Digital downconverter specifications, Fm/ φ m specifications – Atec Anritsu-68369ANV User Manual
Page 18

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