ADC 75 Ohm Interconnect User Manual
Digital Monitor Module System
75 Ohm Interconnect
Designed as a flexible solution for network signal management, ADC’s Digital Monitor Module
(DMM) system provides a centralized coaxial termination and interconnection point between
network elements (NE). The DMM system allows a permanent, dedicated connection between
two NEs while providing dual, nonintrusive test access points for bidirectional monitoring of
the network signal. Ensuring unsurpassed quality, this interconnect solution features cable
management designed to increase reliability, maintain signal flow, and allow easy cable
identification. To enhance network flexibility, the DMM system allows modules to be installed
in a chassis as network requirements increase.
Features:
• Provides bidirectional, nonintrusive signal testing
• Supports E1 (2.048 Mbps), E3 (34.368 Mbps), or STM-1 (155.52 Mbps) signal rate applications
• Modular design allows for capital investment to coincide with revenue growth
• Mounts in standard 600 mm bays
• Quality cable management and circuit identification markings
SPEC SHEET
www.adc.com • +1-952-938-8080 • 1-800-366-3891
Digital Monitor Module System
75 Ohm Interconnect
Application
The DMM system is used primarily in co-location environments, DDF locations, and customer premises
as a connection point between NEs. Each NE is semipermanently cabled to IN/OUT connectors in either
the front or rear of each module. The digital signal is accessed through the two MON OUT connectors
on the front of each module for testing and monitoring. These dual monitor ports allow access to both
directions of the circuit from a single location. This saves valuable technician time when the other side of
the termination is located far away, in another room, or is inaccessible.
Network
Element A
Tx OUT
Rx IN
DMM
MON
Z-OUT
MON
A-OUT
Test
Unit
OUT
IN
OUT
IN
Digital Monitor Module System
Network
Element Z
Tx OUT
Rx IN
12/06 • 103978AE
www.adc.com • +1-952-938-8080 • 1-800-366-3891
2
Digital Monitor Module System
75 Ohm Interconnect
Configurations
The DMM system is available in several chassis and rack configurations to create a customized
interconnect solution. Each module is ordered separately and may be installed in any DMM chassis or
rack configuration as the network expands, allowing capital investment to coincide with revenue growth.
Modules
Multiple connector interface types and locations are available to complement existing network designs.
Individual modules allow chassis to easily match existing NE circuit counts.
Standard Configuration
Up to 12, 24-position chassis are designed to mount in a standard 600 mm rack for a total of 288
circuits. Cable management bars, trays, and labeling are provided on each chassis.
High-Density Configuration
This uniquely designed dual chassis features two separate compartments, each accommodating up to
eight modules mounted horizontally. The two compact compartments are mounted side-by-side in a
specially designed dual-column 600 mm rack. This high-density configuration allows a total of 352
circuits in one rack. Cable management bars and four vertical cabling ducts ensure proper routing for
high-density cabling.
Wall-Mount Box
This six-position enclosure serves as an interconnect demarcation point between network providers and
customers. Separate locks on each door secure connections from unwanted access.
Digital Monitor Module System
12/06 • 103978AE
www.adc.com • +1-952-938-8080 • 1-800-366-3891
3
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