Agilent Technologies E4438C manual Enhanced multitone1, Awgn

Specifications for Signal Personality Characteristics

Enhanced multitone1	Number of tones	2 to 1024
[arbitrary waveform mode]
	Tone spacing	1 kHz to 50 MHz, limited by 80 MHz I/Q bandwidth
[Option 408]
	Tone power (relative)	0 to –50 dB
	Phase distribution	Fixed, random or parabolic
	Suppression level	–50 to –90 dBc, depending on number of tones
		and available calibration time.
		Expected suppression = 80 dBc –10 log [N/8],
		where N is the number of tones
	Calibration interval	8 hours
	Calibration time	10 minutes (8 tones, –80 dBc suppression)
	Temperature stability	1 dB/°C (typical for IMD products) 5 dB/°C
		(worst case for LO feedthrough and unbalanced
		images)

Enhanced multitone signal with correction applied

AWGN

[real-time mode] [Option 403]

Crest factor [output power set at least 16 dB below maximum power] > 16 dB

Randomness	89 bit pseudo-random generation, repetition period
	3 x 109 years
Carrier to noise ratio	Magnitude error ≤ 0.2 dB at baseband I/Q outputs.

1. All values typical.

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