The function generator GX305 from Metrix is a multifunctional measuring instrument for the generation and analysis of electrical signals. It is designed for applications in technical training, education, as well as in design, control, maintenance, and manufacturing. The device uses DDS technology (Direct Digital Synthesis), which enables high frequency accuracy and stability, in contrast to conventional signal generators. The frequency range covers values from 0.001 Hz to 5 MHz, with frequency being precisely adjustable to the individual digit.

Applications

The GX305 is suitable for a wide range of applications in the field of electronics and measurement technology. It is used in training and education to teach fundamentals of signal processing, as well as in industrial practice for testing and developing circuits, control systems, and communication systems. The integrated sweep function (SWEEP) allows analysis of system responses across a frequency range, which is useful for troubleshooting and calibration.

Functions and Equipment in Detail

The device generates various signal waveforms: sine, triangle, square, LOGIC, and TTL. The LOGIC function enables direct setting of high and low levels, making it particularly suitable for digital circuits and logic testing. The sweep function offers linear or logarithmic frequency changes, with modulation via sawtooth or triangle signals, and duration can be individually set. This function is useful for examining frequency response behavior and filter characteristics.

Technology Explained Simply

The DDS technology is based on digital signal synthesis, where frequency is determined by digital counting of clock signals. This results in high accuracy and stability, as frequency is not determined by analog components but by digital control. Thus, frequency can be set and maintained very precisely, which is important for accurate measurements and tests. The external frequency counter extends functionality, as it can measure frequencies from 5 Hz to 100 MHz, exceeding the generator’s own frequency range.

Compatibility and Accessories

Various accessories are available for use with the GX305, expanding its application. These include a set of 2 cables with BNC/BNC connectors, and a set of 2 adapters with BNC plug/4mm socket. These components enable flexible connections to various measuring instruments and circuits, especially in laboratory and workshop environments.

Mounting and Installation

The GX305 is designed as a benchtop instrument and requires no special mounting. It is placed directly on a flat surface and operated via the power supply. Operation is performed via an ergonomic front panel with buttons and a large LCD display.

Advantages in Operation

The large-format LCD display (125 x 45 mm) with a five-digit main display and digit height of 20 mm ensures excellent readability. Background illumination and contrast are individually adjustable, improving readability under various lighting conditions. The ergonomic design facilitates operation, especially during extended measurement runs. The combination of signal generation and frequency measurement in a single device reduces the number of required instruments and simplifies workflow.