Frequency Plots
| Fan / Pump Speed (PWM) | Peak Frequency |
|---|---|
| Fan 30% | 500 Hz |
| Fan 40% | 500 Hz |
| Fan 50% | 500 Hz |
| Fan 60% | 400 Hz |
| Fan 70% | 500 Hz |
| Fan 80% | 500 Hz |
| Fan 90% | 630 Hz |
| Fan 100% | 630 Hz |
| pump 50% | 200 Hz |
| pump 75% | 800 Hz |
| pump 100% | 3.15 kHz |
30% Fan Speed
- Peak frequency: 500 Hz
40% Fan Speed
- Peak frequency: 500 Hz
50% Fan Speed
- Peak frequency: 500 Hz
60% Fan Speed
- Peak frequency: 400 Hz
70% Fan Speed
- Peak frequency: 500 Hz
80% Fan Speed
- Peak frequency: 500 Hz
90% Fan Speed
- Peak frequency: 630 Hz
100% Fan Speed
- Peak frequency: 630 Hz
50% Pump Speed
- Peak frequency: 200 Hz
75% Pump Speed
- Peak frequency: 800 Hz
100% Pump Speed
- Peak frequency: 3.15 kHz
Signal Recordings
I’ve recorded the signals shown above, but please note that I’ve enabled Automatic Gain Control (AGC) to facilitate their reproduction. The provided recordings are only offered for aural identification purposes.
30% Fan Speed
40% Fan Speed
50% Fan Speed
60% Fan Speed
70% Fan Speed
80% Fan Speed
90% Fan Speed
100% Fan Speed
50% Pump Speed
75% Pump Speed
100% Pump Speed
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