R&S EM510 - Cooling Fans Operation

Characteristics EM510
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2.4.3 Fans
The two 12-VDC fans for cooling the power supply and the HF receiver module are supplied with a
reduced voltage of approximately 8 VDC to operate the fans below maximum speed. This increases the
life of the fans and additionally reduces acoustic noise.
The rotation speed of the fans is constant and not controlled as a function of the temperature.