Bk-precision 4079 - Manual Manual de usuario

Model: 4076, 4079 50 MHz Arbitrary Function Generator USER MANUAL

4 waveform, 50 Ω source impedance Reference IN-OUT 10 MHz, TTL compatible, input or output, for external unit synchronization 50 Ω output impedance

94 - Select OUT ON 8. CHECK that the measured voltages on the DVM at 10Vp-p, 5Vp-p, 3Vp-p, 1Vp-p, 100 mVp-p and 50mVp-p are in the accuracy rang

95 7.14 Set the unit to generate a sine waveform with 1KHz frequency and 10Vp-p. 7.15 Set the distortion analyzer to measure distortion in dB and

96 2. Push the MODE key on the unit front panel. 3. Verify that the oscilloscope displays a 1KHz sine wave. Make sure that the Output is ON.

97 - Select F2 – FROM, press key 1 and ENTER - Select F2 – DATA, press key 0 and ENTER - Select F5 – EXEC - Select F3 – YES - Select F5 – PREV - Se

98 Performance Tests Results Setting Minimum reading Maximum reading Reading Frequency DDS 1 MHz 999990 Hz 1000010 Hz Frequency ARB 1 MHz 99995

99 Yes No Operating Modes: Triggered Burst External Trig

100 22820 Savi Ranch Parkway Yorba Linda, CA 92887 www.bkprecision.com © 2009 B&K Precision Corp. V02251

5 Section 2 Installation 2.1 Introduction This section contains installation information, power requirements, initial inspection

6 2.6 Power Requirements The Model 4076 and 4079 can be operated from any source of 100 V to 265 V AC, frequency from 48 Hz to 66 Hz. The maxim

7 DB-9 pin Name Note 1 2 3 4 5 6 7 8 9 - TXD RXD - GND - RTS CRS - - Transmit Data Receive Data - Signal ground - Request to Send Clear to send -

8 2.11 GPIB Address The instrument is shipped with the address set to decimal 9. The address can be changed from the front panel by using the &quo

9 Section 3 Operating Instructions 3.1 General Description This section describes the displays, controls and connectors of the Model 4076 and 4

10 6. Unit Setting Keys - Quick keys for setting units for frequency, time, and amplitude 7. Rotary Knob - Used to increment/decrement numeri

11 4. Menu Functions Display - Displays the menu options available. Use F1-F5 keys on front panel to select the options. 5. Menu Para

12 Figure 3.3 - Back Panel View 1. Summing In - For CH 1. Use this input to apply an external analog signal to be added to the

13 position and width can be programmed at any desired Arbitrary locations. (See section 3.6.3 for details) 6. Ref In/Out - Use this connector t

2 SERVICE INFORMATION Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #. Return the

14 o AMPL| OFST  UNITS (Only when AMPL is selected, press to toggle display in Vp-p, Vrms, dBm)  50 OHM | HI-Z o INTCLK | EXTCLK - WAVE o

15 o PROT  FROM  TO  ALL  ON | OFF  PREV o SHOW WAVE o PREV • PREV  PREV - MODE o CONT o TRIG  MAN (Manual Trigger)  INT (In

16 3.6.1 PARAMETER Key This key selects and displays the waveform frequency, amplitude, offset and external reference and allows changing the par

17 F4:UNITS - Selects the amplitude units: peak-to-peak, RMS or dBm. F5:50 OHM/HI-Z - Selects the amplit

18 F4:BURST - (Burst) - Triggers output N cycles for each trigger event, where N ranges from 2 to 999,999. F5: PHASE - Selects the start phase

19 F4: PULSE - Selects the Pulse waveform and then displays the pulse menu. Refer to section 3.6.5 for details. F5: ARB - Selects the arbitrary

20 level output signal at the points specified by address and length. Note: The maximum LENGTH allowed to be set for marker is 4000. Belo

21 amplitude. Therefore, a value of 8191 corresponds to positive peak amplitude, 0 corresponds to the waveform offset, and -8191 corresponds to the

22 abort executing the predefined waveform; press YES to execute the predefined waveform. On the NOISE function a menu of ADD and NEW is prompted t

23 Protect Function. Protects (makes read-only) a section of waveform memory. F1: FROM - Selects the address of the first point to protect.

3 Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of opera

24 F3:INTEN - (Intensity) Selects the intensity of the LCD display. Select a value using the rotary input knob. Valid numeric values are from 1 t

25 3. Select between triggered (TRIG), burst (BURST) or gated (GATE) mode. Note: If this is done before turning on sweep, sweep ON selection wil

26 F2: DEV - Defines the FM deviation frequency. F3: SHAPE - Defines the modulation shape, between SINE, TRIANGLE or SQUARE. F4: MOD-FREQ - S

27 Buffer 0 is the factory default setup. F3: STORE - Stores the current front-panel setup to the specified storage buffer. Change the buffe

28 Stored Buffer number Data points of different waveforms (Start address + length) 1 A pts. 2 B pts. 3 C pts. 4 D pts. From the above illustrati

29 OFFSET 0.00 V Zero offset REPETITION 10 ms Internal trigger rate MODE CONT Waveform mode N-BURST 2 Waves per burst START ADRS 1 Start memory add

30 Trig rate short Internal trigger rate too short for wave/burst. Empty location Attempt to restore non existent setting. SC

31 1. Press PARAMETER to display the Parameter menu. 2. Press F3:AMPL to select the Amplitude parameter. 3. Use the rotary knob to set the amplitud

32 3.14.3 Creating an Arbitrary Waveform To create a complex arbitrary waveform: * Load a predefined sine waveform * Load a scaled sine waveform

33 wave crosses the origin). F4:EDIT F2:LINE F1:FROM 251 F2:TO 501 F4:EXEC F3:YES Step 4: Add a negative pulse/glitch (data value -4095) at addres

4 CAUTION: Before connecting the line cord to the AC mains, check the rear panel AC line voltage indicator. Applying a line voltage other than th

34 3.14.4 Setting the Arbitrary Frequency The arbitrary waveform frequency is a function of the number of data points used to run the waveform (

35 3.14.6 Loading a Waveform into Execution Memory To load a waveform into execution memory, specify its starting address and length in the ARB

36 You can store up to 49 front-panel setups in a part of non-volatile Flash known as the settings storage memory. When you recall a stored setup,

37 Section 4 Programming 4.1 Overview 4.1.1 GPIB This section provides det

38 User can return to local control with the press of any front panel keys, but it is extremely important to note that this should be done ONLY w

39 SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1, E2, C0 4.4 Device Address The GPIB address of the device may be set to any value from 0 to 3

40 a) The commands to set the amplitude, the offset, and to switch the output on. The output being switched on is included here in order to preven

41 The Program Message Unit Separator consists of a semicolon (';'), optionally preceded and/or followed by whitespace characters. A whi

42 mnemonics, some Character Data mnemonics have short and long forms. Only the short or the long form may be used. ii) Boolean data Boolean

43 parser how many 8-bit bytes are being sent. Indefinite Form The Indefinite Form has the structure - # - 0 – 8-bit byte – LF^EOI So

5 Table of Contents Safety Summary ... 3 Section 1 ...

44 SOURCE:FREQUENCY 3KHZ;:OUTPUT:STATE ON Common Commands may be inserted in the Program Message without affecting the instrument-control c

45 4.11.2 Service Request Enabling Service request enabling allows the user to select which Status Byte summary messages may cause the device to

46 A table of error numbers and their descriptions is presented here. No error reported 0 No error Command Errors A command er

47 Execution Errors An execution error indicates that the device could not execute a syntactically correct command, either since the data were o

48 :STATus:PRESet command will disable these events from being reported. 401 Power on 402 Operation complete The *OPC co

49 always be the last in a program message. Command Type: Common Query Syntax: *OPT? Resp

50 This command is intended for use with overlapped commands. No commands in the instrument are overlapped, and so this command has no effect. Typ

51 e) *SRE - Service request enable command This command sets the Service Request Enable Register bits. Arguments

52 *RCL 49 Stored setting location 49 stores the last instrument setting before power d

53 :SHAPe SINusoid|SQUare|TRIangle :FREQuency <numeric value> :

6 4.5 Message Exchange Protocol ...

54 Units specifying Arbitrary Point Rate or Wavelength, since the MAXimum or MINimum value is calculated at the time the command is parsed.

55 :VOLT:OFFS 2.5V :VOLT:OFFS MAX Query

56 4.13.1.6 Point Rate :SOURce:PRATe <point rate> This command is not used. Point rate setting is available for arbitrary mode only.

57 4.13.1.7.4 AM FREQuency This command sets the AM modulating waveform frequency Arguments Type:

58 This command sets the FM modulation deviation Arguments Type: Numeric. U

59 4.13.1.8.5 FM SOURce This command selects the FM modulation source as either internal (then the above settings are effective) or external (and

60 Type: Numeric. Units: MHz, KHz, Hz (default) Range: The whole frequency range

61 4.13.1.10 Sweep control The following commands control the sweep functionality: 4.13.1.10.1 Sweep STATe This command activates or deactivate

62 Command Type: Setting or Query Setting Syntax: [:SOURce:]SWEEP:STARt<ws>&

63 4.13.1.12.1 PULSe PERiod This command sets the pulse period to the specified value. NOTE: This also sets the pulse frequency. Arguments

1 Section 1 Introduction 1.1 Introduction This manual contains information required to operate, program and test the Model 4076 and

64 Command Type: Setting or Query Setting Syntax: [:SOURce:] PULse:RISe <ws>

65 Note: For model 4079, nothing changes in the commands above to control channel 1. But for channel 2, change :OUTP to :OUTP2. For example, to

66 This command is used to set the trigger mode. It is not a standard SCPI command. Arguments Type:

67 Examples: :TRIG:BURST? :TRIG:BURS? MAX 4.13.3.4 Internal Trigger Ra

68 [:ADDRess] <numeric value> :STATe <Boolean> :LENGth <numeric value> :SAVe Note: For model 4079,

69 Response: NR1 4.13.4.3 Data :ARBitrary:DATA <data> This command is used to set the values of the wa

70 Considerations: 1) The value of the data at the start and end points must first be set by the user, using the :ARB:DATA command. For e

71 Syntax: :ARBitrary:COPY<ws><start>,<length>,<destination> Example: :ARB:COPY 1,1000,1001

72 Options: SINusoid SQUare

73 Example: :ARB:STAR 100 Query Syntax: :ARBitrary:STARt?[<ws>MIN

2 - Draw a line between any two points - Clear (set to zero) any set of points or all points - Protect any set of points or all points

74 specified by appending a numeric value, to the MARKer keyword. Maximum MARKER Length 4000 points Arguments

75 :PTRansition <NRf> :NTRansition <NRf> :EVENt? :ENABle <NRf> 4.13.5.1 Status Preset

76 Up to 6 ranges may be specified using one :ENABle command, representing the 6 ranges of errors/events. The ranges are then separated from each o

77 Range: 0 to 131,072. Non integer arguments are rounded before execution. Command Type: Setting or Query

78 4.13.6 System Subsystem The SYSTem subsystem collects the functions that are not related to instrument performance. The functions implemented

79 This query is used to read the SCPI version to which the instrument complies. Command Type: Query only Query

80 4.14 IEEE 488.1 Interface Messages 4.14.1 GET - Group Execute Trigger The GET is used by the AWG as a trigger when it is in either the TRIG

81 4.15 SCPI Command Tree 4.15.1 Root Node Root [:SOURce] :OUTPut :

82 4.15.3 :OUTPut Subsystem :OUTPut [:STATe] :SUMming ON | OFF ON | OFF 4.15.4

83 4.15.6 :STATus Subsystem :STATus :OPERation [:EVENt]?

3 Output Leakage Approximately 10 mA can be present at the output BNC connector when unit is powered on and the output is off Waveform Characterist

84 ASCII and GPIB Code Chart Hex Oct Dec ASCII Msg Hex Oct Dec ASCII Msg 00 000 0 NUL 20 040 32 SP MLA0 01 001 1 SOH GTL 21 041 33 ! MLA1 02 002

85 Hex Oct Dec ASCII Msg Hex Oct Dec ASCII Msg 40 100 64 @ MTA0 60 140 96 ` MSA0,PPE 41 101 65 A MTA1 61 141 97 a MSA1,PPE 42 102 66 B MTA2 62 142

86 4.16 Block Transfer (GPIB only) Arbitrary waveform data sent in IEEE488.2 arbitrary block format may take two forms: the definite form and the

87 4.17 GPIB Communication Protocol 4.17.1 General This appendix describes the effects of interface messages on waveform generator operation an

88 The SPE message generates output serial poll status bytes when talk-addressed. SPD-Serial Poll Disable (25 with ATN) The SPD messag

89 commands are executed. All other GPIB commandsִ setting and operationalִ prompt and error since those commands are under front-panel (local) con

90 Basic Listener L4 Unlisten if My Talk Address (MTA) is received Service Request SR1 Complete capability Remote-Local RL1 C

91 Section 5 Performance Check Procedures 5.1 Introduction This section provides the procedure for checking the electrical performance require

92 5.3 Performance Tests The following tests verify that the waveform generator operates and meets specifications. Perform the tests after a war

93 Amplitude setting Minimum reading RMS Maximum reading RMS DVM reading RMS 10Vp-p 3.493V 3.578V 5Vp-p 1.743V 1.792V 3Vp-p 1.043V 1.078V 1Vp-