Agilent Technologies HP 8566B Spécifications télécharger pdf (Page 92)

Harmonic

Distortion

10.

11.

12.

16. Harmonic and Intermodulation Distortion Test

Set the synthesized sweeper for an output CW frequency of

230.00 MHz and an output level of approximately -30

dBm.

Press

C2J

on the analyzer. Key in the following settings:

CCENTER

FREQUENCY]

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

230 MHz

(FREQUENCY SPAN]

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

100

kHz

(REFERENCE LEVEL) ....................................... -30

dBm

Connect equipment as shown in Figure 2-28, using the 250 MHz

low-pass filter. Adjust the synthesized sweeper output level to

place peak of signal trace at the top graticule line.

Press DISPLAY LINE

(ENTER]

and key in

110

dBm.

Press MARKER (PEAK SEARCH],

(j-j,

CMKR/A-+ STP SIZE).

Activate (CENTER FREQUENCY] and press

ch)

to tune to the second

harmonic of the input signal.

Reduce (FREQUENCY SPAN) to 10

kHz

and

c-1

to 30 Hz.

Reduce

(RES]

if necessary, for a margin of 15

between the

displayed noise and the display line.

The second harmonic should be below the display line

(c-80

dBc).

Second harmonic level of 230 MHz

dBc

Replace the 250 MHz low-pass filter with the 1200 MHz low-pass

filter.

Set the synthesized sweeper for an output CW frequency of

800.000 MHz.

Press

(21

on the analyzer. Key in:

[CENTER FREQUENCY)

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

800 MHz

[FREQUENCY

SPAN]

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

,100

kHz

[REFERENCE LEVEL)

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

-30

dBm

Adjust synthesized sweeper output level to place peak of signal

trace at the reference level line.

Note

If unable to locate a harmonic distortion product, increase the output

level by 10

dB.

Be sure to return the output level to the original

setting before making a measurement.

13. Press DISPLAY LINE

fjjj

and key in -100

dBm.

14. Press MARKER

CPEAK

SEARCH),

(MKR),

[MKR/A+

STP

SIZE],

[CENTER FREQUENCY)

@EQUENCY

SPAN) 10

kHz.

15. The second harmonic of the input signal should be below the

display line

(c-70

dBc).

Second harmonic level of 800 MHz

dBc

16. Replace the 1200 MHz low-pass filter with the 8

GHz

low-pass

filter.

17. Set the synthesized sweeper for an output frequency of 7200.000

MHz and an output level of 0

dBm.

Performance Tests 2-67

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Agilent Technologies HP 8566B Spécifications Page 92

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