The Motorola UDS DDSMR64 combines the functions of a DSU and CSU into a single unit. The UDS DDSMR64 complies with Bell publications 62310 and 41450 and is directly compatible with Bell 500 series DSU and CSU equipment.

part numbers for in production units

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Specifications

Data Rates (DDS network)
2400, 4800, 9600, 19200, 56000 or 64000 bps synchronous (up to clear channel 64); 2400, 4800, 9600, 19200, 38400, or 57600 bps asynchronous

Data Rates (4-wire, private networks)
2400, 4800, 9600, 19200, 56000, or 64000 bps synchronous; 2400, 4800, 9600, 19200, 38400, or 57600 bps asynchronous

Operating Mode
DDS full-duplex, multipoint; DDS full-duplex point-to-point; 4-wire full-duplex; 4-wire half-duplex or simplex Data Format Serial binary, synchronous, asynchronous

Data Encoding
Bipolar, return-to-zero, per Bell System Publication 62310

Timing
DDS; external; internal

Transmission Facility
Unloaded metallic circuits, 19 to 26 gauge

System Impedance
Line receiver input impedance: 135 ohms ±10% Transmit pair output impedance: 135 ohms ±10%

Output Signal
0.7854 ±0.05 volts across 135 ohms at 9.6 kbps 1.4 ±0.1 volts across 135 ohms at all other rates

RTS/CTS Delay

Digital Interface
EIA-232D; CCITT V35

Power Requirements

110 VAC, 47 - 63 Hz

Power Consumption
5 watts nominal

Environmental
0' - 50' C; 95% humidity, noncondensing
 

part numbers for in production units

Test Features