CDM-625-EN Advanced Satellite Modem

Comtech EF Data

CDM-625-EN Advanced Satellite Modem

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  • DoubleTalk Carrier-in-Carrier bandwidth compression
  • Carrier-in-Carrier Automatic Power Control
  • Dual Band Capability: 70/140 MHz and L-Band in same unit, extended L-Band receive
  • Data Rate: 18 kbps to 25 Mbps
  • Symbol Rate: 18 ksps to 12.5 Msps
  • Modulation: BPSK, QPSK/OQPSK, 8PSK/8-QAM, 16-QAM

SKU: CMT113 Tags: , , , ,
  • Description
  • Technical Specifications
  • Support Documents

Overview

The CDM-625-EN Advanced Satellite Modem builds on Comtech EF Data’s legacy of providing the most efficient satellite modems for IP-centric applications that require data encryption. It is the first modem to combine advanced Forward Error Correction (FEC) such as VersaFEC and Low Density Parity Check (LDPC) codes with the revolutionary DoubleTalk Carrier-in-Carrier bandwidth compression, allowing for maximum savings under all conditions.

Details

  • DoubleTalk Carrier-in-Carrier bandwidth compression
  • Carrier-in-Carrier Automatic Power Control
  • Adaptive Coding and Modulation (ACM)
  • Packet Processor with header compression, payload compression, advanced Quality of Service (QoS) and Managed Switch Mode
  • AES Data Encryption for IP traffic (Packet Processor)
  • Dual Band Capability: 70/140 MHz and L-Band in same unit, extended L-Band receive
  • Data Rate: 18 kbps to 25 Mbps
  • Symbol Rate: 18 ksps to 12.5 Msps
  • Modulation: BPSK, QPSK/OQPSK, 8PSK/8-QAM, 16-QAM
  • FEC: Viterbi, Sequential, Concatenated Reed Solomon, TCM, Turbo Product Code (TPC) (IESS-315 Compliant), LDPC Code and VersaFEC (low-latency LDPC)
  • Widest Range of Data Interfaces: 4-port 10/100Base-T Ethernet, EIA-422/530, V.35, G.703 T1, G.703 E1, G.703 T2, G.703 E2, Quad G.703 E1, ASI, LVDS, HSSI
  • 4-port Managed Ethernet Switch with VLAN and QoS
  • Sub Mux to multiplex IP/Ethernet traffic with serial or G.703 traffic
  • Drop & Insert for T1/E1
  • Enhanced D&I++ for Single T1/E1 & Quad E1
  • Management: 10/100Base-T Ethernet with SNMP, Distant End SNMP Proxy, HTTP, Telnet and EIA-232/EIA-485
  • Carrier ID using MetaCarrier® Technology
  • Embedded Distant-end Monitor and Control (EDMAC)
  • Automatic Uplink Power Control (AUPC)
  • Standard high-stability internal reference (± 6 x 10-8)
  • 5-tap Adaptive Equalizer
  • L-Band TX: 10 MHz reference for BUC, FSK communications and optional BUC power supply
  • L-Band: Advanced FSK for LPOD M&C
  • L-Band RX: 10 MHz reference and LNB power supply
  • Redundancy switches available

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 (TX) & 950 – 2150 MHz (RX)
(Option), (Note: extended L-Band receive supported on modems shipped since January 2013)
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) 8PSK/TCM Rate 2/3
Integrated LDPC and TPC (2nd Gen) Codec (Optional Plug-in Module) LDPC Code Rates
Rate 1/2 BPSK/QPSK/OQPSK
Rate 2/3 QPSK/OQPSK/8PSK/8-QAM
Rate 3/4 QPSK/OQPSK/8PSK/8-QAM/16-QAM
TPC Code Rates
Rate 5/16 BPSK
Rate 21/44 BPSK/QPSK/OQPSK
Rate 3/4 QPSK/OQPSK/8PSK/8-QAM/16-QAM
Rate 7/8 QPSK/OQPSK/8PSK/8-QAM/16-QAM
Rate 0.95 QPSK/OQPSK/8PSK/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 Ω/75 Ω (nominal)
Output: 10 MHz, 2.7 V peak-to-peak ± 0.4 V, low impedance output
(View our PDF Datasheet for more information)

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