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SHORT HAUL MODEM (SHM-FSK)
1. Specifications
Data Format — RS-232C (RS-422/485 optional)
Operation — Full-duplex or half-duplex controlled carrier,
serial asynchronous data
Mode — Point-to-point or multipoint
Data Transmission Speed — Up to 9600 baud
Modulation — Frequency shift key; carrier signal inductively
and capacitively isolated
Distance — Up to 48,000 feet (9.1 miles or 14.6 km) on single twisted pair
Operating Temperature — 32 to 140 °F (0 to 60 °C)
Enclosure — All-metal enclosure, 16 gauge steel; polyurethane paint
Interface — DTE/DCE jumper selectable; Female DB25 connector for
RS-232C; green two-position pluggable terminal block for carrier; black two-
position pluggable terminal block for power
LED Indicators — Carrier Detect, Receive Data, Transmit Data, Power
Power Requirements — 120 VAC 50/60 Hz at 9.6 watts or 24 VDC at 10 watts
Size — 1.75” H x 7.5” W x 10.5” D (4.45 x 19.1 x 26.7 cm)
Weight — 4.5 lb. (2 kg)