Chapter 2 99
Making Measurements
Example 8: External Millimeter Mixers (Unpreselected)
Figure 2-44 External Mixer Setup (a) without Bias; (b) with Bias
NOTE Good-quality shielded SMA-type cables should be used to connect the
mixer to the spectrum analyzer to ensure that no signal attenuation
occurs. Agilent 5061-5458 SMA-type cables may be used. Do not
over-tighten the cables; the maximum torque should not exceed 112
N-cm (10 in-lb).
Select the Frequency Band
2. Specify unpreselected external mixing by pressing
CONFIG, then EXT
MXR PRE UNPR until UNPR is selected.
3. To select a frequency above 18 GHz:
a. Press
AUX CTRL, EXTERNAL MIXER to set the analyzer to external
mixer mode.
b. Enter the desired frequency directly using the center-frequency
function.
c. Notice in Table that some frequencies overlap and fall into two
bands. To be sure that the desired band is selected, refer to Table
and select the desired frequency band, then use the full band
function to enter this band.