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CDM-Qx & CDM-QxL
Multi-Channel Satellite Modems with DoubleTalk™ Carrier-in-Carrier® |
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| Key Features |
- DoubleTalk Carrier-in-Carrier bandwidth compression capability (option)
- Four slot chassis, allowing flexible configuration
- 1 modem
- 2 modems in a 1:1 configuration
- Up to 4 modulators
- Up to 4 demodulators
- CDM-Qx: 50 to 90, 100 to 180 MHz CDM-QxL: 950 to 1950 MHz
- Data Rate: 32 kbps to 20 Mbps
- BPSK, QPSK, 8-PSK and 16-QAM operation
- Forward Error Correction (FEC)
- Viterbi 1/2, 3/4, and 7/8
- Concatenated Reed Solomon 1/2, 2/3, 3/4, and 7/8
- Turbo Product Coding, IESS-315 Compliant (option)
- Data Interface: EIA-422, V.35, Sync EIA-232, G.703 (E1/T1), and HSSI
- M&C Interface: EIA-232, EIA-485, 10/100BaseT Ethernet
- SNMP, http and telnet for M&C
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- Internal Redundancy (option)
1:1 modem
1:1, 1:2 or 1:3 modulator
1:1, 1:2 or 1:3 demodulator
- Embedded Distant-end Monitor and Control (EDMAC)
- Automatic Uplink Power Control (AUPC)
- Enhanced D&I++ (option)
- Spectrum Analyzer Function
- Asymmetric Loop Timing
- Common frequency reference for all modules
- High Stability Reference for CDM-Qx (option)
- Redundant Primary Power Supply (option)
- Individual modulator output power control
- Interoperable with many Comtech EF Data satellite modems: CDM-550T, 570, 570L, 600, 600L, SDM-8000, 300A, and 300L3
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The CDM-Qx and CDM-QxL are the first multi-channel satellite modems, with modular architecture that fit in a 1 RU chassis. Designed with the needs of satellite operators, service providers and enterprise users in mind, they offer exceptional flexibility, redundancy, integration, and performance. The unique 4-slot chassis architecture allows a cost-effective deployment of multiple modulators, demodulators or modems.
CDM-Qx and CDM-QxL are also the first satellite modems to offer DoubleTalk™ Carrier-in-Carrier® bandwidth compression capability that allows the transmit and receive carriers of a full-duplex satellite link to be transmitted in the same transponder space, thereby providing a significant savings in leased bandwidth. |
