HP HP 8566B, Adjustment Manual

Page: 66 / 405

10. Frequency Response
48.
49.
50.
51.
52.
,
,
I I
I
P O S P K
S T A R T 6 0 M H z
S T O P 2 . 5 0
R E S 3 V B W 3 M H z
Figure
S W P 6 2 . 3
Frequency Response Measurement (60 MHz to 2.5
On the spectrum analyzer, key in TRACE B TRACE A
MARKER and use the DATA knob to position
a marker on the highest point on the TRACE B waveform.
Record the amplitude and frequency for this maximum point in
2-14. The maximum absolute amplitude should be less than
-8.80
On the spectrum analyzer, use the DATA knob to position
a marker on the lowest point on the TRACE B waveform.
Record the amplitude and frequency for this minimum point in
2-14. The minimum absolute amplitude should be greater
than 11.20
On the spectrum analyzer, press MARKER [al and use the DATA
knob to position a second marker
on the highest point on the
TRACE B waveform. Flatness (total peak-to-peak amplitude
deviation) of the displayed trace should be less than 1.20
On the spectrum analyzer, key in [SHIFT)
PEAK
)
(KS=), TRACE A Set the spectrum
analyzer controls as follows:
START FREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STOP FREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RES BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MHz
VIDEO BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MHz
REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -7
LOG SCALE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 dB/DIV
Consult the power sensor Cal Factor versus Frequency graph or
table and set the power meter CAL FACTOR switch to the 3
calibration setting.
Performance Tests 2-41