30 Getting Started Guide
Quick Start
Millimeter-Wave Accessory Instruments
As illustrated below, the CIU is able to upconvert the RF output of the UXM 5G
to the 6-12 GHz range and apply this signal to the DUT. On the same path, it
also can accept a return signal from the DUT, downconvert it to the range of
the UXM 5G, and return it to an input port on the UXM 5G.
Figure 2-4 Functional block diagram of E7515B and E7770A
For mmWave testing, the RF output of the UXM 5G does not need to be
upconverted by the CIU, so it bypasses the CIU (which in this case is used only
to generate the combined LO, DC Power, and Control inputs which the
M1740A requires). The RF output is upconverted by the M1740A to the
mmWave range, and is supplied to an antenna OTA (wireless) interfacing with
the DUT). The returned mmWave signal is received by the M1740A,
downconverted, and passed back to the UXM 5G RF input.
Figure 2-5 Functional block diagram of E7515B, M1740A, and E7770A
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