User`s guide
2-15
Making Mixer Measurements (Option 089 Only)
Conversion Loss Using the Frequency Offset Mode
NOTE The Agilent E4418B and Agilent E4419B power meters have a “437
emulation” mode. This allows these power meters, with an Agilent
848X-series power sensor, to be used with the network analyzer. In this step,
when selecting a power meter, choose the 438A/437 selection.
4. Press and
enter the correction factors as listed on the power sensor. Press
(where fff is the frequency of the calibration factor in MHz)
(where nnn is the calibration factor number) for each correction
factor. When finished, press .
5. To perform a one sweep power meter calibration over the IF frequency range at 0 dBm
(−10 dBm for 8722ES), press:
(or on 8722ES: )
NOTE Because power meter calibration requires a longer sweep time, you may want
to reduce the number of points before pressing . After
the power meter calibration is finished, return the number of points to its
original value and the analyzer will automatically interpolate this
calibration.
6. To calibrate the R channel over the IF range, connect the equipment as shown in Step 2
of Figure 2-11 and press:
❏ The low pass filter is required to limit the range of frequencies passed into the R
channel input port. The filter is selected to pass the IF frequencies for the
measurement but prevent the LO feedthrough and unwanted mixer products from
confusing the phase-lock loop operation.
❏ A pad is used to isolate the filter and improve the IF port match for the mixer.
Once completed, the display should read 0 dBm (−10 dBm, 8722ES).
Setting the Analyzer to the RF Frequency Range
1. While the analyzer is still set to the IF frequency range, set the frequency offset mode
LO frequency from the analyzer by pressing:
Cal
PWRMTR CAL
LOSS/SENSR LISTS
CAL FACTOR
SENSOR A
ADD
FREQUENCY
fff
M/µ
CAL FACTOR
nnn
x1
DONE
DONE
Cal
PWRMTR CAL
ONE SWEEP
0 x1 −10 x1
TAKE CAL SWEEP
TAKE CAL SWEEP
Cal
CALIBRATE MENU
RECEIVER CAL
0 x1
TAKE RCVR CAL SWEEP
System
INSTRUMENT MODE
FREQ OFFS MENU
LO FREQUENCY
1000 M/µ