Crestron electronic TPS-17B/W - Manual (Page 22)

Tilt Touchpanels Crestron Isys ® TPS-12B/W, TPS-15B/W & TPS-17B/W
QuickMedia Wiring
The Crestron QuickMedia cable (sold under the name “CresCAT-QM”) contains one
CAT5E cable and one Cresnet cable in Siamese jackets. Installation of any QM
device is as simple as installing CresCAT-QM wires from the output of one device to
the input of another. Installations are flexible, affordable and fast. For more
information, refer to the latest revision of the Crestron MediaManager Applications
Guide (Doc. 6244).
CresCAT-QM Cable
CresCAT-QM
Cable
NOTE: Do not untwist the two wires in a single pair for more than 1/3-1/2”
(0.84-1.27 cm) when making a connection. The twists are critical to canceling out
interference between the wires.
The aggregate cable length of a signal path originating at a QM transmitter and
terminating at the TPS-12B/W, TPS-15B/W & TPS-17B/W must not exceed 300 feet
(90 meters). Video signals may experience a loss of quality over very long lengths of
cable. This phenomenon is 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
300 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 using CresCAT-QM 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-MD7x2 or other QM switchers). Refer to the diagram on the following
page when configuring a QM network.
18 • Tilt Touchpanels: TPS-12B/W, TPS-15B/W & TPS-17B/W Operations Guide – DOC. 6464A