Applications

Comtech EF Data’s SLM‑5650 Satellite Modem is designed to comply with the strict requirements of the Defense Satellite Communications System (DSCS) defined in MIL‑STD‑188‑165A, modem types I, II, IV, V and VI. Government agencies and the military most commonly utilize this high-end modem.

The modem is designed to support software defined, advanced modulation and signal processing techniques. The selection of these different modes allows the user to maximize performance in a wide variety of environments or to adapt to changing conditions.

Advanced forward error correction (FEC) capabilities are a Comtech EF Data standard feature. Viterbi, Trellis, Concatenated Reed‑Solomon, and Turbo Product Codes are all supported.

The IF frequency range is easily selected from the front panel or the remote control interfaces.They include 52‑88, 104-176, 950‑2000 MHz.

Features

• MIL‑STD‑188‑165A compliant (Types I, II, IV, V, VI)
• Selectable 70/140 MHz and 950‑2000 MHz IF
• BPSK, QPSK, OQPSK, 8‑PSK, 16‑QAM
• Adaptive Equalizer
• FEC rates 1/1, 1/2, 2/3, 3/4, 5/6, 7/8, and others
• 64 kbps to 155 Mbps (Modulation, code rate and interface dependent)
• Flash upgrade capability
• IESS‑308, ‑309, ‑310, ‑315
• ASYNC/AUPC
• Viterbi and Reed‑Solomon Codec
• Optional: Turbo Product Card - FAST
• Asymmetrical loop timing
• Data Source Bit Synchronization (Clock recovery for input data without an associated transmit clock)
• Optional Plug in Data Interface
• Ethernet interface for remote control using HTTP, Telnet, and SNMP
• EIA‑485 and EIA‑232 interface for remote control
• Full featured, built‑in BER test‑set

Notice: Comtech EF Data reserves the right to change specifications of products described in these documents at any time without notice and without obligation to notify any person of such changes.  Information in these documents may differ from information published in other Comtech EF Data documents.