User`s guide

Absolute Measurement Examples 6
Agilent E5505A User’s Guide 175
• The appropriate measurement definition parameters for this example
have been pre-stored in this file. Table 28 on page 200 lists the
parameter data that has been entered for the RF Synthesizer using EFC
measurement example.)
5 Using Figure 121 on page 176 as a guide, navigate to the Sources tab.
a Enter the carrier (center) frequency of your DUT (5 MHz to 1.6 GHz).
Enter the same frequency for the detector input frequency.
b Enter the VCO Tuning Constant (see Ta b l e 2 6 on page 190).
c If you are going to use EFC tuning to tune the 8663A, use the following
equation to calculate the appropriate VCO Tuning Constant to enter for
the measurement.
• VCO Tuning Constant = T x Carrier Frequency
• Where T= 5E-9 for EFC
For example, to calculate the Tuning Constant value to enter for EFC tuning
when the center frequency is 300 MHz:
• (5 E – 9) X (300 E + 6) = (1500 E – 3) = 1.5
d Enter the Tune Range of VCO (Table 26).
e Enter the Center Voltage of VCO (Table 26).
f Enter the Input Resistance of VCO (Table 26)
NOTE
Note that the source parameters in Ta b l e 28 may not be appropriate for the reference
source you are using. To change these values, refer to Ta b l e 2 6 on page 190, then continue
with step step 5. Otherwise, go to “Beginning the measurement" on page 180.