4 summary of specifications, 1 70/140 mhz (cdd-564 only) – Comtech EF Data CDD-562L User Manual

Page 36

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CDD-562L/564 Demodulator with IP Module

Revision 2

Introduction

MN/CDD564L.IOM

1–12

1.4

Summary of Specifications

1.4.1 Demodulator

1.4.1.1 70/140 MHz (CDD-564 only)

System Specification
Frequency Range

50 to 90 or 100 to 180 MHz, 100 Hz resolution

Symbol Rate Range

16 ksps to 3.0 Msps

Data Rate Range

Each demodulator independently in 1 bps increments

Rate 3/4 QPSK TPC 16 kbps to 4.5 Mbps

Rate 7/8 QPSK TPC 16 kbps to 5.25 Mbps

Rate 0.95 QPSK TPC 16 kbps to 5.666Mbps

Rate 3/4 8-PSK TPC 16 kbps to 6.75 Mbps
Rate 7/8 8-PSK TPC 16 kbps to 8.5 Mbps

Rate 0.95 8-PSK TPC 16 kbps to 7.875 Mbps

Rate 3/4 16-QAM TPC 16 kbps to 9.0 Mbps
Rate 7/8 16-QAM TPC 16 kbps to 9.98 Mbps

Descrambling

Comtech to IESS-315

FEC Turbo Product

Rate 3/4, 0.95 QPSK
Rate 3/4, 0.95 8-PSK
Rate 3/4, 16-QAM
Rate 7/8, QPSK, 8-PSK, 16-QAM

Inputs

(4X) Type ‘BNC’ female

Input Impedance

50 or 75

Ω user selection

Return Loss

17 dB min

Traffic and Management Interface

10/100 BaseT Ethernet RJ-45

Command Line Interface (CLI)

EIA-232, RJ-11

Factory Test Connector

DB-9 male

Frequency Reference

Internal

± 0.06 ppm, 32 to 122°F (0 to 50°C)

External None

Demodulator
Input Power Range

-30 to –60 dBm

Max Composite Level

+35 dBc, up to –5 dBm

Acquisition Range

± 1 to ± 32 kHz (1 kHz steps) < 625 ksps

Monitor Functions

Eb/No Frequency Offset, BER
LNB current and voltage
Rx signal level

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