Reliable local stock of function generators and synthesizers
When a test bench, lab session or prototype deadline is looming, waiting weeks for a waveform source is not an option. Communica keeps a practical range of function generators and direct-digital-synthesis (DDS) synthesizers from hobby to bench-grade models in stock across our Samrand head office and branches, reducing lead time and enabling branch collection or fast dispatch. Shop Now to check live availability, or compare key specs below to pick the right unit for your application.
Why buy locally - practical benefits
- Immediate pickup from Samrand or Pretoria/Cape Town branches to keep projects moving and avoid import delays.
- VAT invoices and account quotes for institutional purchases and tertiary education procurement.
- Accessory compatibility and spare cables available from the same supplier to reduce integration friction.
Quick spec comparison - choose by waveform, bandwidth and accuracy
Different projects require different priorities: audio-band testing needs clean sine waves to 100 kHz, RF experiments need stable DDS up to several MHz, and power electronics projects favour burst and gating features plus higher output current. Use the table below to narrow options quickly.
| Class | Typical bandwidth | Key features | Typical use |
|---|---|---|---|
| USB/handheld | 100 Hz-1 MHz | Portable, USB power, basic modulation | Field testing, education |
| Bench DDS | 1 Hz-20 MHz+ | High frequency stability, arbitrary waveforms | RF lab, prototyping |
| Arbitrary waveform (AWG) | DC-100 MHz+ | Deep memory, multi-channel sync | Advanced signal synthesis, modulation research |
Specification callouts to check
- Frequency range and resolution - do you need sub-Hz stepping for modulation tests?
- Amplitude range and output impedance - ensure compatibility with downstream circuits or add a buffer amplifier.
- Modulation types (AM, FM, PM) and sweeping/arbitrary waveform support for modern experiments.
- Triggering and sync outputs for multi-instrument setups.
If you want to browse by category or see the breadth of stock, visit our Collections page. For manufacturer-focused selection, check Shop by Brand to view the brands we commonly stock, which helps when matching probes and software with your choice.
Compatibility guidance and accessory bundles
A waveform generator is only as useful as the cabling, probes and sync paths you pair with it. Consider these practical bundles:
- Probe + SMA cable + BNC adaptor: for connecting bench DDS units to oscilloscopes.
- Buffered output stage: when driving low-impedance loads or long cables.
- USB/GPIB/SCPI adapter kit: for automated bench testing and scripted measurements.
Need live stock for Samrand pickup? Check our head office availability on the Branches & Trading Hours page to plan collection times and fastest dispatch.
