HP 8568B manual ‘I&t 2. Frequency Span Accuracy Test, Test 2. Frequency Span Accuracy Test

Test 2. Frequency Span Accuracy Test

‘I&t 2. Frequency

Span 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