HP 8568B kHz, 1Hz, + 10, k-1t, (ref), @?GF), &TTiFV, 0 (ref), 0 (ref), <*l.O dB, sf1.5 dB, Press MARKER, 15.Key in the following analyzer settings:

12. Option 857 Amplitude Fidelity Test

‘Ikble 5-1. Log Amplitude Fidelity (10 Hz RBW; Option 857)

Frequency	1	2			Fidelity Error	Cumulative	Cumulative
Synthesizer	Calibrated	MARKER A Amplitude		(Column 2 - Column 1)		Error	Error
Amplitude	Amplitude		WI		GW	0 to 80 dB	0 to 90 dB
Pm)	Step					WI	WY
+ 10 0	(ref)		0 (ref)		0 (ref)
0	-10
-10	-20
-20	-30
-30	-40
-40	-50
-50	-60
-60	-70
-70	-80
-80	-90					<*l.O dB	sf1.5 dB

12.Subtract the greatest negative fidelity error from the greatest positive fidelity error for calibrated amplitude steps from -10 dB to -70 dB. The results should be 250.8 dB.

dB

13.Subtract the greatest negative fidelity error from the greatest positive fidelity error for calibrated amplitude steps from -10 dB to -90 dB. The results should be sf2.1 dB.

dB

14.Set the frequency synthesizer for output amplitude to + 10 dBm.15.Key in the following analyzer settings:

FREQUENCY SPAN] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 kHz

;&TTiFV. , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 kHz SWEEP @?GF)

16.Press MARKER [PEAK SEARCH], [j),[MKR-IREF LVL] to center the signal on the display.

17.Key in the following analyzer settings:

FREQUENCY	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPAN)	.o	Hz
k-1 t,.....,....................................... 1			1Hz

18.Press MARKER A. Step the frequency synthesizer output amplitude from + 10 dBm to -80 dBm in 10 dB steps, noting the MARKER A amplitude (a negative value) at each step and recording it in column 2 of ‘fable 5-2. Allow several sweeps after each step for the video filtered trace to reach its final ampltitude.

19.Subtract the value in column 1 from the value in column 2 for each setting to find the fidelity error.

5-4 Option 857