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DDS200 Digital Demodulation System User Manual

A–1

Appendix A: Specifications

This section contains the specifications for the DDS200 Digital Demodulation

System. All specifications are guaranteed unless labeled “typical.” Typical

specifications are provided for your convenience and are not guaranteed.

Specifications labeled with the n symbol are checked in the Performance Test

(PT) procedure in the service manual.

NOTE. Performance requirements are valid provided that the instruments are

operating within environmental parameters and have warmed up for at least one

hour.

Table A–1: Electrical Specifications

Characteristics Requirements Supplemental information

Overvoltage category CAT II

RF Input Connector: front-panel female type BNC

Frequency range 47 to 862 MHz

Level 100 V to 700 mV

Accuracy, typical " 3 dB

Impedance, typical 75 

Return loss

y 12 dB

Channel bandwidth, typical 8 MHz

IF Input

Level, typical 10 to 100 mV

(80 to 100 dBuV)

Impedance, typical 50 

Return loss (33 to 40 MHz)

y 20 dB

IF Output

Level, typical 45 mV (93 dBuV)

Impedance, typical 50 

Frequency, typical 36 MHz

Demodulator

Modulation modes

4, 16, 32, 64, 128,

256 QAM

Pulse response roll-off factors 0.15, 0.20, 0.25,

0.30

Operation at 4, 128, and 256 QAM is not specified.

1 2 3 4 5

Appendix A: Specifications 1

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DDS200 Digital Demodulation System User ManualA–1Appendix A: SpecificationsThis section contains the specifications for the DDS200 Digital Demodulatio

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Appendix A: SpecificationsA–2DDS200 Digital Demodulation System User ManualTable A–1: Electrical Specifications (cont.)Characteristics Supplemental in

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Appendix A: SpecificationsDDS200 Digital Demodulation System User ManualA–3Table A–1: Electrical Specifications (cont.)Characteristics Supplemental in

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Appendix A: SpecificationsA–4DDS200 Digital Demodulation System User ManualTable A–2: Certifications and compliances EC Declaration of Conformity –EMC

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Appendix A: SpecificationsDDS200 Digital Demodulation System User ManualA–5Table A–3: Power Characteristics Characteristic DescriptionLine Voltage (au

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Atec Tektronix-DDS200 Manuel d'utilisateur

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