Motorola UDS DDS/MR64 CSU/DSU

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

Motorola / UDS
DDS/MR64 CSU/DSU
TEL6456524700020
TEL6456524700010

UDS DDSMR64 SA  part # TEL-6456524700020 S/A TEL-6456524700010 card

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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

New #   Telenetics DDSMR64 TEL6456524700010 DDSMR64 refurbished used new Nest Card CSU/DSU Old #    UDS Motorola DDSMR64 refurbished used new 6456524700010 DDSMR64 Nest Card CSU/DSU New #   Telenetics DDSMR64 TEL6456524700020 DDSMR64 refurbished used new  Standalone CSU/DSU Old #    UDS Motorola DDSMR64 refurbished used new 6456524700020 DDSMR64 Standalone CSU/DSU

 

Test Features

The DDS/MR64 has a number of diagnostic tests available for troubleshooting problems.

	Remote loopback with test pattern
	Local loopback with test pattern
	End to end test pattern
	Remote terminal loopback
	Local loopback
	Remote loopback

The DDS/MR64 also responds to telephone company generated DDS diagnostic tests. An internally generated 5 11 test pattern can be used in combination with other test features to perform self-test functions.

Six LEDs provide status information:

	TM (Test Mode)
	OS (Out of Service)
	TD (Transmit Data)
	RD (Receive Data)
	CS (Clear to Send)
	NS (No Signal

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