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Digital downconverter specifications, Fm/ φ m specifications – Atec Anritsu-68369ANV User Manual

Page 18

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FM/

φM Specifications:

69B synthesizers with Option 21 DDC produce output
frequencies from 10 MHz to 2.2 GHz by dividing the YTO frequency
by 2

n

. The divisor ranges from 2 at 2.2 GHz to 256 at 10-15.625 MHz.

In FM and

ΦM modes, FM deviation is divided as well, so deviation at

the YTO is greater than at the RF output.

Frequency Modulation (for 691xxB):

Frequency Modulation (for 693xxB):

Phase Modulation:

16

DIGITAL DOWNCONVERTER SPECIFICATIONS

Parameter

Modes

Conditions

Specification

Deviation

Locked

Locked Low-noise

Unlocked Narrow

Unlocked Wide

Rate= 1 kHz to (Lesser of 8 MHz or 0.03* Fcarrier)

Rate= 50 kHz to Lesser of 8 MHz or 0.03* Fcarrier)

Rate= DC to (Lesser of 8 MHz or 0.03* Fcarrier)

Rate= DC to 100 Hz

±[Lesser of 10 MHz or 300*(mod rate)]/n

±[Lesser of 10 MHz or 3*(mod rate)]/n

±(10 MHz)/n

±(100 MHz)/n

Bandwidth (3 dB)

Locked

Locked Low-noise

Unlocked Narrow

Unlocked Wide

100 kHz rate
100 kHz rate
100 kHz rate

DC rate

1 kHz to (Lesser of 10 MHz or 0.03*Fcarrier)

30 kHz to (Lesser of 10 MHz or 0.03*Fcarrier)

DC to (Lesser of 10 MHz or 0.03*Fcarrier)

DC to 100 Hz

Flatness

Locked

Rate= 10 kHz to (Lesser of 1 MHz or 0.01*Fcarrier)

±1 dB relative to 100 kHz

Accuracy

Locked and Low-noise

Unlocked Narrow

Rate= 100 kHz, Sinewave, Int. or 1Vpk Ext.

10% (5% typical)

Incidental AM

Locked, Low-noise,

Unlocked Narrow

Rate and Dev.= Lesser of 1 MHz or 0.01*Fcarrier

<2% typical

Harmonic Distortion

Locked

Rate= 10 kHz, Dev.= ±(1 MHz)/n

<1%

External Sensitivity

Locked

Locked Low-noise

Unlocked Narrow

Unlocked Wide

±(10 kHz/V to 20 MHz/V)/n

±(100 kHz/V to 100 MHz/V)/n

Parameter

Modes

Conditions

Specification

Deviation

Narrow

Wide

Rate= DC to (Lesser of 8 MHz or 0.03* Fcarrier)

Rate= DC to (Lesser of 1 MHz or 0.03* Fcarrier)

±[Lesser of 3 rad or (5 MHz)/(mod rate)]/n

±[Lesser of 400 rad or (10 MHz)/(mod rate)]/n

Bandwidth (3 dB)

Narrow

Wide

100 kHz rate
100 kHz rate

DC to (Lesser of 10 MHz or 0.03*Fcarrier)

DC to (Lesser of 1 MHz or 0.03*Fcarrier)

Flatness

Narrow

Wide

Rate= DC to (Lesser of 1 MHz or 0.01*Fcarrier)

Rate= DC to (Lesser of 500 kHz or 0.01*Fcarrier)

±1 dB relative to 100 kHz rate
±1 dB relative to 100 kHz rate

Accuracy

Narrow and Wide

100 kHz, Int. or 1Vpk Ext., sine

10%

External Sensitivity

Narrow

Wide

±(0.0025 rad/V to 5 rad/V)/

n

±(0.25 rad/V to 500 rad/V)/n

Frequency Range

Divide Radio, n

≥10 to ≤15.625 MHz

256

>15.625 to

≤31.25 MHz

128

>31.25 to

≤62.5 MHz

64

>62.5 to

≤125 MHz

32

>125 to

≤250 MHz

16

>250 to

≤500 MHz

8

>500 to

≤1050 MHz

4

>1050 to

≤2200 MHz

2

Parameter

Modes

Conditions

Specification

Deviation

Locked

Unlocked Narrow

Unlocked Wide

Rate= 1 Hz to (Lesser of 500 kHz or 0.03* Fcarrier)

Rate= DC to (Lesser of 500 kHz or 0.03* Fcarrier)

Rate= DC to 100 Hz

±[Lesser of 10 MHz or 300 (mod rate)]/n

±(10 MHz)/n

±(100 MHz)/n

Bandwidth (3 dB)

Locked

Unlocked Narrow

Unlocked Wide

100 kHz rate
100 kHz rate

DC rate

1 kHz to (Lesser of 500 kHz or 0.03*Fcarrier)

DC to (Lesser of 500 kHz or 0.03*Fcarrier)

DC to 100 Hz

Flatness

Locked

Rate= 10 kHz to (Lesser of 1 MHz or 0.01*Fcarrier)

±1 dB relative to 100 kHz rate

Accuracy

Locked and Unlocked Narrow

Rate= 100 kHz, Sineware, Int. or 1Vpk Ext.

10% (5% typical)

External Sensitivity

Locked and Unlocked Narrow

Unlocked Wide

±(10 kHz/V to 20 MHz/V)/n

±(100 kHz/V to 100 MHz/V)/n