Modem (modulator + demodulator ) with flexible configuration:
Modulation: BPSK, QPSK, OQPSK, p/4 DQPSK, 8-PSK, 16QAM, 16APSK, 32APSK
Variable data rates up to 22 Msymbols/s
Center frequency: +/- 10 MHz
Modulator outputs:
Analog baseband differential (2 * 12-bit complex, 64 Msamples/s)
Digital (2 * 10-bit complex, up to 90 Msamples/s)
Digital (2 * 14-bit complex, up to 50 Msamples/s)
Demodulator intputs:
Analog baseband differential (2 * 10-bit complex, 64 Msamples/s)
Digital (2 * 10-bit complex, up to 105 Msamples/s)
Modulator data I/Os:
Two synchronous serial interface,
USB 1.1/2.0
LAN/TCP-IP (COM-1203 only)
· Extensive test & monitoring
BER measurement
PRBS-11 test sequence generator
Loopback mode
Synchronization sequence (unique word) insertion and detection to facilitate demodulator phase ambiguity removal
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 ComScope-enabled: key internal signals can be captured in real-time and displayed on the host computer |
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Connectorized 3"x 3" module for ease of prototyping. Standard 40 pin 2mm dual row connectors (left, right, bottom). Single 5V supply with reverse voltage and overvoltage protection. Interfaces with 3.3V LVTTL logic
Demodulator Block Diagram
Modulator Block Diagram
| Left digital |
Right digital |
Bottom analog |
| COM-300x RF/IF/Baseband receivers |
COM-2001 Digital-to-analog converter (baseband) |
COM-3501 UHF transceiver |
| COM-1824 Channel Emulator (Doppler, delay, fading, noise) |
COM-4004 70 MHz IF modulator |
COM-3505 2.4/5GHz transceiver |
| COM-1509 Convolutional error correction codec, K=5,7,9 |
COM-1509 Convolutional error correction codec, K=5,7,9 |
COM-40xx RF modulators |
| COM-7002 Turbo code codec |
COM-7002 Turbo code error correction decoder |
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