General
Digit height	20 mm
Programmable version	GX320-E

The GX320 function generator from Metrix is a multifunctional signal generator designed for the generation of precise electrical signals in the frequency range from 0.001 Hz to 20 MHz. The device is based on DDS technology (Direct Digital Synthesis), which enables high frequency accuracy and stability exceeding that of conventional generators. Precise frequency adjustment is possible to the last digit, ensuring accurate signal definition for demanding measurement and testing applications. The GX320 generates various signal waveforms, including sine, triangle, square, LOGIC, and TTL signals. The LOGIC function allows direct setting of high and low levels, enabling flexible adaptation to digital circuits and logic testing.

Applications

The GX320 is suitable for a wide range of applications in the fields of measurement technology, electronics development, and testing. It is used, for example, to simulate input signals for circuits, to test filters, amplifiers, or digital systems. The integrated modulation functions extend its application range in communication technology and for the analysis of modulation methods.

Functions and Equipment in Detail

The device offers a variety of modulation options, including AM and FM modulation, supporting both internal and external modulation signals. Additionally, BURST and GATE functions are integrated, which are useful for detailed analysis of short signal events. The FSK and PSK functions (Frequency- and Phase-Shift-Keying) enable phase and frequency jumps occurring in digital transmission systems. The SYNCH function supports synchronization of multiple signal generators, which is advantageous for complex testing and measurement tasks.

Technology Explained Simply

The DDS technology works through digital synthesis, where a signal is derived from a digital frequency table. This results in high accuracy and stability of the generated frequencies. The sweep function (SWEEP) enables linear or logarithmic frequency changes over a defined range, with frequency variation possible as a sawtooth or triangle signal. The duration of the frequency change is adjustable, allowing flexible use in frequency analysis and scanning. An external frequency counter measures frequencies in the range of 5 Hz to 100 MHz, supporting device monitoring and calibration.

Compatibility and Accessories

The GX320 can be operated in cascade configuration to simulate complex signals such as three-phase networks or Fourier synthesis. For applications requiring remote control, a programmable version (GX320-E) is available, which can be controlled via an ETHERNET interface and the SCPI protocol. In this version, up to 15 complete configurations can be stored, facilitating the repeatability of measurement tasks.

Mounting and Installation

The device is designed as a benchtop unit and requires no special mounting. Operation is performed via a large-format LCD display (125 x 45 mm) with a five-digit main display and a digit height of 20 mm. The backlight and contrast of the display are adjustable, improving readability under various lighting conditions. Operation is via buttons and rotary controls directly arranged on the device.

Advantages in Operation

The GX320 offers high signal quality and accuracy required for precise measurements. The variety of signal waveforms and modulation functions significantly extends its application range. The integrated sweep function and external frequency counter enhance functionality for frequency analysis. The programmable version enables automated control and configuration reuse, increasing efficiency in laboratory and production environments.