Signal Generators & Counters

Signal generators produce precise electrical waveforms for testing, calibrating, and troubleshooting electronic equipment, while frequency counters measure the frequency of an input signal with high accuracy. We stock function generators, RF signal generators, and frequency counters for bench, field, and RF/communications testing.

Types of Signal Generators

Function generators produce standard waveforms — sine, square, triangle, and pulse — across audio and low RF frequencies, commonly used for general electronics testing and education. Arbitrary waveform generators (AWG) allow custom, user-defined waveforms in addition to standard shapes, useful for simulating real-world or complex signals. RF signal generators produce precise sine wave signals at radio frequencies, used for testing receivers, amplifiers, and RF components.

Frequency Counters

Frequency counters measure the frequency, period, or pulse width of an input signal, commonly used to verify oscillator accuracy, calibrate RF equipment, or troubleshoot timing-related issues. Counter accuracy and frequency range should be matched to the signal source being measured, with higher-end models offering GHz-range measurement for RF and microwave work.

Key Specifications

Frequency range, output amplitude, and waveform accuracy vary significantly between function generators (typically MHz range) and RF signal generators (extending into GHz range). Consider channel count, modulation capability (AM, FM, PM), and output impedance matching when selecting a generator for your application.

Common Applications

• Electronic circuit design and testing
• RF and communications equipment testing
• Sensor and transducer simulation
• Oscillator and timing circuit verification
• Educational and training lab use

Not sure which signal generator or counter fits your application? Contact our team — we can help match frequency range, waveform type, and features to your specific requirement.

Frequently Asked Questions

What’s the difference between a function generator and an arbitrary waveform generator?

Function generators produce standard waveforms like sine, square, and triangle waves. Arbitrary waveform generators can additionally create custom, user-defined waveforms, useful for simulating complex or real-world signal conditions.

Do I need an RF signal generator or a function generator?

RF signal generators are needed for testing at radio frequencies, typically into the MHz-GHz range, while function generators cover audio and lower frequency ranges suited for general electronics testing.

What is a frequency counter used for?

Frequency counters measure the exact frequency of a signal, commonly used to verify oscillator accuracy, calibrate RF equipment, or diagnose timing issues in electronic circuits.

Do you provide calibration certificates for signal generators and counters?

Yes, select models are available with a NIST-traceable calibration certificate at the time of purchase. Look for the certification filter above or contact us for a custom calibration request.