R3765/67G Series Network Analyzer Operation Manual
9.1 Principle
9-1
9
PRINCIPLE
This chapter explains about the basic operation of the R3765/67G series in flow charts.
9.1
Principle
(1)
Signal source block
R3765G series output the total output signal of 300kHz to 3.8GHz from 4.44GHz to 8.2GHz
synthesizer and 4.4GHz fixed- signal generator.
R3767G series output the total output signal of 300kHz to 3.8GHz from 4.44GHz to 8.2GHz
synthesizer and 4.4GHz fixed-signal generator, and the output signal of 3.8GHz to 8.0GHz
from the synthesizer directly.
(2)
Test-set section
For the AG type, TEST PORT is directly connected to the signal source and receiver parts.
For the BG type, TEST PORT1 is equipped with a directional bridge. The output from the
signal source part is input to the directional bridge, and the output from the directional
bridge is output to the receiver part.
TEST PORT 2 is directly connected to the receiver part.
For the CG type, TEST PORT1 and TEST PORT2 each are equipped with a directional
bridge. The output from the signal source part is switched between TEST PORT1 and
TEST PORT2 directional bridges. Each output from the directional bridge is input to the
receiver part.
(3)
Receiver block
The input signal of 300kHz to 3.8GHz (for R3767G series, to 8.0GHz) is converted to
840kHz IF signal with the Sampler and input into the Mixer.
1st IF signal is converted to 40kHz 2nd IF signal with the Mixer and output to A/D
circuit.
A/D processed data is performed high speed arithmetic processing with digital signal
processor (DSP) and displayed in the display section.
1
2
3