DSD-V35, V.35 SHARING DEVICE

104000

V.35 Digital Sharing Device

DSD-2 and DSD-4

Features / Benefits

Description

* V.35 Data Sharing Device
* Interface - CCITT V.35, MR-34 Female Connectors
 
* Data Rates - Synchronous up to 2.048Mbps
 
* Anti-Streaming - Automatic or Manual for unattended Circuit Restoral
 
* Individual Subchannel Enable / Disable Switches
 
* Visual Indication of Subchannel Activity
 
* Receive Data - Broadcast or Gated
 
* Transparent to Data
 
* Fully Cascadable
 
* External Clocking
 
* Sturdy Metal Enclosure
 
* 110/220VAC Switch Selectable
 
 

The Digital Sharing Device (DSD) products consist of 2 and 4 port units. The DSDs provide the network manager with a cost effective means of expanding existing, leased line polled networks without adding computer ports or communications links.

With the DSD's, up to four terminals or controllers can share the same port and communications link using the contention and control protocols normally resident in the host hardware and software. Once installed, system and network efficiency are increased through higher host processor utilization coupled with the significant decrease in idle time between host / terminal traffic sessions.

Ideal for synchronous network environments, the DSDs are protocol transparent at data rates up to 2.048Mbps. Data arriving at the Master Port is continually broadcast to all Subchannels. The attached terminal device that raises the RTS control signal is automatically given control of the DSD until data transmission is complete. Clocking is accomplished from the attached Modem (CSU\DSU).

The DSDs incorporate optional Anti-Streaming circuitry. If enabled, Anti-Streaming will automatically remove a defective terminal from service if the Data / Control criteria is present for the user predefined clock selection period.

Housed in a sturdy metal enclosure and equipped with an internal 110/220VAC switch selectable linear power supply, the DSDs will provide in excess of100,000 hours of reliable service.

The DSDs have a three year warranty and a 24 hour turnaround on warranty repairs.

  V35 Sharing Device Application Diagram
 

SPECIFICATIONS

Application V35 Digital Sharing Device allows multiple Sync terminals or DTE devices operating in a polled environment, to share one V.35 Digital Modem (CSU/DSU)
Capacity One to four V.35 Sync/Async devices
Interface CCITT V.35 using MR-34 female connectors
Data Format Data transparent at all data rates
Data Rates Up to 2.048Mbps
Timing External; from attached Modem CSU/DSU)
Buffers Up to 512 bits per channel
 Anti-Streaming Automatic . . . Selectable time out intervals based on clock cycles

Disable . . . . . Selectable via dip switch 

Terminal Service Modes Scanning or Priority
 Front Panel Indicators . . . Power, Transmit Data, Receive Data, Channel Active, Channel Stream

Switches . . . . Enable/Disable of each Subchannel

Power Source 100-120 to 200-220VAC @ 10%, 50/60Hz, 0.16/0.08A, external 110/220 volt select switch, IEC Power Inlet, (2) 5mm Fuses
Environmental Operating Temperature . .32º to 122º F (0º to 50º C)

Relative Humidity.. . . . . . .5 to 95% Non-Condensing

Altitude. . . . . . . . . . . . . ... .0 to 10,000 feet

Dimensions DSD-2

Height . . . . . . . . . . . . . . .1.75 inches (4.44cm)

Width . . . . . . . . . . . . . . . 9.00 inches (22.86 cm)

Length . . . . . . . . . . . . . . 9.00 inches (22.86 cm)

DSD-4

Height . . . . . . . . . . . . . . .1.75 inches (4.44cm)

Width . . . . . . . . . . . . . . . 13.35 inches (33.09 cm)

Length . . . . . . . . . . . . . . 9.00 inches (22.86 cm)

Weight DSD-2 .... 2 pounds (0.914 Kg)

DSD-4 .... 4.5 pounds (2.1 Kg)

Warranty Three Years, Return to Factory
Regulatory Approvals Tested According to

UL 60950-1:2003, CAN/CSA-C22.2 No. 60950-1:2003

FCC Part 15, Class A
Ordering Information Model: DSD-2
Description: 2 Port Digital Sharing Device

Model: DSD-4
Description: 4 Port Digital Sharing Device

Included with each unit: 1) Operations Manual

2) U.S.A. Grounded Power Cord, Part #713015

PRODUCTS

Network Delay Simulators IP Traffic Generators Data Broadcast Units Digital Sharing Devices Interface Converters Modem Emulators Code Operated Switches Serial Network Adapters TDM Multiplexers

 

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