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Fluke 271 User Manual

Programmable 10 mhz dds function
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271
Programmable 10 MHz DDS Function Generator
Users Manual
January 2005
© 2005 Fluke Corporation, All rights reserved. Printed in USA
All product names are trademarks of their respective companies.
Fluke-Direct
.com
info@Fluke-Direct.com
1.888.475.5235

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  • Page 1 ® Programmable 10 MHz DDS Function Generator Users Manual January 2005 © 2005 Fluke Corporation, All rights reserved. Printed in USA All product names are trademarks of their respective companies. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 2 Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price.
  • Page 3 If the instrument is clearly defective, has been subject to mechanical damage, excessive moisture or chemical corrosion the safety protection may be impaired and the apparatus should be withdrawn from use and returned for checking and repair. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 4 20 mm button cell type 2032. Do not mix with solid waste stream. Do not cut open, incinerate, expose to temperatures above 60 °C or attempt to recharge. Used batteries should be disposed of by a qualified recycler or hazardous materials handler. Contact your authorized Fluke Service Center for recycling information. Caution Do not wet the instrument when cleaning it and in particular use only a soft dry cloth to clean the LCD window.
  • Page 5 Cautions To ensure continued compliance with the EMC directive the following precautions should be observed: connect the generator to other equipment using only high quality, double-screened cables. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 6 Always ensure all case screws are correctly refitted and tightened. In the event of part replacement becoming necessary, only use components of an identical type. Refer to the Service Manual. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 7: Table Of Contents

    Outputs ......................1-7 Main Output ....................1-7 Aux Out..................... 1-7 Trig/Sweep Out ..................1-7 Inputs ......................1-8 Ext Trig ..................... 1-8 VCA In ...................... 1-8 Phase locking....................1-8 Clock In/Out....................1-8 Sync Out....................1-8 Interfaces ....................... 1-8 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 8 Square Wave Generation ................5-9 Filter ......................5-9 Auxiliary Output.................... 5-10 Frequency Stop....................5-10 Trigger/Sweep Output ................... 5-10 Sweep Operation ................. 6-1 Introduction......................6-2 Connections for Sweep Operation ..............6-2 Setting Sweep Span and Markers ..............6-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 9 Timing Considerations..................11-3 Saving Hop Settings................... 11-4 System Operations................12-1 Storing and Recalling Set-Ups................12-1 System Settings....................12-2 Cursor Style ....................12-2 Rotary Control ....................12-2 Power Up Setting................... 12-2 CLOCK IN/OUT Setting................12-2 Synchronizing Generators..............13-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 10 Power on Settings..................16-9 Remote Commands.................... 16-10 RS232 Remote Command Formats ............... 16-10 GPIB Remote Command Formats..............16-10 Command List ....................16-11 Function Selection ..................16-12 Main Generator Parameters ................16-12 Sweep Parameters..................16-12 Trigger and Gate.................... 16-13 viii Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 11 B DDS Operation and Further Waveform Considerations ......B-1 C Application Information Notes..............C-1 D Warning and Error Messages ..............D-1 E Factory System Defaults ................E-1 Waveform Manager Plus................F-1 G Front and Rear Panels.................. G-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 12 Users Manual Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 13 Main Output ....................1-7 Aux Out..................... 1-7 Trig/Sweep Out ..................1-7 Inputs ......................1-8 Ext Trig ..................... 1-8 VCA In ...................... 1-8 Phase locking....................1-8 Clock In/Out....................1-8 Sync Out....................1-8 Interfaces ....................... 1-8 General ......................1-8 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 14: Introduction

    AM is available for all waveforms and is variable in 1 % steps up to 100 %. An internal AM source is incorporated. Modulation may also be controlled by an external generator. Frequency shift keying FSK provides phase coherent switching between two selected frequencies at a rate defined by the switching signal source. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 15: Introduction And Specifications

    As well as operating in conventional RS-232 mode the serial interface can be used in addressable mode whereby up to 32 instruments can be linked to a single PC serial port. Fluke-Direct .com info@Fluke-Direct.com...

  • Page 16: Specifications

    1 to 99 % (0.1 % resolution) from 0.1 mHz to 100 kHz Accuracy: 10 ppm for 1 year Output Level: 2.5 mV to 10 V p−p into 50 Ω Linearity Error: <0.5 % to 30 kHz Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 17: Positive And Negative Pulses

    White noise output with a typical -3 dB bandwidth of 0.03 Hz to 700 kHz. Amplitude and offset are adjustable. Noise can only be used with gated and AM modes. Modulation Modes Continuous Continuous cycles of the selected waveform are output at the programmed frequency. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 18: Trigger And Burst

    From 0.1 mHz to 10 MHz. Carrier waveforms: All. Switch repetition rate: dc to 50 kHz internal, dc to 1 MHz external. Switching signal source: Manual (front panel key), internal trigger generator, external signal or remote interface. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 19: Start/Stop Phase

    1 V pulses at marker points. In hop mode the output goes low on entry to each waveform step and high after the new frequency and wave shape of that step have been set. Output impedance is 1 kΩ. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 20: Inputs

    100 V ac, 110-120 V ac or 220-240 V ac ±10 %, 50/60 Hz, adjustable internally; 40 VA max. Installation category II. Temperature range: operating: +5 to 40 °C, 20-80 % RH. storage: -20 to +60 °C Environmental: Indoor use at altitudes up to 2000 m, Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 21 Introduction and Specifications Specifications Pollution degree 2. Options: 19 inch rack mounting kit. Safety: Complies with EN61010-1. EMC: Complies with EN61326. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 22 Users Manual 1-10 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 23: Installation

    Chapter 2 Installation Title Page Mains Operating Voltage................... 2-2 Fuse........................2-2 Mains Lead ......................2-2 Mounting......................2-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 24: Mains Operating Voltage

    This instrument is suitable both for bench use and rack mounting. It is delivered with feet for bench mounting. The front feet include a tilt mechanism for optimal panel angle. A rack kit for mounting in a 19 inch rack is available from the manufacturers. Fluke-Direct .com info@Fluke-Direct.com...

  • Page 25: Connections

    AUX OUT ..................... 3-2 EXT TRIG ..................... 3-2 Rear Panel Connections ..................3-2 CLOCK IN/OUT ................... 3-2 VCA IN ......................3-3 SYNC OUT ....................3-3 TRIG/SWEEP OUT ..................3-3 RS232 ......................3-4 GPIB (IEEE-488) ..................3-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 26: Front Panel Connections

    PHASE LOCK. As an output the logic levels are nominally 1 V and 4 V from typically 50 Ω. CLOCK IN/OUT will withstand a short-circuit. When used as an input the threshold is TTL/CMOS compatible. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 27: Vca In

    Output levels are nominally 0 V and 4 V from 1 kΩ. TRIG/SWEEP OUT will withstand a short-circuit. Caution To avoid risk of damage to the instrument, do not apply external voltages to this output. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 28: Rs232

    The GPIB interface is an option. It is not isolated; the GPIB signal grounds are connected to the instrument ground. The implemented subsets are: SH1 AH1 T6 TE0 L4 LE0 SR1 RL1 PP1 DC1 DT1 C0 E2 The GPIB address is set from the front panel using the REMOTE menu. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 29: General Operation

    Chapter 4 General Operation Title Page Introduction......................4-2 DDS Principles ....................4-2 Switching On ..................... 4-2 Display Contrast .................... 4-3 Keyboard ....................... 4-3 Principles of Editing ..................4-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 30: Introduction

    The power switch is located at the bottom left of the front panel. At power up the generator displays the installed software revision whilst loading its RAM with waveforms; if an error is encountered the message "SYSTEM RAM ERROR, Fluke-Direct .com info@Fluke-Direct.com...

  • Page 31: Display Contrast

    6. UTILITIES keys give access to the STORE, RECALL and REMOTE parameter menus; the MAN/SYNC key is used for manual triggering and synchronizing two or more generators when suitably connected together. 7. Lastly, the ENTER, ESCAPE, and CE (Clear Entry) keys have self-explanatory functions. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 32: Principles Of Editing

    1 kHz steps. The display will auto-range up or down as the frequency is changed, provided that autoranging permits the increment size to be maintained; this will in turn determine the lowest or highest setting that can be achieved by turning the control. In the Fluke-Direct .com info@Fluke-Direct.com...
  • Page 33 100 Hz increment, the display would have autoranged at 1 kHz to FREQ = 900.0000 Hz and could then be decremented further right down to FREQ = 000.0000 Hz without losing the 100 Hz increment. Turning the control quickly will step numeric values in multiple increments. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 34 Users Manual Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 35: Main Generator Operation

    Warning and Error Messages................5-6 The Auxiliary Output..................5-7 Auxiliary Output Phase ................. 5-8 Waveform Generation Options ................5-9 Square Wave Generation ................5-9 Filter ......................5-9 Auxiliary Output.................... 5-10 Frequency Stop....................5-10 Trigger/Sweep Output ................... 5-10 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 36: Introduction

    If the edit cursor is moved to the numeric field, turning the rotary control will increment or decrement the numeric value in steps determined by the edit position within the field. The FIELD keys move the cursor to the field and the DIGIT keys move it within the field. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 37: Output Level

    +/- key will invert the MAIN OUT output. If the dc offset is non-zero, the signal is inverted about the offset. The one exception to this is if the output level is specified in dBm; since low signals are specified in -dBm, the - sign is interpreted as part of a new Fluke-Direct .com info@Fluke-Direct.com...

  • Page 38: Output Impedance

    The actual dc offset at the MAIN OUT socket is attenuated by the fixed-step output attenuator when this is in use. Since it is not obvious when the attenuator steps are changed the actual offset is shown in brackets as a non-editable field to the right of the set value. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 39: Dc Output

    The limits are given in chapter 1, Introduction and Specifications. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 40: Warning And Error Messages

    Examples are: 1. Entering a frequency of 100 MHz. The error message FREQUENCY/PERIOD VAL OUT OF RANGE is shown. 2. Entering a VhiZ of 25 V p-p. The error message MAX OUTPUT LEVEL EXCEEDED is shown. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 41: The Auxiliary Output

    AUX OUT is a TTL/CMOS level output synchronous with MAIN OUT and having the same symmetry. However, the phase of the AUX OUT can be varied with respect to the MAIN OUT by changing the PHASE setting on the TRIGger edit menu. Fluke-Direct .com info@Fluke-Direct.com...

  • Page 42: Auxiliary Output Phase

    The AUX OUT signal accompanying ramp, staircase and arbitrary waveforms is, by default, always generated independently; phase shift is 180° adjustable across the frequency range but again 0º 180º 360º clock jitter becomes increasingly significant at higher frequencies sha0010f.emf Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 43: Waveform Generation Options

    OPTions menu, as described above. Filter The generator contains a 7-stage elliptical filter which exhibits a sharp cut-off beyond the maximum generator frequency, reducing intermodulation, spurious and clock harmonics Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 44: Auxiliary Output

    With SWEEP/TGEN=AUTO the function of the rear panel TRIG/SWEEP OUT socket changes automatically when the operating mode is changed between sweep, hop and any other mode; the two functions of this output are described in chapter 3, Connections. 5-10 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 45 SWEEP/TGEN=TRIG the TRIG/SWEEP OUTput always outputs the internal trigger generator signal. Note that, except when using the internal trigger generator in trigger, gate, FSK or AM modes, this signal is not synchronized with the main generator. 5-11 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 46 Users Manual 5-12 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 47: Sweep Operation

    Chapter 6 Sweep Operation Title Page Introduction......................6-2 Connections for Sweep Operation ..............6-2 Setting Sweep Span and Markers ..............6-2 Setting Sweep Mode, Ramp Time and Source ..........6-3 Frequency Stepping Resolution ................. 6-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 48: Introduction

    The generator does not provide a ramp output for use with X-Y displays or recorders. Setting Sweep Span and Markers Pressing the EDIT key followed by the SWEEP key displays the first page of the sweep parameters with values set to factory defaults. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 49: Setting Sweep Mode, Ramp Time And Source

    TRIG SRC (trigger source); one more press returns the cursor to the first field of the first page. Pressing ESCAPE always exits the edit menu and returns to the main menu. Fluke-Direct .com info@Fluke-Direct.com...

  • Page 50: Frequency Stepping Resolution

    Secondly, if the begin frequency is less than 800 Hz (the ramp rate for fast sweeps), one or more of the low frequency steps will contain incomplete cycles. These effects are only created because of the very wide sweeps that Fluke-Direct .com info@Fluke-Direct.com...
  • Page 51 DDS techniques; analogue generators usually have more restricted capabilities. Note also that because the marker pulse duration (from the rear panel TRIG/SWEEP OUT socket) is that of the nearest frequency step, fast sweep rates with few steps will have wider marker pulses. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 52 Users Manual Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 53: Triggered Burst And Gate

    Triggered Burst and Gate Title Page Introduction......................7-2 Internal Trigger Generator................7-2 External Trigger Input ................... 7-2 Triggered Burst ....................7-2 Trigger Source ....................7-3 Burst Count....................7-3 Start/Stop Phase..................... 7-3 Gated Mode......................7-4 Gate Source ....................7-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 54: Introduction

    TRIG key. When trigger edit is selected the lamp beside the TRIG key flashes to show edit mode regardless of whether triggered burst operation is currently selected to be on or off. SOURCE=EXT TGEN=1.00ms 1.000kHz BURST COUNT= 0001 PHASE=+000° (+000°) Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 55: Trigger Source

    AUX OUT and MAIN OUT becoming more significant and by the delays in the burst count and phase control circuits themselves. These delays can be equivalent to a phase shift of about +45 ° at 1MHz; however, by ‘backing off’ the Fluke-Direct .com info@Fluke-Direct.com...

  • Page 56: Gated Mode

    GPIB interfaces. With the source set to TGEN, the generator waveform is gated on as explained in the Internal trigger generator section; the trigger generator is set exactly as described in the Trigger source section. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 57: Amplitude Modulation

    Chapter 8 Amplitude Modulation Title Page Introduction......................8-2 Amplitude Modulation (Internal)............... 8-2 Modulation Frequency................... 8-2 Modulation Depth..................8-2 Modulation Waveform .................. 8-3 VCA (External)....................8-3 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 58: Introduction

    Move the edit cursor to the INT MOD DEPTH field to set the modulation depth between 1 % and 100 % in 1 % increments. The maximum output (20 V p-p into an open circuit) cannot be exceeded and clipping will occur if modulation attempts to drive the Fluke-Direct .com info@Fluke-Direct.com...

  • Page 59: Modulation Waveform

    Select EXT VCA on the AM edit menu and turn AM on; the dc level will now be modulated by the signal applied to the VCA IN socket. Fluke-Direct .com info@Fluke-Direct.com...
  • Page 60 Users Manual Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 61: Fsk

    Chapter 9 Title Page Introduction......................9-2 Frequency Setting..................9-2 Trigger Source ....................9-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 62: Introduction

    Because the internal trigger generator can be used by the trigger, gate, FSK and AM functions, and can be set from their respective edit menus, an information field is displayed in brackets beside TGEN when this is selected as the source. This field will Fluke-Direct .com info@Fluke-Direct.com...
  • Page 63 [FREE] when TGEN is not used elsewhere, or one of the four letters G, F, A or T to indicate that the generator is currently set as the source on the GATE, FSK, AM, or TRIG menus respectively, in addition to the menu currently displayed. Fluke-Direct .com info@Fluke-Direct.com...
  • Page 64 Users Manual Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 65: Special Waveforms

    Chapter 10 Special Waveforms Title Page Staircase ......................10-2 Arbitrary......................10-3 Recalling Arbitrary Waveforms ..............10-3 Storing Arbitrary Waveforms................ 10-3 Noise ........................10-4 10-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 66: Staircase

    LEVEL=000. Waveform editing forces the symmetry to 50 % to simplify entry; when edit mode is ended the waveform symmetry will return to that specified on the main menu. 10-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 67: Arbitrary

    Arbitrary waveforms created from the front panel, e.g. staircase waveforms, can be saved to non-volatile RAM using the arb edit menu. With the edit cursor in the first edit field of the menu, alternate presses of the DIGIT keys will switch the field between RECALL and STORE. 10-3 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 68: Noise

    GATE and AM modes; attempting to switch on any other mode will bring up the warning message Operation is illegal here, although normal editing of all modes is still permitted. 10-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 69: Hop

    Chapter 11 Title Page Introduction......................11-2 Setting each Waveform Step................11-2 Defining the Sequence and Timing..............11-2 Running the Sequence ..................11-3 Timing Considerations..................11-3 Saving Hop Settings................... 11-4 11-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 70: Introduction

    LAST= field, after which it will go back to step 00 and start again. The desired sequence should therefore be set starting at step 00 and the LAST= field should be set to the last valid step number. 11-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 71: Running The Sequence

    The set duration of the step is timed from the rising edge of the synchronizing signal at the TRIG/SWEEP OUT socket. The minimum step duration of 2 ms can be used for frequency only changes but the time needed to implement wave shape, amplitude or 11-3 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 72: Saving Hop Settings

    STORE function (see Storing and recalling set-ups in chapter 12, System Operations) and therefore only one complete hop sequence can be stored. The hop setting is maintained when the system defaults are reloaded. 11-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 73: System Operations

    ENTER to execute the store function.To recall a set-up, press the RECALL key; the display shows the following: RECALL STORE NO: 0 0 FOR DEFAULTS ENTER TO EXECUTE 12-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 74: System Settings

    CLOCK IN/OUT socket must be driven by a master generator set to CLOCK BNC=OUTPUT. Because setting slave mode cancels any gate, trigger, sweep or FSK mode currently running, a warning message is shown when this option is selected and it is necessary to 12-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 75 System Operations System Settings press ENTER to execute; pressing ESCAPE will return the setting to INPUT or OUTPUT. Further details are given in chapter 13, Synchronizing Generators. 12-3 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 76 Users Manual 12-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 77: Synchronizing Generators

    Chapter 13 Synchronizing Generators Title Page Introduction......................13-2 Synchronizing principles ................... 13-2 Connections for synchronization ............... 13-2 Generator set-ups ....................13-2 Synchronizing ....................13-3 13-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 78: Introduction

    -90 ° phase to achieve the same result. Hardware delay becomes increasingly significant as frequency increases causing additional phase delay between the master and slaves. However, these delays can be largely nulled-out by ‘backing-off’ the phase settings of the slaves. 13-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 79: Synchronizing

    Once synchronized only the clock connections need be maintained; however, any change to the set-up of a slave, such a phase change, will cause synchronization to be lost as the waveform memory is rewritten with the new parameter values, and re-synchronization will be necessary. 13-3 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 80 Users Manual 13-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 81: Calibration

    Chapter 14 Calibration Title Page Introduction......................14-2 Equipment Required ..................14-2 Calibration Procedure ..................14-2 Setting the Password..................14-2 Using the Password to Access Calibration or Change the Password .... 14-3 Calibration Routine ..................14-3 14-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 82: Introduction

    Enter a 4-digit password from the keyboard; the display will show the message NEW PASSWORD STORED! for two seconds and then revert to the main menu. If any keys other than 0-9 are pressed while entering the password the message ILLEGAL PASSWORD! will be shown. 14-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 83: Using The Password To Access Calibration Or Change The Password

    CAL 02 dc offset +ve full scale. Adjust for 10 V ±20 mV CAL 03 dc offset −ve full scale. Check for −10 V ±20 mV CAL 04 Multiplier zero offset. Adjust for minimum CAL 05 14-3 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 84 Clock calibrate. Adjust for 10.00000 MHz at CAL 20 MAIN OUT or 27.48779 MHz at rear panel CLOCK IN/OUT. Set within ±1 ppm. Press ENTER twice to store new values and exit the calibration mode. 14-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 85: Application Examples

    Simple Main Generator Operation..............15-2 Pulse Trains......................15-2 Low Duty Cycle Pulse Trains ................15-3 Multiple Pulses ....................15-4 Variable Transition Pulse Waveforms ............... 15-4 Slew-Limited Transitions ................15-4 Band-Limited Pulses ..................15-5 Pulses With Overshoot .................. 15-5 15-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 86: Introduction

    This setting will give the standard TTL levels of 2.4V and 0.4V (into 50Ω) as a 1:1 duty cycle 1 kHz pulse train. Move the cursor to the SYM field with the SYMMETRY key and adjust the symmetry with the rotary control to create pulses with different mark:space ratios. 15-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 87: Low Duty Cycle Pulse Trains

    Note that at main generator frequencies above 30 kHz phase control of pulse waveforms is restricted unless waveform generation is in low frequency mode (see Waveform generation options in chapter 5, Main Generator Operation); this ultimately limits the minimum width of pulses at very low repetition rates. 15-3 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 88: Multiple Pulses

    Select the Trigger menu by pressing EDIT, TRIG, and set SOURCE=TGEN, i.e. internal trigger generator. Set the TGEN period to 1 ms (1.000 kHz), the BURST COUNT t0 0.005 and the PHASE to -90°. If it is off, set trigger mode on by pressing TRIG again. 15-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 89: Band-Limited Pulses

    FREQ, 2, 0, kHz, EDIT, TRIG. Move the edit cursor to the PHASE field and use the rotary control to adjust the phase which will vary the amplitude of the flat portion, creating variable overshoot. sha0016f.emf 15-5 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 90 Users Manual 15-6 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 91: Remote Operation

    FSK Parameters ..................... 16-13 Staircase and Arbitrary Waveforms .............. 16-14 Waveform Generation Options..............16-14 Hop Commands ..................... 16-14 System Commands ..................16-15 Status Commands ..................16-15 Miscellaneous Commands................16-16 Phase Locking Commands ................16-16 Remote Command Summary................16-17 16-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 92: Remote Operation

    (which doubles as the LOCAL key); however, the effect of this action will remain only until the instrument is addressed again or receives another character from the interface, when the remote state will once again be entered. 16-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 93: Rs232 Interface

    The daisy chain consists of the transmit data (TXD), receive date (RXD) and signal ground lines only. There are no control/handshake lines. This makes XON/XOFF protocol essential and allows the inter-connection between instruments to contain just 3 wires. The wiring of the adaptor cable is shown below: 16-3 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 94: Rs232 Character Set

    04H. The controller and instrument can now freely use all 8 bit codes and binary blocks but all interface control codes are ignored. To return to addressable mode the instrument must be powered off. 16-4 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 95 The interface code 13H (XOFF) may be sent at any time by a listener (instrument or controller) to suspend the output of a talker. The listener must send 11H (XON) before the talker will resume sending. This is the only form of handshake control supported by the addressable RS232 mode. 16-5 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 96: Full List Of Addressable Rs232 Interface Control Codes

    Query Error Register and the response formatter to be reset thus clearing the output queue. The parser will then start parsing the next <PROGRAM MESSAGE UNIT> from the input queue. See Status Reporting below for further information. 16-6 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 97: Gpib Parallel Poll

    Status Reporting This section describes the complete status model of the instrument. Note that some registers are specific to the GPIB section of the instrument and are of limited use in an RS232 environment. 16-7 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 98: Standard Event Status And Standard Event Status Enable Registers

    The bit will be cleared after the Response Message Terminator has been sent. Bit 3 Not used. Bit 2 Not used. Bit 1 Not used. Bit 0 Not used. 16-8 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 99: Status Model

    If for any reason an error is detected at power up in the non-volatile ram a warning will be issued and all settings will be returned to their default states as for a RST command. 16-9 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 100: Remote Commands

    A <PROGRAM MESSAGE UNIT> is any of the commands in the remote commands list. The <PROGRAM MESSAGE UNIT SEPARATOR> is the semicolon character 3BH (;). <PROGRAM MESSAGES> are separated by <PROGRAM MESSAGE TERMINATOR> elements which may be any of the following: 16-10 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 101: Command List

    The commands in the lists below which begin with an asterisk * are those specified by IEEE Std. 488.2 as Common commands. All will function when used on the RS232 interface but some are of little use. 16-11 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 102: Function Selection

    Set sweep marker period to <nrf> seconds SWPMKRPER <nrf> Set sweep mode to <BTOE> (beginning to end) or <ETOB> SWPMODE <cpd> (end to beginning) Set sweep law to <LOG> or <LIN> SWPLAW <cpd> Set sweep time to <nrf> seconds SWPTIME <nrf> 16-12 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 103: Trigger And Gate

    Executes a trigger which will have the same effect as pressing * TRG the MAN/SYNC key. MAN/REMOTE trigger source must be selected first. GPIB Group Execute Trigger command (GET) will perform the same function as * TRG. 16-13 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 104: Staircase And Arbitrary Waveforms

    <freq> is the main generator frequency in Hz. <level> is the output level expressed in V p-p into an open circuit. <func> is any of <SINE>, <SQUARE>, <TRIAN>, <POSPUL>, <NEGPUL>, <POSRAMP>, <NEGRAMP>, <STAIR> or <ARB>. <offset> is the dc offset in volts. 16-14 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 105: System Commands

    1<rmt>, if the local message is true. Sets the Operation Complete bit (bit 0) in the Standard Event * OPC Status Register. This will happen immediately the command is executed because of the sequential nature of all operations. 16-15 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 106: Miscellaneous Commands

    CLOCKBNC <cpd> (phase lock) Abort on unsuccessful phase locking operation. If no ABORT operation was in progress the command is ignored. If an operation is aborted then error 136 is placed in the execution error register. 16-16 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 107: Remote Command Summary

    Query the selected arbitrary waveform. ARB? Recall arbitrary waveform from store <nrf> ARBRCL <nrf> Save arbitrary waveform to store <nrf> with name <cpd>. ARBSAV <nrf>, <cpd> Set AUX output mode to <AUTO>, <HF> or <LF> AUX <cpd> 16-17 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 108 Set output level to <nrf> pd V rms PDRMS <nrf> Set main period to <nrf> seconds PER <nrf> Set phase to <nrf> degrees PHASE <nrf> Set positive pulse function POSPUL Set positive ramp function POSRAMP Define a new arbitrary function. SETARB <nrf>,...<nrf> 16-18 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 109 Set triangle function TRIAN Set trigger mode to <ON> or <OFF> TRIG <cpd> Set trigger source to <EXT>, <MAN> or <TGEN> TRIGSRC <cpd> Set output impedance to <nrf>; only 50 and 600 are legal. ZOUT <nrf> 16-19 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 110 Users Manual 16-20 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 111: Appendices

    AC Supply Voltage Settings ................A-1 DDS Operation and Further Waveform Considerations ........B-1 Application Information Notes................C-1 Warning and Error Messages ................D-1 Factory System Defaults ..................E-1 Waveform Manager Plus..................F-1 Front and Rear Panels ..................G-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 112 Users Manual Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 113: A Ac Supply Voltage Settings

    5. Change the fuse to one of the correct rating, see below. Caution To comply with safety standard requirements the operating voltage marked on the rear panel must be changed to clearly show the new voltage setting. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 114 To replace the fuse, disconnect the mains lead from the inlet socket and withdraw the fuse drawer below the socket pins. Change the fuse and replace the drawer. The use of makeshift fuses or the short-circuiting of the fuse holder is prohibited. Fluke-Direct .com info@Fluke-Direct.com...
  • Page 115 360 ° divided by 1024. Instead of using a counter to generate sequential RAM addresses, a phase accumulator is used to increment the phase. Fluke-Direct .com info@Fluke-Direct.com...
  • Page 116 /(number of points) For sine waves the filter permits the waveform to be reproduced accurately up to the Nyquist limit (f /2), although in this generator a practical limit of 10 MHz is set. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 117: Dds Operation And Further Waveform Considerations

    HF AUX OUT. For this reason, the default (AUTO) setting for the auxiliary output is LF mode at all frequencies for main waveforms of ramp, staircase, arbitrary and LF square waves and pulses. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 118 40 % of the cycle and the 180 ° to 360 ° points are scaled up to fit into the remaining 60% of the cycle. Start/stop phase still works with the true phase settings but they are not necessarily at the expected point on the waveform, particularly for more complex wave shapes. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 119: C Application Information Notes

    − × STOP START For linear sweeps RAMPTIME ⎛ ⎞ ⎜ ⎟ ⎝ RAMPTIME ⎠ STOP For log sweeps START where t = 5e (5 ms) for ramp times above 200 ms, Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 120 0.5 ° and the jitter will be determined by the crystal oscillator in the master generator. Take care to keep the clock and synchronization cables short and of good quality. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 121: D Warning And Error Messages

    DC Offset change by Output level Symmetry too wide for func/freq Symmetry changed by function/freq DC Offset atten by Output level Trigger Generator max res 20us Phase angle change by function/freq This instrument is not calibrated Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 122 Error Messages - Remote Control Only The following messages are only relevant to remote control operation. Illegal store number requested Byte value outside the range 0 to 255 Illegal value in staircase data Illegal ARB store Illegal value in arbitrary data Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 123: E Factory System Defaults

    DC offset: Symmetry: 50 % Trigger parameters Source: TGEN: 1 ms Burst count: Phase: 0 ° Gate parameters Source: TGEN 1 ms FSK parameters Freq A 10 kHz Freq B 10 MHz Source TGEN 1 ms Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 124 5 MHz Mode: Beginning to end Law: Ramp time: 50 ms Trig Source: Continuous Noise Noise OFF Hop parameters Hop OFF All parameters are unaffected by RECALL 0 or *RST except Last Step which is set to Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 125: Waveform Manager Plus

    2. Some dialog boxes have a Help button which, when clicked, will open the on-line help file at the section containing the description of that dialog box. 3. From most windows and dialogues the F1 key will open the help file at the relevant section. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 126 A project may be placed anywhere, in any directory (folder) and all waveform files for that project will be stored in a structure below that directory. A project is identified by a user defined name. Each project maintains its own library of expressions. Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

  • Page 127: Front And Rear Panels

    Appendix G Front and Rear Panels Front panel sha0025f.gif Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 128 Users Manual Rear panel sha0027f.gif Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 129 3-2 filter, 5-9, B-3 GPIB, 3-4 formats rear panel, 3-2 GPIB command, 16-10 RS232, 3-4 RS232 command, 16-10 contrast frequency display, 4-3 stop, 5-10 control codes frequency locking, 13-2 remote, 16-5 frequency shift keying, 9-2 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 130 15-2, E-1 error, 5-6 power-up, 12-2 warning, 5-6 system, 12-2 modes setups burst, 7-2 store/recall, 12-1 gated, 7-2, 7-4 software hop, 11-2 Waveform Manager Plus, F-1 sweep, 6-2 specifications, 1-4 sweep - narrow, C-1 square wave, 5-9 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 131 5-5 sync out, 3-3 synchronization, 13-2 system settings, 12-2 —T— trigger external, 7-2 source, 7-3 trigger generator, 7-2 trigger/sweep output, 3-3, 5-10 —V— VCA in, 3-3 —W— warning messages, D-1 warnings, 5-6 Waveform Manager Plus, F-1 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...
  • Page 132 Fluke-Direct .com info@Fluke-Direct.com 1.888.475.5235...

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