HP 8568B, Руководство по испытаниям и регулировке работы, Страница: 29 / 313

Equipment
Procedure
y
100.1
1.01 MHz
20.1 MHz
1.5
Analyzer
Center
y
100 MHz
100 MHz
100 MHz
100 MHz
100 MHz
100 MHz
900 MHz
2. Frequency Span Accuracy Test
Synthesized Sweeper .....................................................................
AdapterTypeN(m) to SMA(f).................................................1250-1250
Cable;SMAconnectors....................................................................
Cable; BNC122cm(48in)............................................................HP
10503A
1. Connect equipment as shown in Figure 2-3.
2. Press on analyzer.
3.
Press
[CENTER
FREQ
UE
NCY
]
100 MHz,
[
FREQUENCY
Hz.
4. Connect synthesized sweeper tot spectrum analyzer RF input 2.
5. On synthesized sweeper, select external REFERENCE and key in
0
6. Press and key in 99.999 910 MHz.
7. Press MARKER
[
PEAK SEARCH
)
on spectrum analyzer and record
marker reading under FREQ C of 2-3.
8. Set synthesized sweeper frequency to 100.000 090 MHz.
9. Press MARKER
[
PEAK SEARCH
]
and record marker reading under
FREQ D of Table 2-3.
10. Repeat the span measurement procedure of steps 6 through 9 for
each frequency span listed in 2-3.
11. Determine the frequency difference between the two measured
points. Enter this value under the A DUT column in 2-3.
12. The frequency span error is the difference between A DUT and A
SYNTH. (See table 2-3 for values). Calculate the span error and
record it in
2-4.
13. Compare the table 2-4 to the span error value calculated in
step 12.
2-3. Wide Span Error
Synthesized
Freq. A
span
99.999 910 MHz
99.955 000 MHz
99.954955 MHz
99.550 000 MHz
91.000 000 MHz
90.955 000 MHz
225 MHz
Freq. B
cf + span
100.000090 MHz
100.045 000 MHz
100.045 045 MHz
100.450000 MHz
100.450500 MHz
109.000000 MHz
109.045.000 MHz
1575 MHz
A Synth
180 Hz
90.000 Hz
18.000 MHz
18.090 MHz
1350 MHz
I I I
I
I
I I
I
Performance Tests 2-7