Every few months someone asks whether the system can run faster. The honest answer is no: our collectors sample at 20 Hz. What matters is whether that is a limitation for your measurement.
What 20 Hz can and cannot see
20 Hz gives you one full field every 50 ms. A blade section under a quasi-static load step, a bonding process, a press cycle or a thermal cycle is slow compared with that — the pressure field changes over seconds or minutes, and 20 Hz resolves it comfortably.
Vibration, flutter, sudden impact and blade-passing transients are a different matter. Those live at tens to hundreds of hertz. At 20 Hz you will see an aliased average, not the waveform. If that is your measurement objective, a pressure film is the wrong instrument — use accelerometers or a high-speed pressure scanner.
Why the trade is deliberate
4,096 points per sheet at 20 Hz is roughly 82,000 values per second per sheet, and a ten-sheet build produces over 800,000 values per second. Pushing the rate up by 10× would multiply that by ten and force a different acquisition architecture — more power, more heat, more cabling, higher cost — for data most static test campaigns do not need.
So the question to ask is not "how fast is it", but "what is the fastest thing I need to resolve". If the answer is slower than 50 ms, 20 Hz is not a compromise.