HP 8568B, Performance Tests And Adjustments Manual, Page: 93 / 313

2. Frequency Span Accuracy
2. Frequency
Span Accuracy Test
r
1
Spectrum
Span
200
Hz
100.1
1.01 MHz
20
MHz
20.1
MHz
1.5
Steps 7, 9, and 11. Wide Span Error
Analyzer Synthesized Sweeper
DUT Measured
Center Freq. A Freq. B A Synth Freq. C
Freq. D A DUT
Frequency span cf + span
100 MHz 99.999 910 MHz 100.000 090 MHz 180 Hz
100 MHz 99.955 000 MHz 100.045 000 MHz 90.000 Hz
100 MHz 99.954955 MHz 100.045045 MHz
100 MHz 99.550 100.450 000 MHz
100 MHz 99.550 550 MHz 100.450 500 MHz
100 MHz 91.000000 MHz 109.000000 MHz 18.000 MHz
100 MHz 90.955 000 MHz 109.045.000 MHz
900 MHz
225
MHz
1575
MHz
Note
1
Step 12. Span Error
Freq Span Span Error
ADUT-
Min
Max
from 2-3
200 Hz - 1 0 Hz 10 Hz
100 -5000 Hz 5000 Hz
100.1
-5,005 Hz 5,005 Hz
1 MHz
-50,000 Hz 50,000 Hz
1.01 MHz
-23,230 Hz 23,230 Hz
20 MHz
-460,000 Hz 460,000 Hz
20.1 MHz
-462,300 Hz 462,300 Hz
1.5 Hz Hz
The specification in Table 2-4 was derived using the following formula:
For spans 1 MHz, the is: synth freq) +
For spans 1 MHz, the is: synth freq) +
Performance Tests 2-71