Keysight Technologies M1740A, Руководство по началу работы

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26 Getting Started Guide
Functionality
Simplified Block Diagram
Simplified Block Diagram
The simplified functional block diagram below omits most of the routing,
splitting, filtering, and other signal-conditioning functions in order to show
how signals (in some cases combined signals) to and from measurement
instruments (the right side of the illustration) can be routed to the upconverter
and downconverter, and how the upconverter and downconverter interface
with the DUT-facing ports of the test head (the left side of the illustration).
There are many possible signal routings.
There are various possible ways to provide LO inputs to the upconverter and
downconverter, and various possible ways for the test head to receive from a
test instrument an IF input to the upconverter, or to return to that instrument
an IF output to the downconverter. How the ports at the right of the diagram
are used depends partly on the type of test equipment the test head is being
used with.
The RF ports at the left of the diagram can be configured either as Tx or as Rx,
by connecting each port either to the upconverter (if it’s to be used as a Tx
port) or the downconverter (if it’s to be used as an Rx port).
Figure 4-1 M1740A block diagram (simplified)
The LO input signal to the upconverter stage is supplied at the LO/Pwr/Ctrl/IF
In port; this input can also be applied to the downconverter stage.
Alternatively, a separate LO input can be supplied to the downconverter stage
at the LO/IF Out port. Both ports combine LO signals with IF signals.