Keysight N5227B Service Guide 5-21
Theory of Operation
Synthesized Source Group Operation
— LFE output of the Synthesizer #1 board J102 connected to LFE board J20.
— LFE output of the LO board J102 connected to LFE board J18.
— The main connector of the Motherboard bus to LFE board connector J1.
Outputs:
— LF output J2, 900 Hz - 100 MHz, Port 1, to be connected to the bias
combiner Port 1.
— LF output J3, Port 2, to be connected to the bias combiner Port 2.
— 4 IF outputs J11, J12, J13, J14, to be connected to the LFE inputs of the
A24 IF MUX board: A, B, R1, R2.
PNA 4 ports:
The inputs are:
— LFE output of the LO board J102 connected to LFE board J18.
— LFE output of the Synthesizer #1 board J102 connected to LFE board J20.
— LFE output of the Synthesizer #2 board J102 connected to LFE board J21.
— The main connector of the Motherboard bus to LFE board connector J1.
The outputs are:
— LF output J2, 900 Hz - 100 MHz, Port 1, to be connected to the bias
combiner Port 1.
— LF output J3, Port 2, to be connected to the bias combiner Port 2.
— LF output J4, Port 3, to be connected to the bias combiner Port 3.
— LF output J5, Port 4, to be connected to the bias combiner Port 4.
— 5 IF outputs J7, J11, J12, J13, J14, to be connected to the A24 IF MUX
board: A, B, C, D and R.
