Getting Started Guide 35
Functionality
Signal Routing
Signal Routing
The diagram below uses color-coding to distinguish between various paths for
Tx and Rx signals through the M1749B.
Figure 4-2 RF signal paths through the M1749B
The colors are interpreted as follows:
—
Red
: variable-frequency LO input to the M1749B, used in generating an LO
input to the upconverter and downconverter.
—
Brown
: fixed 9.6 GHz input to the M1749B, used in generating an LO input
to the upconverter and downconverter.
—
Orange
: generated LO signal to the upconverter and downconverter.
(Because both use the same LO, Tx and Rx frequencies need to match.)
—
Green
: Tx path, transmitting a stimulus signal to the DUT by way of either of
the Tx/Rx ports.
—
Blue
: Rx path, receiving a response signal from the DUT by way of either of
the Tx/Rx ports.