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B+K precision 4040DDS, Operating Manual, Page: 15 / 16

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B+K precision 4040DDS Operating Manual Download Page 15

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.

3.6.6 COUNTER Key

By pressing this key, the build-in Frequency counter is enabled and the frequency of the signal connected to the

TRIG IN connector is displayed. The counter is auto ranging with up to 8 digits resolution.

Counter Menu

3.7 Cursor Movement Keys

Use these keys to move the cursor (when visible) either left or right. They are used in conjunction with the rotary input
knob to set the step size of the rotary input knob.

3.8 Rotary Input Knob

Use this knob to increase and decrease numeric values or to scroll through a list. 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 when you rotate the knob.

Summary of Contents for 4040DDS

Page 1: ...1 Model 4040DDS 20 MHz DDS Function Generator OPERATING MANUAL ...

Page 2: ...m state to state Service Information Warranty Service Please go to our website www bkpreicsion com click on the service repair button to obtain an RMA Return the product in the original packaging with proof of purchase to the address below Clearly state in writing the performance problem and return any leads probes connectors and accessories that you are using with the device Non Warranty Service ...

Page 3: ...LIVE CIRCUITS Instrument covers must not be removed by operating personnel Component replacement and internal adjustments must be made by qualified maintenance personnel Disconnect the power cord before removing the instrument covers and replacing components Under certain conditions even with the power cable removed dangerous voltages may exist To avoid injuries always disconnect power and dischar...

Page 4: ...age indicator Applying a line voltage other than the indicated voltage can destroy the AC line fuses For continued fire protection replace fuses only with those of the specified voltage and current ratings CAUTION This product uses components which can be damaged by electro static discharge ESD To avoid damage be sure to follow proper procedures for handling storing and transporting parts and suba...

Page 5: ...cifications 7 Section 2 Installation 2 1 Introduction 9 2 4 Instrument mounting 9 2 5 Power requirements 9 2 6 Grounding requirements 9 Section 3 Operating Instructions 3 1 General Description 11 3 4 Connectors 12 3 6 Function Keys 13 3 10 Power on Settings 17 ...

Page 6: ...EFORMS Sine 0 1 Hz to 20 MHz Square 0 1 Hz to 20 MHz Triangle Ramp 0 1 Hz to 2 MHz Accuracy 0 01 100 ppm Resolution 4 digits or 10 mHz OUTPUT CHARACTERISTICS Amplitude Range 10mV to 10Vp p into 50 ohms Resolution 3 digits 1000 counts Amplitude Accuracy 2 20mV of the programmed output from 1 01V 10V Flatness 0 5 dB at 1MHz 1 dB to 20 MHz Offset Range 4 5V into 50 ohms depending on the Amplitude set...

Page 7: ...ion 10 Kohms input impedance DC to 20 KHz bandwidth SWEEP CHARACTERISTICS Sweep Shape Linear and Logarithmic up or down Sweep Time 10 ms to 50 s INPUTS AND OUTPUTS Trigger In TTL compatible Max rate 2MHz Minimum width 50ns Sync Out TTL pulse at programmed frequency 50 ohms source impedance Modulation IN 5 Vp p for 100 modulation 10 K input impedance Dc to 20 KHz minimum bandwidth GENERAL Dimension...

Page 8: ...nts are incomplete or if the instrument does not pass the specification acceptance tests notify the local service center 2 4 Instrument Mounting The MODEL 4040DDS Function Generator 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 within conventional temperature limits The uni...

Page 9: ... MUST MEET IEC SAFETY STANDARDS 2 7 Signal Connections Use RG58U 50 Ohm or equivalent coaxial cables for all input and output signals to and from the instrument 1 4 TECHNICAL SUPPORT If this product fails to operate upon arrival contact your B K PRECISION dealer or the factory to arrange for service or exchange To arrange technical assistance or for service contact the factory at B K Precision Cor...

Page 10: ...tors are located on both front and rear panels Figure 3 1 MODEL 4040DDS Front Panel 1 Power ON OFF Applies and removes AC power to the unit 2 Display Window Displays all instrument data and settings on a LCD 3 Function Keys Select the output waveform Sine Square Triangle or the MODE SWEEP and MODULATION 4 Rotary Knob Used to increment decrement numerical values or to scan through the possible sele...

Page 11: ...and from the function generator Output Connector Use this connector to transfer the main output signal from the function generator Trig In Connector Use this connector to apply an external trigger or gate signal depending on the waveform generator setting to the generator This connector is also the input to the build in counter activated by pressing the COUNT pushbutton Sync Out Connector Use this...

Page 12: ...nerator properly 3 6 FUNCTION Keys These keys select the main menus for displaying and changing a parameter function or mode 3 6 1 WAVEFORM Keys The keys select the waveform output and displays the waveform parameters frequency amplitude or offset The SINE RAMP and SQUARE pushbuttons select the output waveform A build in LED indicates the waveform selected Sine Menu FREQ button Frequency Selects a...

Page 13: ...ms are selected the variable SYMMETRY is available Change the waveform symmetry by using the cursor keys and rotary knob If a certain setting cannot be produced the waveform generator will display a warning message Symmetry Menu 3 6 2 MODE Key Selects the output mode CONT Continuous TRIG Triggered and GATE Gated To select the output mode press MODE Each additional MODE key operation selects TRIG G...

Page 14: ...r OFF mode The Sweep Start Stop and Rate parameters are changed with the Utility key LIN Sweep Menu LOG Sweep Menu 3 6 4 UTILITY Key Utility Menu Selects the Sweep parameters editing mode The Sweep Start Sweep Stop and Sweep Rate parameters are displayed and can be modified with the rotary knob Last parameter available on this menu is the Intensity mode Intensity Change the intensity and contrast ...

Page 15: ... the TRIG IN connector is displayed The counter is auto ranging with up to 8 digits resolution Counter Menu 3 7 Cursor Movement Keys Use these keys to move the cursor when visible either left or right They are used in conjunction with the rotary input knob to set the step size of the rotary input knob 3 8 Rotary Input Knob Use this knob to increase and decrease numeric values or to scroll through ...

Page 16: ...en the waveform generator finishes the diagnostic self test routine it enters the power on default settings Table 3 2 lists the factory default settings Table 3 2 Power on Default Settings Key Function Comments FREQUENCY 1000 Hz Wave frequency AMPLITUDE 5 00V Peak to peak output amplitude FUNCTION SINE Output waveform OFFSET 0 00V Zero offset REPETITION 10ms Internal trigger rate MODE CONT Wavefor...

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