RAD HCD-4 4-Wire 4 Mbps HDSL-Based Modem

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  301-924-7400 Support

RAD HCD-4 4-Wire 4 Mbps HDSL-Based Modem

Data rates up to 4 Mbps
 Range up to 3 km (1.9 miles) over 24 AWG cable
 Reliable performance over poor quality or noisy lines
 Digital interfaces: built-in IP router, built-in Ethernet bridge, V.35, RS-530
 Setup and monitoring via front panel LCD or via ASCII terminal


Using HDSL technology, the HCD-4 operates at rates of n x 64 kbps up to 4 Mbps over 4-wire lines.

The HCD-4 extends the transmission range up to 3 km (1.9 miles) over 24 AWG (0.5 mm) 4-wire copper cable.

HCD-4 compensates for line impairments, bridge taps and mixed cabling by using advanced equalization, adaptive filtering, echo cancellation technology and 2B1Q line coding. High immunity to background noise enables transmission of multiple HDSL lines via the same physical cable.

Setup, control and monitoring of status and diagnostic information can be performed using one of the following:
- front panel LCD with three pushbuttons, using  menu-driven management
- ASCII terminal connected to the async control  port using command line interpreter 

 Supporting a built-in Ethernet bridge or built-in IP router, the HCD-4 provides a cost-effective and easy-to-install solution for LAN-to-LAN applications. The HCD-4 supports V.35 and  RS-530, enabling connection of digital equipment at 4 Mbps for corporate applications.

HCD-4 is available as a standalone unit or can  be mounted in a standard 19" rack using  special hardware. Two HCD-4 units can be mounted side-by-side.


4 Mbps HDSL-based data modem

* Specify power supply:

AC for 100 to 240 VAC

48 for for -48 VDC

& Specify DTE interface:

V35 for V.35A interface

530 for RS-530 interface

X21 for X.21 interface

UTP for IR-ETH module

UTP/QH for IR-ETH/QH module

IP for IR-IP module


Special hardware for mounting one or two HCD-4 units in a 19-inch rack





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For discount pricing on RAD Data Communications  
email us at sales@data-connect.com
or call 301-924-7400