The GB-4000 has 2000 programmable channels that hold up to 48 frequencies each.

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20 Megahertz Sweep/Function Generator

New 3.1 MHz carrier frequency.

Positive DC offset avaliable.

The only Frequency Generator capable of running 8 frequencies simultaneously

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The GB-4000 is capable of outputting all frequencies from .1 to 20 million hertz.

The GB-4000 is also capable of sweeping from .1 to 20 million hertz.

What separates the GB-4000 from other frequency generators available today?

While some manufacturers may wish to only run one frequency at a time, the GB-4000 can also do this but it has the ability to generate up to 8 individual frequencies in 8 individual pure waveforms and then output them simultaneously for a superior
multi-frequency waveform.

The GB-4000 can output 8 multiple individual frequencies or one individual frequency up to 40,000 hertz. Each frequency is generated and output in a pure waveform. With its 20 MHz (20 million hertz) frequency range it has the ability to generate millions of individual frequencies in pure waveforms which can be put into individual channels and run as sequences of individual or multiple frequencies.

Some manufacturers claim that running multiple frequencies simultaneously causes the purity of each individual waveform to be lost as well as creating the possibility of canceling out or creating other frequencies.

Rarely are other frequencies created and when they are they are generally beat frequencies which are considered beneficial. Those who run multiple frequencies simultaneously are seeking the benefits of using multiple frequencies. The time saving benefit is the main reason people prefer to use multiple frequencies.

Even though frequencies combined together may seem to lose their individual clarity, all the components of each frequency are present. Think of an orchestra playing many different instruments. Though they combine together to make beautiful music, each instrument’s full sound components are still present and nothing is lost.

In order for a frequency to be canceled out, the same frequency must be introduced 180 degrees out of phase. Since the GB-4000 does not output the same frequency 180 degrees out of phase the canceling of a frequency is not possible.

The GB-4000 FREQUENCY GENERATOR Technical Specifications
and Features………

Stand Alone Frequency Generator: Unlike some generators on the market today the GB-4000 was designed
to be a simple to use, easy to operate, stand alone frequency generator requiring no complicated computer
interface to use all of its features. Computer operated generators generally work well but many people do not
feel comfortable having to use a computer to operate all of a frequency generator's options. Our customers
appreciate that they are not required to have a computer to operate any of our instrument's capabilities. The
computer software for programming frequencies into the GB-4000 is an option, not a necessity. Its software
was designed specifically not to be a hard to use computer interface. But it is for programming channels with frequencies and restoring any lost programmed channels that may be accidentally deleted by the user.
Frequency range: 0.1 to 20 million Hertz.
Frequency output: digitally accurate frequencies converted to analog using a DAC for full analog harmonics.
Carrier wave frequency: New 3.1 MHz RF (Radio Frequency) carrier which produces the harmonic sideband frequencies used in the 1930's, 1940's and 1950's equipment.
Carrier wave On and Off capability: Carrier wave can be turned off so the user can operate it as a standard low audio frequency generator.
Waveforms: Square and Sine wave.
LCD: Displays all frequencies on the LCD - not hidden program numbers like other frequency generators.
Programmable channels: 2000.
Channel capability: 48 frequencies in sequence or 8 groups capable of holding 8 frequencies each.
Computer software: GB-4000 programmable software included.
Output multiple frequencies: Up to 8 audio frequencies simultaneously.
Eight audio frequency range: 0.1 to 40,000 Hertz.
Output RF multiple frequencies: Two.
Two RF frequency range: Up to 20 million Hertz.
Duty cycle capability: 10% to 90% square wave duty cycle (Other frequency generators typically can only run a 50% duty cycle)
Gating or pulsing range: 5 - 2200 Hertz.
Gating duty cycle range: 10% - 90%.
Channel sweep: 5 Hertz + and - of the target frequency or frequencies in all 2000 channels.
Standard sweep: 0.1 to 20 million Hertz making it capable of running both narrow and broad range sweeps.
Converge sweeps: jTwo frequencies.
Outputs: Four - 2 red and 2 black (other frequency generators have only 2 outputs).
Power output: Variable up to 2 watts.
Voltage output in audio mode: 40 volts peak to peak.
Voltage output in RF mode:Over 110 volts peak to peak making it 9 times more powerful that standard frequency generators.
L.E.D: RF indicator light confirms RF output.
AC adapters: Two switching 110/240 volt power supplies for worldwide use.

(View our printable brochure)

Want more power than 2 watts? Then the SR-4 may be what you are looking for. It was developed for those who want to have more power. It connects to the GB-4000 using a BNC cable and BNC connections. Like the GB-4000 it outputs through wires. This method has been used for many years and works very well.
The SR-4 1-10 watt amplifier only amplifies the RF (radio frequency) frequencies output by the GB-4000. It amplifies the output of the GB-4000 from 2 watts to about 10 watts depending on the frequency used.

In Audio Mode no RF carrier frequency is used. Also in Audio Mode the GB-4000 outputs about 40 volts peak to peak which is about 0.75 or 3/4 of a watt. The GB-4000 goes up to 40,000 Hertz in Audio Mode at 40 volts. In RF Mode almost the full frequency range of the GB-4000 goes up to 110 volts. With the SR-4 Amplifier it goes up to almost 10 watts or over 200 volts.

Why Power 0utput Is Important In A Frequency Generator

When comparing the various instruments, power output is a very important consideration. This is the reason the GB-4000 uses a carrier frequency so that more power can be output.

The power output of most frequency generators on the market today that do not use an RF carrier frequency is only about 0.20 of a watt. The GB-4000 with the use of an RF carrier is about 2 watts and is over 9 times more powerful than these instruments. With the use of the optional SR-4 amplifier it is over 50 times more powerful.

(Click here to go to the SR-4 Amplifier page)