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Comtech EF Data CDM760 Satellite Modem

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  • Up to 1.2M Packets Per Second
  • Support for super jumbo frames
  • Up to 314 MPBS Data Rate
  • Multistream Capable
  • DVB-S2-EB-1 Forward Error Correction


SKU: SATRES-391429

Specifications
Symbol Rate Range DVB-S2: 100 Ksps to 150 Msps in 1 sps steps (modulation dependent)

DVB-S2-EB1: 100 Ksps to 150 Msps in 1 sps steps (modulation dependent)
Modulation Type DVB-S2: ETSI EN 302 307 compliant

DVB-S2-EB1: DVB-S2 with Efficiency Boost technology
FEC Frame Normal (64,800 bits) or Short (16,200 bits)
Pilots On or off
Alpha (Rolloff) DVB Compliant: 20%, 25% or 35%

Comtech Efficiency Boost DVB-S2-EB1: 5%, 10%, 15%, 20%, 25%, 35%
Management Front panel keypad / display RS-232 /485, or 10/100Base-T with SNMP, Telnet, HTTP
Reflash Ethernet management port
Frequency Stability Internal, stability ± 0.06 ppm
External Reference Input / Output (BNC Female) Internal, 1, 2, 5 or 10 MHz for IF and data, internally phase locked.

Output: off or internal 10 MHz
Form C Modulator, demodulator and unit fault
Spectral Sense Normal and inverted
Configuration Retention Non-volatile memory; Returns upon power up
Options
FAST DVB-S2, DVB-S2-EB1 TX / RX: 8PSK, 16APSK, 32APSK
FAST Symbol rate options
FAST & Hardware Carrier-in-Carrier options
FAST & Hardware K4 GZIP lossless compression
FAST ACM point to point client / controller
FAST Optical Gigbit Ethernet enable
Hardware PIIC optional interface cards G.703 E3/T3/STS-1 (34.368, 44.736, 51.84 Mbps) STM-1 Copper SDH (155.52 Mbps) OC-3 SONET single mode or multi-mode 1300 nm (155.52 Mbps)
Hardware Rack slides
Modulator (Dual IF)
70/140 MHz 50 to 180 MHz in 100 Hz steps
Impedance / Connector 75 Ω, BNC female. Return loss ≥ 18 dB
Output Power 0 to -25 dBm, 0.1 dB steps (70/140 MHz)
Power Accuracy ± 0.5 dB of nominal at 25°C; Within ± 0.5 dB from 25°C value at same frequency
L-Band 950 to 2150 MHz in 100 Hz steps
Impedance / Connector 50 Ω, Type N female. Return loss ≥ 15 dB
Output Power 0 to -40 dBm, 0.1 dB steps
Power Accuracy ± 0.5 dB of nominal at 25°C

± 0.5 dB from 25°C value at same frequency
L-Band Monitor Same as L-Band or 900 + 70/140 MHz IF at -27 dBm ± 3 dB
Harmonics and Spurs < 60 dBc/4kHz, modulated carrier; Excludes spectral mask area
External TX Carrier Off TTL low signal
Quadrature Phase Error and Amplitude Imbalance Sideband 35 dB below unmodulated carrier
Demodulator (Dual IF)
70/140 MHz 50 to 180 MHz in 100 Hz steps
Impedance / Connector 75 Ω, BNC female. Return loss 15 dB min.
Input Power Desired carrier: Min. = -118 + 10Log(SR in Msps) dBm.

Max. = -83 + 10Log(SR in Msps) dBm or +10 dBm whichever is less.
Max. Composite Power +20 dBm or = 14 + 10Log (180 / SRMSPS) dBc (whichever is less)
L-Band 950 to 2150 in 100 Hz steps
Impedance / Connector 50 Ω, Type N female. Return loss 10 dB min.
Input Power Desired carrier: Min. = -130 + 10Log(SR in Msps) dBm.

Max. = -80 + 10Log(SR in Msps) dBm or +20 dBm whichever is less.
Maximum Composite +20 dBm or = 43 – 10Log (SRMSPS) dBc (whichever is less)
Doubletalk Carrier-In-Carrier
Symbol Rate Range 1 Msps to 63 Msps in 1sps steps
Delay Range 0 to 400 ms (factory default 230 – 290 ms)
CnC Ratio +7 dB to -7 dB interferer to desired
Es/No degradation (dB) measured at 0.0 dB CnC Ratio QPSK: 0.3 dB

8PSK: 0.3 dB

16APSK: 0.6 dB 32APSK: 1.0 dB
Symbol Rate Ratio Max 3:1 TX/RX or RX/TX
Satellite Configuration Transmit station sees own carrier. Non-processing satellite.
Base Unit Connectors
Alarm Connector (DB-15 Male) Form C: TX, RX and unit faults

External TX carrier off

IQ test point
Unit Management DB-9 male with RS-232 and RS-485 2-wire / 4-wire

RJ-45 Ethernet (maximum Ethernet packet size

1536 bytes including Ethernet header & CRC)
TX & RX IF Connectors BNC female (70/140 MHz)

Type-N female (L-Band)
L-Band Monitor SMA female
Ethernet Data Interfaces 2 x RJ-45 10/100/1000Base-T Ethernet

1 x Optical Gibabit Ethernet (optional)

Note: All Data GigE interfaces support super jumbo frames with a maximum Ethernet frame size of 10,240 bytes including Ethernet header & CRC
Test Functions
Data Test Pattern 2^10-1, 2^15-1, 2^23-1 compatible with BERT on TX data on applicable interfaces
CW Modulation disabled and CW signal is transmitted
SSB Carrier Provides suppressed carrier and suppressed sideband
Loopback Full-duplex only
Environmental and Physical
Temperature

    Operating

    Storage


0 to 50°C (32 to 122°F)

-40 to 70°C (-40 to 158°F)
Humidity 95% maximum, non-condensing
Power Supply Input 100 to 240 AC 50/60 Hz
Power Consumption

    120 VAC at 60 Hz

    230 VAC at 50 Hz


88 W, 93 VA typical

88 W, 133 VA typical
Dimensions (1RU) (height x width x depth) 1.75” x 19” x 18.65” (48 x 47.4 x 4.4 cm)
Weight 15 lbs (6.8 kg)
AC Receptacles Includes restraint for standard IEC-320 inlet
Agency Compliance CE Mark and FCC part 15
Accessories
1:1 Modem Redundancy CRS-170A (L-Band), CRS-180 (70/140 MHz)
1:N Modem Redundancy CRS-500 70/140 MHz or L-Band (Only for use with 10/100/1000Base-T or G.703 T3/E3/STS-1 interfaces)

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