Keysight N9038A MXE Service Guide 229
RF Downconverter Section
RF Downconverter Section Description
A13 RF Front End Assembly
This assembly contains the following circuits:
— 1st LO Distribution
— Auxiliary outputs for possible future use
— oFrequency doubler for certain mixing modes
—Low Band Path
—3.6 GHz low pass filter
— Switchable preamplifier
—1st mixer
— 1st IF amplifier
— A13A1 1st IF 5122.5 MHz band pass filter
—2nd mixer
— High Band Path
— Input amplifier
—1st mixers
— 322.5 MHz IF amplifier
Control for this assembly comes from the A15 Front End Controller assembly.
The connections to and from the A15 Front End Control assembly are as listed
in Table 6-4 and Table 6-5 and as illustrated in Figure 6-5 and Figure 6-6.
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