Agilent Technologies E4438C manual Spectral purity, Subharmonics, Jitter in µUI1, 7

Specifications for Frequency and Power Characteristics

Spectral purity	SSB Phase noise [at 20 kHz offset]1
				Standard		With Option UNJ
		at 500 MHz	(< –124 dBc/Hz)			< –135 dBc/Hz, (< –138 dBc/Hz)
		at 1 GHz	(< –118 dBc/Hz)			< –130 dBc/Hz, (< –134 dBc/Hz)
		at 2 GHz	(< –112 dBc/Hz)			< –124 dBc/Hz, (< –128 dBc/Hz)
		at 3 GHz	(< –106 dBc/Hz)			< –121 dBc/Hz, (< –125 dBc/Hz)
		at 4 GHz	(< –106 dBc/Hz)			< –118 dBc/Hz, (< –122 dBc/Hz)
		at 6 GHz	N/A			< –113 dBc/Hz, (< –117 dBc/Hz)
	Residual FM1 [CW mode, 0.3 to 3 kHz BW, CCITT, rms]
		Option UNJ			< N x 1 Hz (< N x 0.5 Hz)2
		Standard
		Phase noise mode 1			< N x 2 Hz
		Phase noise mode 2			< N x 4 Hz
	Harmonics 1, 3 [output level ≤ +4 dBm, ≤ +7.5 dBm Option UNB, ≤ +4.5 dBm Option 506]
			< –30 dBc above 1 GHz, (< –30 dBc 1 GHz and below)
	Nonharmonics 1, 4 [≤ +7 dBm output level, ≤ +4 dBm Option 506]
					Standard 5			With Option UNJ 6
					> 3 kHz	> 10 kHz		> 3 kHz			> 10kHz
								< 10 kHz
					offset	offset					offset
								offset
	250 kHz to 250 MHz			< –53 dBc (< –68 dBc)		(< –58 dBc)		< –65 dBc			(< –58 dBc)
	250 MHz to 500 MHz			< –59 dBc (< –74 dBc)		(< –81 dBc)		< –80 dBc			< –80 dBc
	500 MHz to 1 GHz			< –53 dBc (< –68 dBc)		(< –75 dBc)		< –80 dBc			< –80 dBc
	1 to 2 GHz			< –47 dBc (< –62 dBc)		(< –69 dBc)		< –74 dBc			< –74 dBc
	2 to 4 GHz			< –41 dBc (< –56 dBc)		(< –63 dBc)		< –68 dBc			< –68 dBc
	4 to 6 GHz			N/A	N/A	N/A		< –62 dBc			< –62 dBc
	Subharmonics
					Standard	With Option UNJ
		≤ 1 GHz			None		None
		>1 GHz			< –40 dBc		None
	Jitter in µUI1, 7, 8
		Carrier	SONET/SDH		rms jitter		Standard		With option UNJ
		frequency	data rates		bandwidth		(µUI rms)			(µUI rms)
		155 MHz	155 MB/s		100 Hz to 1.5 MHz		(359)			(78)
		622 MHz	622 MB/s		1 kHz to 5 MHz		(158)			(46)
		2.488 GHz	2488 MB/s		5 kHz to 15 MHz		(384)			(74)
	Jitter in seconds1, 7, 8
		Carrier	SONET/SDH		rms jitter		Standard		With option UNJ
		frequency	data rates		bandwidth
		155 MHz	155 MB/s		100 Hz to 1.5 MHz		(2.4 ps)				(0.6 ps)
		622 MHz	622 MB/s		1 kHz to 5 MHz		(255 fs)				(74 fs)
		2.488 GHz	2488 MB/s		5 kHz to 15 MHz		(155 fs)				(30 fs)

1.Parentheses denote typical performance.

2.Refer to frequency bands on page 12 for N values.

3.Harmonic performance outside the operating range of the instrument is typical.

4.Spurs outside the operating range of the instrument are not specified.

5.Specifications apply for FM deviations < 100 kHz and are not valid on FM. For non-constant amplitude formats, unspecified spur levels occur up to the second harmonic of the baseband rate.

6.Specifications apply for CW mode only.

7.Calculated from phase noise performance in CW mode only at -2.5 dBm for standard instruments, -0.5 dBm with Option 506, and +2.5 dBm with Option UNB.

8.For other frequencies, data rates, or bandwidths, please contact your sales representative.

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