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User’s Manual Model 4071 31.5MHz Multi Function Arbitrary Waveform Generator.
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B&K Precision Model 4071 User’s Manual B + K Precision Corp. ALL RIGHTS RESERVED PRODUCT AND DOCUMENTATION NOTIC E: B + K Precision reserves the right to change this product and its documentation without prior notice. Information furnished by B + K Precision is believed to be accurate and reliable.
Table of Contents 1.0 Introduction 1.1 Description .................................................................................................................................................................. 2 1.2 Feature summary ...............
5.26 Voltage Controlled Oscillator (VCO) mode ........................................................................................................... 39 6.0 Remote operation 6.1 Introduction ........................................................
BK Precision 4071 User Manual Rev.2.2 1 1.0 Introduction Figure 1.0 - 1: The BK Precision model 4071 This manual contains operating instructi ons for the BK Precision Model 4071 Signal Generation and Processing Engine. Complete specifications for the Model 4071 are given in Chapter 9.
BK Precision 4071 User Manual Rev.2.2 2 1.1 Description Figure 1.1 - 1: 4071 front panel The Model 4071 is a versatile signal source capable of generating a variety of waveforms, including CW and wideband sweeps from D.C. to 31.5 MHz in steps of .01 Hz.
BK Precision 4071 User Manual Rev.2.2 3 Included with the Arbitrary Waveform Generator are a full - featured Function Generator and Pulse Generator. The function generator offers a set of pre - stored waveforms, which are generated using the Arbitrary Waveform system.
BK Precision 4071 User Manual Rev.2.2 4 2.0 Installation and setup. This section discusses how to properly connect the 4071 to y our equipment. The following diagrams identify the connectors and show typical hookups. Figure 2.0 - 1: Front Panel Connectors 1.
BK Precision 4071 User Manual Rev.2.2 5 3. External Modulation In connector The External Modulation In connector, located on the rear of the 40 71, accepts an external analog signal as illustrated here: Figure 2.
BK Precision 4071 User Manual Rev.2.2 6 4. External Trigger/Gating/FSK/BPSK input The External Trigger/Gating/FSK/BPSK In connector accepts an external digital signal on the rear of the unit as illustrated here: Figure 2.
BK Precision 4071 User Manual Rev.2.2 7 Figure 2.0 - 5: Rear panel connectors 5. External Reference Input / Ext Arb. Clock connector This connector accepts an external sample clock for the Arbitrary Waveform Generator when the unit is in External Clock or Lock Slave modes.
BK Precision 4071 User Manual Rev.2.2 8 3.0 Operating controls and keys. 3.1 Mode key The Mode key is used to change the operating mode of the 4071. When pressed, the LCD display is cleared and the question Mode? is displayed.
BK Precision 4071 User Manual Rev.2.2 9 NOTE: Care must be taken when specifying an output offset voltage and level such that the output does not clip. The loaded output cannot swing higher than +6.0V or lower than - 6.0V. Therefore: ¦ Offset voltage ¦ + 1/2 * Vp - p < 6.
BK Precision 4071 User Manual Rev.2.2 10 3.8 Clear key While the cursor is within a numeric field, the Clear key erases all digits wi thin the field, allowing the user to start over when entering a value. This key is also used to select the "Other" mode after the Mode key is pressed once.
BK Precision 4071 User Manual Rev.2.2 11 4.0 Operating guide Turn 4071 on . After a display of the hardware and software versions and serial number , the unit enters the Basic Sinewave mode of operation. The 4071 defaults to generating a 1.0 MHz sinewave at a level of - 10.
BK Precision 4071 User Manual Rev.2.2 12 4.5 Changing values For each operating mode, the LCD display shows a number of fields that hold operating parameters for the selected mode (i.e. sweep start frequency, stop frequency, etc.). To change the value of a parameter, you must first m ove the cursor to the desired field on the display.
BK Precision 4071 User Manual Rev.2.2 13 5.0 Mode descriptions The following pages describe each operating mode of the 4071. The meaning of each parameter that appears on the LCD display is described in detail. 5.1 Basic Sinewave (CW) Mode Introduction The Basic Sinewave (CW) mode generates a sinewave of fixed fr equency and level.
BK Precision 4071 User Manual Rev.2.2 14 5.2 Internal AM Mode Introduction The Internal AM mode generates an amplitude - modulated signal form with fixed carrier and modulating frequencies. An internally generated sinusoid is used as a modulating signal to vary the amplitude of a carrier sinusoid.
BK Precision 4071 User Manual Rev.2.2 15 5.3 External AM Mode Introduction External AM mode generates amplitude - modulated signal of fixed carrier frequency, were externally supplied signal is used as a modulating signal to vary signal modulated frequency and depth.
BK Precision 4071 User Manual Rev.2.2 16 5.4 Internal FM Mode Introduction Internal FM mode generates frequency - modulated signal of fixed amplitude. It used internally generated signal to modulate frequency of carrier signal.
BK Precision 4071 User Manual Rev.2.2 17 5.5 External FM Mode Introduction External FM mode generates frequency - modulated signal of fixed amplitude we re externally supplied signal is used as a modulating signal to vary frequency of the carrier signal.
BK Precision 4071 User Manual Rev.2.2 18 5.6 Internal PM Mode Introduction Internal PM mode generates phase - modulated signal of fixed amplitude. It used internal ly generated signal to modulate phase of carrier signal.
BK Precision 4071 User Manual Rev.2.2 19 5.7 External PM Mode Introduction External PM mode generates phase - modulated signal of fixed amplitude were externally supplied signal is used as a modulating signal to vary phase of the carrier signal.
BK Precision 4071 User Manual Rev.2.2 20 5.8 Sweep Mode Introduction The Sweep mode continuously changes the frequency of a fixed amplitude sinusoid between a specified start frequency and stop frequency. The user can set sweep time as well. The frequency may be stepped between the start and stop frequency linearly.
BK Precision 4071 User Manual Rev.2.2 21 5. Up / Down sweep In this field select the direction of the sweep. An up sweep begins at the start frequency and ends at the end frequency. A down sweep begins at the end frequency and ends at the start frequency.
BK Precision 4071 User Manual Rev.2.2 22 5.9 Internal FSK Mode Introduction Internal FSK mode generates a frequency shift keyed signal of fixed amplitude. Internal timer is used as modulating sig nal to toggle the output signal frequency between mark frequency and space frequency.
BK Precision 4071 User Manual Rev.2.2 23 5.10 External FSK Mode Introduction External FSK Frequency Shift Key generates a frequency shift keyed signal of fixed amplitude. External signal is used to toggle the output signal frequency between mark fr equency and the space frequency.
BK Precision 4071 User Manual Rev.2.2 24 5.11 Burst Mode Introduction The Burst mode generates a sinusoid burst of fixed frequency and level for a specifie d duration.
BK Precision 4071 User Manual Rev.2.2 25 5.12 Internal SSB Mode Introduction Internal SSB mode generates a Single Sideband modulated signal of fixed carrier frequency. Internally generated signal is used to modulate either Upper sideband or Lower sideband of a carrier signal.
BK Precision 4071 User Manual Rev.2.2 26 5.13 External SSB Mode Introduction External SSB mode generates a Single Sideband (SSB) modulated signal of fixed carrier frequency. External signal is used to modulate either Upper sideband or Lower sideband of a carrier signal .
BK Precision 4071 User Manual Rev.2.2 27 5.16 DTMF Generation Mode Introduction Dual Tone Multi Frequency generation mode generates the Touch - tone dialing tones according ANSI T1.401 - 1988 Section 7.2 standard. The user can specify dialing digits “0” to “9” alone with ext ra DTMF codes “A” thru “D”.
BK Precision 4071 User Manual Rev.2.2 28 Several keys on the front panel are used to generate DTMF digits other than “0” to “9”. They are listed here: To generate the "#" DTMF digit, press the minus ( - ) key. To generate the " ∗ " DTMF digit, press the period ( .
BK Precision 4071 User Manual Rev.2.2 29 5.17 DTMF Detection Mode Introduction Dual Tone Multi Frequency detection mode decodes and displays the Touch - tone dialing tones according to ANSI T1.401 - 1988 Section 7.2 standard. Input test signal could be applied to the Exter nal Mod Input for DTMF decoding.
BK Precision 4071 User Manual Rev.2.2 30 5.18 Power & Voltage Measurement Mode Introduction The Power & Voltage Measurement mode measures the signal level on the Ext Mod In connector and displays the power and voltage level on the LCD display.
BK Precision 4071 User Manual Rev.2.2 31 5.19 Ar bitrary Mode In Arbitrary generator mode the user could design custom waveform on PC, then download it to 4071 memory over RS - 232 serial port to synthesize signal. Continuous or trigger triggering modes are available.
BK Precision 4071 User Manual Rev.2.2 32 5.22 Internal BPSK Mod e Introduction The Internal BPSK mode generates a phase shift keyed signal of fixed amplitude. An internal timer is used as a modulating signal to switch the output phase between 0 and 180 degrees at a specified rate.
BK Precision 4071 User Manual Rev.2.2 33 5.23 External BPSK Mode Introduction The External BPSK mode generates a phase shift ke yed signal of fixed amplitude. The logic level on the Ext FSK In connector is used as a modulating signal to shift the output phase between 0 and 180 degrees.
BK Precision 4071 User Manual Rev.2.2 34 5.24 Dualtone Generation Mode Introduction The Dualtone Generation mode generates an output signal, which is the sum of two sinusoids of eq ual amplitude. The frequency of each sinusoid may be individually specified with 1 Hz resolution.
BK Precision 4071 User Manual Rev.2.2 35 Ext Gating Input This TTL compatible input can be used to gate the output signal on or off. Logic high voltage turns off the output. For further information on the Ext Gatin g Input, refer to section 2.0. Dualtone Examples The following table lists the parameters for some common Dualtone.
BK Precision 4071 User Manual Rev.2.2 36 5.25 Data Modulation Mode Introduction The data modulation mode will digitally modulate a binary message of up to 960 bits (60 words) in length. Data is digitally m odulated using FSK modulation at an adjustable baud rate.
BK Precision 4071 User Manual Rev.2.2 37 NOTE: For wideband FSK (where the difference between Mark and Space frequencies is > 1.0 MHz), the output level may shift slightly between the mark and space frequencies. The 4071 has internal leveling circuitry is disabled in this mode, in orde r to offer higher FSK modulation rates.
BK Precision 4071 User Manual Rev.2.2 38 NOTE : For more information on the Hexadecimal format, please refer to the User’s Manual chapter on Hexadecimal Format. Triggering the Transmission T he Data Modulation mode starts by setting the output frequency to 0 Hz and awaiting a trigger condition.
BK Precision 4071 User Manual Rev.2.2 39 5.26 Voltage Controlled Oscillator (VCO) Mode Introduction The Voltage Controlled Oscillator mode generates signal, where frequency could be vary between two specified values using ext ernally supplied - 5.0V/+5.
BK Precision 4071 User Manual Rev.2.2 40 6.0 Remote Operation 6.1 Introduction The Remote Operation feature allows the user to control all operations of the 4071 with a terminal or computer. Commands and responses use ASCII ch aracters; permitting a "dumb" terminal to be used to control the 4071.
BK Precision 4071 User Manual Rev.2.2 41 You now have a terminal connection established with the 4071. Hit the “?” key. You should see a command menu in response. If you do not see this menu, check the following: • On t he 4071, press Mode then Offset and verify that the baud rate is set to 9600.
BK Precision 4071 User Manual Rev.2.2 42 6.6 Remote Control Commands The diagram below gives the front panel keys and their a ssociated ASCII codes. Sending these characters to the 4071 has the same effect as pressing the associated button on the front panel.
BK Precision 4071 User Manual Rev.2.2 43 V - Report hardware and software versions This command reports the hardware, software versions. A hexadecimal serial nu mber, and a program memory checksum are also reported by this command: BK Precision model: 4071 Software Version: c.
BK Precision 4071 User Manual Rev.2.2 44 F0 - 9 - Move cursor to field 0 to 9 This command is used to move the cursor directly to the specified field number. Each parameter field on the LCD display has an associated number with it, starting with 1 and increasing as you mov e from left to right, then top to bottom.
BK Precision 4071 User Manual Rev.2.2 45 6.7 Remote Control Examples The following are some examples of ASCII character command sequences: Example 1 B F1 3.141Z N 2.3Z F0 NOTE: You do not need spaces between the characters. They were added here only to make the commands more readable.
BK Precision 4071 User Manual Rev.2.2 46 7.0 Arbitrary Waveform Mode 7.1 Quick Start Guide This guide will show you how to download and generate SINE.FLT, an example waveform in floating point format. This file is on the supplied compact disk in the disc 407 1 arb examples directory.
BK Precision 4071 User Manual Rev.2.2 47 7.2 Introduction to the Arbitra ry Waveform System 7.2.1 Description of the Arbitrary Waveform Generator The Arbitrary Mode lets the user design custom waveforms on a PC and download them to the 4071 for generation including Arbitrary Waveform system is a fully featured Function Gener ator.
BK Precision 4071 User Manual Rev.2.2 48 7.2.2 Feature Summary Arbitrary Waveform Generator: • True Ar bitrary Waveform Generation. Every point is generated, regardless of clock rate • Sample rate variable from 0 to 40 Mega - samples/Second in .
BK Precision 4071 User Manual Rev.2.2 49 7.4 Arbitrary Waveform Mode Figure 7.4 - 1: Arbitrary Waveform Mode display 1. Int Clock / Ext Clock / Lock Master Lock slave mode In this field select the clocking mode for the arbitrary waveform system: Internal Clock - The sample clock is generated internally.
BK Precision 4071 User Manual Rev.2.2 50 7.5 Function Generator Mode Figure 7.5 - 1: Function Generator Mode display 1. Waveform In this field select the desired function generator waveform. You may select from among the following: 0. Positive Ramp 1.
BK Precision 4071 User Manual Rev.2.2 51 7.6 Pulse Generator Mode 1. Positive Only This field, when set to “Y”, does not let the output signal go below 0V.
BK Precision 4071 User Manual Rev.2.2 52 7.7 Downloading arbitrary waveforms To download Arbitrary Waveform data to the 4071, you must connect the serial port on your computer to the RS - 232 port on the back of the 4071. For more detail information on this, refer to the chapter 6.
BK Precision 4071 User Manual Rev.2.2 53 7.7.2 Using your own program You may use your own application program to send the arbitrar y waveform data to the 4071. To download a waveform to the 4071, you need to send the following to the 4071 through the serial port: 1.
BK Precision 4071 User Manual Rev.2.2 54 7.8 Data Formats 7.8.1 Floating Point Format A floating point number consists of a mantissa and an optional exponent. Downloading floating point values is slower because it can take many characters to represent a single numeric value.
BK Precision 4071 User Manual Rev.2.2 55 7.8.2 Time & Value Floating Point Format This format uses th e same numerical format as Floating Point except that a Time, or Point Number value precedes each Point Value.
BK Precision 4071 User Manual Rev.2.2 56 7.8.3 Digital Format The Digital format was implemented as an easy way to design purely digital waveforms, i.e. waveforms that are either high or low. The digital format pr ovides a very efficient way of representing waveforms that assume only a high or low value.
BK Precision 4071 User Manual Rev.2.2 57 7.8.4 Integer Format This format represents a full - scale output with a base 10 number that ranges from - 2047 to +2047 as follows: - 2047 ---- - 1024 --- 0 ---- 1024 ---- 2047 - 1.0 - .5 0.0 +.5 +1.0 Rules for Integer format: 1.
BK Precision 4071 User Manual Rev.2.2 58 7.8.5 Hexadecimal Format This format sends the same two's complement data that Binary format uses, ex cept that each nibble (4 bits) of the hex value is represented by an ASCII character. Each data point is a 16 - bit value, which is sent to the 4071 as 4 ASCII characters.
BK Precision 4071 User Manual Rev.2.2 59 7.8.6 Binary Format This is the fastest way to send points to the 4071 since it transfers the data point with only 2 characters. (It is al so the least forgiving as far as getting the data sent correctly). Each data point is a 16 - bit word, which is sent to the 4071 in two bytes.
BK Precision 4071 User Manual Rev.2.2 60 7.9 Multiple Units Locking 7.9.1 Introduction to Multiple Arb Locking With this feature, users may lock several arbitrary waveform generators together to generate multiple simultaneous signals, which are locked together in frequency.
BK Precision 4071 User Manual Rev.2.2 61 More on Phase Offsets Phase Offsets are accomplished with a reset signal shared by all units. This signal tells all units to jump to a particular waveform point at the same time. By changing which point in the waveform is jumped to, the starting phase of the waveform may be adjusted.
BK Precision 4071 User Manual Rev.2.2 62 7.10 Example Arb Program ARB.BAS ARB.BAS is a program written in Microsoft Quick Basic, which calculates the points of a sinewave and downloads them to the 4071 as an arbitrary waveform.
BK Precision 4071 User Manual Rev.2.2 63 ' ------------------------------- Main Loop -------------------------------- ' This loop calculates each point of the arbitrary waveform.
BK Precision 4071 User Manual Rev.2.2 64 '****************************************************************************** ' Subroutines ' ' These subroutines take a value in PointVal (which ranges from - 1.0 to +1.0) ' and converts it to various data formats , (i.
BK Precision 4071 User Manual Rev.2.2 65 IF PointNumber = 1 THEN PRINT #1, "WF" ' Put header info before 1st data poin t IF PointNumber = 2 THEN PRINT #1, "p" ' Set SYNC .
BK Precision 4071 User Manual Rev.2.2 66 PRINT #1, a ' Send integer value to 4071 RETURN '------------------------- Send ASCII Hex data to 4071 ---------------------- ' This format send.
BK Precision 4071 User Manual Rev.2.2 67 IF PointVal < 0 THEN PointVal = PointVal + 2: j = 32768! a = INT(PointVal * j) ' Get a number 0 to 65535 a = INT(a / 16) ' Mask off lower 4 bits (.
BK Precision 4071 User Manual Rev.2.2 68 ' first and then the high byte. ' The 4071 expects the high byte first so we must reverse the two so we ' get the proper byte order (i.
BK Precision 4071 User Manual Rev.2.2 69 8.0 DC Operation Option Description The DC Operation Option allows the user to power the 4071 from a DC voltage source in the 9 - 36 VDC ran ge. The user may easily switch between the AC Line supply and a DC source.
BK Precision 4071 User Manual Rev.2.2 70 Main Output Frequency: DC to 31.5 MHz, .01 Hz steps Level: 4 mVp -p to 10.0 Vp - p, 1 mV steps (into 50 Ω ) or - 44.0 dBm to +24.0 dBm, .1 dBm steps (into 50 Ω ) in Function, Arbitrary and Pulse modes. Level: 4 mVp -p to 5.
BK Precision 4071 User Manual Rev.2.2 71 10.0 Software CD Description The compact disk, which accompanies this manual, contains a number of useful utilities and example programs, which are in directo ry /disc 4071. Due to similarity in firmware structure BK models 4070A and 4071 both are compatible with this software, except frequency range.
BK Precision 4071 User Manual Rev.2.2 72 Appendix A Example remote control host program This chapter contains an example program written in Microsoft QuickBasic for remotely con trolling the 4071. It can be used as a starting point for writing your own remote control applications.
BK Precision 4071 User Manual Rev.2.2 73 '------------------------------------------------------------------------------ '--------------------------------------------------------------------.
BK Precision 4071 User Manual Rev.2.2 74 '----------- Set a frequency and level on the 4071 -------------- ' Send the following command string to the 4071: ' A F1 18.
BK Precision 4071 User Manual Rev.2.2 75 '------------------------------------------------------------------------------ '--------------------------------------------------------------------.
BK Precision 4071 User Manual Rev.2.2 76 '------------------------------------------------------------------------------ ' Flush all Rx chars from Port 1 buffer '-----------------------.
BK Precision 4071 User Manual Rev.2.2 77 Appendix B Television Remote Control Example This chapter contains an example program written in Microsoft QuickBasic for controlling the 4071 remotely. It is used here to drive an infrared LED to issue commands to a TV or a VCR.
BK Precision 4071 User Manual Rev.2.2 78 ' ------------------------------------------------------------------------------ ' ------------------------------------------------------------------.
BK Precision 4071 User Manual Rev.2.2 79 ' ----------- Make sure a 4071 is attached to the serial port -------------- ' If we send the 4071 a control E character, it will respond with a control C. We use ' this feature to see if a 4071 is attached.
BK Precision 4071 User Manual Rev.2.2 80 GetCommand: CLS PRINT : PRINT PRINT " 1. Power on/off" PRINT " 2. Channel Up" PRINT " 3.
BK Precision 4071 User Manual Rev.2.2 81 Limited Two - Year Warranty B&K Precision Corp. warrants to the original purchaser that its product and the component parts thereof, will be free from defects in workmanship and materials for a period of two years from the data of purchase.
BK Precision 4071 User Manual Rev.2.2 82 Service Information Warranty Service: Please return the product in the original p ackaging with proof of purchase to the below address. Clearly state in writing the performance problem and return any leads, connectors and accessories that you are using with the device.
22820 Savi Ranch Pkwy Yorba Linda, CA 92887 USA TEL: 714 - 921 - 9095 FAX: 714 - 921 - 6422 www.bkprecision.com PN: 481 - 419 - 9 - 001 Printed in the U.
Een belangrijk punt na aankoop van elk apparaat B&K 4071 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen B&K 4071 heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens B&K 4071 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding B&K 4071 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over B&K 4071 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van B&K 4071 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de B&K 4071 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met B&K 4071 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
