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Crestron QM-FTMC  
 
 
FlipTop Media Center
 
Make sure the cable length value is less than the value calculated on the right 
side of the equation. For example, a Cresnet run drawing 20 watts should not 
have a length of run more than 333 feet.   
NOTE:  All Crestron certified Cresnet wiring must consist of two twisted pairs. 
One twisted pair is the +24V conductor and the GND conductor, and the other 
twisted pair is the Y conductor and the Z conductor.  
NOTE:  When daisy-chaining Cresnet units, strip the ends of the wires carefully 
to avoid nicking the conductors. Twist together the ends of the wires that share a 
pin on the network connector, and tin the twisted connection. Apply solder only 
to the ends of the twisted wires. Avoid tinning too far up the wires or the end 
becomes brittle. Insert the tinned connection into the Cresnet connector and 
tighten the retaining screw. Repeat the procedure for the other three conductors. 
NOTE:  For larger networks (i.e., greater than 28 network devices), it may 
become necessary to add a Cresnet Hub/Repeater (CNXHUB) to maintain signal 
quality throughout the network. Also, for networks with lengthy cable runs, it 
may be necessary to add a Hub/Repeater after only 20 devices.  
QM Network Wiring 
When connecting multiple QM devices, the route between a QM origination 
point (e.g., QM-FTMC) and a QM endpoint (e.g., QM-RMCRX-BA) cannot 
have more than two midpoints (e.g., QM-MD7x2 or other QM switchers). Refer 
to the following diagram when configuring a QM network. Refer to Appendix B 
on page 57 for additional QuickMedia installation information. 
QM Network Topology 
 
Crestron Toolbox 
The Crestron Toolbox (replacement for Crestron Viewport, you may continue to 
use Viewport if desired) is a broad-based software package that accomplishes 
multiple system tasks, primarily using an RS-232 or TCP/IP connection between 
a PC and one or more Crestron control systems.  
You can use the Crestron Toolbox to: 
• 
Observe system processes. 
• 
Upload operating systems and firmware. 
• 
Upload programs and touchpanel projects. 
• 
Set or change device Network IDs. 
Operations  & Installation Guide – DOC. 6311A 
FlipTop Media Center: QM-FTMC 
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