8.
To
make a
response error-correction,
press:
4
MEAS
5
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
INPUT PORTS
N
N
NN
NN
NN
NN
N
B/R
4
CAL
5
N
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
CALIBRATE
MENU
N
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
RESPONSE
N
NN
NN
NN
NN
NN
NN
N
THRU
9.
Replace the
\calibration"
mixer
with
the
device
under
test.
If
measuring
group
delay
,set
the
delay
equal
to
the
\calibration"
mixer
delay
(for
example
0
0.6
ns)
by
pressing:
4
SCALE
REF
5
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
ELECTRICAL
DELAY
4
0
0.6
5
4
G/n
5
10.
Scale
the data
for best
vertical resolution.
4
SCALE
REF
5
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
AUTOSCALE
Figure
3-18. Group Delay Measurement Example
The displayed measurement trace shows the device under test delay
, relative to the
\calibration" mixer
. This measurement is also useful when the device under test has built-in
ltering, which requires
>
30 dB range (the maximum of R input). PORT 1 to PORT 2 range is
>
100 dB
.
3-26 Making Mixer Measurements
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