10. Frequency Response Adjustment

10. Frequency Response Adjustment

Assembly Adjusted

Al5 RF Assembly

Related Performance Tests

Displayed Average Noise Level

Frequency Response

Description

A signal of the same known amplitude is applied to the spectrum analyzer at several different frequencies. At each frequency, the DAC controlling the flatness compensation amplifiers

is adjusted to place the peak of the displayed signal at the same place on the screen. The preselector is centered at each frequency before setting the DAC value. The DAC values are stored in EEROM.

R E F

S J 1 2

Figure 2-13. Frequency Response Adjustment Setup

Adjustment Procedures 2-45