Description
A slow sensor signal and a megahertz filter sweep ask very different things of a source. The Tektronix AFG31021 function generator covers both ends, with sine output from 1 μHz to 25 MHz on a single channel. Lost in HCM lists it for rental and sale, and the quote follows your configuration.
A wide span from one output
Low-frequency work and fast sweeps normally push you toward two instruments. Here one output handles filters, amplifiers, sensor interfaces and other low-voltage circuits. It sits in the AFG31000 series and samples at up to 250 MS/s with 14-bit resolution. The product photo is a series reference, so it shows two output connectors, while this model has one channel.
Key figures for the Tektronix AFG31021 function generator
| Item | Value |
|---|---|
| Series | AFG31000 |
| Output channels | 1 |
| Continuous sine frequency | 1 μHz to 25 MHz |
| Maximum sample rate | 250 MS/s |
| Vertical resolution | 14 bits |
| Advanced-mode memory | 16 Mpoints per channel |
| Output impedance | 50 Ω |
| Control | 9-inch touchscreen and front-panel controls |
Setting up the output
Feed CH1 into the circuit, then watch the result on an oscilloscope through a rated probe. Choose the waveform, load setting, amplitude and offset first, and enable the output last. Amplitude limits shift with frequency and waveform, so check the manufacturer datasheet for your exact operating point. Read the manuals for grounding, common-mode, termination and signal limits before you wire anything. Keep it away from mains and high-voltage power switching circuits.
Memory and sequencing in the quote
Advanced-mode memory is 16 Mpoints per channel as standard. A 128 Mpoints upgrade exists, but it stays out unless the quote names it. Sequencing needs the same care, because it should appear in the written configuration. Also ask the quote to list accessories and any calibration documents you expect.
Asking Lost in HCM
Rent the Tektronix AFG31021 function generator for a bring-up, a course or a short qualification run. Buy it when a bench needs one permanently. To begin, request a quote from Lost in HCM with your application, accessories and delivery needs. The waveform and function generators category lists related models, the Tektronix website carries official data, and you can contact SMK Vietnam.
AFG31021 short answers
What is the lowest sine frequency?
1 μHz, with 25 MHz as the upper end.
What load does the output assume?
The listing gives 50 Ω output impedance, so match the load setting to your circuit.
Does the photo show this exact model?
It shows an AFG31000 series reference with two output connectors, while this model has one channel.
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