Agilent Technologies HP 8566B Spécifications télécharger pdf (Page 87)

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101

15. Residual Responses Test

Figure 2-27. Residual Responses Measurement

8. Look for any residual responses at or above the display line. If a

residual is suspected, press SWEEP

C-j

again and see if the

response persists. A residual will persist on repeated sweeps, but

a noise peak will not. Any residual responses must be below the

display line.

Largest Residual Level

dBm

9. If a response appears to be marginal, perform the following check

determine whether or not it exceeds the specification:

Press

ISAVE_)

Press MARKER

(-1

and place the marker on the peak of

the response in question.

Press MARKER

(

SIGNAL

TRACK)

then activate SWEEP

ICONT).

Reduce (FREQUENCY SPAN) to 1 MHz. Reduce

(RESJ

until

there is at least a

‘7

margin between the display line and the

average noise level. The amplitude of the response must be

less than the display line setting.

Press

@ to resume the search for residuals.

10. Key in control settings as follows:

START FREQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4

GHz

[&FTEj-)

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

2.5GHz

2-62 Performance Tests

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