5a-15
Theory of Operation
A11 Attenuator (8648B/C/D)
A11 Attenuator (8648B/C/D)
The attenuator is a 4-section attenuator (10, 20, 30, and 60 dB sections) that provides
130 dB attenuation in 10 dB steps.
Calibration EEROM on the motherboard contains calibration data specific to this
assembly. It needs to be updated whenever the attenuator is replaced.
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