8. Frequency Response Test

100Hzto 100 kHz 32. Press (INSTR PRESET) on the spectrum analyzer. Activate SIGNAL INPUT 1.

33. Key in the following spectrum analyzer settings:

 

 

START FREQ)

. . . . .. .............................._

........... 1 kHz

 

 

 

 

100 kHz

;&TEq .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34.Connect equipment as shown in Figure 2-15 with function generator to SIGNAL INPUT 1.

35.Set the function generator controls as follows:

LINE . . . . . . . . . . . . . . . . . . .. . . . . . .. . . . . . . . . . . . . . . . . . . . ON

RANGE Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 K

FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -

OFFSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAL (button in)

AMPLITUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 V

AMPLITUDE VERNIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . midrange

SYM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAL

TRIGGER PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FREE RUN

MODULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . all out

MODULATION RANGE Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I

M O D U L A T I O N R A N G E H z V E R N I E R . . . . . . . f u l l y C C W

MODULATION SYM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAL

Percent Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ..fullyCW

36.Adjust function generator FREQUENCY to place signal between the last two graticule lines (right side) on the signal analyzer display.

37.Adjust AMPLITUDE VERNIER on the function generator until the peak of the signal is at the reference graticule line on the spectrum analyzer display.

38.Press LOG CENTER dB/DIv_) 1 dB on the spectrum analyzer. Press DISPLAY LINE [ENTER] and set the Display Line to the level recorded for 100 kHz in step 25.

39.Adjust function generator AMPLITUDE VERNIER to place peak of signal at the Display Line.

40.Adjust FREQUENCY on the function generator to position the signal trace at the right edge of the spectrum analyzer display (last graticule line).

41.Press MODULATION SWP on the function generator and allow the function generator to make at least two complete sweeps. Press TRACE A [MAX HOLD). Allow the function generator to make one complete sweep. After completion of the sweep, press TRACE A m).

2.28 P e r f o r m a n c e T e s t s