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Crestron QM-FTDC FlipTop Data Center
The aggregate cable length of a signal path originating at a QM-FTDC and
terminating at a QM receiver must not exceed 450 feet (137 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 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 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 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.
NOTE: When used with a QM-RMCRX, delay skew should not exceed 15 ns.
QM Network Topology
QM-RMCRX-BA
QM-TX
QM
QM
QM
QM
QM
Origination Points Endpoints
QM
Midpoints
QM-FTDC
QM-MD7x2QM-MD7x2
QM-WMC
QM-RX
Identity Code
The Net ID of the QM-FTDC has been factory set to 1A. The Net IDs of multiple
QM-FTDC 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 31).
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 & Installation Guide – DOC. 6312B FlipTop Data Center: QM-FTDC • 17
- Crestron QM-FTDC 1
- Contents 3
- QuickMedia™ FlipTop Data 5
- Center: QM-FTDC 5
- FlipTop Housing 6
- Computer/Data Interface 6
- Integrated Keypad (optional) 6
- Gated Mic Preamp 6
- QuickMedia™ Transport 6
- Internal Block Diagram 8
- Specifications 9
- Physical Description 11
- 13.24 cm 12
- 15.87 cm 12
- 13 14 15 16 17 14
- 16
- Industry Compliance 19
- CresCAT-QM 20
- Identity Code 21
- Installation 22
- • Phillips screwdriver 23
- Mounting to Surface 25
- Ground Wire Connections 28
- Configuration Software 29
- C2Net Device, Slot 9 30
- 11 12 13 14 15 31
- 16 17 18 19 20 31
- Example Program 32
- Setting Microphone Gain 33
- Setting the Gating Level 34
- Uploading and Upgrading 35
- Program Checks 36
- Problem Solving 37
- Functions 38
- Reference Documents 39
- Further Inquiries 39
- Future Updates 40
- DESCRIPTION COUNTRIES 41
- Installation Notes 42
- Compensation 42
- Switchers 43
- QM-AE Audio Extractor 43
- Compatibility Charts 44
- CRESTRON Limited Warranty 46
- Tel: 888.CRESTRON 03.07 48
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