function Menu Settings Explanation System Set the system configuration Test Cal Test and calibrate...

Page 74: ...e IO interface The equipment stands for RAW protocol and TMC protocol user may setup corresponding protocol by IO Setup To Set Output Parameter Press Utility Output Setup to enter the following interf...

Page 75: ...Setup Load to enter the following interface Please note that the load parameter shown on the right bottom is the default setting when the power is on or the pre set load value If the current value is...

Page 76: ...activated When the Sync Signal is disabled the output voltage of the Sync connector is level low In the Inverse Mode the Waveform that corresponds to the Sync Signal does not inverse The Sync Signal i...

Page 77: ...umber format Set the number format Language Set the display language Power On Default Last All the settings return to default when powered All the settings return to the last one when powered Set to D...

Page 78: ...eactivate the sound when an error occurs from the front panel or the remote interface Activate or deactivate any sound made by the button or knob on the front panel The current setting is stored in th...

Page 79: ...tor the format can have various forms 1 as point press Separator On the example is as followed Function Menu Settings Explanation Point Using dot to represent point Using comma to represent point Sepa...

Page 80: ...wed Figure 2 65 Set Format 4 as point press Separator Off the example is as followed Figure 2 66 Set Format 5 as point press Separator Space the example is as followed Figure 2 67 Set Format 6 as poin...

Page 81: ...lity System Set to Default to set the system to the default setting The default settings of the system are as followed Table 2 34 Factory Default Setting Output Default Function Sine Wave Frequency 1k...

Page 82: ...100Hz 1 9kHz Sweep Time 1S Trig Out Off Mode Linear Direction Burst Default Period 10ms Phase 0 Count 1Cycle Trig Off Trigger Default Source Internal www GlobalTestSupply com Find Quality Products On...

Page 83: ...gure 2 69 Test Cal function Menu Figure 2 70 Table 2 35 Menu Explanations of Test Setting Function Menu Settings Explain SelfTest Perform system self test SelfCal Do self calibration www GlobalTestSup...

Page 84: ...en test interface The clew words Press 7 Key to continue Press 8 Key to exit is displayed You could press the 7 for test Figure 2 72 Screen Test Interface Function Menu Settings Explain Scr Test Run s...

Page 85: ...rify that all the backlit buttons illuminate correctly Note When you operate the screen would display the white color LCD The tested button or knobs corresponding area would display green color LCD At...

Page 86: ...represent the front panel knobs The clew words Press 7 Key to continue Press 8 Key to exit is displayed You could press the 7 button continuously for testing when buttons are lighted the corresponding...

Page 87: ...hown in Figure 2 5 SelfCal do self calibration environment you use the generator changes system may calibrate data based on change of current environment Figure 2 75 SelfCal Interface www GlobalTestSu...

Page 88: ...The times of boot strap Software version Software version of current equipment Hardware version 02 00 00 21 25 represents ordinally PCB version BOM version Daughter card version FPGA version CPLD vers...

Page 89: ...eries of the product Bit 7 10 represent production date Bit 11 14 represent serial number of product For example SFG00004130008 represents the eighth generator made by GLOBAL SPECIALTIES in the fourth...

Page 90: ...tility Menu 3 Press 1 2 option button to enter the second page of Utility Menu 4 Press the Update option button 5 Press Brower option button to select Directory then select the USB Device A through di...

Page 91: ...of the front panel buttons with the help list Press Help to enter the following interface Figure 2 77 Help Menu Figure 2 78 Table 2 37 Help Menu Explanations Function Menu Settings Explanation Cursor...

Page 92: ...Example 2 Generate a Square Wave Example 3 Generate a Ramp Wave Example 4 Generate a Pulse Wave Example 5 Generate a Noise Wave Example 6 Generate an Arbitrary Wave Example 7 Generate a Sweep Wave Exa...

Page 93: ...the amplitude 1 Press Ampl to choose Ampl which will display in white color 2 Input 5 from the keyboard and choose the unit Vpp The amplitude is set to be 5Vpp Set the Offset 1 Press Offset to choose...

Page 94: ...Figure 3 1 Sine Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 95: ...lor 2 Input 2 from the keyboard and choose the unit Vpp The amplitude is set to be 2Vpp Set the offset 1 Press Offset to choose Offset which will display in white color 2 Input 0 from the keyboard and...

Page 96: ...Figure 3 2 Square Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 97: ...oose Ampl which will display in white color 2 Input 100 from the keyboard and choose the unit mVpp The amplitude is set to be 100mVpp Set the offset 1 Press Offset to choose Offset which will display...

Page 98: ...Input 30 from the keyboard and choose the unit 30 The symmetry is set to be 30 When the period amplitude offset phase and symmetry are set the wave generated is shown in Figure 3 3 Figure 3 3 Ramp Wav...

Page 99: ...e the HLevel which will display in white color 2 Input 5 from the keyboard and choose the unit V The high level is set to be 5V Set the low level 1 Press Offset and choose the LLevel which will displa...

Page 100: ...Input 20 from the keyboard and choose the unit ns The delay is set to be 20ns When the frequency high level low level pulse width and delay are set the wave generated is shown in Figure 3 4 Figure 3 4...

Page 101: ...rd and choose the unit mV The amplitude is set to be 10 mV Set the mean 1 Press Mean 2 Input 5 from the keyboard and choose the unit mV The offset is set to be 5 mV When the amplitude and offset are s...

Page 102: ...which will display in white color 2 Input 5 from the keyboard and choose the unit MHz The frequency is set to be 5MHz Set the amplitude 1 Press Ampl to choose Ampl which will display in white color 2...

Page 103: ...the wave generated is shown in Figure 3 6 Figure 3 6 Sinc Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 104: ...ard and choose the unit kHz to set the frequency 5kHz 2 Press Ampl to choose Ampl which will display in white color Input 5 from the keyboard and choose the unit Vpp to set the amplitude 5Vpp 3 Press...

Page 105: ...it kHz to set stop freq 10kHz Set the Sweep Mode Press 1 2 Linear and choose Linear When all parameters above are set the linear sweep wave generated is shown in Figure 3 7 Figure 3 7 Sweep Waveform w...

Page 106: ...frequency 10kHz 2 Press Ampl to choose Ampl which will display in white color Input 1 from the keyboard and choose the unit Vpp to set the amplitude 1Vpp 3 Press Offset to choose Offset which will di...

Page 107: ...set the burst cycle 5 Set the delay Press Delay and input 100 from the keyboard and choose the unit s to set the delay 100 s When all parameters above are set the wave generated is shown in Figure 3 8...

Page 108: ...hoose the unit Vpp to set the amplitude 1Vpp 4 Press Offset and choose Offset which will display in white color Input 0 from the keyboard and choose the unit Vdc to set the offset 0Vdc Set the modulat...

Page 109: ...Figure 3 9 AM Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 110: ...nd choose the unit Vpp to set the amplitude 1Vpp 4 Press Offset and choose Offset which will display in white color Input 0 from the keyboard and choose the unit Vdc to set the offset 0Vdc Set the mod...

Page 111: ...10 Figure 3 10 FM Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 112: ...ose the unit Vpp to set the amplitude 5Vpp 4 Press Offset and choose Offset which will display in white color Input 0 from the keyboard and choose the unit Vdc to set the offset 0Vdc Set the modulatio...

Page 113: ...Figure 3 11 PM Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 114: ...yboard and choose the unit Vpp to set the amplitude 5Vpp 4 Press Offset and choose Offset which will display in white color Input 0 from the keyboard and choose the unit Vdc to set the offset 0Vdc Set...

Page 115: ...Figure 3 12 FSK Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 116: ...y in white color Input 5 from the keyboard and choose the unit Vpp to set the amplitude 5Vpp 4 Press Offset and choose Offset which will display in white color Input 0 from the keyboard and choose the...

Page 117: ...Figure 3 13 ASK Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 118: ...choose Offset which will display in white color Input 0 from the keyboard and choose the unit Vdc to set the offset 0Vdc 5 Press PulWidth and choose PulWidth which will display in white color Input 40...

Page 119: ...14 Figure 3 14 PWM Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 120: ...n white color Input 4 from the keyboard and choose the unit Vpp to set the amplitude 4Vpp 4 Press Offset and choose Offset which will display in white color Input 0 from the keyboard and choose the un...

Page 121: ...Figure 3 15 DSB AM Waveform www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 122: ...defect or the instrument does not operate properly or fails performance tests notify the GLOBAL SPECIALTIES sales representative If the shipping container is damaged or the cushioning materials show...

Page 123: ...rt the waveform generator 4 If the generator still doesn t work after the checking please contact GLOBAL SPECIALTIES 2 If there is no signal wave output after setting the parameters please do as follo...

Page 124: ...complete warranty statement To arrange for service or obtain a copy of the complete warranty statement please contact your nearest GLOBAL SPECIALTIES sales and service office Except as provided in thi...

Page 125: ...ppendix A Accessories SFG 20X Series Function Arbitrary Waveform Generator Accessories Standard Accessories Quick Start Guide printed Power Cord USB Cable www GlobalTestSupply com Find Quality Product...

Page 126: ...a mid detergent and water Make sure the instrument is completely dry before reconnecting it to a power source To clean the exterior surface perform the following steps 1 Remove loose dust on the outsi...

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