Features / Benefits
- Interface - RS-232 and Dedicated 4-Wire
- Data Rates - Synchronous to 64Kbps
- DCE/DTE Selectable RS-232 port
- Point-to-Point or Multi-point Operation up to 32 drops
- RS232 Line Driver
- Timing - Internal or External
- Low EMI - Superior Signal Fidelity
- Data Carrier Detect (DCD) - Constant or Switched Carrier operation
- Contention - Selectable for RTS or Data
- Anti-Streaming - Enable or Disable
- RTS/CTS - Variable delay settings
- 110/220VAC switch selectable
Description
The Digital Multidrop Extender (DME) RS-232 line driver utilizes state of the art digital CMOS technology to provide a feature filled product at a very affordable price. The DME transmits and receives data bi-directionally at data rates up to 64kbps. The unit is designed for synchronous Point-to-Point or Multi-point operation.
Applications that benefit from the DME are Polled / Contention networks operating on Switched or Constant Carrier Operation. The DME allows the user to set up a fully digital multipoint network over a campus environment by connecting directly to the back of a CSU/DSU. In this scenario, clocking is provided by the DDS while the DME transmits digital data bi-directionally as the DTE devices are polled from the Host site.
Substantial cost savings are derived by eliminating the need for a Time Division Multiplexer (TDM) or Digital Sharing Device (DSD) behind the CSU/DSU. Additionally, analog Line Drivers are no longer required from the subchannel ports of the TDM or DSD to remote DTE devices.
Installation is fast and simple by setting the internal DCE/DTE switch, Clocking, Constant or Switched Carrier Operation and the Contention Mode of RTS or Data.
The DME provides optional Anti-Streaming circuitry. Once enabled, Anti-Streaming will automatically remove a defective DTE from service if the Data / Control criteria is present for the user defined selection period.
The DME is housed in a sturdy metal enclosure and operates on 110/220VAC.
The DME has a three year warranty and a 24 hour turnaround on warranty repairs.
SPECIFICATIONS |
|
| Application | Full Duplex Synchronous Point-to-Point or Multi-point Digital Data Transmission |
| Capacity | Up to 32 drops per site |
| Interface | RS-232 and 4-Wire EMI reduced RS-485 |
| Data Format | Dependent on data rate and wire gauge |
| Data Rates | 2.4k to 64Kbps with 3/4 baud rates |
| Switches | DCE/DTE for RS-232 port |
| RS-232 Physical Interface | Female DB-25 Connector |
| 4-Wire Physical Interface | (2) RJ-45's and 4-Position Terminal Block |
| 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 |
| Line Requirements | Four Wire private, unloaded with no bridge taps |
| Weight | 2 pounds (0.914Kg) |
| 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 | Height . . . . . . . . . . . . . . .1.75 inches (4.44cm)
Width . . . . . . . . . . . . . . 7.90 inches (20.07 cm) Length . . . . . . . . . . . . . . 9.00 inches (22.86 cm) |
| Weight | 2 pounds (0.914Kg) |
| Warranty | Three Years, Return To Factory |
| Ordering Information | Part #: 106000 Model: DME Description: Digital Multidrop Extender |
| Included with each unit: | 1) Operations Manual
2) U.S.A. Grounded Power Cord, Part #713015 3) Optional Power Cords ....A) United Kingdom, Part #713016 ....B) Continental Europe, Part #713017 ....C) Other: Specify Country on Purchase Order 1) Spare Data Center Fuses ....A) 160ma Fuse, Qty (2) Part #714000 ....B) 80ma Fuse, Qty (2) Part #71400 |