Anritsu MG3690A manual Frequency/Phase Modulation Option, Frequency Range Divide Ratio, n

Modulation

Frequency/Phase Modulation (Option 12)

Option 12 adds frequency and phase modulation, driven externally via a rear panel BNC connector, 50Ω. For internal modulation, add LF Generator Option 23. Frequency/Phase Modulation is not available <10 MHz with Option 22.

For most accurate FM, ΦM measurements, Bessel Null methods are used.

Maximum Input: ±1V

Frequency Modulation:

Frequency Generator Multiplication/Division Ratios:

Frequency Range	Divide Ratio, n
<10 MHz (Option 22)	modulation not available
≥10 to ≤15.625 MHz (Option 4)	256
>15.625 to ≤31.25 MHz (Option 4)	128
>31.25 to ≤62.5 MHz (Option 4)	64
>62.5 to ≤125 MHz (Option 4)	32
>125 to ≤250 MHz (Option 4)	16
>250 to ≤500 MHz (Option 4)	8
>500 to ≤1050 MHz (Option 4)	4
>1050 to ≤2200 MHz (Option 4)	2
>10 to ≤2000 MHz (Option 5)	1
>2 to ≤20 GHz	1
>20 to ≤40 GHz	1/2
>40 to ≤65 GHz	1/4

Parameter	Modes	Conditions	Specifications	Conditions	Specifications
		for all Frequencies other	than <2.2 GHz with option 4	for Frequencies <2.2 GHz with option 4
	Locked	Rate= 1 kHz to 8 MHz	±[Lesser of 10 MHz or	Rate= 1 kHz to	±[Lesser of 10 MHz or
			300 * (mod rate)]/n	(Lesser of 8 MHz or 0.03 * Fcarrier)	300 * (mod rate)]/n
	Locked Low-noise	Rate= 50 kHz to 8 MHz	±[Lesser of 10 MHz or	Rate= 50 kHz to	±[Lesser of 10 MHz or
Deviation			3 * (mod rate)]/n	(Lesser of 8 MHz or 0.03 * Fcarrier)	3 * (mod rate)]/n
	Unlocked Narrow	Rate= DC to 8 MHz	±10 MHz/n	Rate= DC to	±(10 MHz)/n
				(Lesser of 8 MHz or 0.03 * Fcarrier)
	Unlocked Wide	Rate= DC to 100 Hz	±100 MHz/n	Rate= DC to 100 Hz	±(100 MHz)/n
	Locked	100 kHz rate	1 kHz to 10 MHz	100 kHz rate	1 kHz to
					(Lesser of 10 MHz or 0.03 * Fcarrier)
Bandwidth (3 dB)	Locked Low-noise	100 kHz rate	30 kHz to 10 MHz	100 kHz rate	30 kHz to
					(Lesser of 8 MHz or 0.03 * Fcarrier)
	Unlocked Narrow	100 kHz rate	DC to 10 MHz	100 kHz rate	DC to
					(Lesser of 10 MHz or 0.03 * Fcarrier)
	Unlocked Wide	DC rate	DC to 100 Hz	DC rate	DC to 100 Hz
Flatness	Locked	Rate= 10 kHz to 1 MHz	±1 dB relative to 100 kHz	Rate= 10 kHz to	±1 dB relative to 100 kHz
				(Lesser of 1 MHz or 0.01 * Fcarrier)
Accuracy	Locked and Low-noise	Rate= 100 kHz, Sinewave	10% (5% typical)	Rate= 100 kHz, Sinewave	10% (5% typical)
	Unlocked Narrow	Int. or 1Vpk Ext.		Int. or 1Vpk Ext.
Incidental AM	Locked and Low-noise	1 MHz Rate, ±1 MHz Dev.	<2% typical	Rate and Dev.= Lesser of 1 MHz	<2% typical
	Unlocked Narrow			or 0.01 * Fcarrier
Harmonic Distortion	Locked	10 MHz Rate, ±1 MHz Dev.	<1%	Rate= 10 kHz, Dev.= ±(1 MHz)/n	<1%
	Locked
External Sensitivity	Locked Low-noise		±(10 kHz/V to 20 MHz/V)/n		±(10 kHz/V to 20 MHz/V)/n
	Unlocked Narrow		±(100 kHz/V to 100 MHz/V)/n		±(100 kHz/V to 100 MHz/V)/n

Unlocked Wide

Phase Modulation:

Parameter	Modes	Conditions	Specifications
		for all Frequencies other	than <2.2 GHz with option 4
	Narrow	Rate= DC to 8 MHz	±[Lesser of 3 rad or
Deviation			(5 MHz)/(mod rate)]/n
	Wide	Rate= DC to 1 MHz	±[Lesser of 400 rad or
			(10 MHz)/(mod rate)]/n

ConditionsSpecifications

for Frequencies <2.2 GHz with option 4

Rate= DC to	±[Lesser of 3 rad or
(Lesser of 8 MHz or 0.03 * Fcarrier)	(5 MHz)/(mod rate)]/n
Rate= DC to	±[Lesser of 400 rad or
(Lesser of 1 MHz or 0.03 * Fcarrier)	(10 MHz)/(mod rate)]/n

	Narrow	100 kHz rate	DC to 10 MHz	100 kHz rate	DC to (Lesser of 10 MHz or
Bandwidth (3 dB)					0.03 * Fcarrier)
	Wide	100 kHz rate	DC to 1 MHz	100 kHz rate	DC to (Lesser of 1 MHz or
					0.03 * Fcarrier)
	Narrow	Rate= DC to 1 MHz	±1 dB relative to 100 kHz rate	Rate= DC to	±1 dB relative to 100 kHz rate
Flatness				(Lesser of 1 MHz or 0.01 * Fcarrier)
	Wide	Rate= DC to 500 kHz	±1 dB relative to 100 kHz rate	Rate= DC to	±1 dB relative to 100 kHz rate
				(Lesser of 500 kHz or 0.01 * Fcarrier)
Accuracy	Narrow & Wide	100 kHz, Int. or 1Vpk Ext., sine	10%	100 kHz, Int. or 1Vpk Ext., sine	10%
External	Narrow		±(0.0025 rad/V to 5 rad/V)/n		±(0.0025 rad/V to 5 rad/V)/n
Sensitivity	Wide		±(0.25 rad/V to 500 rad/V)/n		±(0.25 rad/V to 500 rad/V)/n

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