Comtech EF Data CDM-500 Uživatelský manuál stáhnout pdf (Strana 4)

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

CDM-625 Advanced Satellite Modem

with DoubleTalk

Carrier-in-Carrier

BUC Power Supply

(HW Option)

24VDC, 4.17 Amps max., 90 W @ 50° C

48VDC, 3.125 Amps max., 150W @ 50° C

(180 W @ 30° C)

Supplied through Tx IF center conductor and selectable ON/OFF via

M&C control.

DEMODULATOR

Input Power Range, Desired

Carrier

50-180 MHz: -105 + 10 log (symbol rate) to -70 + 10 log

(symbol rate) dBm

950-2000 MHz: -130 + 10 log (symbol rate) to -80 + 10 log

(symbol rate) dBm

Max Composite Operating

Level

50-180 MHz:

94 – 10 log (symbol rate, desired carrier) dBc, +10 dBm max,

with the additional requirement that within

± 10 MHz of the desired carrier the composite power is ≤ +30

dBc

950-2000 MHz

102 – 10 log (symbol rate, desired carrier) dBc, +10 dBm

max, with the additional requirement that within

± 10 MHz of the desired carrier the composite power is ≤ +30

dBc

Absolute Maximum +20 dBm

Adaptive Equalizer 5-tap design, selectable ON/OFF

Acquisition Range Programmable in 1kHz increments

Below 32 ksymbols/sec: ± 1 kHz to ± (Rs) kHz, where Rs =

symbol rate in ksymbols/sec

Between 32 and 389 ksymbols/sec: ± 1 kHz to ± 32 kHz

Above 389 ksymbols/sec: ± 1 kHz to ± (0.1 * Rs) kHz, up to a

maximum of ± 200 kHz

Acquisition Time Highly dependent on data rate, FEC rate, and demodulator

acquisition range. E.g.: 120 ms average at 64 kbps, R1/2 QPSK,

± 10 kHz acquisition sweep range, 6 dB Eb/No

Plesiochronous/

Doppler Buffer

Selectable from 64 to 262,144 bits, in 16-bit steps

(Additional limitations for G.704 frame boundaries)

Receive Clock Rx Satellite, Tx Terrestrial, External Reference

Clock Tracking ± 100 ppm minimum

LNB Reference (10 MHz) Via RX IF center conductor, 10.0 MHz ± 0.06 ppm (With internal

reference), selectable ON/OFF,

-3.0 dBm ± 3 dB

LNB Voltage Selectable ON/OFF, 13 VDC, 18 VDC per DiSEq 4.2 and 24

VDC at 500 mA maximum

Monitor Functions E

estimate, Corrected BER, Frequency offset, Buffer fill

state, Receive signal level

DOUBLETALK CARRIER-IN-CARRIER

Delay Range 0 to 330 ms

Power Spectral Density Ratio –7 dB to +11 dB (Interferer to Desired)

Eb/No Degradation

0 dB Power Spectral Density Ratio

BPSK/QPSK/OQPSK: 0.3 dB

8-QAM: 0.4 dB

8-PSK: 0.5 dB

16-QAM: 0.6 dB

+10 dB Power Spectral Density Ratio

Additional 0.3 dB

Satellite Restrictions

Satellite in “loop-back” mode (i.e., the Transmit Station can

receive itself)

“Non-processing” satellite (i.e., does not demodulate or

remodulate the signal)

ENVIRONMENTAL AND PHYSICAL

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

Storage: -25 to 85ºC (-13 to 185ºF)

Power Supply 100 – 240 VAC, +6%/-10%, 50/60 Hz, Auto sensing

-48 VDC (HW Option)

Power Consumption 48 watts (typical with TPC/LDPC Codec and Carrier-in-Carrier

module installed), 55 watts (max.)

280 watts (typical with TPC/LDPC Codec, Carrier-in-Carrier

module and 48 VDC BUC power supply installed), 300 watts

(max.)

Physical Dimensions

(1RU)

1.75H x 19.0W x 17.65D inches

(4.4H x 48W x 44.8D cm) approximate

Weight 10.5 lbs (4.8 kgs) maximum, with all option modules and 48 VDC

BUC power supply installed

CE Mark EN 55022 Class B (Emissions)

EN 50082-1 (Immunity)

EN 60950 (Safety)

EN 61000-3-2

EN 61000-3-3

EN 61000-4-2

EN 61000-4-4

EN 61000-4-5

EN 61000-4-6

EN 61000-4-8

EN 61000-4-9

EN 61000-4-11

EN 61000-4-13

FCC Part 15 Class B

AVAILABLE OPTIONS

Hardware -48 VDC, 65 W Primary Power Supply

Hardware 24 VDC, 90 W @ 50° C BUC Power Supply, AC or DC Primary Power

Supply

Hardware 48 VDC, 150 W @ 50° C (180 W @ 30° C) BUC Power Supply, AC or

DC Primary Power Supply

Hardware Integrated TPC (2

Generation) and LDPC Codec Module

Hardware DoubleTalk Carrier-in-Carrier Module

Hardware VersaFEC Codec Module

FAST L-Band IF (in addition to 70/140 MHz)

FAST Modem Data Rate – 10 Mbps, 15 Mbps, 20 Mbps or 25 Mbps

FAST 8-PSK and 8-QAM Modulation (8-QAM requires TPC/LDPC Codec)

FAST 16-QAM Modulation

FAST TPC/LDPC Codec Data Rate – 10 Mbps, 15 Mbps, 20 Mbps or 20 Mbps

FAST DoubleTalk Carrier-in-Carrier License (Full) – 512 kbps, 1.1 Mbps, 2.5

Mbps, 5 Mbps, 10 Mbps, 15 Mbps, 20 Mbps or 25 Mbps

FAST DoubleTalk Carrier-in-Carrier License (Fractional) – 2.5 Mbps, 5 Mbps,

10 Mbps, 15 Mbps, 20 Mbps or 25 Mbps

FAST VersaFEC Codec Data Rate (CCM) – 2.5 Mbps, 5 Mbps or 16 Mbps

FAST VersaFEC Codec Symbol Rate (ACM) – 300 ksps, 1.2 Msps or 4.1 Msps

FAST Open Network – IBS with High Rate IBS ESC, IDR and Audio

FAST D&I / D&I++ For Single Port T1/E1

FAST D&I++ For Quad E1 Port 2, 3 and 4

ACCESSORIES

CRS-170A 1:1 Modem Redundancy Switch (L-Band)

CRS-180 1:1 Modem Redundancy Switch (70/140 MHz)

CRS-300 1:10 Modem Redundancy Switch

CRS-280 1:10 IF Redundancy Switch (70/140 MHz)

CRS-280L 1:10 IF Redundancy Switch (L-Band)

1 2 3 4

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