8.Frequency Response Test

Related Adjustment Slope Compensation Adjustment

Specification SIGNAL INPUT 1

~tl.5 dB, 100 Hz to 1.5 GHz

*I dB, 100 Hz to 500 MHz

SIGNAL INPUT 2

fl dB, 100 kHz to 1.5 GHz

Description Frequency response at both analyzer inputs is tested by slowly sweeping a flat signal source over the frequency range and observing the peak-to-peak variation in trace amplitude. The test is divided into three parts. First, the response is tested from 20 MHz to 1.5 GHz with a power-meter-leveled synthesized sweeper. Next, a frequency synthesizer is used to check the response from 100 kHz to 20 MHz. Finally, SIGNAL INPUT 1 is tested from 100 Hz to 100 kHz with a function generator.

SPECTRUM ANALYZER

SYNTHESIZED SWEEPER

POWER METER

R E C O R D E R

O U T P U T

I G N A L

N P U T

.\ I

ADA,PT,ERS

I

I

I

I

\I

POWER SENSOR

O P T I O N 0 0 1 . A D D 5 0 OHMS/75 O H M P A D A N D A D A P T E R

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Figure 2-11. Frequency Response Test Setup (20 MHz to 1.5 GHz)

2 - 22 Performance Tests