BK Precision 4047B User Manual Download Page 1

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Model: 4047B

Dual Channel Function/Arbitrary
Waveform Generator

USER MANUAL

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Summary of Contents for 4047B

Page 1: ...Model 4047B Dual Channel Function Arbitrary Waveform Generator USER MANUAL www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 2: ...ssociated with these category ratings The category rating is a Roman numeral of I II III or IV This rating is also accompanied by a maximum voltage of the circuit to be tested which defines the voltag...

Page 3: ...d conductor of the supplied three conductor AC line power cable The power cable must be plugged into an approved three conductor electrical outlet The power jack and mating plug of the power cable mee...

Page 4: ...2 environment The operating temperature range is 0 C to 50 C and the operating humidity is 95 relative humidity at 30 C with no condensation allowed Measurements made by this instrument may be outsid...

Page 5: ...nductors by measurements with a properly operating voltage sensing device before touching any internal parts Verify the voltage sensing device is working properly before and after making the measureme...

Page 6: ...nd exhaust ports If mounted in a rack position power devices in the rack above the instrument to minimize instrument heating while rack mounted Do not continue to operate the instrument if you cannot...

Page 7: ...l 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 13 2005 and should not be dispo...

Page 8: ...2004 108 EC Electromagnetic Compatibility Directive with the following standards Low Voltage Directive EN61010 1 2001 EMC Directive EN 61000 3 2 2006 EN 61000 3 3 1995 A1 2001 A2 2005 EN 61000 4 2 3...

Page 9: ...Out position of the power switch when instrument is OFF Power Switch On Off This is the power switch located in front of the instrument CAUTION indicates a hazardous situation which if not avoided wil...

Page 10: ...put Connections 18 2 4 Preliminary Check 19 3 Operating Instructions 21 3 1 Menu Keys 21 3 1 1 WAVEFORM Keys 21 3 1 2 MODE Key 22 3 1 3 UTILITY Key 24 3 1 4 SWEEP Key 25 3 1 5 MODULATION Key 26 3 1 6...

Page 11: ...te LOCS 47 4 2 2 Remote State REMS 47 4 3 Message Exchange Protocol 47 4 3 1 The Input Buffer 47 4 3 2 The Output Queue 48 4 3 3 Response Messages 48 4 4 Instrument Identification 48 4 5 Instrument Re...

Page 12: ...12 5 Troubleshooting Guide 72 6 Specifications 74 SERVICE INFORMATION 78 LIMITED THREE YEAR WARRANTY 79 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 13: ...e and is SCPI compatible 1 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...

Page 14: ...ey Sweep Key Channel Key Modulation Key Utility Key Enter Key Output BNCs Output On Off Key Rotary Knob and Cursor Keys Units Keys Numeric Keypad Waveform Keys LCD Display 1 2 3 4 5 6 7 8 9 10 11 12 1...

Page 15: ...ion in the numeric field if applicable 3 Use the rotary input or the numerical keyboard to change the value of the displayed parameter Changes take effect immediately 1 4 Rear Panel Overview Figure 2...

Page 16: ...of the display shows a menu selectable with function keys that corresponds to the function parameter or mode display selected Figure 3 Display Overview Display Description Wave Type Trigger Mode Frequ...

Page 17: ...wer supply Once verified connect the cable firmly The included AC power cord is safety certified for this instrument operating in rated range To change a cable or add an extension cable be sure that i...

Page 18: ...acting as the MODE selected for each channel Sync Out Connector Use this connector to output a positive TTL sync pulse generated at each waveform cycle One connector is available for each channel Modu...

Page 19: ...eliminary Check The 4047B is 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 wi...

Page 20: ...ss the On button on top of CH1 output BNC to turn on the output and observe a sine wave with the parameters above 4 Press the Freq option in the menu and use the rotary knob or the numeric keypad to c...

Page 21: ...2 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...

Page 22: ...s If a certain setting cannot be produced the waveform generator will display a warning message Figure 6 Square Menu 3 1 2 MODE Key Selects the output mode CONT Continuous TRIG Triggered GATE Gated an...

Page 23: ...anual Selects manual as the trigger 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...

Page 24: ...are from 1 to 19 Buffer 0 is the factory default setup 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 Va...

Page 25: ...n off the counter 3 1 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...

Page 26: ...1 5 MODULATION Key Selects the AM FM FSK PM or PWM modulation mode To select the output mode press MODUL key then press the function key that corresponds to the desired menu option as shown Figure 13...

Page 27: ...es the external modulation by an external signal applied to the Modulation In connector on the rear panel Press F3 to select FM menu Figure 15 FM Menu F1 Deviation Defines the FM deviation frequency F...

Page 28: ...F1 F LO Defines the low frequency of the FSK F2 F HI Defines the high frequency of the FSK F3 Rate Selects the rate of the alternating between the low and high frequencies F4 External Selects and enab...

Page 29: ...nel Press F3 to select PWM menu Figure 19 PWM Menu F1 Width Defines the pulse width of the PWM F2 Deviation Defines the pulse width deviation of the PWM F3 Frequency Shape Adjusts the PWM frequency Se...

Page 30: ...full scale waveform If the waveform does not use the full scale data points from 8191 to 8191 then its actual amplitude will be smaller F3 Offset Selects the Offset parameter Change the offset by usin...

Page 31: ...l Selects different Rise and Fall times of the Pulse F4 Prev Returns to previous menu 3 1 8 ARBITRARY Key Selects the Arbitrary waveform menu shown below Figure 22 Arbitrary Menu F1 Frequency Rate Fre...

Page 32: ...the Offset parameter Change the offset by using the cursor keys rotary dial or numerical keys If a certain setting cannot be produced the waveform generator will display a Setting Conflict error messa...

Page 33: ...mplitude of that point of the waveform scaled to the instrument output amplitude Therefore a value of 8191 corresponds to positive peak amplitude 0 corresponds to the waveform offset and 8191 correspo...

Page 34: ...ts the starting point address F2 To Selects the ending point address F3 Exec Displays the Confirmation menu F1 NO and F2 YES Figure 27 Confirmation Menu F3 Predef Predefined Waveforms Selects one of t...

Page 35: ...Divisible by Sine 16 4 Triangle 16 4 Square 2 2 Noise 16 1 F3 Scale Selects the scale factor of the waveform 100 means that the waveform spans the full scale of 8191 to 8191 Scale factors are limited...

Page 36: ...eric 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...

Page 37: ...e front panel settings Up to 20 front panel settings can be stored includes storage location 0 for factory default settings One 16382 point arbitrary waveform is stored in the flash non volatile memor...

Page 38: ...ng the waveform Setting the output frequency Setting the output amplitude and offset 3 8 2 Setting the Output To set the output channel press the Output ON key The key will lit indicating the output i...

Page 39: ...umbers range from 1 to 19 Buffer 0 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...

Page 40: ...n become tedious the auto increment function helps this process To enter individual data points into waveform memory follow these steps 1 Press ARB main key to display the selection menu 2 Press F4 AR...

Page 41: ...he output frequency to 1000Hz given the number of data points used for the waveform output is 1000 calculate 1 1000 1000 1 EXAMPLE Setting the Output Frequency To set the output frequency of a 1000 po...

Page 42: ...execution memory specify its starting address and length in the ARBITRARY menu 1 Select the channel to ON 2 Press the ARB key and select the F4 ARB function 3 Press F1 START to set the address Valid...

Page 43: ...A to Type B cable to the generator and the computer then power on the instrument 3 On most operating systems it will attempt to automatically install showing the following screen 4 Click the Close but...

Page 44: ...ave 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 inf 10 Now click OK It will show in the window...

Page 45: ...the instrument 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 4 Select No not this time and click...

Page 46: ...will now install 12 The driver will now install Once finished under Device Manager This can be opened by Right click My Computer Select Properties Select Hardware tab Click Device Manager you should s...

Page 47: ...sages using the Message Exchange Protocol similar to the one defined in IEEE 488 2 The following functions implemented in the MEP must be considered 4 3 1 The Input Buffer The device has a 128 byte lo...

Page 48: ...ion The IDN common query is used to read the instrument s identification string The string returned is as follows B K Precision 4047B 0 0 33 The 0 33 reflects the firmware version number and will chan...

Page 49: ...er Separator is used to separate the program header from the program data It consists of one or more white space characters denoted as ws Typically it is a space c Program Data The Program Data repres...

Page 50: ...n send one of the following commands FREQ 1000 FREQ 1E3 The special forms of character data accepted as numbers are MAXimum sets the parameter to its maximum value MINimum sets the parameter to its mi...

Page 51: ...character Any response string from a query command has both CR and LF characters appended For example an amplitude query command will return 1 23 CR LF 4 7 Status Reporting The instrument is capable...

Page 52: ...ust 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 d...

Page 53: ...ut of range 223 Too much data The arbitrary waveform memory limit has been exceeded 224 Illegal parameter value The parameter value must be selected from a finite list of possibilities Device Specific...

Page 54: ...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...

Page 55: ...tput 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 4 8 4 Stored Settings Commands RCL Recall ins...

Page 56: ...e selection of which channel to use is achieved through the use of a numeric suffix indicating the channel attached to the root level mnemonic When the channel is not specified channel 1 is assumed Pr...

Page 57: ...SWRAte numeric value SWSTArt numeric value SWSTOp numeric value MODE CONT TRIG GATE BRST TRIG INT EXT TRAte numeric value BURSt numeric value FREQuency frequency The frequency command controls the fr...

Page 58: ...t rate It is coupled with the frequency of the waveform by the relation Frequency 1 Point Rate Wavelength Thus changing the point rate will result in a change in frequency Arguments Type Numeric Units...

Page 59: ...les AMPL AMPL MAX Response NR2 Considerations 1 The MAXimum amplitude is dependent on the offset 2 The MAX and MIN arguments should not be used in a program message containing an OFFSet command since...

Page 60: ...m to be generated by the instrument Command Type Setting or Query Setting Syntax FUNCtion ws SIN SQU TRI Examples FUNC SIN FUNC TRI FUNC ARB Query Syntax FUNCtion Examples FUNC Response SIN TRI SQU AR...

Page 61: ...mand activates or deactivates modulation Command Type Setting or Query Setting Syntax MODULation OFF AM FM PM FSK PWM INT EXT Examples MODULation FM MODULation OFF MODULation EXT Query Syntax MODULati...

Page 62: ...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 ws frequency units MODFR ws MINimum MAXi...

Page 63: ...MHz KHz Hz default Range Fmax carrier frequency Fmin 0 01 Hz Command Type Setting or Query Setting Syntax DEViation ws frequency units DEViation ws MINimum MAXimum Examples DEV 5KHZ DEV 5E3 DEV MAXIM...

Page 64: ...tting Syntax SWRAte ws time units SWRAte ws MINimum MAXimum Examples SWRAte 50MS Query Syntax SWRAte ws MINimum MAXimum Response NR3 SWSTArt This command sets the start frequency of the sweep Argument...

Page 65: ...ery Setting Syntax SWSTOp ws frequency units SWSTOp ws MINimum MAXimum Examples SWSTOp 5KHZ SWSTOp 5E3 SWSTOp MAXIMUM SWSTOp MIN Query Syntax SWSTOp ws MAXimum MINimum Examples SWSTOp SWSTOp MAX Respo...

Page 66: ...les TRIG EXT TRIG INT Query Syntax TRIGger Response INT EXT BURSt burst count This command is used to set the number of cycles to be output in the BURST mode It is not a standard SCPI command Argument...

Page 67: ...in the error queue and removes that entry from the queue Command Type Query only Query Syntax ERRor Response Error number error description 4 9 2 Arbitrary Subsystem The Arbitrary subsystem is not par...

Page 68: ...quency of the waveform by the relation Frequency 1 Point Rate Wavelength Thus changing the point rate will result in a change in frequency Arguments Type Numeric Units s ms us ns Range 8ns to 100s Rou...

Page 69: ...ounding to integer value Command Type Setting or Query Setting Syntax Numeric ARBitrary DATA ws numeric numeric Example ARB DATA 100 200 1000 2000 2000 Query Syntax ARBitrary DATA ws number of points...

Page 70: ...orm Start Address Type Numeric The MIN and MAX forms both set the address to 1 Range 1 to 16382 Rounding to integer value Length Type Numeric Range SIN 16 to 16 382 divisible by 4 SQU 2 to 16 382 divi...

Page 71: ...he waveform to be run Arguments Type Numeric Range 1 to 16381 Rounding to integer value Command Type Setting or Query Setting Syntax ARBitrary STARt ws start address ARBitrary STARt ws MINimum MAXimum...

Page 72: ...n accept a specific range of AC input voltages Refer to section 2 1 Input Power and Fuse Requirements Q I do not get any output from the output terminals Make sure that the On button s above channel 1...

Page 73: ...es At higher frequencies impedances of the cables play a factor in the signal integrity Check that the two cables being used are the same exact lengths At higher frequencies different length cables wi...

Page 74: ...et Range 4 99 V to 4 99 V into 50 Offset Resolution 10 mV 3 digits Offset Accuracy 2 10 mV into 50 Output Impedance 50 2 Output Protection Protected against short circuit or accidental voltage practic...

Page 75: ...Internal trigger rate 0 1 Hz 1 MHz 1 s 10 s Modulation Characteristics Amplitude Modulation AM Carrier Sine Square or Triangle Source Internal External Internal Modulation 0 1 Hz 20 kHz Depth 0 to 100...

Page 76: ...ument settings Arbitrary memory 16 382 points in flash memory Power Requirements 100 V 240 V AC 10 90 V 264 VAC 47 63 Hz Max Power Consumption 30 VA Operating Temperature 0 C 50 C Storage Temperature...

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