HP 8568B 211 2f2, Note, fl fz

15. Spurious Responses Test

Note If unable to locate intermodulation distortion products, temporarily increase output power level of frequency synthesizer and synthesized sweeper by + 10 dB. Return the output power level of both

signal sources to the previous settings before making distortion measurements.

20. On the spectrum analyzer, key in MARKER [n),

[CENTER FREQUENCY) 31 MHz, MARKER [PEAK SEARCH) to position

a marker at the peak of the 31 MHz third-order intermodulation product. The response should be below the display line (GO dB below the input signals).

TO1 Distortion (1 MHz separation @ 30 MHz) dBm

21.On the spectrum analyzer, key in [CENTER FREQUENCY) 28 MHz, MARKER [PEAK SEARCH] to position a marker at the peak of the 28 MHz third-order intermodulation product. The response should be below the display line (>80 dB below the input signals).

TO1 Distortion (1 MHz separation @ 30 MHz) dBm

	-	0
	- 1	0
z	- 2 0
E	- 3	0
i.i
z	- 4	0
3

Q

2- 5 0

-6 0

-7 0

f2 - fl

S E C O N D

O R D E R

fl fz

-

L

T H I R D

O R D E R

S E C O N D

H A R M O N I C S

F R O M S I G N A L

GENERAToRS\

211 2f2

S E C O N D

O R D E R

Figure 2-27. Intermodulation Distortion Products

22.On the frequency synthesizer, key in [FREQUENCY) 29.99 MHz.

23.On the spectrum analyzer, key in MARKER IOFF),

CCENTER FREQUENCY) 29.99 MHz, DISPLAY LINE [ENTER] -90 dBm,

MARKER (PEAK SEARCH).

Performance Tests 2 - 53