GAOTek Function Generator (10 MHz ~ 60 MHz) combines Arbitrary Waveform Generation and Function Generation and comes with advanced Direct Digital Synthesizer (DDS) technology to provide stable, precise, pure and low distortion signal. The user-friendly interface design and panel layout provide an exceptional user experience and supports USB storage. It provides high resolution TFT LCD display. This dual-channel multi-function generator has a vertical resolution of 14 bits and comprehensive waveform output of 5 basic waveforms and 45 built-in arbitrary waveforms.
- Advanced DDS technology with maximum 60 MHz frequency output
- Maximum Sample rate: 125 MSa/s, Frequency resolution: 1 μHz (for GAO-FGD-101A and GAO-FGD-101B)
- Sample rate: 300 MSa/s, Frequency resolution: 1 μHz (for GAO-FGD-101C)
- Vertical resolution: 14 bits with maximum 1 M waveform record length
- Abundant waveform output: 5 basic waveforms and 45 built-in arbitrary waveforms
- Abundant modulation functions along with output linear/logarithm sweep and pulse string waveform
- Comprehensive modulation functions include AM, FM, PM, FSK, PWM, Sweep, and Burst
- High-accuracy frequency counter integrated and supported range 100 MHz – 200 MHz
- Supported SCPI
- Standard interface: USB port, USB (type B) connector.
- 4 in high resolution (480 × 320 pixels) TFT LCD display
|Model||GAO-FGD-101 A||GAO-FGD-101 B||GAO-FGD-101 C|
|Frequency Output||10 MHz||25 MHz||60 MHz|
|Sample Rate||125 MS/s||250 MS/s|
|Vertical Resolution||14 bits|
|Standard Waveform||Sine, Square, Pulse, Ramp, and Noise|
|Arbitrary Waveform||Exponential Rise, Exponential Fall, Sin(x)/x, Step Wave, and others, total 45 built-in waveforms, and user-defined arbitrary waveform|
|Frequency (resolution 1 μHz)|
|Sine||1 μHz – 10 MHz||1 μHz – 25 MHz||1 μHz – 60 MHz|
|Square||1 μHz – 5 MHz||1 μHz – 30 MHz|
|Pulse||1 μHz – 5 MHz||1 μHz – 10 MHz|
|Ramp||1 μHz – 1 MHz|
|Noise||25 MHz (-3 dB) (typical)|
|Arbitrary Waveform||1 μHz – 10 MHz|
|Amplitude||1 m Vpp – 10 Vpp (50 Ω), 1 m Vpp – 20 Vpp (high impedance)|
|Resolution||1 m Vpp or 4 digits|
|DC Offset Range (AD+DC)||±5 V (50 Ω), ±10 V (high impedance)|
|DC Offset Range Resolution||1 mV or 4 digits|
|Load Impedance||50 Ω (typical)|
|Wave Length||2 pts to 8 K pts||2 pts to 1 M pts|
|Non-volatile Memory||64 M Byte|
|Modulation Waveform||–||–||AM, FM, PM, FSK, PWM, Sweep, and Burst|
|Modulation Frequency||–||–||2 mHz to 20.00 KHz (FSK 1 μHz – 100 KHz)|
|Function||–||–||Frequency Period, +Width, -Width, +Duty, and -Duty|
|Frequency range||–||–||100 MHz ~ 200 MHz|
|Frequency Resolution||–||–||6 digits/s|
|Power Amplifier Specification (Optional)|
|Bandwidth at Full Power||DC – 100 kHz|
|Offset||< 7 %|
|Input Impedance||50 kΩ|
|Output Impedance||<2 Ω|
|Max Input Voltage||2.2 Vpp|
|Max Output Power||10 W|
|Max Output Voltage||22 Vpp|
|Output Slew Rate||10 V/us|
|Input / Output|
|Display||4 inch (480 × 320 pixels) TFT LCD|
|Type||External reference clock input / output||Counter|
external modulation input / output,
external trigger input / output, external reference clock input / output
|USB host, USB device, RS232|
|Dimension (W×H×D)||9.25 in x 4.33 in x 11.61 in (235 mm × 110 mm × 295 mm)|
|Weight (without package)||6.61 lbs (3.00 kg)|
|Model No.||Bandwidth||Sampling Rate||Arbitrary Wave Length||Vertical Resolution||Frequency Resolution|
|GAO-FGD-101 A||10 MHz||125 MSa/S||8 K pts||14 bits||1 μHz|
|GAO-FGD-101 B||25 MHz|
|GAO-FGD-101 C||60 MHz||300 MSa/S||1 M pts|
- Designing and Debugging
- Circuit Function Test
- Identification of signals logic information
- Education and training
- Mixed signal circuit test
- A power cord that fits the standard of the destination country
- A CD (PC link application software)
- User manual
- A USB cable
- Probe and probe adjust
- Logic Analyzer Module
- Soft carry bag
Front/Rear Panel and User Interface
|1||LCD||Display the user interface|
|2||Menu selection buttons||Include 5 buttons: F1 – F5, activate the corresponding menu|
|3||Number keys||Input parameters, include: number, point and plus/minus sign|
|4||Knob||Change the current highlighted number, also can be used to select file location or switch the character of the soft keyboard when entering file name.|
In Sweep and N-Cycle Burst, if you choose Source as “Manual”, every time you press this knob, the generator will be triggered once.
In signal output interface, press this knob to enter Channel Copy menu.
|5||Direction key||Move the cursor of the focused parameter or select the file locations|
|6||Save button||Store/recall the user-defined arbitrary waveform data|
|7||Utility button||Set the auxiliary system function.|
|8||Help button||View the build-in help information|
|9||CH2 Output Control||Turn on/off the output of CH2. The backlight will be lighted when CH2 is tuned on.|
|10||CH2 Output||Output signal of CH2|
|11||Foot stool||Make the instrument to be tilted for ease of operation|
|12||CH1 Output Control||Turn on/off the output of CH1. The backlight will be lighted when CH1 is tuned on.|
|13||CH1 Output||Output signal of CH1|
|14||CH1/2 button||Switch channel displayed on the screen between CH1 and CH2.|
|15||Modulation (Mod)||Generate the Modulated waveforms, Sweep and Burst; these functions are only used for CH1.|
|16||Both button||Display the editable parameters of both channels. When the function is enabled, the backlight of the button turns on.|
|17||USB port||Connect with an external USB device, such as connect a USB device to the instrument.|
Arbitrary waveform .
When a waveform is selected, the backlight of the button turns on.
|19||Power button||Turn on/off the generator|
|1||Power socket||AC input connector|
|2||Fuse||The rating is 250 V, F2AL.|
|3||Power switch||Switch between 110 V and 220 V.|
|4||USB (type B) connector||This can be used to connect a USB type B controller.|
Connect with an external device, such as connected to a PC and controlled via PC software.
|5||Ext Mod In Connector||External modulation input, use it as external signal source.|
|6||Ext Trig/Burst/Fsk In connector||This signal can be used as external signal source in Sweep, Burst and FSK mode.|
|7||Ref Clk/Counter In Connector||To accept an external clock signal, or to accept the input signal of counter.|
|8||Ref Clk Out Connector||To synchronize generators. Output a clock signal generated by the crystal inside the generator.|
|9||P-Output connector||Signal output for the Power Amplifier.|
|10||P-Input connector||Signal input for the Power Amplifier.|
|2||Parameter 1, display parameter and edit the focused parameter|
|3||Current signal type or mode|
|4||The setting menu of current signal or mode|
|5||Parameter 3, display parameter and edit the focused parameter|
|6||Parameter 2, display parameter and edit the focused parameter|
|7||Display current waveform|
|8||Offset/low level, depends on the highlighted menu item on the right|
|9||Amplitude/high level, depends on the highlighted menu item on the right|
|10||Frequency/period, depends on the highlighted menu item on the right|
|11||Load, High Z represents high resistance|
Foot Stool Adjustment
Unfold the foot stools on the bottom of the generator, as ⑪ in the Figure.
AC Power Input Setting
Adopt 100 V – 120 V AC or 220 V – 240 V AC power source. Users should regulate the voltage scale of the Power Switch according to the standards in their own country (see Figure) at the rear panel.
To change the voltage scale of the instrument, do the following steps:
- Turn off the power button at the front panel and remove the power cord.
- Regulate the Power Switch to the desired voltage scale.
- Connect the instrument to the AC supply using the supplied power cord.
Warning: To avoid electric shock, the instrument must be grounded properly.
- Press down the power button at the front panel, the screen shows the boot screen.
Front Panel Operation
To Set channels
- To Switch Channels for Display:Press button to switch channel displayed on the screen between CH1 and CH2.
- To Display/Edit Both Channels:Press button to display the parameters of both channels.
- To switch channel: Press to switch the editable channel.
- To select waveform: Press Waveform selection buttons to select waveform of current channel.
- To select parameter: Press to choose the Parameter 1 to Parameter 4; Press it again to switch the current parameter such as Frequency/Period.
- To edit parameter: Turn the knob to change the value of cursor position. Press direction key to move the cursor. (The number keys cannot be used to input.)
To Turn On/Off Output of Channels
Press to turn on/off output of the corresponding channel. The indicator will be lighted when the corresponding channel is tuned on.
- In signal output interface, press the knob on the front panel to enter Channel Copy menu.
- Press to select From CH2 To CH1, or press to select From CH1 To CH2.
To Set signals
The following describes how to set and output Sine, Square, Ramp, Pulse, Noise, Arbitrary, DC signals and copy channel.
To Output Sine Signals
Press button to call the user interface of Sine signal, the Sine waveform parameters can be set by operating the Sine setting menu on the right.The parameters of Sine waveform are: Frequency/Period, Amplitude/High Level, Offset/ Low Level. You can operate the menu by using the menu selection buttons on the right.
The User Interface of Sine Signal
To Set the Frequency/Period
Press button, the chosen menu item is then highlighted; the focused parameter is displayed in Parameter 1. Press button to switch between Frequency/Period.
Two methods to change the chosen parameter:
- Turn the knob to change the value of cursor position. Press direction key to move the cursor.
- Press a number key in the front panel, an input box will pop up; keep going to input the value. Press direction key to delete the last number. Press to choose the unit, or press to go to next page and choose other units. Press to cancel the input.
To Set the Amplitude
Press , confirm whether the “Ampl” menu item is highlighted; if not, press to switch into “Ampl”. In Parameter 2, a cursor appears under the value of amplitude. Use the knob or the number keys to set the desired value.
To Set the Offset
Press , confirm whether the “Offset” menu item is highlighted; if not, press to switch into “Offset“. In Parameter 3, a cursor appears under the value of offset. Use the knob or the number keys to set the desired value.
To Set the High Level
Press , confirm whether the “Hi_Level” menu item is highlighted; if not, press to switch into “Hi_Level“. In Parameter 2, a cursor appears under the value of amplitude. Use the knob or the number keys to set the desired value.
To Set the Low Level
Press , confirm whether the “Lo_Level” menu item is highlighted; if not, press to switch into “Lo_Level“. In Parameter 3, a cursor appears under the value of offset. Use the knob or the number keys to set the desired value.
To Output Square Signals
Press button to call the user interface of Square signal, the Square waveform parameters can be set by operating the Square setting menu on the right.The parameters of Square waveform are: Frequency/Period, Amplitude/High Level, Offset/ Low Level, Duty. You can operate the menu by using the menu selection buttons on the right.
How to Use:
Connect the input signal to the P-Input connector on the rear panel; the P-Output connector outputs the amplified signal.
To Use Built-in Help
- Press Help function button, the catalog will display in the screen.
- Press F1 or F2 to choose help topic, or just turn the knob to choose.
- Press F3 to view the details about the topic; press F5 to go back to the catalog.
- Press Help again to exit the help, or just do other operations.
Communication with PC
The Waveform Generator supports communications with a PC through USB port. You can use the ultrawave communication software to set the parameters, control the output of the Waveform Generator.The Waveform Generator supports communications with a PC by SCPI commands through USB port.
Here is how to connect with PC.
- Install the ultrawave communication software on the supplied CD.
- Connection: Use a USB data cable to connect the USB (type B) connector on the rear panel of the Waveform Generator to the USB port of a PC.
- Install the driver: When the Waveform Generator is turned on, a dialog will appear on the PC screen and guide you to install the USB driver. The driver is in the “USBDRV” folder under the directory where the ultrawave communication software is installed.
- Port setting of the software: Run the ultrawave software; click “Communications” in the menu bar, choose “Ports-Settings”, in the setting dialog, choose “Connect using” as “USB”. After connect successfully, the connection information in the bottom right corner of the software will turn green.
The waveform generator supports SCPI, and the users can operate and control the device by USB port.
The instrument is powered on but no Display.
- Check if the power is connected properly.
- Check if the Power Switch is in the proper voltage scale.
- Check if the fuse which is below the AC Power socket is used appropriately and in good condition (the cover can be pried open with a straight screwdriver).
- Restart the instrument after the steps above.
The measured value of output signal amplitude dis-accords to the displayed value.Check if the actual load matches the set one.
Do not store or leave the instrument where the liquid crystal display will be exposed to direct sunlight for long periods of time.To avoid any damage to the instrument, do not exposed it to any sprays, liquids, or solvents.
- Inspect the instrument as often as operating conditions require.
- To clean the instrument exterior, perform the following steps:
(a)Wipe the dust from the instrument surface with a soft cloth. Do not make any scuffing on the transparent LCD protection screen when clean the LCD screen.
(b)Disconnect power before cleaning your instrument.
- Clean the instrument with a wet soft cloth not dripping water. It is recommended to scrub with soft detergent or fresh water.
- To avoid damage to the instrument, do not use any corrosive chemical cleaning agent.