Comtech EF Data CDM-Qx Manual de usuario descargar pdf (Pagina 4)

FEC, Modulation & Data Rate Summary

FEC Type Modulation

Code

Rate

Data Rate Range*

Viterbi BPSK 1/2 32 kbps – 5 Mbps

Viterbi QPSK 1/2 32 kbps – 10 Mbps

Viterbi QPSK 3/4 32 kbps – 15 Mbps

Viterbi QPSK 7/8 32 kbps – 17.5 Mbps

Viterbi + RS (201/219) BPSK 1/2 32 kbps – 4.5 Mbps

Viterbi + RS (201/219) QPSK 1/2 32 kbps – 9.1 Mbps

Viterbi + RS (201/219) QPSK 3/4 32 kbps – 13.7 Mbps

Viterbi + RS (201/219) QPSK 7/8 32 kbps – 16 Mbps

Viterbi + RS (201/219) 16-QAM 3/4 352.4 kbps – 20 Mbps

Viterbi + RS (201/219) 16-QAM 7/8 411.1 kbps – 20 Mbps

TCM + RS (201/219) 8PSK

2/3 234.9 kbps – 18.3

Mbps

TCP BPSK 5/16 32 kbps – 3.1 Mbps

TCP BPSK 21/44 32 kbps – 4.7 Mbps

TCP QPSK 21/44 32 kbps – 9.5 Mbps

TCP QPSK 3/4 32 kbps – 15 Mbps

TCP QPSK 7/8 32 kbps – 17.5 Mbps

TCP QPSK 17/18 32 kbps – 18.8 Mbps

TCP 8PSK 3/4 288 kbps – 20 Mbps

TCP 8PSK 7/8 336 kbps – 20 Mbps

TCP 8PSK 17/18 362.7 kbps – 20 Mbps

TCP 16-QAM 3/4 384 kbps – 20 Mbps

TCP 16-QAM 7/8 448 kbps – 20 Mbps

*Unframed operation

Enhanced D&I++ for G.703 E1

Single G.703 E1

Frame Format E1-CCS Only

Time Slots Any combination of 1 to 31 time slots can be

dropped or inserted

Interoperability Interoperable with CDM-600/600L for

combinations of up to 24 time slots (E1-CCS frame

format, Viterbi and TPC FEC only).

Quad G.703 E1

Frame Format E1-CCS Only

Time Slots For each E1, any combination of 1 to 31 time slots

can be dropped or inserted

Framing

Overhead

0.4% (EDMAC/AUPC additional if needed)

Interoperability Quad G.703 E1 Only

Ber Performance

Met with two adjacent carriers 7 dB higher at 1.3 channel spacing

Guaranteed E

, in dB

Consult the CDM-Qx Manual for a comprehensive listing of the

performance of all FEC types, Code Rates, Modulation types, and

Data Rate ranges.

TPC BPSK QPSK

5/6 21/44 21/44 3/4 7/8 17/18

2.4 2.9 3.5 3.8 4.3 6.8

2.8 3.3 3.6 4.4 4.5 7.4

TPC 8PSK 16-QAM

3/4 7/8 17/18 3/4 7/8

6.2 7.0 9.3 7.4 8.1

6.8 7.2 10.3 8.2 8.3

Refer to the Whitepaper for Eb/No Degradation due to DoubleTalk

Carrier-in-Carrier.

A white paper, DoubleTalk



Carrier-in-Carrier



Bandwidth Compression

Providing Significant Improvements in Satellite Transponder Bandwidth, is

available on the Comtech EF Data web site on the White Papers page,

under All Collateral.

Environmental And Physical

Temperature Operating: 0 to 50ºC (32 to 122°F)

Storage: -25 to 85ºC (-13 to 185ºF)

Power Supply 100 to 240 VAC, 50/60 Hz, auto sensing

-48 VDC (option)

Power

Consumption

CDM-Qx: < 90 W typical

(Depending on configuration)

CDM-QxL: < 90 W typical, w/o BUC PS

(Depending on configuration)

Dimensions (1RU)

(height x width x

depth)

CDM-Qx:

1.75” x 19.0”” x 19”

(4.4 x 48 x 48 cm) approximate

Weight < 20 lbs (7.0 kg) approximate

(Depending on configuration)

CE Mark EMC

Safety

FCC Part 15

Available Options- Chassis

How Enabled Option

Hardware

75 or 50



IF connector (CDM-Qx only)

Hardware Redundant primary power supply

Hardware 0.1 ppm reference (CDM-Qx only)

Hardware -48 VDC power supply

Hardware

BUC PS 24 VDC, 80 W @ 50°C, 100 W @ 30°C, AC

or DC input (CDM-QxL only)

Hardware BUC PS 48 VDC, 150 W @ 50°C,180 W @ 30°C, AC

or DC input (CDM-QxL only)

FAST 1:1, 1:2, or 1:3 Internal Redundancy*

FAST DoubleTalk Carrier-in-Carrier to 512 kbps

FAST DoubleTalk Carrier-in-Carrier to 1 Mbps

FAST DoubleTalk Carrier-in-Carrier to 2.5 Mbps

FAST DoubleTalk Carrier-in-Carrier to 5 Mbps

FAST DoubleTalk Carrier-in-Carrier to 10 Mbps

FAST DoubleTalk Carrier-in-Carrier to 20 Mbps

FAST Enhanced D&I++ for one/both modems

* 1:1 Internal Redundancy for Modem

1:1 or 1:2 or 1:3 Internal Redundancy for Modulator/Demodulator

Modulator/Demodulator/Interface

How Enabled Option

Hardware 2

Generation Turbo Product Coding module

Hardware 25-Pin EIA-422, V.35 or Sync EIA-232 interface*

Hardware G.703 E1/T1 balanced interface*

Hardware G.703 E1/T1 unbalanced interface*

Hardware G.703 E2 unbalanced interface*

Hardware HSSI interface*

Hardware Quad G.703 E1 interface**

FAST Data rate to 10 Mbps

FAST Data rate to 20 Mbps

FAST 8PSK

FAST 16-QAM

* A data interface is only needed for the demodulator card when the

modulator and demodulator are used together as a modem. In this

case, all input and output data is routed through the demodulator’s

data interface.

** Unlike other data interfaces, Quad G.703 E1 interface requires 2 full

slots (3 and 4) in the CDM-Qx/QxL chassis.

Accessories

CRS-311-Qx 1:1 Modem Redundancy Switch

CRS-300-Qx 1:10 Modem Redundancy Switch

See all of Comtech EF Data’s Patents and Patents Pending at http://patents.comtechefdata.com

Comtech EF Data reserves the right to change specifications of products described in this document at any time without notice and without obligation to notify any person of such changes. Information in this

document may differ from that published in other Comtech EF Data documents. Refer to the website or contact Customer Service for the latest released product information.

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