The DCB DL-DSU/CSU is a cost effective DSU/CSU for 56, 19.2 and 9.6 Kbps communications with with network management control for  DDS or equivalent services.

DSU/CSU with 56, 19.2, 9.6 Kbps line speed
with network management control

The DCB DL DSU/CSU is a cost effective DSU/CSU for 56, 19.2 and 9.6 Kbps communications with Dataphone Digital Services (DDS) or equivalent services. The DL DSU/CSU complies with Bell system encoding, decoding, timing, interface and diagnostic standards. It will operate either point-to-point or multi-point. The DL DSU/CSU can also be used in line driver mode over customer owned cable.

All setup options and diagnostic testing can be selected with the LCD front panel display and a Network Management Port featured on the DCB DL DSU/CSU. Tests include digital loopback, line loopback, self test and test line. When Test Line is selected, the DL will communicate with the remote DL and check the integrity ofthe line between the DL DSU/CSUs.

The DL DSU/CSU uses the latest in LSI technology to offer better functionality than other discrete component implementations. LSI technology greatly reduces the DL DSU/ CSU power requirements while substantially increasing reliability. Compensation circuitry tunes the DL DSU/CSU to the optimum performance level for your installation insuring better performance even under marginal operating conditions. Line loss capabilities surpass telephone company requirements by 6 dB for reliable data transmission, even when other DSU/CSUs will not work.

SPECIFICATIONS

General

Line Rate: 56, 19.2, 9.6 Kbps
Synchronous Terminal Rate: 56, 38.4, 19.2, 9.6 and 4.8 Kbps
Asynchronous Terminal Rate: 38.4, 19.2, 9.6 and 4.8 Kbps
Application: Point-to-point or multi-point
Facility: Dataphone Digital Service (DDS) or equivalent, line driver mode for customer owned 4-wire circuit

Indicators

Power, Transmit Data, Receive Data, Carrier Detect, and Clear to Send
16 character by 2 line LCD display for configuration and testing

Controls

Front panel push buttons for NEXT, ->, INCR, OK and RESET

Telco

Interface: DDS bi-polar return to zero
Connector: 8-wire RJ-48S

Data Port

Interface: RS-232-D, V.24
Connector: DB-25 female
Timing: Asynchronous or synchronous

Network Management Port

Interface: RS-232-D, V.24
Connector: DE-9 female
Timing: Asynchronous

Front Panel Commands

Rate: 56, 19.2 or 9.6 Kbps
Mode: Telco clocking or line driver
Timing: Synchronous or asynchronous
Terminal Rate: Maximum (sync only), 38.4, 19.2, 9.6 or 4.8 Kbps
RTS Control: Forced on or from interface
Transmit Data Clamp: Normal or clamp on RTS off
Test: Digital Loop, Local Line Loop, Self Test or Test Line

Network Management Port Commands

All of the front panel commands plus:

DSU Type
Set Time/Date
Reset DSU
Show Configuration
Set ID (up to 15 char)
Reset to Defaults

Physical/Electrical

120 VAC, 43 watts, .36 amps
10 1/4" x 9 3/4" x 2 1/4"

Rear view of DCB DSU/CSU

APPLICATION

see other DCB pages