B+K precision 4014B Manuel utilisateur

Model: 4014B, 4040B, 4045B

Function Generator

Software Help Document

Overview

The B&K Precision 4014B/4040B and 4045B provides a standard set of protocols that

allows for remote control over PC. This software allows for basic controls and virtual

front panel emulation to allow you to control most of the adjustable parameters of the

instrument.

Note: The model 4045B includes the arbitrary waveform function, however this

software does not support configuring for this output. To create arbitrary waveforms,

please visit www.bkprecision.com and download the WaveX software.

System Requirements

The below system requirements must be met to run this software:

- Windows XP/Vista/7 (32-bit or 64-bit)

- 512MB or higher

- USB Drivers installed (download from www.bkprecision.com )

Getting Started

Panel Controls

1 Initialize/Communication Control

2 Display Panel

3 Waveform Buttons

4 Waveform Parameter Control

5 Save/Recall Settings Control

6 Trigger Settings Control

7 Modulation Settings Control

8 Sweep Settings Control

9 Output Control

Enable Echoing

The instrument may be shipped with default setting for character echo disabled. In

order to use the software, echoing must be enabled.

To enable echoing, follow the steps below:

1. Press “UTIL” and “F4” to select “Counter”.

2. Now, press “F4” three times to enter a system menu.

3. Press “F2” to select “Echo” and use the rotary knob to change Echo to “ON”.

4. Afterwards, press the “Sine” waveform button or any of the waveform buttons to

exit the menu. Echo is not enabled.

Connecting with the Instrument

The first thing to do when using the software is to have it successfully connected to the

instrument. You will use the controls shown below:

Initialize connection

When the software application is launched, it automatically detects the available serial

COM ports registered with Windows.

From the drop-down menu, select the COM port number that is linked with the USB

virtual COM port of the instrument.

When you initially connect to the USB port of the instrument, it will ask you to install the

USB drivers. Follow the instructions in the user manual to properly install the USB

drivers. When finished, go to “Device Manager” in Windows Properties to verify which

COM port the instrument is assigned to. It should say BK Precision USB to Serial

Converter (COM#) where #is the COM port number that you will use to connect to the

instrument.

Click the “Connect” button and wait a few seconds. The round red light will turn green

to indicate that it’s successfully connected to the instrument. During this time, the

software will get information from the instrument to update most of the currently

configured information, such as Waveform Shape, Frequency, Amplitude, Offset,

Trigger Mode, Sweep, and Modulation. When finished, it will show the identification

string at the bottom of the software indicating the model and the firmware version of the

instrument.

Close connection

When you want to stop or disconnect communication to/from the instrument, click the

“Close Port” button. The COM port will close and disable any communication to/from

the instrument.

Configure Basic Waveform Output

There are 5 parameters that can be configured to setup a basic waveform for output:

Frequency, Amplitude, DC Offset, Duty Cycle/Symmetry, Waveform Shape.

The controls to adjust these parameters are shown below:

Set Frequency

To set the frequency of the waveform, enter the numeric value in the input box next to

Set Frequency . Afterwards, press either “MHz”, “kHz”, or “Hz” button to set the

frequency and its corresponding unit.

For example, to set the waveform to 1.2345 kHz, type in “1.2345” in the input box and

press “kHz”.

Note: The minimum and maximum frequency limits will apply. An error will occur if you

enter a frequency outside the supported range. The limits will vary depending on the

waveform shape selected.

Set Amplitude/DC Offset

To set the amplitude or DC offset of the waveform, enter the numeric value in the input

box next to Set Amplitude or Set Offset . Afterwards, press “V” to set the amplitude or

offset in volts. The acceptable range is: 0.010 V (10 mV) to 10 V.

Note: Amplitude and Offset have some constraints due to hardware limitations. In any

instance, the amplitude and DC offset must satisfy the below formula, or it becomes an

invalid setting:

𝑉𝑝𝑝

2+|𝑂𝑓𝑓𝑠𝑒𝑡|≤5 𝑉

Set Duty Cycle/Symmetry

To set the duty cycle (square) or symmetry (triangle) of the waveform, enter the numeric

value in the input box next to Set Duty Cycle/Symmetry . Afterwards, press the “%”

button.

Square wave duty cycle can be adjusted from 20% to 80%, but frequency must be less

than or equal to 2 MHz.

Triangle/ramp wave symmetry can be adjusted from 1% to 99%, but frequency must be

less than or equal to 200 kHz.

Change Waveform Shape

To change the waveform shape, select the “Sine”, “Ramp”, or “Square” buttons. Once

changed, the display panel will also change the illustration of the waveform.

Save/Recall Settings

The instruments can save or recall settings to and from within internal non-volatile

storage memory. 4014B can store up to 9 user settings and 4040B and 4045B can

store up to 19 user settings. One memory location is reserved for the default setting

and cannot be changed.

To controls to save/recall settings are:

Save Settings

Configure the instrument to the settings you want to save. Then, enter a number

between 1 – 9 (4014B) or 1 – 19 (4040B and 4045B) in the Memory location input box.

Then click the “Save” button and all the current instrument settings will be stored to the

designated memory location.

Recall Settings

Enter a number between 1 – 9 (4014B) or 1 – 19 (4040B and 4045B) in the Memory

location input box which contains the instrument settings you want to recall from a

previous save.

Then click the “Recall” button and the instrument will be updated with those settings.

Restore to Factory Default

Click the “Recall Factory Default” button to set the instrument back to factory default

settings.

Trigger Setup

To configure the trigger settings, the first configure the Trigger Mode.

Configure Trigger Mode

The instrument has four different triggering modes: Continuous, Triggered, Gate, Burst.

Continuous – The instrument will output the waveform continuously without the need to

specify any trigger parameters. This is the default mode of the instrument, and it’s also

the mode used for sweep function and modulation.

Triggered – The instrument can provide a user configurable rate to internally trigger

one cycle of the waveform per trigger. It can also be configured for external triggering

where an external signal is used to trigger one cycle of the waveform.

Gated – The instrument can provide a user configurable rate to internally gate trigger

the waveform. When gate is high the output will be a continuous waveform, and when

low it will be off. External trigger can also be used for gated triggering.

Burst – Burst allows the instrument to trigger multiple cycles of the waveform within a

given trigger rate internally, or from an external trigger signal.

Use the drop down menu to select the trigger mode, and then press the “Set” button

next to it to set to that mode.

Note: Modulation or sweep functions will be disabled when trigger mode is set because

these functions require operating in Continuous mode only.

Configure Trigger Source

The source of the trigger can come from internally of the instrument or from an external

signal connected to the rear Trig In terminal.

To set for internal trigger, select Internal under the Trigger Source drop-down menu,

then press the “Set” button next to it.

To set for external trigger, select External under the Trigger Source drop-down menu,

then press the “Set” button next to it.

Configure Trigger Rate

This option is available and applicable for when Trigger Mode is configured to

Triggered, Gated, or Burst. Also, trigger source must be set to Internal, as this

parameter uses the internal trigger source.

To configure, enter a value in the input box and press either “us”, “ms”, or “s” to set the

time unit.

The trigger rate range is 10 ms – 10 s. However, depending on the frequency of the

waveform these limits may change. In some cases, if the settings conflict you will get a

“Trig rate short” error on the screen of the instrument. This happens if frequency is set

much higher than the trigger rate can support.

Configure Burst Cycle

This parameter is when Trigger mode is set to Burst. Users can specify the number of

cycles to burst. Acceptable values are from 1 to 65535. However, this range can vary

depending on the frequency of the signal and the rate of the burst.

Enter a value in the input box next to Burst Cycle and press the “Set” button next to it

to configure the number of cycles.

Sweep Setup

Sweep function is available only for Continuous trigger mode. It does not support all

other modes.

There are 4 parameters to configure for sweep function: Start Frequency, Stop

Frequency, Sweep Rate, Sweep Type.

Configure Start and Stop Frequency

Use the input box next to start and stop to enter the start and stop frequency. Use the

“MHz”, “kHz”, and “Hz” button next to the inputs to enter the corresponding frequency

unit.

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