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Datum Systems CDM-QxL Multi-Channel L-Band Satellite Modem

The PSM-500L, or 'M500L' uses Datum Systems' proprietary techniques of direct modulation and demodulation to completely eliminate transmit and receive IF sections and their associated filters.
Features:
  • 8 User stored and recallable configurations. Automatic Recovery of stored configurations.
  • Designed to use internal or external G.703 and Ethernet interfaces.
  • Built-in 1:1 Redundancy.
  • Fully programmable from either front panel or remote command without jumpers.
  • 55 dB AGC range with -5 dBm composite input power.
  • Viterbi FEC codec programmable to rate ?, 2/3, 3/4, 5/6, 7/8 and disabled.
  • DDS setting of transmit and receive data rates from 1.2 kbps to 20 Mbps in 1 bps increments.
  • Built-in BER Test Set.
  • Built-in IBS Multiplexer with overhead channel, AUPC and Remote Modem Control.
  • Low power, light weight 1 U case.
  • Programmable Interface type.
  • DDS transmit and receive frequency setting in 1 Hz increments.
  • Viterbi and Reed-Solomon FEC standard, TPC optional. BER vs. Eb/No performance within 0.3 dB of theoretical. 10-7 BER at 6.0 dB Eb/No (2.8 dB with TPC, 3.5 dB with Reed-Solomon codec).
  • Typical DSP acquisition time of 315 mseconds at 9.6 kbps QPSK, 71 mseconds at 64 kbps QPSK.
  • Programmable receive acquisition/tracking range.
  • LNB power/Reference from modem.
  • Low cost receive by connecting an LNB directly to the L-Band IF input.
  • BUC power/Reference from modem
  • L-Band Transmit allows use with Low Cost Block Up-Converters (BUC).
  • BPSK, QPSK, OQPSK, 8PSK, 16QAM.
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PSM-500L L-Band Satellite Modem

Datum Systems' latest satellite modem implementation represents state of the art enhancements to the popular PSM-4900 series of modems at the industry's lowest price. The PSM-500L, or 'M500L' uses Datum Systems' proprietary techniques of direct modulation and demodulation to completely eliminate transmit and receive IF sections and their associated filters. Sophisticated digital signal processing eliminates all on board physical adjustments and provides performance within 0.3 dB of theoretical. Direct Digital Synthesis (DDS) of the transmit, receive and data rate synthesizers allow settings to 1 Hz and 1 bps respectively. The L-Band M500L is optimized for low cost, high performance VSATs and small stations while the companion M500S, 70 MHz IF version is ideal for hub stations. The M500 series adds 8PSK, 16QAM, Reed-Solomon and a built-in multiplexer to the PSM-4900 series.

The M500L is unmatched by any other modem in its class for fast acquisition, BER performance and power/bandwidth optimization. It uses dedicated DSP for extremely fast acquisition over a programmable range.

The PSM-500L is available in 3 upgradeable versions offering the latest modulation, coding and FEC technology plus data rates to precisely meet your needs. The transmit and receive can independently use BPSK, QPSK, OQPSK, 8PSK and 16QAM modulation at any data rate or configuration settings. Reed-Solomon, IBS multiplexer, AUPC and remote modem control channels are built-in Sophisticated TPC and other FEC options are available.

The full front panel provides a backlit LCD display, full keypad and LED indicators for monitor and control of all modem parameters.