40014/4040B DDS Function Generator - User`s Manual
Contents
1. Message Text Description Out of range The set value is out of the instrument s limits Setting conflict Settings conflict with another parameter setting or value Empty location Attempt to recall settings from an empty storage location Trig rate short Internal trigger rate is too short to output waveform or burst Save RAM New firmware installed 3 13 Quick Start This section explains how to generate various waveforms and modify the output waveform Generating a waveform output Modifying waveform output Storing and recalling a waveform generator setup 3 13 1 Selecting a Standard Waveform 23 You can select several standard waveforms as sine triangle square Creating a standard waveform requires selecting the waveform type parameters and their settings that define the waveform Generating a standard waveform requires the following Selecting the waveform Setting the output frequency Setting the output amplitude and offset 3 13 2 Setting the Output To set the output channel press the Output ON key The key will lit indicating the output is enabled 3 13 3 Using Voltage Offset Through the offset parameter you can add a positive or negative DC level to the output waveform To set voltage offset 1 Select a waveform to display its menu 2 Press F3 Offset to display the offset setting 3 Use the rotary input knob or the numerical keys to set the voltage offset To turn the vo2. This query returns the first entry in the error queue and removes that entry from the queue Command Type Query only Query Syntax ERRor Response lt Error number gt lt error description gt 49 SERVICE INFORMATION Warranty Service Please go the support and service section on our website www bkprecision com to obtain a RMA Return the product in the original packaging with proof of purchase to the address below Clearly state on the RMA the performance problem and return any leads probes connectors and accessories that you are using with the device Non Warranty Service Please go the support and service section on our website www bkprecision com to obtain a RMA Return the product in the original packaging to the address below Clearly state on the RMA the performance problem and return any leads probes connectors and accessories that you are using with the device Customers not on an open account must include payment in the form of a money order or credit card For the most current repair charges please refer to the service and support section on our website Return all merchandise to B amp K Precision Corp with pre paid shipping The flat rate repair charge for Non Warranty Service does not include return shipping Return shipping to locations in North America is included for Warranty Service For overnight shipments and non North American shipping fees please contact B amp K Precision Corp B amp K Precision Cor
3. 65535 cycles Trigger Source Trigger source may be internal external or manual Internal trigger rate 0 1 Hz 1 MHz 155 10 s Modulation Characteristics Amplitude Modulation Internal 0 1 Hz 20 kHz sine only 0 1 Hz 20 kHz sine sguare or triangle waveform External 5 Vp p for 100 modulation 10 KQ input impedance Frequency Modulation Internal 0 1 Hz 20 kHz sine only 0 1 Hz 20 kHz sine square or triangle waveform External 5 Vp p for 100 modulation 10 KQ input impedance Sweep Characteristics Sweep Shape Linear or Logarithmic up or down Sweep Time 10 ms to 100 s Input and Output Trigger IN TTL compatible Maximum rate 1 MHz Minimum width gt 50 ns Input impedance 1 kO Sync OUT TTL pulse at programmed freguency 50 source impedance Modulation IN 5 Vp p for 100 modulation 10 kQ input impedance DC to gt 20 kHz minimum bandwidth Counter Characteristics Range 50 Hz to 50 MHz 8 Resolution Auto ranging up to 8 digits Accuracy 0 02 2 digits Sensitivity 25 MV ms typical General Memory Storage Store up to 10 instrument Store up to 20 instrument settings settings Power Requirements 100 V 240 V AC 10 90 V 264 VAC Max Power Consumption lt 25 VA lt 30 VA Operating Temperature 0 C 50 C Storage Temperature 10 C 70 C Humidity 95 RH 0 C 30 C Dimensi
4. Response NR3 MODFRequency This command sets the AM and FM modulating waveform frequency Arguments Type Numeric Units MHz KHz Hz default Range Fmax 20 KHz Fmin 0 01 Hz Command Type Setting or Query Setting Syntax MODFR lt ws gt lt frequency gt units MODFR lt ws gt MINimum MAXimum Examples MODFR 5KHZ MODFR 5E3 MODFR MAXIMUM MODFR MIN Query Syntax MODFR lt ws gt MAXimum MINimum Examples MODFR 44 MODFR MAX Response NR3 MODSHape This command selects the modulating waveform shape Arguments Type Character Options SINusoid TRlangle SQUare Command Type Setting or Query Setting Syntax MODSHape lt ws gt lt SINITRI SGU gt Examples MODSHape SIN MODSHape TRI Query Syntax MODSHape Response SIN TRI SQU DEViation This command sets the FM modulation deviation Arguments Type Numeric Units MHz KHz Hz default Range Fmax carrier frequency Fmin 0 01 Hz Command Type Setting or Query Setting Syntax DE Viation lt ws gt lt frequency gt units DEViation lt ws gt MINimum MAXimum Examples DEV 5KHZ DEV 5E3 DEV MAXIMUM DEV MIN Query Syntax DEViation lt ws gt MAXimum MINimum Examples DEV DEV MAX Response NR3 45 SWEep This command activates or deactivates sweep Arguments Type Boolean Command Type Setting or Query Setting Syntax SWE lt ws gt sON OFF LIN LOG Examples SWE ON SWE LIN Query Syntax SWE Response OFFILIN ON LIN OFF LOG ON
5. ki Windows Security FS 6 Windows cant verify the publisher of this driver software gt Don t install this driver software You should check your manufacturer s website for updated driver software for your device Install this driver software anyway Only install driver software obtained from your manufacturer s website or disc Unsigned software from other sources may harm your computer or steal information v See details 12 The driver will now install Once finished under Device Manager you should see under Ports COM amp LPT an item labeled BK Precision USB to Serial Converter COM The COM F is the com port that can be used to access the virtual COM port for remote communication For Windows XP 1 The USB driver is included in the CD that comes with the instrument You can also go to www bkprecision com and browse this product s page to find and download the USB driver 2 Connect the included USB Type A to Type B cable to the generator and the computer then power on the instrument 3 The following screen will appear 28 Found New Hardware Wizard Welcome to the Found New Hardware Wizard Windows will search for current and updated software by looking on your computer on the hardware installation CD or on the Windows Update Web site with your permission LB SKS L Can Windows connect to Windows Update to search for software O Yes this time only O Yes no
6. 11 12 13 14 15 16 Output BNC Main output SYNC OUT BNC Sync output UTIL Button Utility menu MODUL Button Selects Modulation menu SWEEP Button Selects Sweep function menu MODE Button Selects Trigger mode menu 3 2 Display Window The function generator has a color LCD display that can display up to 400 x 240 dots When powering on the unit sine waveform is selected and current settings will appear in the display The bottom of the display shows a menu selectable with function keys that corresponds to the function parameter or mode display selected 3 3 Front Panel Controls The front panel controls select display and change parameter function and mode settings Use the numerical keypad rotary input knob and the cursor movement keys to enter data into the waveform generator To change a setting 1 Press the key that leads to the item to change 2 Move cursor using cursor keys to the appropriate position in the numeric field if applicable 3 Use the rotary input or the numerical keyboard to change the value of the displayed item Changes take effect immediately 3 4 Connectors The function generator has two BNC connectors on the front panel where you can connect coaxial cables These coaxial cables serve as carrier lines for output signals delivered from the function generator Output Connector Use this connector to transfer the main output signal from the function generator Trig In Connector Use this co
7. 4014B 0 to 19 4040B Non integer values are rounded before execution Type Common Command Syntax SAV lt ws gt lt NRf gt Example GAN 2 Stored setting location O stores the factory defaults and is a read only location 4 9 INSTRUMENT CONTROL COMMANDS Instrument control commands are grouped into logical subsystems according to the SCPI instrument model The commands are comprised of mnemonics indicating the subsystem to which the command belongs and the hierarchy within that subsystem When the command is to be referred to the Root node it should be prefixed with a colon Mnemonics appearing in square brackets are optional The character is used to denote a choice of specifications The lt ws gt is used to denote a white space character Note When controlling the instrument remotely do not interrupt the instrument with front panel interactions Although the instrument will be automatically changed back to 39 LOCS local mode subsequent remote commands may cause errors during communication in which will require a need of restarting the instrument before continuing again with remote operations 4 9 1 Default Subsystem The Source Subsystem controls the frequency voltage amplitude modulation and clock source The command structure is as follows FUNCtion SINusoid SQUare TRlangle FREQuency lt numeric value gt AMPLitude lt numeric value gt OFFSet lt numeric value gt DCYCle lt numeric valu
8. LOG OFF Note Sweep will automatically be active if set to Linear or Logarithmic SWRAte This command sets the time for one complete sweep Arguments Type Numeric Units S mS uS nS Range 10mS to 100S Command Type Setting or Query Setting Syntax SWRAte lt ws gt lt time gt units SWRAte lt ws gt MINimum MAXimum Examples SWRAte 50MS Query Syntax SWRAte lt ws gt MINimum MAXimum Response NR3 SWSTArt This command sets the start frequency of the sweep Arguments Type Numeric Units MHz KHz Hz default Range Dependent on the frequency range of the current function Command Type Setting or Query Setting Syntax SWSTArt lt ws gt lt frequency gt units 46 Examples Query Syntax Examples Response SWSTOp SWSTArt lt ws gt MINimum MAXimum SWSTArt 5KHZ SWSTArt 5E3 SWSTArt MAXIMUM SWSTArt MIN SWSTArt lt ws gt MAXimum MINimum SWSTArt SWSTArt MAX NR3 This command sets the stop frequency of the sweep Arguments Type Units Range Command Type Setting Syntax Examples Query Syntax Examples Response Numeric MHz KHz Hz default Dependent on the frequency range of the current function Setting or Query SWSTOp lt ws gt lt frequency gt units SWSTOp lt ws gt MINimum MAXimum SWSTOp 5KHZ SWSTOp 5E3 SWSTOp MAXIMUM SWSTOp MIN SWSTOp lt ws gt MAXimum MINimum SWSTOp SWSTOp MAX NR3 MODE lt trigger mode gt This c
9. an error is found an error code and text will appear in the display window Other error codes appear when you enter an invalid front panel setting For more information on error codes see the Error Indication section When the waveform generator finishes the diagnostic self test routine it enters the local state LOGS and assumes power on default settings Table 1 lists the factory default settings or selected after RECALL 0 Table 1 Power on Default Settings Key Function Value Description 22 Function Sine Output Waveform Frequency 1 0000 kHz Waveform Frequency Amplitude 5 00 V Peak to peak output amplitude Offset 0 00 V Zero DC offset Output OFF Output disabled Sweep OFF Sweep function disabled Modulation OFF Modulation function disabled N BURST 2 Wave per burst for burst mode Trig Source Continuous Continuous trigger Trig Rate 10 ms Internal trigger rate 3 11 Memory The waveform generator uses non volatile flash memory for storing the front panel settings 4014B Up to 10 front panel settings can be stored includes storage location 0 for factory default settings 4040B Up to 20 front panel settings can be stored includes storage location 0 for factory default settings 3 12 Displaying Errors The waveform generator displays error messages when front panel settings are either invalid or may produce unexpected results Table 2 Error Messages
10. are included in the shipping container If anything is missing please contact B amp K Precision 2 4 Instrument Mounting The 4014B and 4040B Function Generators are intended for bench use The instrument includes a front feet tilt mechanism for optimum panel viewing angle The instrument does not require special cooling when operated within conventional temperature limits It may be installed in a closed rack or test station if proper air flow can assure removing about 15 W of power dissipation 2 5 Power Requirements The function generators can be operated from any source of 90V to 264V AC frequency from 48Hz to 66Hz The maximum power consumption is 25 VA 4014B 30VA 4040B Use a slow blow fuse of 1A UL CSA approved as indicated on the rear panel of the instrument The instrument power fuse is located in the AC input plug To access the fuse first 10 disconnect the power cord and then remove the fuse box 2 6 Fuse Replacement There is a 1A 250V rated slow blow fuse at the AC input Should the fuse ever get blown follow the steps below to replace 1 Locate the fuse box next to the AC input connector in the rear panel 2 With a small flat blade screwdriver insert into the fuse box slit to pull and slide out the fuse box as indicated below 3 Check and replace fuse if necessary Fuse box OP Fuse boxslit Check Remove Fuse 2 7 Grounding Requirements For the safety of operating personnel the instrument mu
11. following functions implemented in the MEP must be considered 4 3 1 The Input Buffer The device has a 128 byte long cyclic input buffer Decoding of remote messages is begun as soon as the input buffer is not empty that is as soon as the controller has sent at least one byte to the device Should the input buffer be filled up by the controller faster than the device can remove the bytes and decode them the bus handshake CTS RTS is used to pause data transfer until room has been made for more bytes in the buffer This prevents the controller from overrunning the device with data 4 3 2 The Output Queue The device has a 100 byte long output queue in which it stores response messages for the controller to read If at the time a response message is formatted the queue contains previously formatted response messages such that there is not enough places in the queue 31 for the new message the device will hold off putting the message in the queue until there is place for it 4 3 3 Response Messages The device sends a Response Message in response to a valid query All queries return a single Response Message Unit 4 4 Instrument Identification The IDN common query is used to read the instrument s identification string The string returned is as follows BK MODEL 4040B 0 V0 1 The V0 1 reflects the firmware version number and will change accordingly 4 5 Instrument Reset The RST common command effects an instrument
12. series with the load The time constant of the coupling capacitor and load must be long enough to maintain pulse flatness Impedance Matching If the waveform generator is driving a high impedance such as a 1 MQ input impedance paralleled by a stated capacitance of an oscilloscope vertical input connect the transmission line to a 50 Q attenuator a 50 Q termination and to the oscilloscope input The attenuator isolates the input capacitance of the device and terminates the waveform generator properly 3 6 MENU Keys These keys select the main menus for displaying or changing a parameter function or mode 3 6 1 WAVEFORM Keys These keys select the waveform output and display the waveform parameter menu frequency amplitude and offset 14 Cont Frequency 1 00000 kHz Amplitude 5 00 V Offset 0 00 V Frequency Sine Menu F1 Frequency Selects and displays the frequency Change the frequency setting using the cursor keys rotary knob or numerical keys F2 Amplitude Selects and displays the amplitude Change the amplitude setting using the cursor keys rotary knob or numerical keys F3 Offset Selects and displays the offset parameter Change the offset by using the cursor keys rotary knob or numerical keys If a certain setting cannot be produced the waveform generator will display a Setting Conflict message Amplitude and offset settings interact and are bound by hardware restrictions
13. value The parameter value must be selected from a finite list of possibilities Device Specific Errors An error specific to the device occurred 315 Configuration memory lost Device memory has been lost 330 Self test failed 350 Queue overflow Error codes have been lost due to more than 10 errors being reported without being read Query Errors A query error indicates that the output queue control has detected a problem This could occur if either an attempt was made to read data from the instrument if none was available or when data were lost Data could be lost when a query causes data to be formatted for the controller to be read and the controller sends more commands without reading the data 410 Query INTERRUPTED Data were sent before the entire response of a previous query was read 420 Query UNTERMINATED An attempt was made to read a response before the complete program message meant to generate that response was sent Warnings The execution of some commands might cause an undesirable instrument state The commands are executed but a warning is issued 500 Trigger rate short 37 510 Output overload Trigger rate short means that the period of the waveform is larger than the value of the internal trigger rate Thus not every trigger will generate a cycle or burst of the waveform 4 8 COMMON COMMANDS 4 8 1 System Data Commands IDN Identification query The identification query enables
14. 2 Program mnemonic too long The mnemonic must contain no more than 12 characters 113 Undefined header 120 Numeric data error 121 Invalid character in number 123 Exponent too large 124 Too many digits 128 Numeric data not allowed A different data type was expected 131 Invalid suffix 134 Suffix too long 138 Suffix not allowed 140 Character data error 141 Invalid character data Incorrect character data were received 144 Character data too long Character data may contain no more than 12 characters 148 Character data not allowed 158 String data not allowed 161 Invalid block data An error was found in the block data 168 Block data not allowed 178 Expression data not allowed Execution Errors An execution error indicates that the device could not execute a syntactically correct command either since the data were out of the instrument s range or due to a device condition 200 Execution error 36 An attempt was made to RECALL the contents of an uninitialized stored setting buffer 211 Trigger ignored The TRG common command was ignored due to the device not being in the correct state to execute the trigger 220 Parameter error A parameter is in the correct range but conflicts with other parameters 221 Settings conflict The parameter is out of range due to the current instrument state 222 Data out of range 223 Too much data The arbitrary waveform memory limit has been exceeded 224 Ilegal parameter
15. 3 2005 and should not be disposed of as unsorted municipal waste Please utilize your local WEEE collection facilities in the disposition of this product and otherwise observe all applicable requirements Safety Symbols Refer to the user manual for warning information to AN avoid hazard or 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 switch when instrument is OFF On Supply This is the AC mains connect disconnect switch at the back of the instrument Off Supply This is the AC mains connect disconnect switch at the back of the instrument O bb CE Declaration of Conformity The function generators meet the requirements of 2006 95 EC Low Voltage Directive and 2004 108 EC Electromagnet Compatibility Directive with the following standards Low Voltage Directive EN61010 Safety requirements for electrical equipment for measurement control and laboratory use EMC Directive EN55011 For radiated and conducted emissions EN55082 Electrical discharge immunity 1 INTRODUCTION E 7 a Vater TEE 7 1 2 Ree et 7 ES Specifications td le asthe MN AAA see 7 INSTALLATION ee na 10 e D I elt ele en an en Demen ea Na Nan Ma aa criss 10 2 2 Package Ee nn ER 10 A tina sds a ri oo 10 e Ee e IT 10 2 0 F s Tee E EE 11 2 7 Gr
16. BK EFMCIAMA J rie od A Model 4014B 4040B DDS Function Generator USER MANUAL BK PRECISION Model 40408 20MHz DOS FUNCTION GENERATOR 1 GI 9 ascos Ampitude coo Garam SI 230 2 geed emu BR Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of operation service and repair of this instrument Before applying power follow the installation instructions and become familiar with the operating instructions for this instrument If this device is damaged or something is missing contact the place of purchase immediately This manual contains information and warnings that must be followed to ensure safe operation as well as maintain the meter in a safe condition GROUND THE INSTRUMENT To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground This instrument is grounded through the ground conductor of the supplied three conductor ac power cable The power cable must be plugged into an approved three conductor electrical outlet Do not alter the ground connection Without the protective ground connection all accessible conductive parts including control knobs can render an electric shock The power jack and mating plug of the power cable must meet IEC safety standards DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases
17. MMON COMMANDS oi oo mmm nama 38 4 8 1 System Dala COMMANOS emo seann nasa Nun KR Taat 38 4 8 2 Internal Operation Commande aa 38 4 8 3 Device Trigger COMMANGS cid asma 38 4 8 4 Stored Settings Commande 39 INSTRUMENT CONTROL COMMANDS nada n nana 39 4 0 Default UDS SIC Aa AR BL NN 40 1 1 Introduction 1 Introduction This manual contains information required to operate the B amp K Precision model 4014B and 4040B DDS Function Generators This section covers the instrument s general description specifications and characteristics 1 2 Description The 4014B and 4040B are versatile high performance function generators Implemented using a DDS direct digital synthesis architecture these instruments generate stable and precise sine square and triangle waveforms Both models also provide linear and logarithmic sweep for users needing sweep capability An auxiliary TTL output at the generator s frequency is available to synchronize external devices The instrument can also be remotely operated via the USB interface and is SCPI compatible 1 3 Specifications Model 4014B 4040B Frequency Characteristics Sine 0 01 Hz 12 MHz 0 01 Hz 20 MHz Square 0 01 Hz 12 MHz 0 01 Hz 20 MHz Triangle 0 01 Hz 1 MHz 0 01 Hz 2 MHz Accuracy 0 01 0 006 Hz Resolution 6 digits or 10 mHz Output Characteristics Amplitude Range 10 MVpp to 10 Vp p into 50 20 mVp p to 20 Vp p
18. To obtain the desired waveform the amplitude and offset must satisfy the following formula Vp p 2 Joffset lt 5 volts F4 Symmetry When the Square or Triangle waveforms are selected the SYMMETRY duty cycle parameter is available Change the symmetry Triangle or duty cycle Square by using the cursor keys rotary knob or numerical keys If a certain setting cannot be produced the waveform generator will display a warning message 15 Frequency 1 00000 kHz Duty Cycle 50 Symmetry Square Menu 3 6 2 MODE Key Selects the output mode CONT Continuous TRIG Triggered GATE Gated and BRST Burst To select the output mode press MODE then press the function key that corresponds to the desired Mode menu option as shown Frequency 1 00000 kHz Mode Cont Mode Menu F1 Continuous Selects continuous output F2 Triggered Triggers one output cycle of the selected waveform for each trigger event F3 Gated Triggers output cycles as long as the trigger source asserts the gate signal F4 Burst Triggers N number of output cycles for each trigger event where N ranges from 2 to 65 535 16 Note Gate and Burst modes are not available on 4014B After selecting the TRIGGERED GATED or BURST menu the trigger source menu is available Trig Int Frequency 1 00000 kHz Trig Rate 10 00 mS Trigger Menu F1 Manual Selects manual as the trigger
19. accepted as numbers are MAXimum sets the parameter to its maximum value MINimum sets the parameter to its minimum value For example to set the frequency to its maximum value we can send the command FREQ MAX Some Program Message Units either require or can accept more than one data element Program data elements are separated from each other by the Program Data Separator It is defined as optional white space characters followed by a comma which in turn is followed by optional white space characters There are two types of Program Message Units Command Message Units and Query Message Units A Query differs from a Command in that the Program Header is terminated with a question mark For example the frequency might be queried with the following query FREQ Some Query Message Units accept data giving the device more specific information about what is being queried In many cases the Query Message Unit may optionally be supplied with the MIN or MAX mnemonics as data This tells the device to return the minimum or maximum value to which the parameter may currently be set For example FREQ MAX 34 will return the maximum value to which the frequency may currently be set Not all Program Message units have query forms for example SAV and some Program Message Units might have only the query form for example IDN The instrument puts the response to the query into the output queue from where it may be re
20. aces b a Network adapters ge 5 Other devices up ATOLUSBSerial z b SP Ports COM amp L Update Driver Software b DI Processors Disable gt A Sound video an b lt gt Storage controll gt JM System devices Scan for hardware changes D F Universal Serial gt 8 USB Virtualizati Properties Uninstall Launches the Update Dri 7 Inthe following window select Browse my computer for driver software and following this select Let me pick from a list of device drivers on my computer 8 Now there will be a window listing Common hardware types Click the Next button and select on the following screen Have Disk 9 From the Install From Disk window click Browse and locate and double click the USB driver file downloaded from the website labeled atm6124 cdc in 10 Now click OK It will show in the window under Model AT91 USB to Serial Converter Click Next and you will get the following note Installing this device driver is not recommended because Windows A cannot verify that it is compatible with your hardware If the driver is not compatible your hardware will not work correctly and your computer might become unstable or stop working completely Do you want to continue installing this driver 11 Go ahead and click Yes When you get the following prompt select Install this driver software anyway 27 TZ
21. ad by the controller NOTE All commands should be terminated with a lt CR gt carriage return or lt LF gt line feed character Any response string from a query command has both lt CR gt and lt LF gt characters appended For example an amplitude query command will return 1 23 lt CR gt lt LF gt 4 7 Status Reporting The instrument is capable of reporting status events and errors to the controller 4 7 1 The Error Queue The error queue is used to store codes of errors detected in the device It is implemented as a cyclic buffer of length 10 The error queue is read with the following query ERR The first error in the queue is returned and the queue is advanced 4 7 2 Error Codes The negative error codes are defined by SCPI Positive codes are specific to the instrument The error message is returned in the form lt error number gt lt error description gt A table of error numbers and their descriptions is presented here No error reported 0 No error Command Errors A command error is in the range 199 to 100 and indicates that a syntax error was detected This includes the case of an unrecognized header 35 100 Command Error 101 Invalid character 102 Syntax error 103 Invalid separator 104 Data type error 108 Parameter not allowed More parameters than allowed were received 109 Missing parameter Fewer parameters than necessary were received 110 Command header error 111 Header separator error 11
22. ctly could result in damage to or destruction of part or all of the product WARNING Do not alter the ground connection Without the protective ground connection all accessible conductive parts including control knobs can render an electric shock The power jack and mating plug of the power cable meet IEC safety standards WARNING To avoid electrical shock hazard disconnect power cord before removing covers Refer servicing to qualified personnel CAUTION Before connecting the line cord to the AC mains check the rear panel AC line voltage indicator Applying a line voltage other than the indicated voltage can destroy the AC line fuses For continued fire protection replace fuses only with those of the specified voltage and current ratings 2 CAUTION This product uses components which can be damaged by electro static discharge ESD To avoid damage be sure to follow proper procedures for handling storing and transporting parts and subassemblies which contain ESD sensitive components Compliance Statements Disposal of Old Electrical amp Electronic Equipment Applicable in the European Union and other European countries with separate collection systems This product is subject to Directive 2002 96 EC of the European Parliament and the Council of the European Union on waste electrical and electronic equipment WEEE and in jurisdictions adopting that Directive is marked as being put on the market after August 1
23. da CA 92887 www bkprecision com 714 921 9095 50 Index Amplitude 6 14 22 cursor 21 duty cycle 14 Errors 22 factory default 21 frequency 14 Impedance Matching 13 LCD 12 Linear 18 Offset 14 recall 24 safety 2 Specifications 6 store 23 Symmetry 14 Sync Out 12 EACAN Fiw BK 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 2012 B amp K Precision Corp V030713
24. e gt OUTPUT ON OFF MODULation OFF AM FM INT EXT DEPTh lt numeric value gt MODFRequency lt numeric value gt MODSHape SIN TRI SQU DEViation lt numeric value gt SWEep ON OFF LIN LOG SWRAte lt numeric value gt SWSTArt lt numeric value gt SWSTOp lt numeric value gt MODE CONT TRIG GATE BRST TRIG INT EXT TRAte lt numeric value gt BURSt lt numeric value gt FREQuency lt frequency gt The frequency command controls the frequency of the output waveform Arguments Type Numeric Units MHz KHz Hz default Range For SIN and SQU 0 1 Hz to Max frequency see specifications For TRI 0 1 Hz to 1 MHz Rounding The value is rounded to 5 digits or 100 mHz Command Type Setting or Query Setting Syntax FREQuency lt ws gt lt frequency gt units 40 FREQuency lt ws gt MINimum MAXimum Examples FREQ 5KHZ FREQ 5E3 FREQ MAXIMUM FREQ MIN Query Syntax FREQuency lt ws gt MAXimum MINimum Examples FREQ FREQ MAX Response NR3 Considerations 1 The MIN and MAX arguments refer to currently settable minimum or maximum 2 FIXed is alias for CW AMPLitude lt p p amplitude gt The amplitude command is used to set the peak to peak amplitude of the output waveform Note that the amplitude and the offset are limited by the relation Peak Amplitude Offset lt 5V Arguments Type Numeric Units V mV VPP mVPP Range 10mV to 10V Rounding 1mV for 10mV to 999mV 10mV for 1V t
25. gnal applied to the Modulation In connector in the rear panel Press F3 to select FM menu Cont FM Frequency 1 00000 kHz FM Deviation 75 00 Hz EEN FM Menu F1 Deviation Defines the FM deviation frequency F2 Frequency Selects the modulation frequency from 0 1 Hz to 20 00 kHz 21 F3 Shape Selects the shape of the modulating waveform between Sine Triangle or Square For model 40148 only Sine is available F4 External Selects and enables the external modulation by an external signal applied to the Modulation In connector in the rear panel 3 7 ON Key Use this key to control the main output signal When the output is active the ON key will be lit By default this will be ON enabled from a power up This can be changed by changing the Out On Def settings from the UTILITY menu 3 8 Cursor Keys Use these keys to move the cursor when visible either left or right They are used in conjunction with the rotary input knob to set the step size of the rotary input knob 3 9 Rotary Input Knob Use this knob to increase and decrease numeric values The cursor indicates the low order position of the displayed value which changes when you rotate the knob for straight numeric entries only For other types of data the whole value changes when you rotate the knob 3 10 Power On Settings At power on the waveform generator performs a diagnostic self test procedure to check itself for errors If
26. ltage offset OFF repeat the steps above but set the offset voltage level to 0 3 13 4 Storing and Recalling a Waveform Generator Setup You can store front panel setups inside the internal non volatile flash memory When you recall a stored setup the front panel settings change to match the settings in the stored setup Storing Setups To store the front panel setup 1 Press UTILITY to display the menu 2 Press F2 Store to select the Store mode 3 Use the rotary input knob to select a buffer number Valid buffer numbers range from 1 to 9 4014B or 1 to 19 4040B Buffer O is a read only buffer that contains the default setup power on settings from Table 1 The function generator will overwrite and store settings into a buffer that had settings previously stored inside without a warning Recalling Setups 24 To recall stored front panel setup 1 Press UTILITY to display the menu 2 Press F1 Recall to select the Recall mode 3 Use the rotary input knob to select a buffer number Valid buffers numbers range from 0 to 9 4014B or O to 19 4040B Buffer 0 is a read only buffer that contains the default power on setup 25 4 1 4 Programming Overview This section provides detailed information on programming the generator via the USB virtual COM interface 4 1 1 Connecting to USB Virtual COM Interface Currently the USB virtual COM interface supports Windows XP 7 operating systems To connect to a PC for
27. nnector to apply an external trigger or gate signal depending on the waveform generator setting to the generator When the built in frequency counter is enabled this connector becomes an input for the counter Sync Out Connector Use this connector to output a positive TTL sync pulse generated at each waveform cycle 13 Modulation In Connector 5V p p signal for 100 modulation 10Kohms input impedance with DC gt 20 KHz bandwidth 3 5 Output Connections The waveform generator output circuits operate as a 50 Q voltage source working into a 50 Q load At higher frequencies non terminated or improperly terminated output causes aberrations on the output waveform In addition loads less than 50 Q reduce the waveform amplitude while loads more than 50 Q increase waveform amplitude Excessive distortion or aberrations caused by improper termination are less noticeable at lower frequencies especially with sine and triangle waveforms To ensure waveform integrity follow these precautions 1 Use good quality 50 Q coaxial cable and connectors 2 Make all connections tight and as short as possible 3 Use good quality attenuators if it is necessary to reduce waveform amplitudes applied to sensitive circuits 4 Use termination or impedance matching devices to avoid reflections 5 Ensure that attenuators and terminations have adequate power handling capabilities If there is a DC voltage across the output load use a coupling capacitor in
28. o 10V Command Type Setting or Query Setting Syntax AMPLitude lt ws gt lt amplitude gt units AMPLitude lt ws gt MINimum MAXimum Examples AMPL 2 5 AMPL 2 5V AMPL MAX Query Syntax AMPLitude lt ws gt MINimum MAXimum Examples AMPL AMPL MAX Response NR2 Considerations 1 The MAXimum amplitude is dependent on the offset 41 2 The MAX and MIN arguments should not be used in a program message containing an OFFSet command since these values are evaluated during parsing based on the current value of the offset OFFSet lt offset gt The offset command is used to set the DC offset of the output waveform Note that the amplitude and the offset are limited by the relation Peak Amplitude Offset lt 5V Arguments Type Numeric Units V mV Range 10mV to 5V Rounding To 10mV Command Type Setting or Query Setting Syntax OFFSet lt ws gt lt offset gt units OFFSet lt ws gt MINimum MAXimum Examples OFFS 2 5 OFFS 2 5V OFFS MAX Query Syntax OFFSet lt ws gt MINimum MAXimum Examples OFFS OFFS MAX Response NR2 Considerations 1 The MAXimum offset is dependent on the amplitude 2 The MAX and MIN arguments should not be used in a program message containing an AMPLitude command since these values are evaluated during parsing based on the current value of the amplitude FUNCtion The function command is used to set the type of waveform to be generated by the instrument Command Type Setting or Quer
29. ommand is used to set the trigger mode Arguments Type Options Command Type Character CONTinuous TRIGger GATE BURSt Setting or Query 47 Setting Syntax MODE lt ws gt lt CONT TRIG GATE BURS gt Examples MODE CONT MODE BURS Query Syntax MODE Response CONT TRIG GATE BURS TRIGger lt trigger source gt This command is used to select the trigger source for use in the Trigger Gate and Burst trigger modes Arguments Type Character Command Type Setting or Query Setting Syntax TRIGger lt ws gt lt INT EXT gt Examples TRIG EXT TRIG INT Query Syntax TRIGger Response INTIEXT BURSt lt burst count gt This command is used to set the number of cycles to be output in the BURST mode It is not a standard SCPI command Arguments Type Numeric Range 1 to 65535 Rounding To integer value Command Type Setting or Query Setting Syntax BURSt lt ws gt lt value gt Examples BURS 100 BURS MAXIMUM Query Syntax BURSt lt ws gt MAXimum MINimum Response NR1 48 Examples BURST BURS MAX TRAte lt trigger rate gt Sets the rate of the internal trigger Arguments Type Numeric Units S mS uS nS Range 1 uS to 10S Rounding to 4 digits Command Type Setting or Query Setting Syntax TRAte lt ws gt lt value gt units TRAte lt ws gt MINimum MAXimum Examples TRAte 10E 6 TRAte MIN Query Syntax TRAte lt ws gt MINimum MAXimum Response NR3 Examples TRAte TRAte MIN ERRor
30. ons 213 mm x 88 mm x 210 mm WxHxD Weight Approx 2 5 k Safety Standards EN55011 for radiated and conducted emissions EN55082 EN61010 For square wave resolution is up to 4 digits when frequency is gt 20 kHz For sine wave at 5 Vy p into 50 Q Note All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 C 5 C Specifications are subject to change without notice To ensure the most current version of this manual please download the latest version here http www bkprecision com search 4040B For current up to date product information please visit www bkprecision com 2 Installation 2 1 Introduction This section contains installation information power requirements initial inspection and signal connections for the 4014B and 4040B signal generators 2 2 Package Contents Please inspect the instrument mechanically and electrically upon receiving it Unpack all items from the shipping carton and check for any obvious signs of physical damage that may have occurred during transportation Report any damage to the shipping agent immediately Save the original packing carton for possible future reshipment Every generator is shipped with the following contents e 4014B or 4040B DDS function generator e AC Power Cord e USB type A to B interface cable e Manual contained on CD e Certificate of Calibration Verify that all items above
31. open circuit 1 dBto 12 MHz Resolution 3 digits 1000 counts Amplitude Accuracy 2 20 mV of programmed output from 1 01 V 10 V Flatness 0 5 dB to 1 MHz 0 5 dB to 1 MHz 1 dB to 20 MHz Offset Range 4 99 V to 4 99 V into 50 Q Offset Resolution 10 mV 3 digits Offset Accuracy 2 10 mV into 50 Q Output Impedance 500 2 Output Protection Protected against short circuit or accidental voltage practically available in electronic laboratories applied to the main output connector Waveform Characteristics Harmonic Distortion Square Rise Fall Time Variable Duty Cycle Symmetry Accuracy at 50 0 1 MHz lt 60 dBc 1 MHz 5 MHz lt 50 dBc 5 MHz 12 MHz lt 45 dBc 0 1 MHz lt 60 dBc 1 MHz 5 MHz lt 50 dBc 5 MHz 12 MHz lt 45 dBc 12 MHz 20 MHz lt 60 dBc lt 20 ns 10 to 90 at full amplitude into 50 Q Sguare 20 to 80 up to 2 MHz Triangle 1 to 99 in 1 steps up to 200 kHz 1 Operating Modes Continuous Output continuous at programmed parameters Triggered Output guiescent until triggered by an internal or external trigger at which time one waveform cycle is generated to programmed parameters Frequency of waveform cycle is limited to 1 MHz Gate Same as triggered mode except waveform is executed for the duration of the gate signal The last cycle started is completed Burst 2
32. or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard KEEP AWAY FROM LIVE CIRCUITS Instrument covers must not be removed by operating personnel Component replacement and internal adjustments must be made by qualified maintenance personnel Disconnect the power cord before removing the instrument covers and replacing components Under certain conditions even with the power cable removed dangerous voltages may exist To avoid injuries always disconnect power and discharge circuits before touching them DO NOT SERVICE OR ADJUST ALONE Do not attempt any internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRUMENT Do not install substitute parts or perform any unauthorized modifications to this instrument Return the instrument to B amp K Precision for service and repair to ensure that safety features are maintained WARNINGS AND CAUTIONS WARNING and CAUTION statements such as the following examples denote a hazard and appear throughout this manual Follow all instructions contained in these statements A WARNING statement calls attention to an operating procedure practice or condition which if not followed correctly could result in injury or death to personnel A CAUTION statement calls attention to an operating procedure practice or condition which if not followed corre
33. ounding Se Me EE 11 SEENEN Ae 11 OPERATING INSTRUCTIONS oo mm aan 12 3 1 General Description cats senen eminem aan 12 3 2 Display dl ele TE 13 3 3 Front Panel Controls 2 ne An AN ula el 13 A A ss de id e de 13 3 5 Output CON NEO ON Sein laa 14 AMEN Ie do 14 3 6 1 WAVEFORM Key seriada ia 14 SE SL MODE KOV do 16 363 IMA UN UN EN IN RN nu un 18 3 6 4 SWEEP Keji onlen anna SAS AD 19 3 6 5 EE 20 IP ON KO eren btn ads 22 3 6 GUISO KEY San en II AAN eraser alice tarda ies 22 3 9 Mora leg MOD DEE 22 3 10 Ee Selling Si se osn eni heh maa SA RAN RAY 22 De Tidy PWG MOLY erases sa KN Ra aa eer 23 312 Displaying GE 23 gdo QUICK STAN EE 23 3 13 1 Selecting a Standard WAVEfOIM ooooooooooo Wanna 23 SO 2 Setting the QUtP t bh earner hap huh a aah 24 4 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 3 13 3 Using Voltage ONGC ascii Sa 24 3 13 4 Storing and Recalling a Waveform Generator ZGetunp 24 PROGRAMMING mission nahan 26 A Pa SN NN Bana 26 4 1 1 Connecting to USB Virtual COM Interface nen 26 4 1 2 USB Virtual COM Settings seni BE ees 31 e EN 4 21 Local State LOC E 31 4 2 2 HOMO State REMS sti nn 31 Message Exchange Protocol RE 31 e ee aan naa 31 49 2 e 0 Hu 31 43 3 Response Messages tee erte eege ege to 32 Instrument Identification 32 last men Reset Secale e 32 Gommanc SYMIABO siaha ZR plak ol o 32 4 6 1 General Command Biet 32 Status Reporting EE 35 Mitel TNE Eror E 35 ARE Eror ee 35 CO
34. p 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 Include with the returned instrument your complete return shipping address contact name phone number and description of problem LIMITED THREE YEAR WARRANTY B amp K Precision Corp warrants to the original purchaser that its products and the component parts thereof will be free from defects in workmanship and materials for a period of three years from date of purchase B amp K Precision Corp will without charge repair or replace at its option defective product or component parts Returned product must be accompanied by proof of the purchase date in the form of a sales receipt To help us better serve you please complete the warranty registration for your new instrument via our website www bkprecision com Exclusions This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs The warranty is void if the serial number is altered defaced or removed B amp K Precision Corp shall not be liable for any consequential damages including without limitation damages resulting from loss of use Some states do not allow limitations of incidental or consequential damages So the above limitation or exclusion may not apply to you This warranty gives you specific rights and you may have other rights which vary from state to state B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Lin
35. remote communication please follow the steps below For Windows 7 1 2 3 The USB driver is included in the CD that comes with the instrument You can also go to www bkprecision com and browse this product s page to find and download the USB driver Connect the included USB Type A to Type B cable to the generator and the computer then power on the instrument On most operating systems it will attempt to automatically install showing the following screen _ Driver Software Installation Installing device driver software AT91USBSerial Searching Windows Update Obtaining device driver software from Windows Update might take a while Skip obtaining driver software from Windows Update Close Click the Close button to stop the automatic search of the driver from Windows Update Now go to Device Manager on the computer Open up the start button and right click Computer and select Properties Click Device Manager link on the top left of the side menu There will be an item listed under Other devices labeled AT91USBSerial Right click the item and select Update Driver Software eme e dGH Ele RB b E DVD CD ROM drives b 1 Floppy disk drives b BR Floppy drive controllers b 3 Human Interface Devices gt Gg IDE ATA ATAPI controllers b SD Keyboards b D Mice and other pointing devices M Monitors b X National Instruments GPIB Interf
36. reset to the factory default power up state 4 6 Command Syntax 4 6 1 General Command Structure A Program Message is defined as a string containing one Program Message Units which is an instrument command or guery The Program Message is terminated by the Program Message Terminator The Program Message Terminator consists of optional white space characters followed by the Linefeed LF character OxOA The Program Message Unit can be divided into three sections as follows a Program Header The Program Header represents the operation to be performed and consists of ASCII character mnemonics Two types of Program Headers are used in the MODEL 4040B Instrument control headers and Common Command and Query headers Common Command and Query Program Headers consist of a single mnemonic prefixed by an asterisk 32 The mnemonics consist of upper or lower case alpha characters Example The command to set the frequency to 1KHZ may be written in the following ways FREQ 1KHZ FREQ 1000HZ FREQ 1000 FREQ 1E3 freq 1khz freq 1000hz freq 1000 freq 1e3 b Program Header Separator The Program Header Separator is used to separate the program header from the program data It consists of one or more white space characters denoted as lt ws gt Typically itis a space c Program Data The Program Data represent the values of the parameters being set for example the 1KHZ in the above examples Different forms of p
37. rogram data are accepted depending on the command The Program Data types used in the instrument are i Character program data This form of data is comprised of a mnemonic made up of lower or upper case alpha characters As with Program Header mnemonics some Character Data mnemonics have short and long forms Only the short or the long form may be used ii Boolean data Boolean data indicate that the parameter can take one of two states ON or OFF The parameter may be character type ON or OFF or numeric A numeric value is rounded to an integer A non zero result is interpreted as 1 ON and a zero result as 0 OFF Queries return the values 0 or 1 iii NRf 33 This is a decimal numeric data type where NR1 indicates an integer number NR2 indicates a fixed point real number and NR3 indicates a floating point real number iv Numeric value program data This data type defines numeric values as well as special cases of Character Data Numeric values may be specified in any of Integer Fixed Point or Floating Point format All parameters which have associated units accept a suffix which may be specified using upper or lower case characters When the suffix is not specified the numeric value is accepted in the default units which are Hertz for frequency Seconds for time and Volts for voltage To set the frequency to 1KHz we can send one of the following commands FREQ 1000 FREQ 1E3 The special forms of character data
38. source To trigger the waveform generator press this MANUAL trigger button again F2 Internal Selects the internal trigger generator as the trigger source Change the internal trigger rate displayed with the rotary input knob F3 External Selects the external trigger signal as the trigger source The trigger source is supplied through the TRIG IN connector In BURST MODE the F4 key displays N Burst representing the number of burst cycles to output with each trigger The N value can be changed from 2 to 65 535 Burst Int Frequency 1 00000 kHz Burst Internal N 2 Burst Menu 3 6 3 UTILITY Key Burst Int Frequency 1 00000 kHz Recall 0 Defaults Utility Menu F1 Recall Recalls a previously stored front panel setup from the selected buffer Change the buffer number by using the rotary input knob Valid storage buffer numbers are from 4014B 1to9 4040B 1to19 Buffer 0 is the factory default setup F2 Store Stores the current front panel setup to the specified storage buffer Change the buffer number by using the data keys or the rotary input knob Valid storage buffer numbers range from 4014B 1to9 4040B 1to19 F3 Out On Def Selects the OUTPUT state on power up Select ON to enable or OFF to disable the output on power up F4 COUNTER Enables the built in frequency counter The frequency of the signal connected to the TRIG IN connector will be displayed The coun
39. st be grounded The central pin on the AC plug grounds the instrument when properly connected to the ground wire and plugged into proper receptacle WARNING TO AVOID PERSONAL INJURY DUE TO SHOCK THE THIRD WIRE EARTH GROUND MUST BE CONTINUOUS TO THE POWER OUTLET BEFORE CONNECTION TO THE POWER OUTLET EXAMINE ALL CABLES AND CONNECTIONS BETWEEN THE UNIT AND THE FACILITY POWER FOR A CONTINUOUS EARTH GROUND PATH THE POWER CABLE MUST MEET IEC SAFETY STANDARDS 2 8 Signal Connections Use RG58U 500 or equivalent coaxial cables for all input and output signals to and from the instrument 11 3 Operating Instructions 3 1 General Description This section describes the displays controls and connectors of the function generator All controls for the instrument local operation are located on the front panel 4 5 6 7 TION GENERATOR z Juas pite 500 omeo SA Cr Cr 3 8 Jt a 1 Power Button Power ON OFF unit 2 LCD Display Displays all instrument data and settings 3 Function Keys F1 F4 function keys to select menu options 4 Waveform Buttons Select Sine Ramp Triangle Square waveform shape 5 Numeric Keypad Enter numeric values for parameters 6 Units Keys Select unit of frequency time or voltage 7 Rotary Knob Increment decrement numerical values or menu selections 8 Cursor Keys Move cursor when visible left or right 9 Enter Key Confirm parameter entries 10 Output ON OFF Enable Disable Output 12
40. t operation of your system either immediately or in the future Microsoft strongly recommends that you stop this installation now and contact the hardware vendor for software that has passed Windows Logo testing Continue Anyway STOP Installation 11 Click on Continue Anyway and the driver will now install 12 The driver will now install Once finished under Device Manager This can be opened by Right click My Computer gt Select Properties gt Select Hardware tab gt Click Device Manager you should see under Ports COM amp LPT an item labeled BK Precision USB to Serial Converter COM The COM is the com port that can be used to access the virtual COM port for remote communication 30 4 1 2 USB Virtual COM Settings The USB virtual COM interface settings for the communication port are as follows BAUDRATE 115200 PARITY NONE DATA BITS 8 STOP BIT 1 FLOW CONTROL NONE 4 2 Device States The device may be in one of the two possible states described below 4 2 1 Local State LOCS In the LOCS state the device may be operated from the front panel 4 2 2 Remote State REMS In the REMS state the device may be operated from the USB interface Actuating any front panel key will cause the device state to revert to the LOCS 4 3 Message Exchange Protocol The device decodes messages using the Message Exchange Protocol similar to the one defined in IEEE 488 2 The
41. ter is auto ranging with up to 8 digits of resolution Counter 0 Hz Counter Screen Press F1 Off to turn off the counter 3 6 4 SWEEP Key Selects the Sweep Mode and allows entering of sweep parameters Sweep Start Sweep Stop and Sweep Rate To select the sweep mode press SWEEP then press the function key that corresponds to the desired Sweep menu option as shown Frequency Lin Sweep Amplitude 5 00 V Offset 0 00 V Linear Sweep Menu F1 Off Disables the sweep function F2 Linear Selects the Linear sweep shape F3 Logarithmic Selects the Logarithmic sweep shape F4 Set Defines the Sweep Start and Stop frequencies 19 Frequency Lin Sweep Start 1 000 kHz Set Sweep Menu 3 6 5 MODULATION Key Selects the AM or FM Modulation mode To select the output mode press MODUL key then press the function key that corresponds to the desired menu option as shown Frequency 1 00000 kHz Amplitude 5 00 V Offset 0 00 V Modulation Menu Press F2 to select AM menu 20 AM Frequency 1 00000 kHz AM 50 AM Menu F1 Defines the modulation depth from 0 to 100 F2 Frequency Selects the modulation frequency from 0 1 Hz to 20 00 kHz F3 Shape Selects the modulating waveform between Sine Square or Triangle For model 4014B only Sine is available F4 External Selects and enables the external modulation by an external si
42. unique identification of the device over the GPIB This query should always be the last in a program message It returns a string with four fields Manufacturer name Model name Serial number 0 if not relevant Version number Command Type Common Query Syntax IDN Response BK MODEL 4040B 0 V1 1 4 8 2 Internal Operation Commands RST Reset command The Reset command performs a device reset It causes the device to return to the factory default power up state Type Common Command Syntax RST 4 8 3 Device Trigger Commands a TRG Trigger command This command is analogous to the IEEE 488 1 Group Execute Trigger interface message and has the same effect It is used to trigger the device to output a wave and is accepted only when the trigger mode is set to Trigger Gate or Burst and the trigger source is set to BUS Type Common Command Syntax TRG 38 4 8 4 Stored Settings Commands RCL Recall instrument state This command is used to restore the state of the device to that stored in the specified memory location Arguments Type lt NRf gt Range 0 to 9 4014B 0 to 19 4040B Non integer values are rounded before execution Type Common Command Syntax RCL lt ws gt lt NRf gt Example RCL 0 Recall default state RCL 9 SAV Save instrument state This command is used to store the current instrument state in the specified memory location Arguments Type lt NRf gt Range 0 to 9
43. w and every time connect a device O No not this time Click Next to continue Select No not this time and click Next In the following screen select Install from a list or specific location Advanced and click Next In the next screen select Don t search will choose the driver to install and click Next again In the following screen click Have Disk From the Install From Disk window click Browse and locate and double click the USB driver file downloaded from the website labeled atm6124 cdc inf Select it and click OK The following screen will appear 29 Found New Hardware Wizard Select the device driver you want to install for this hardware SS Y Sap Select the manufacturer and model of your hardware device and then click Next f you have a disk that contains the driver you want to install click Have Disk Show compatible hardware Model BK Precision USB to Serial Converter A This driver is not digitally signed Tell me why driver signing is important 10 Click Next and a prompt will appear Hardware Installation The software you are installing for this hardware BK Precision USB to Serial Converter has not passed Windows Logo testing to verify its compatibility with Windows XP Tell me why this testing is important Continuing your installation of this software may impair or destabilize the correc
44. y Setting Syntax FUNCtion lt ws gt lt SIN SQU TRI gt Examples FUNC SIN FUNC TRI Query Syntax FUNCtion 42 Examples FUNC Response SIN TRI SQU DCYCle lt duty cycle value gt This command is used to set the duty cycle of the square wave or the symmetry of triangular wave The value is given in percent Arguments Type Numeric Units None percent implied Range 1 to 99 Rounding To integer Command Type Setting or Query Syntax DCYCle lt ws gt lt duty cycle value gt DCYCle lt ws gt MINimum MAXimum Query Syntax DCYCle lt ws gt MINimum MAXimum Response NR3 OUT lt state gt This command controls whether the output is ON or OFF Arguments Type Boolean Command Type Setting or Query Setting Syntax OUT lt ws gt ON 1 OFF O Examples OUT ON OUT 1 Query Syntax OUT Response oji MODULation This command activates or deactivates modulation Command Type Setting or Query Setting Syntax MODULation OFF AM FM INT EXT Examples MODULation FM MODULation OFF MODULation EXT Query 43 Syntax MODULation Response OFF AM INT AM EXT FMINT FM EXT DEPTh This command sets the AM modulation depth in Arguments Type Numeric Units none implied Range 0 to 100 Rounding To integer Command Type Setting or Query Setting Syntax DEPTh lt ws gt lt percent depth gt DEPTh lt ws gt MINimum MAXimum Examples DEPTh 50 Query Syntax DEPTh lt ws gt MINimum MAXimum
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