Comtech EF Data LPOD Bedienungsanleitung PDF herunterladen (Seite 4)

Feature Enhancements

Enhancing the capability of the CDM-625 in the field is easy. Features that do not require additional hardware can be added on site,

using FAST access codes purchased from Comtech EF Data.

Specifications

Data Rate 18 kbps to 25 Mbps, in 1 bps steps

(modulation, FEC & data interface dependant)

Symbol Rate 18 ksps to 12.5 Msps

Operating

Frequency

50 – 180 MHz (standard) and

950 – 2000 MHz (Option),

100 Hz resolution, independent TX and RX

operation

Major Operating

Modes

(See User Manual

For Details)

Open network, per IESS-308 / 309 / 310 / 314

transparent, closed network per IESS-315

LDPC / TPC Codec (optional plug-in module)

VersaFEC Codec (optional plug-in module) with

ACM or Constant Coding & Modulation (CCM)

EDMAC Framed with/without AUPC

RS Outer Codec

High rate ESC / Enhanced ESC (ESC++)

Drop & insert (D&I) /Enhanced D&I++

Quad E1 drop & insert (QDI)

DoubleTalk Carrier-in-Carrier (optional plug-in

module)

FEC Options

None Uncoded BPSK/QPSK/OQPSK

Viterbi: k=7, per

IESS-308/309

Rate 1/2 BPSK/QPSK/OQPSK

Rate 3/4 QPSK/OQPSK

Rate 7/8 QPSK/OQPSK

Viterbi with Reed

Solomon

Rate 3/4 16-QAM

Rate 7/8 16-QAM

Sequential See CDM-625 user manual for details

Reed Solomon Open network and closed network modes

TCM (Per IESS-310) 8-PSK/TCM Rate 2/3

Integrated LDPC

and TPC (2

Gen)

Codec (Optional

Plug-in Module)

LDPC Code Rates

Rate 1/2 BPSK/QPSK/OQPSK

Rate 2/3 QPSK/OQPSK/8-PSK/8-QAM

Rate 3/4 QPSK/OQPSK/8-PSK/8-QAM/16-QAM

TPC Code Rates

Rate 5/16 BPSK

Rate 21/44 BPSK/QPSK/OQPSK

Rate 3/4 QPSK/OQPSK/8-PSK/8-QAM/16-QAM

Rate 7/8 QPSK/OQPSK/8-PSK/8-QAM/16-QAM

Rate 0.95 QPSK/OQPSK/8-PSK/8-QAM

VersaFEC Codec

(Optional Plug-in

Module)

BPSK Rate 0.488

QPSK Rate 0.533, 0.631, 0.706, 0.803

8-QAM Rate 0.576 (ECCM), 0.642, 0.711, 0.780

16-QAM Rate 0.644 (ECCM), 0.731, 0.780,

0.829, 0.853

BPSK 0.493 (ULL)

QPSK 0.493, 0.654, 0.734 (ULL)

Scrambling IDR Mode, no RS, - per ITU V.35 (Intelsat variant)

IBS mode, no RS - per IESS-309, externally

frame synchronized

Transparent Closed Network mode, no RS or

Turbo coding - per ITU V.35 (Intelsat variant)

EDMAC mode, no RS coding - externally frame

synchronized - proprietary

Turbo Product Code/LDPC/VersaFEC modes -

externally frame synchronized - proprietary

All RS modes - externally frame synchronized per

IESS-308/309/310

Management 10/100Base-T Ethernet with SNMP, HTTP and

Telnet support, EIA-232, EIA-485 (2- or 4-wire)

Form C Relays Hardware fault, RX and TX traffic alarms, open

network backward alarms

External Reference

(Input OR Output)

BNC connector

Input

: 1, 2, 5, or 10 MHz, -6 dBm to

+10 dBm, 50 /75  (nominal)

Output

: 10 MHz, 2.7 V peak-to-peak

± 0.4 V, low impedance output

Data Interfaces

EIA-422/-530 DCE , Up to 14 Mbps

25-pin D-sub (female)

V.35 DCE , Up to 14 Mbps

LVDS Serial , Up to 25 Mbps

25-pin D-sub (female)

HSSI Serial , Up to 25 Mbps

G.703 T1, 1.544 Mbps

(Balanced 100 )

9-pin D-sub (female)

BNC (female)

G.703 T2, 6.312 Mbps

(Unbalanced 75  or balanced

110 )

G.703 E1, 2.048 Mbps

(Unbalanced 75  or balanced

120 )

G.703 E2, 8.448 Mbps (Unbalanced

75 )

ASI , Up to 25 Mbps BNC (female)

Additional 2.048 Mbps E1 Ports for

Quad-E1 (Balanced 120 )

9-pin D-sub (female)

Overhead Data 44-pin High-density D-sub (male)

Modem Alarms 15-pin D-sub (male)

4-port 10/100Base-T Managed

Ethernet Switch

(Optional IP Packet Processor

Available)

4 x RJ-45

Modulator

Frequency Stability ± 0.06 ppm (± 6 x 10

), 0° to 50°C (32° to

122° F) with internal reference

Transmit Filtering Per IESS-308

Transmit Filter Rolloff 25%, 35%

Harmonics and

Spurious

Better than -60 dBc/4 kHz

(typically <-65 dBc/4kHz)

Measured from 1 to 500 MHz

(50-180 MHz band)

Measured F

± 500 MHz

(950-2000 MHz band)

Transmit On/Off Ratio -60 dBc minimum

Output Phase Noise < 0.480° rms double sided, 100 Hz to 1 MHz

(Minimum 16 dB better overall than the Intelsat

IESS-308/309 requirements)

dB/Hz

Frequency Offset

-63.0 100 Hz

-73.0 1 kHz

-83.0 10 kHz

-93.0 100 kHz

Fundamental AC line spurious is -42 dBc or

lower

The sum of all other single sideband spurious,

from 0 to 0.75 x symbol rate, is -48 dBc or lower

Output Power 50-180 MHz:

0 to -25 dBm, 0.1 dB steps

950-2000 MHz:

0 to -40 dBm, 0.1 dB steps

Power Accuracy 50-180 MHz:

± 0.5 dB over frequency, data rate, modulation

type and temperature range of 15 to 35° C

± 0.8 dB over frequency, data rate, modulation

type and temperature range of 0 to 50° C

950-2000 MHz

± 0.7 dB over frequency, data rate, modulation

type and temperature range of 15 to 35° C

± 1.0 dB over frequency, data rate, modulation

type and temperature range of 0 to 50° C

1 2 3 4 5 6

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