R&S ZVB - Page 137

R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT GUI Reference
Trace Menu
Operating Manual 1145.1084.12 – 30 122
 Mixer Delay is the group delay of the mixer. This measured quantity is selected automatically
when a mixer delay measurement is activated.
 The Delay Derivative is the derivative of the Mixer Delay with respect to the sweep variable. It
shows how much the mixer delay changes at each sweep point as the sweep variable (typically,
the frequency) changes.
 The Mixer Phase is the integral of the Mixer Delay over the sweep variable, multiplied by a factor
of –360 deg. The domain of integration is the interval between the start of the sweep range and
each sweep point. For frequency sweeps, this yields the transmission phase of the mixer relative
to an initial phase at the first sweep point (see definition of the group delay). The initial phase is
set to 0 deg.
 Image Conversion is the mixer's conversion gain S
<IF_port><RF_port>
if the RF source port drives in the
image frequency range RF'. In the trace list, the image conversion is shown as
S<IF_port><RF_port>img, e.g. S21img.
 a Drv Port Image is the wave quantity that the analyzer provides at its RF port in the image
frequency range RF'. In the trace list, the a Drv Port Image is shown as
a<RF_port>img(P<RF_port>s), e.g. a1img(P1s).
 b Rcv Port Image is the wave quantity that the analyzer measures at its IF port if the RF source
port drives in the image frequency range RF'. In the trace list, the b Rcv Port Image is shown as
b<IF_port>img(P<RF_port>s), e.g. b2img(P1s).
Use the Linearity Deviation functions to calculate and display the deviation of the Mixer Phase from
linearity. The linearity deviation does not depend on the arbitrary initial mixer phase.
Remote
control:
CALCulate<Ch>:PARameter:MEASure "<Trace_Name>", "MIXDLY" |
"MIXDERIV" | "MIXPHAS" | "S21I" | "A1D1ISAM" | "B2D1ISAM"| ...
Create new trace and select name and measurement parameter:
CALCulate<Ch>:PARameter:SDEFine "<Trace_Name>", "MIXDLY" | ... |
"S21I" ...
Impedance
The Impedance submenu contains the functions to calculate converted impedances from the measured S-
parameters.
 Z <– S11, Z <– S12, Z <– S21, Z<– S22 select the converted impedances of a 2-port DUT.
 More Impedances... opens a dialog to select converted impedances for more ports or mixed mode