Test 2. Frequency Span Accuracy Test

‘I&t 2. FrequencySpan Accuracy Test

Steps 7, 9, and 11. Wide Span Error

r Spectrumn,Analyzer

 

 

Synthesized

Sweeper

 

 

 

DUT Measured

 

 

Fkequency

Center

Freq. A

 

Freq. B

A Synth

Freq. C

Freq. D

A DUT

Span

1Frequency

Cf-.45

span

cf + .45 span

P-4

 

 

 

(D-C)

200 Hz

100

MHz

99.999

910

MHz

100.000

090

MHz

180

Hz

 

 

 

 

100kHz

100

MHz

99.955

000

MHz

100.045

000

MHz

90.000

Hz

 

 

 

 

100.1kHz 100 MHz 99.954955 MHz 100.045045 MHz 90.090kHz IMHz 100 MHz 99.550OOOMHz 100.450 000 MHz 900.000kHz

1.01 MHz 100 MHz 99.550 550 MHz 100.450 500 MHz 909.000kHz

20 MHz 100 MHz 91.000000 MHz 109.000000 MHz 18.000 MHz

20.1MHz 100 MHz 90.955 000 MHz 109.045.000 MHz 18.090MHz

1.5GHz 900 MHz

225 MHz

1575 MHz 1350MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Step 12. Span Error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1Freq Span

Span Error

 

 

 

Spec.

 

 

 

 

 

 

ADUT- ASyn

 

 

 

Min

 

Max

 

 

 

 

 

from ‘able 2-3

 

 

 

 

 

 

 

 

 

 

200 Hz

 

 

 

 

- 1 0 Hz

 

10 Hz

 

 

 

100 kHz

 

 

 

 

-5000 Hz

 

5000 Hz

 

 

 

 

 

 

 

 

 

 

 

100.1 kHz

 

 

 

 

-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 GHz

 

 

 

-34,500.OOO Hz

34,500O.OOO

Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note The specification in Table 2-4 was derived using the following formula:

For spans > 1 MHz, the spec is: >&[(.02)(A synth freq) + (.005)(span)]

For spans 5 1 MHz, the spec is: >&[(.05)(A synth freq) + (.005)(span)]

Performance Tests 2-71