Wire Modems: Private/ Dedicated Line
MDL500 FSK Wire Modem
The MDL500 incorporates a special filter section in the FSK receiver. This filter eliminates out-of-band electromagnetic interference (EMI). As a result, the MDL500 can utilize most untwisted and unshielded wires with error-free operation.
When the MDL500 FSK modem is configured for multi-point operation, the carrier is controlled by the RTS line of the connected addressable device. The turnaround time (RTS to send delay time) is only 20 milliseconds, permitting high system data throughput. The MDL500 has unique circuitry that stabilizes the received carrier rapidly and eliminates any false triggering by the Masters receiver when any Remotes transmitter is turned on or off.
The MDL500 FSK series is factory pre-configured for simple installation. This series range is up to eight miles, based on 24-gauge wire. Larger wire gauges can increase range.
The MDL500 FSK is ideal for applications where only power lines connect the locations requiring data transfer. It can be used to communicate data over sliding contacts with high reliability, including slip rings and rolling wheels, as well as shoes on conductor bars.
The MDL500 with high voltage interface and power line isolators permits full duplex data transmission over in-use power lines at up to 9600 baud. Line voltage and current can be up to 600 volts and 200 amps. Data-Linc's PLI500 Power Line Isolators block outside noise produced by the power grid from interfering with data reliability.
MDL500 FSK Versions
MDL/MRM (Medium Range Master)
MDL/MRR (Medium Range Remote)
MDL/LRM (Long Range Master)
MDL/LRR (Long Range Remote)
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MDL500 FSK Series Specifications
Two-wire, full duplex or half duplex controlled carrier, asynchronous data
Point-to-point or multi-point option
Data Transmission Speed
Up to 9600 baud
Frequency shift key (FSK); carrier signal transformer and capacitively isolated
DTE/DCE jumper selectable; Female DB-25 connector for RS232C; two position pluggable terminal block for carrier; 2.5 mm x 5.5 mm barrel jack (center positive) for 24 VDC power
Two-conductor wire. Up to 20,000 feet (6.1 km)
21 to 28 VDC or 120 VAC (wall transformer provided)
Temperature Range. 32° to 140° F (0° to +60°C)
3.5 lbs (1.6 kg)
Standard. 16-gauge steel with mounting flanges
Specifications subject to change without notice.
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