Why price varies and what matters most
When choosing a function generator or signal synthesiser the single biggest factor is not just the sticker price but the combination of frequency range, waveform fidelity, modulation features and local support. For South African makers, students and technicians, that means balancing what you actually need for class labs, bench debugging or embedded testing against lead times and serviceability. Communica stocks a wide range of test equipment categories so you can compare entry-level DDS generators, mid-range arbitrary waveform generators (AWGs) and RF-capable synthesisers in one place.
Typical price tiers and where they fit
Below is a practical summary of typical cost bands and primary use cases so you can match device class to your project budget and requirements.
| Category | Typical price (ZAR) | Best for |
|---|---|---|
| Entry DDS generators | R1,500 - R8,000 | Student labs, basic waveform generation, square/sine/triangle |
| Mid-range AWGs | R12,000 - R60,000 | Custom waveforms, modulation tests, audio and low RF work |
| Signal synthesisers / RF generators | R45,000 - R300,000+ | High-frequency testing, calibrated amplitude/phase, telecom research |
Key specification callouts that change cost
When you compare models, prioritise these specs in order: usable frequency range, sample/update rate (for AWGs), amplitude accuracy and noise floor, modulation types (AM/FM/PM/PSK), and output impedance/level. Durable front-panel controls, waveform memory and PC control drivers also add to price but significantly improve day-to-day productivity.
- Frequency range vs bandwidth - wider ranges increase cost, especially above 30 MHz.
- Sample rate - critical for AWGs to reproduce complex waveforms accurately.
- Amplitude accuracy and low distortion - important when measuring small signals.
Where to check local stock and avoid delays
Availability in South Africa can swing depending on global supply and shipment schedules. Use Communica's stock checks to confirm what is immediately available at the Samrand head office or other branches. If you need fast collection, look for units marked available for branch pickup to reduce lead times and shipping variables.
Search our product index and categories to compare models: All products, browse signal generators and oscilloscopes in Collections, or check brands we commonly stock for test gear at the Shop by Brand page.
