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Crestron QM-FTMC 

microphone output when an input is above the gating level, and the 
longest time before disabling the microphone after such an input.   

NOTE:  The “attack” and “decay times” are applied to both microphone inputs. 

5.  Set the system output volume to a desirable listening level. While 

providing realistic voice input and background noise levels, adjust the 
gating level and attack/decay times to eliminate undesired input while 
providing the best content quality. 

NOTE: Crestron recommends using the latest programming software and that 
each device contains the latest firmware to take advantage of the most recently 
released features. Please check the Crestron website 
(

) for the latest versions of software and 

firmware. New users are required to register to obtain access to this site. 

Assuming a PC is properly connected to the entire system, Crestron 
programming software allows the programmer to upload programs and projects 
to the system and touchpanel and firmware to the wall plates after their 
development. However, there are times when the files for the program and 
projects are compiled and not uploaded. Instead, compiled files may be 
distributed from programmers to installers, from Crestron to dealers, etc. Even 
firmware upgrades are available from the Crestron website as new features are 
developed after product releases. In those instances, one has the option to upload 
via the programming software or to upload and upgrade via the Crestron 
Toolbox.  

The following sections define how one would upload a SIMPL Windows 
program to the control system, or upgrade the firmware of the QM-FTMC. 
However, before attempting to upload or upgrade, it is necessary to establish 
communications.  

NOTE: For laptops and other PCs without a built-in RS-232 port, Crestron 
recommends the use of PCMCIA cards, rather than USB-to-serial adapters. If a 
USB-to-serial adapter must be used, Crestron has tested the following devices 
with good results: 

 

Belkin (large model) F5U103 

 

I/O Gear GUC232A (discontinued) 

 

Keyspan USA-19QW (discontinued) 

Other models, even from the same manufacturer, may not yield the same results. 

NOTE: Even with these recommended models, results may vary on the 
computer being used. 

Establishing communications is an essential step when setting up the control 
system. Once communications are established with the control system, you can 
upload programming, update firmware, and use all the diagnostic tools available 
in Crestron Toolbox. 

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