218 Keysight N9038A MXE Service Guide
RF Downconverter Section
RF Downconverter Section Description
RF Downconverter Section Description
RF Section Purpose
The assemblies covered in this section are responsible for filtering and
down-converting the full range of frequencies input to either of the
instrument's front panel inputs to a 322.5 MHz intermediate frequency (IF) for
further processing by the A2 Analog IF & A3 Digital IF assemblies.
There are three different frequency range options that can be ordered with the
N9038A EMI Receiver.
— Option 503, 3.6 GHz Maximum Frequency
— Option 508, 8.4 GHz Maximum Frequency
— Option 526, 26.5 GHz Maximum Frequency
— Option 544, 44.0 GHz Maximum Frequency
There are multiple signal paths through the front end of the instrument. The
number of different signal paths that an instrument uses will depend on the
frequency range of the instrument. In addition to signal paths there are also
different 1st LO mixing modes used within certain signal paths, resulting in
multiple bands for each frequency range option. These bands are defined in
Table 6-1 below.
Table 6-1 RF Downconverter Band Frequency Ranges
Band Frequency Range Option
503 508 526 544
0 20 Hz to 3.6 GHz 20 Hz to 3.6 GHz 20 Hz to 3.6 GHz 20 Hz to 3.6 GHz
1 n/a 3.5 GHz to 8.4 GHz 3.5 GHz to 8.4 GHz 3.5 GHz to 8.4 GHz
2 n/a n/a 8.3 GHz to 13.6 GHz 8.3 GHz to 13.6 GHz
3 n/a n/a 13.5 GHz to 17.1 GHz 13.5 GHz to 17.1 GHz
4 n/a n/a 17.0 GHz to 26.5 GHz 17.0 GHz to 26.5 GHz
5 n/a n/a n/a 26.4 GHz to 34.5 GHz
6 n/a n/a n/a 34.4 GHz to 44.0 GHz
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