DL-64 56/64 Kbps DSU

56 and 64 Kbps DSU/CSU with V.35 and RS-232-D Interfaces

FEATURES
DESCRIPTION
SPECIFICATIONS

General
Indicators (front panel)
Controls
Telco
Data Port
Physical/Electrical

HOW TO ORDER

FEATURES

56 or 64 Kbps
Both RS-232-D and V.35 interfaces
Synchronous (See our DA-56 for an Asynchronous DSU)
Point-to-point or multipoint
DDS service or line driver mode (line driver not available at 64 Kbps)
Responds to Bell defined current reversal loopback and non-latching loopback
Front panel loopback switch
Exceeds Telco RX attenuation specifications by more than 10 dB

The DCB DL-64 is a 56/64 Kbps synchronous DSU/CSU for use with DDS or equivalent digital services. The DL-64 complies with Bell system encoding, decoding, timing, interface and diagnostic standards. It will operate point- to-point or multipoint. The DL-64 has a master clock mode that allows it to be used in line driver mode over customer owned cable when operated at 56 Kbps.

The DL-64 uses the latest line interface technology, which exceeds digital services attenuation specifications by more than 10 dB. This translates into longer cable distances from the phone company central office to the customer premise, or longer customer owned cable runs for line driver applications.

The DL-64 is easy to install and operate. The few controls on the unit include the loopback push button on the front panel, the switch to select line driver or phone company clock, speed switch, and the switch for Request to Send control for multipoint operation. The minimum number of controls and comprehensive indicators make installation and troubleshooting easy. Diagnostic aids built into the DL-64 include LED indicators and loopback capabilities. The V.35 and the RS-232 interfaces are on separate connectors. Both interfaces are active simultaneously. Just plug a cable into the interface you wish to use.

The DL-64 is an ideal choice for any application requiring 56 or 64 Kbps digital service, including bridging, multiplexing and multidrop lines.

SPECIFICATIONS

General

Rates: 56 or 64 Kbps synchronous
Application: Point-to-point or multipoint
Facility: Dataphone Digitial Service (DDS) or equivalent, Line driver mode for customer owned 4-wire circuit at 56 Kbps

Indicators (front panel)

Power, Transmit Data, Receive Data, Request to Send, Clear to Send, Data Carrier Detect, Test

Controls

Front panel push button for Bidirectional Loopback.
Side door accessible switches for master or slave clock, RTS controlled by terminal or forced on.
Responds to telco current reversal loopback and non-latching pattern loopback.

Telco

Interface: DDS bipolar non return to zero
Connector: 8-wire RJ-48S

Data Port

25-Pin connector
Interface: RS-232-D, V.24
Connector: DB-25 female
Timing: Synchronous
V.35 connector
Interface: V.35
Connector: M-34 female
Timing: Synchronous

Physical/Electrical

Power requirements: 120 VAC, ( 9, 12, 24, -48, 120 VDC and 240 VAC Options Available)
60 Hz, 18 Watts
10 1/4" x 9 3/4" x 2 1/4"
Environmental: -40 C to +70 C, non-condensing humidity
One pound

Rear view of DCB DL-64

APPLICATION

How to Order

DL-64	Sync, 56 or 64 Kbps DSU/CSU	$ 395
RK mtg	Rack Mounting Kit	$ 60



Data Comm for Business Inc. 2949 County Road 1000 E Dewey, Il 61840	Voice: 217-897-6600 Toll Free: 800-4-DCB-NET Toll Free: 800-432-2638	Email: Contact Page Web: www.dcbnet.com Fax: 217-897-8023
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