Keysight Technologies E4417A

3Adjustments
74 Keysight E4416A/E4417A Power Meters Service Guide
Power Reference Oscillator Frequency Adjustment
Description
Variable inductor A2L9 is adjusted to set the power reference oscillator output
frequency to 50.0 ±0.5 MHz. This frequency is a supplemental characteristic.
Equipment
– Frequency Counter: Keysight 53132A.
NOTE
Adjustment of the power reference oscillator frequency may also affect the
output level of the oscillator. Therefore, after the frequency is adjusted to 50.0
±0.5 MHz, check the output level should be checked as described in “Power
Reference Oscillator Level Adjustment” on page 77. The power reference
oscillator frequency is a nominal specification.
Figure 3-1 Adjustment Setup
Power Meter
Frequency Counter
POWER
REF