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Analog modulation – Atec Anritsu-MG3710A User Manual

Page 16

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16

Data Sheet

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MG3710A

Analog Modulation

Optimize Function

Spurious Mode

Mode to control spurious problem. Controls spurious generated by the modulator.

Distortion Mode

Mode to control distortion problem. Optimizes the setting automatically to avoid distortions.
This mode can be used when the output frequency is 7 MHz or higher .

Amplitude Modulation (AM)

Internal modulation only; Specifications for modulated CW signal

AM Depth Type

Lin: Displays the AM depth type in linear.

Exp: Displays the AM depth type into the log format.

AM Depth

Range: 0 to 100%

Resolution: 0.1%

(Peak Level: ≤+4 dBm, AM Depth Type: Lin, after CAL)

AM Depth Error

<3% of setting + 2% (nom.) (100 kHz ≤ f < 98 MHz, Modulation Rate: 1 kHz, AM Source = Sine, AM Depth m: ≤ 90%)

<2% of setting + 1% (nom.) (98 MHz ≤ f ≤ 2.7 GHz, Modulation Rate: 1 kHz, AM Source = Sine, AM Depth m: ≤ 90%)

Distortion

<2% (nom.) (100 kHz ≤ f < 98 MHz, Modulation Rate: 1 kHz, AM Source = Sine, AM Depth m: 30%)

<2.5% (nom.) (100 kHz ≤ f < 98 MHz, Modulation Rate: 1 kHz, AM Source = Sine, AM Depth m: 90%)

<0.5% (nom.) (98 MHz ≤ f ≤ 2.7 GHz, Modulation Rate: 1 kHz, AM Source = Sine, AM Depth m: 30%)

<0.5% (nom.) (98 MHz ≤ f ≤ 2.7 GHz, Modulation Rate: 1 kHz, AM Source = Sine, AM Depth m: 90%)

Modulation Frequency Response

Applied only to the internal modulation (Int) when MG3710A-050/080 is not installed.

100 kHz ≤ f < 98 MHz, Bandwidth: ±1.5 dB

Modulation Ratio m = 30%

Int: 0.1 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext DC coupling: DC ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext AC coupling: 20 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)

Modulation Ratio m = 90%

Int: 0.1 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext DC coupling: DC ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext AC coupling: 20 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)

98 MHz ≤ f ≤ 2700 MHz, Bandwidth: ±1 dB

Modulation Ratio m = 30%

Int: 0.1 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext DC coupling: DC ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext AC coupling: 20 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)

Modulation Ratio m = 90%

Int: 0.1 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext DC coupling: DC ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext AC coupling: 20 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)

Frequency Modulation (FM)

Internal modulation only; Specifications for modulated CW signal

FM Deviation

Range: 0 Hz to 40 MHz, or [50 MHz – Modulation Rate] (smaller value)

Resolution: 0.1 Hz

(Output Level: ≤+4 dBm, 100 kHz + 2 × (Modulation Rate + 2 × FM Deviation) ≤ f ≤ 2.7 GHz, after CAL)

Deviation Accuracy

<2% of setting + 20 Hz (nom.) (Modulation Rate: 1 kHz, FM Source = Sine, 20 Hz ≤ FM Deviation ≤ 40 kHz)

Distortion

< 0.5% (nom.) (Modulation Rate: 1 kHz, FM Source = Sine, FM Deviation: 22.5 kHz)

< 1% (nom.) (Modulation Rate: 1 kHz, FM Source = Sine, FM Deviation: 3.5 kHz)

Modulation Frequency Response

Applied only to the internal modulation (Int) when MG3710A-050/080 is not installed.

Deviation: 40 kHz, Bandwidth: ±1 dB

Int: 20 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext DC coupling: DC ≤ Modulation Rate ≤ 20 kHz (nom.)

Ext AC coupling: 20 Hz ≤ Modulation Rate ≤ 20 kHz (nom.)