LOW-POWER PSK MODEM + VITERBI FEC + NETWORK

KEY FEATURES

Full duplex integrated PSK modem, including modulation, demodulation, convolutional error correction, scrambling, HDLC framing and network interface

Programmable symbol rates 2.4Ksymbols/s up to 14 Msymbols/s

Analog/IF interfaces:

• Dual I/Q baseband inputs, 1Vpp differential
• 70 MHz IF input: -50 to +5 dBm, 50 Ohm
• 140 MHz IF input: -50 to +5 dBm, 50 Ohm
• Outputs: dual I/Q baseband outputs, 2Vpp differential, 0.5V common mode

Convolution error correction, rates 1/2, 2/3, 3/4, 5/6 and 7/8.

Serial HDLC to transmit empty frames over the synchronous link when no payload data is available

V.35 scrambling to randomize the modulated data stream

Data interface:

• 10/100 Ethernet LAN with built-in TCP server (COM-1704) or IP router (COM-1705)
• USB 2.0
• Synchronous serial interfaces: RS-422, LVDS

Small size (3”x3”x0.3”) and low power (2W)

Modulation: BPSK/QPSK/OQPSK with output spectral shaping filter: raised cosine square root filter with 20% rolloff

Demodulator acquisition and tracking threshold: -1 dB Eb/No (2dB Eb/No when coded with rate ½ FEC)

Other options available at the time of order:

• +5VDC unregulated vs +3.3VDC regulated supply
• TCXO vs external frequency reference

ComBlock COMPATIBILITY LIST

40-pin 2mm (J4)	Card-Edge (J9)
COM-3506 [400 MHz - 3GHz] customizable transceiver	COM-1500 Development Platform FPGA + ARM + DDR2 SODIMM socket + USB2+ NAND
COM-3505 Dual-band 2.4/5 GHz 2x2 MIMO transceiver	Most digital interface ComBlocks
COM-3501 UHF [225-400 MHz] narrow-band transceiver