HP 8566B Adjustment Manual page 92

16. Harmonic and Intermodulation Distortion Test
Set the synthesized sweeper for an output CW frequency of
230.00 MHz and an output level of approximately -30 dBm.
2. Press C2J on the analyzer. Key in the following settings:
FREQUENCY
( ]
FREQUENCY SPAN
( )
REFERENCE LEVEL
3. Connect equipment as shown in Figure 2-28, using the 250 MHz
low-pass filter. Adjust the synthesized sweeper output level to
place peak of signal trace at the top graticule line.
Press DISPLAY LINE (ENTER] and key in - 110 dBm.
4.
(
5. Press MARKER
PEAK SEARCH
(
6. Activate
CENTER FREQUENCY
harmonic of the input signal.
(
7. Reduce
FREQUENCY SPAN
Reduce (RES] if necessary, for a margin of 15 dB between the
displayed noise and the display line.
8. The second harmonic should be below the display line (c-80
Second harmonic level of 230 MHz
9. Replace the 250 MHz low-pass filter with the 1200 MHz low-pass
filter.
10. Set the synthesized sweeper for an output CW frequency of
800.000 MHz.
11. Press (21 on the analyzer. Key in:
[
CENTER FREQUENCY
[
FREQUENCY
[ )
REFERENCE LEVEL
Adjust synthesized sweeper output level to place peak of signal
12.
trace at the reference level line.
If unable to locate a harmonic distortion product, increase the output
level by 10 dB. Be sure to return the output level to the original
setting before making a measurement.
13. Press DISPLAY LINE fjjj and key in -100 dBm.
14. Press MARKER
[ ) m, @EQUENCY
CENTER FREQUENCY
15. The second harmonic of the input signal should be below the
display line (c-70 dBc).
Second harmonic level of 800 MHz
16. Replace the 1200 MHz low-pass filter with the 8 GHz low-pass
filter.
17. Set the synthesized sweeper for an output frequency of 7200.000
MHz and an output level of 0 dBm.
] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 dBm
], (j-j, CMKR/A-+
]
and press ch) to tune to the second
)
to 10 kHz and c-1 to 30 Hz.
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 dBm
), (MKR), [MKR/A+
SEARCH
)
10 kHz.
SPAN
230 MHz
).
STP SIZE
800 MHz
STP
Performance Tests 2-67