32 Getting Started Guide
Functionality
Configuration Example: M1740A used with the E7770A CIU
The same example setup is illustrated below, in a broader view. The M1740A
up-converts an output from the E7770A
DUT IF OUT/HEAD OUT
port, received
at the M1740A
IF In
port, to the higher frequency range of the DUT. A returned
signal from the DUT is downconverted and delivered (by way of the
IF In/Out
port) to the E7770A
DUT IF IN/HEAD IN
port. (The ultimate source and
destination of the IF signals is the test set which is using the E7770A as a
signal interface -- the E7515B in this case.)
Because the E7515B is not designed specifically for use with the M1740A,
some elements of the combined signal which is required at the M1740A’s
LO/Pwr/Ctrl/IF In
port have to be provided by the E7770A, as an input distinct
from any IF path. The E7770A furnishes the LO, DC power, and control signals
to this port.
Other instruments besides the E7515B might also take the place of the E7515B
in this example.
Figure 4-6 Using the M1740A with the E7515B and E7770A
