Agilent Technologies HP 8566B Spécifications télécharger pdf (Page 76)

100

101

12. Noise Sidebands Test

Key in the following on the analyzer under test:

(CENTER

FREQUENCY]

...................................... 5.7

GHZ

[FREQUENCY SPAN)

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

kHz

Wait for completion of the sweep (the asterisk * at the upper right

of the display will disappear), then press MARKER [PEAK SEARCH),

(j-1,

CMKR

REF LVL).

Change [FREQUENCY SPAN) to 700 Hz. Wait for completion of the

sweep, then press MARKER (PEAK SEARCH),

(j-1.

Wait again

for the completion of the sweep.

Press

[SHIFT)

(VIDEoJG

to initiate video averaging. When the

VID AVG readout at the left edge of the display reaches 20, press

m),

TRACE B

(mj.

10.

Press MARKER [PEAK SEARCH], In] and key in 320 Hz.

Record the MARKER A amplitude:

dBc.

See Figure 2-23.

Find the equivalent noise power bandwidth,

BWenp,

for the 10 Hz

resolution bandwidth filter by multiplying the 3

bandwidth

recorded in

Table

2-5 of the Resolution Bandwidth Accuracy Test

by 1.13:

BWen,

1.13 x Hz

Figure 2-23. Noise Sidebands Measurement

Performance Tests 2-51

1 2 ... 71 72 73 74 75 76 77 78 79 80 81 ... 404 405

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