318 Chapter 8
Frequency-Offset Measurement (Option 008)
Measurement of Mixers
Step 5. Select the external signal source you want to use.
NOTE Switching Time allows you to set the wait time after setting the external signal source’s
frequency and power in ms.
Procedures for setting external signal source frequency
The frequencies set to the external signal source should be a multiplier (M
LO
), divisor
(D
LO
), and offset (O
LO
) for the basic frequency setting as shown in the following formula
(refer to
Figure 8-4 or Figure 8-5):
<LO Frequency> = <Basic Frequency> × M
LO
/ D
LO
+ O
LO
Figure 8-4 Example of external signal source frequency setting (swept IF measurement)
Figure 8-5 Example of external signal source frequency setting (fixed IF measurement)
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