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B+K precision 4040DDS Operating Manual

20 mhz dds function generator
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Model 4040DDS
20 MHz DDS Function Generator
OPERATING MANUAL
1

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Summary of Contents for B+K precision 4040DDS

  • Page 1 Model 4040DDS 20 MHz DDS Function Generator OPERATING MANUAL...
  • Page 2 Model 4040DDS– Operating Manual Limited Two-Year Warranty B&K Precision warrants to the original purchaser that its products and the component parts thereof, will be free from defects in workmanship and materials for a period of two years from date of purchase from an authorized B&K Precision distributor.

  • Page 3: Safety Summary

    Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of operation, service, and repair of this instrument. Before applying power, follow the installation instructions and become familiar with the operating instructions for this instrument.
  • Page 4 Model 4040DDS– Operating Manual WARNING: To avoid electrical shock hazard, disconnect power cord before removing covers. Refer servicing to qualified personnel. CAUTION: Before connecting the line cord to the AC mains, check the rear panel AC line voltage indicator. Applying a line voltage other than the indicated voltage can destroy the AC line fuses.

  • Page 5: Table Of Contents

    Contents Section 1 Introduction Description ........................ Specifications......................Section 2 Installation Introduction ....................... Instrument mounting ....................Power requirements ....................Grounding requirements .................... Section 3 Operating Instructions General Description....................Connectors ......................... Function Keys......................3.10 Power-on Settings ......................

  • Page 6: Description

    1.2 Description The MODEL 4040DDS is a versatile high performance function generator that produces Sine, Square and Triangle signals. Waveforms can be output in continuous, triggered or gated mode. AM and FM modulation combined with versatile Sweep capabilities make the unit suitable for a wide range of applications.
  • Page 7 OPERATING MODES Continuous Output continuous at programmed parameters. Triggered Output quiescent until triggered by an internal or external trigger, then one waveform cycle is generated to programmed parameters, up to 2 MHz Gate Same as triggered mode, except waveform is executed for the duration of the gate signal.

  • Page 8: Introduction

    2.5 Power Requirements The MODEL 4040DDS can be operated from any source of 90V to 264V AC, frequency from 48Hz to 66Hz. The maximum power consumption is 30 VA. Use a slow blow fuse UL/CSA approved of 1A as indicated on the rear panel of the instrument.

  • Page 9: Technical Support

    WARNING TO AVOID PERSONAL INJURY DUE TO SHOCK, THE THIRD WIRE EARTH GROUND MUST BE CONTINUOUS TO THE POWER OUTLET. BEFORE CONNECTION TO THE POWER OUTLET, EXAMINE ALL CABLES AND CONNECTIONS BETWEEN THE UNIT AND THE FACILITY POWER FOR A CONTINUOUS EARTH GROUND PATH. THE POWER CABLE MUST MEET IEC SAFETY STANDARDS.

  • Page 10: Operating Instructions

    Operating Instructions 3.1 General Description This section describes the displays, controls and connectors of the MODEL 4040DDS - Function Generator. All controls for the instrument local operation are located on the front panel. The connectors are located on both front and rear panels.

  • Page 11: Connectors

    3.2 Display Window The MODEL 4040DDS has a graphic LCD display that can display up to 122 x 32 dots. When you power-on the unit the SINE is selected and its current settings appear in the display. The bottom displays a status line that corresponds to the function, parameter or mode displayed selected.

  • Page 12: Function Keys

    Model 4040DDS– Operating Manual 3. Use good quality attenuators if it is necessary to reduce waveform amplitudes applied to sensitive circuits. 4. Use termination or impedance-matching devices to avoid reflections. 5. Ensure that attenuators and terminations have adequate power handling capabilities.
  • Page 13 The offset voltage has three ranges as follows: Output Voltage Range Constraints of Amplitude + Offset 1.01 volt to 10.00 volts (Vp-p)/2 + |offset| <= 5 volts 0.101 volt to 1 volt (Vp-p)/2 + |offset| <= 0.5 volts 0.010 volt to 0.100 volt (Vp-p)/2 + |offset| <= 0.05 volts DUTY button - When the Square or Triangle waveforms are selected, the variable SYMMETRY is...
  • Page 14 Model 4040DDS– Operating Manual External Trigger Menu External Gate Menu 3.6.3 SWEEP Key Selects the Sweep Mode and allows LINEAR or LOGARITHMIC sweep mode. To select the sweep mode, press SWEEP. Each pushbutton operation selects the LIN, LOG or OFF mode.
  • Page 15 3.6.5 MODULATION Key Selects the Modulation mode AM or FM . To select the output mode, press MODUL key. Each additional operation selects the AM, FM or OFF mode: AM Menu The AM depth, from 0% to 100%, is changed with the rotary knob. FM Menu The FM deviation frequency is changed with the rotary knob.

  • Page 16: Power-On Settings

    Model 4040DDS– Operating Manual 3.9 Power-On Settings At power-on, the waveform generator performs a diagnostic self-test procedure to check itself for errors. If it find an error, and error code and text appear in the display window. Other error codes appear when you enter and invalid front-panel setting.

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