DigitalMedia 8G™ Shielded Twisted Pair
Wiring Notice
This document provides an overview of DigitalMedia 8G™ shielded twisted pair (STP) wiring.
DigitalMedia 8G STP, also referred to as DM 8G STP, transports audio, uncompressed video,
Ethernet, IR, RS-232, USB HID, and Crestron control signals over a single STP cable.
Wiring DM 8G STP Inputs/Outputs
The following cables, available from Crestron, can be used to wire DM 8G STP inputs/outputs:
CABLE
MAXIMUM SUPPORTED DISTANCE
DM-CBL-8G
DM-CBL-D
330 feet (100 meters)
200 feet (61 meters)
DM-CBL using the D cable only
200 feet (61 meters)
Unlike DM-CBL—which contains one high-speed shielded cable (D cable), one CAT5e cable, and
one DMNet cable within a single jacket—DM-CBL-8G consists of a single cable composed of four
shielded twisted pairs. DM-CBL-8G enables increased long-distance performance, allowing up to
330 feet (100 meters) compared to the 100-200 feet (30-61 meters) allowed by DM-CBL.
DM-CBL-8G allows the full length of 330 feet (100 meters) for all supported video resolutions
without any need for hardware repeaters.
DM-CBL-8G Cable Versus DM-CBL Cable
DM-CBL-8G Cable
DM-CBL Cable
NOTE: Unshielded cables of any type should not be used.
NOTE: Patch panels can be used for DM 8G STP wiring. Any shielded CAT5e/CAT6 jack can be
used. Neutrik® etherCON CAT6 products can be used in environments that require a rugged
system.
Terminating DM-CBL-8G Cable
To terminate DM-CBL-8G cable, use DM-8G-CONN connectors and the DM-8G-CRIMP tool,
which are available from Crestron:
•
DM-8G-CONN connectors are recommended for use with the DM-CBL-8G cable
because of their high protection against electromagnetic interference (EMI). Other
shielded connectors may not provide enough immunity against external interference.
•
DM-8G-CRIMP is a tool that allows hand crimping of a DM-8G-CONN connector.
For information about proper termination of the DM-CBL-8G cable using DM-8G-CONN
connectors and the DM-8G-CRIMP tool, refer to the latest version of the DM-8G-CONN-100 and
DM-8G-CRIMP Quickstart Guide, Doc. 7064. The document is available from the Crestron
website (www.crestron.com/manuals).
Crestron Electronics, Inc.
15 Volvo Drive, Rockleigh, NJ 07647
Tel: 888.CRESTRON Fax: 201.767.7576
www.crestron.com
Specifications subject to
change without notice.
2029038
DOC. 7042A
08.10
DigitalMedia™ 8G STP Wiring
Crestron DM 8G STP
To ensure that you have terminated a DM-CBL-8G cable properly,
use a shielded twisted pair (STP) cable tester such as the
IDEAL® LinkMaster™ tester. In addition, verify that the green DM link
status LED on the DM IN or DM OUT port of two connected DM 8G
STP devices lights to indicate a valid connection.
DM IN/OUT Port
Powering DM 8G STP Devices
DM 8G STP devices, such as the DM-TX-201-C and DM-RMC-100-C, can be powered using
power over DM. A DigitalMedia switcher can power connected DM 8G STP devices by injecting
802.3af Power over Ethernet (PoE) into the input or output card of the switcher as shown below.
DM 8G STP Devices Using Power over DM (DM-MD8X8, DM-TX-201-C, and DM-RMC-100-C Shown)
NOTE: The internal power supply of the DM switcher does not power DM 8G STP devices.
NOTE: If you plug a DM 8G STP cable that is powered over DM into the wrong jack, the cable
has built-in protection against injecting power onto other products. The cable that is powered over
DM has the same protection as 802.3af Power over Ethernet.
NOTE: A DM switcher accepts all types of DM input and output cards simultaneously. As a
result, DM 8G STP and DM CAT devices can be connected simultaneously to a DM switcher.
2 • DigitalMedia 8G™ STP Wiring
Notice – DOC. 7042A