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GAO-FGD-101
GAO-FGD-101

GAOTek Function Generator (10 MHz~60 MHz)

ID: GAO-FGD-101
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Overview

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.

Features

  • 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

Technical Specifications

Model GAO-FGD-101 A GAO-FGD-101 B GAO-FGD-101 C
Channel Dual
Frequency Output 10 MHz 25 MHz 60 MHz
Sample Rate 125 MS/s 250 MS/s
Vertical Resolution 14 bits
Waveform
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
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)
Arbitrary Waveform
Wave Length 2 pts to 8 K pts 2 pts to 1 M pts
Non-volatile Memory 64 M Byte
Modulation
Modulation Waveform AM, FM, PM, FSK, PWM, Sweep, and Burst
Modulation Frequency 2 mHz to 20.00 KHz (FSK 1 μHz – 100 KHz)
Cymometer
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
Gain X 10
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

Communication

Interface

USB host, USB device, RS232
Mechanical
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)

Additional information

Ordering Information

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

Applications

  • Designing and Debugging
  • Circuit Function Test
  • Identification of signals logic information
  • Education and training
  • Mixed signal circuit test

Standard Accessories:

  • 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

Optional

  • Soft carry bag
  • Battery

Front/Rear Panel and User Interface
Front Panel

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.
18 Waveform selection

Buttons

Includes:
Sine ,
Square  ,
Ramp ,
Pulse ,
Noise  and
Arbitrary waveform .
When a waveform is selected, the backlight of the button turns on.
19 Power button Turn on/off the generator

Rear Panel

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.

User Interface

1 Current channel
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.

Power-On Check

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.

Power On

  • 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

  1. To Switch Channels for Display:Press  button to switch channel displayed on the screen between CH1 and CH2.
  2. To Display/Edit Both Channels:Press  button to display the parameters of both channels.
  3. To switch channel: Press  to switch the editable channel.
  4. To select waveform: Press Waveform selection buttons to select waveform of current channel.
  5. To select parameter: Press to choose the Parameter 1 to Parameter 4; Press it again to switch the current parameter such as Frequency/Period.
  6. 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.

Channel Copy

  1. In signal output interface, press the knob on the front panel to enter Channel Copy menu.
  2. 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.

SCPI

The waveform generator supports SCPI, and the users can operate and control the device by USB port.

Troubleshooting

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.

General Care

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.

Cleaning

  1. Inspect the instrument as often as operating conditions require.
  2. 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.
  3. Clean the instrument with a wet soft cloth not dripping water. It is recommended to scrub with soft detergent or fresh water.
  4. To avoid damage to the instrument, do not use any corrosive chemical cleaning agent.

 

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