Crestron
QM-MD4X4
4X4 QuickMedia™ Matrix Switcher
due to the added resistance and capacitance of longer cable lengths and is not
peculiar to either Crestron and/or QuickMedia systems. To ensure sufficient
bandwidth, the maximum aggregate cable length should not exceed 450 feet. The use
of lower-resolution signals may allow increased cable length but must be tested by
the installer with the sources to be used. The QM pin assignment is based on the
EIA/TIA 568B RJ-45 Jack standard.
NOTE:
When transmitting S-video, luminance uses the green video pathway and
chrominance uses the red video pathway. When transmitting composite video, the
signal is carried on the blue video pathway.
NOTE:
When using CresCAT-QM-P or CresCAT-QM-NP wiring, four additional
wires are included for making Cresnet connections.
When connecting multiple QM devices, the route between a QM origination point
(transmitter) and a QM endpoint (receiver) cannot have more than two midpoints
(e.g. QM-MD4X4 or other QM switchers). Refer to the following diagram when
configuring a QM network.
NOTE:
The aggregate length from transmitter to receiver cannot have a delay skew
or more than 22 ns.
QM Network Topology
TPS-12G/15G-QM-L
QM-TX
QM
QM
QM
QM
QM
Origination Points
Endpoints
QM
Midpoints
QM-FTDC
QM-MD4X4
QM-MD4X4
QM-WMC
TPS-12G/15G-QM-L
Identity Code
The Net ID of the QM-MD4X4 has been factory set to
32
. The Net IDs of multiple
QM-MD4X4 devices in the same system must be unique. Net IDs are changed from
a personal computer (PC) via the Crestron Toolbox™ (refer to “Establishing
Communication” on page 20).
When setting the Net ID, consider the following:
•
The Net ID of each unit must match an ID code specified in the SIMPL™
Windows
®
program.
•
Each network device must have a unique Net ID.
For more details, refer to the Crestron Toolbox help file.
Operations Guide – DOC. 6546A
4X4 QuickMedia™ Matrix Switcher: QM-MD4X4
•
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