HP 8566B Adjustment Manual page 67

10. Frequency Response Test
2-42 Performance Tests
53. On the synthesized sweeper, key in
3.9 GHz,
SWEEP (-1.
54. On the spectrum analyzer, key in TRACE B
B (j-1, (SHIFT) (GHz) (KS/).
55. On the synthesized sweeper, key in
and wait for a sweep to complete (150 seconds) and the SWEEP
LED to turn off. As the synthesized sweeper tunes from 2.0 GHz
to 3.9 GHz, the spectrum analyzer frequency response is displayed
as TRACE B (TRACE A displays the current input signal).
56. On the synthesized sweeper, press Icw) and use the ENTRY knob
to position the peak of the displayed TRACE A signal at the
lowest point on the TRACE B waveform.
57. On the spectrum analyzer, key in
PEAKING! message to clear from the CRT.
58. Repeat steps 55 through 57 until the level of the lowest point on
the TRACE B waveform does not change.
59. On the spectrum analyzer, key in TRACE B (VIEW), TRACE A
marker on the highest point on the TRACE B waveform. Record
the amplitude and frequency for this maximum point in Column
4 of Table 2-15. The maximum absolute amplitude should be less
than -7.70 dBm.
60. 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 Column 4
of Table 2-15. The minimum absolute amplitude should be greater
than -12.30 dBm.
61. 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 3.40 dB.
62. Set the spectrum analyzer controls as follows:
START FREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.9 GHz
STOP FREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.8 GHz
63. Consult the power sensor Cal Factor versus Frequency graph or
table and set the power meter CAL FACTOR % switch to the 5
64. On the synthesized sweeper, key in
65. On the spectrum analyzer, key in TRACE A
( - ),
B TRACE B l-1, [SHIFT] IGHz) (KS/).
CLEAR WRITE
66. On the synthesized sweeper, key in
and wait for a sweep to complete (150 seconds) and the SWEEP
LED to turn off. As the synthesized sweeper tunes from 3.9 GHz
to 5.8 GHz, the input signal is displayed as a TRACE A response,
and the spectrum analyzer frequency response is displayed as
TRACE B.
3.0 GHz,
[ )
150 s, SWEEP [ml,
SWEEP TIME
[ -
CLEAR WRITE
[
SWEEP [SINGLE]
START
( )
and wait for
PRESEL PEAK
5.0 GHz,
[ -
CLEAR WRITE
[ ),
SWEEP (-1
START FREQ
) 2.0
FREQ
),
TRACE
the
)
3.9
FREQ
),
TRACE