The QM-MD4X4 is a 4X4 QuickMedia matrix switcher designed to provide versatile
routing of up to four inputs from QuickMedia Wall Plates and FlipTop boxes to any
of four QuickMedia receivers. All signal routing is provided over inexpensive
CAT5e type cable* via Crestron's exclusive QuickMedia transport, supporting the
distribution of high-resolution RGB, video, stereo audio and microphone signals up
to a total of 450 feet end-to-end. Audio breakaway capability allows audio signals to
be routed independent of video signals.
Features and Functions
• Four input by four output QuickMedia matrix switcher
audio and microphone signals up to 450 feet using either Crescat-QM-P
or Crescat-QM-NP QuickMedia cable from Crestron
• Audio breakaway can route audio signals independent of video signals
• Expands number of inputs and outputs of existing QuickMedia systems
• Front panel buttons can be used to operate switcher; buttons can be
custom labeled
• Front panel buttons can be disabled for security
• Control system program can operate the switch via digital, analog, and
serial control
• QuickMedia ports include Cresnet
distribution to simplify termination of QuickMedia and Cresnet wirin
Up to two QuickMedia Matrix Switchers and Distribution Centers may be cascaded
in a given QuickMedia signal path* to support larger system configurations. For
instance, a QM-MD4X4 may be used to expand the input capacity of a QM-MD7X2,
or multiple QM Matrixes can be combined to support applications such as roomcombining with numerous inputs and outputs.
* For QuickMedia wiring use CresCAT-QM-P, CresCAT-QM-NP, CresCAT-IM-P, or quality
CAT5e/CAT6 cable with a delay skew of ≤15ns per 100m; the maximum aggregate cable length and
delay skew between any QM transmitter (origination point) and QM receiver (endpoint) is 450 ft
(137 m) and 22 ns; a maximum of two QM midpoint devices may be inserted in a given QM signal
path; exceptions apply, refer to each respective product manual for full detail.
Complete system operation can be made transparent to the end-user with all signal
routing occurring smoothly under the command of the MediaManager control
system. Control and monitoring of the QM-MD4X4 is also possible independent of
the control system using its front panel pushbuttons and LEDs. Customizable label
strips are provided to easily designate inputs and outputs by name using Crestron
Engraver software or standard 3/8" tape labels. For security, the front panel controls
can be locked out.
Every QuickMedia port on the rear panel is accompanied by a Cresnet port with 24V
DC power distribution built in to simplify termination of the QuickMedia and
Cresnet wiring.
Applications
The following diagrams show a QM-MD4X4 in a lecture hall application and a
business application.
For more information on this and other QM applications, refer to the latest revision
of the Crestron MediaManager Applications Guide (Doc. 6244) which is available
from the Crestron website (http://www.crestron.com/manuals
The following diagram represents the switching abilities of the QM-MD4X4. The
QM-MD4X4 can be operated locally (local mode) using buttons on the front panel,
or remotely from a control system (system mode). For more information, refer to
“Operating Modes” on page 22.
Specifications for the QM-MD4X4 are listed in the following table.
QM-MD4X4 Specifications
SPECIFICATION DETAILS
4X4 Video/RGB Matrix
Gain
Crosstalk
4X4 Audio Matrix
Gain
Power Requirements
Cresnet Power Usage
Default NET ID 32
Minimum 2-Series Control
System Update File
Environmental
Temperature
Humidity
Heat Dissipation
Enclosure
Chassis
Faceplate
Mounting
Dimensions
Height
Width
Depth
Weight 4.6 lbs (2.1 kg)
1. The latest software versions can be obtained from the Crestron website. Refer to the NOTE following
these footnotes.
2. Crestron 2-Series control systems include the AV2 and PRO2. Consult the latest Crestron Product
Catalog for a complete list of 2-Series control systems.
1, 2
Routes any (4) QM inputs to any of (4) QM
outputs
0dB
-60dB
Routes any of (4) QM inputs to any of (4)
QM outputs with selectable audio-followvideo or audio breakaway
0dB
15 Watts (0.62 Amps @ 24 Volts DC)
Version C2-V3.093.CUZ or later
41° to 104°F (5° to 40°C)
10% to 90% RH (non-condensing)
50 BTU/Hr
Steel, black matte powder coat finish,
vented top and sides
Extruded aluminum, black matte powder
coat finish with polycarbonate label overlay
Freestanding or 1U 19-inch rack-mountable
(adhesive feet and rack ears included)
1.70 in (4.32 cm)
19.0 in (48.26 cm) with ears;
17.07 in (43.35 cm) without ears
10.14 in (25.75 cm)
NOTE: Crestron software and any files on the website are for authorized Crestron
dealers and Crestron Authorized Independent Programmers (CAIP) only. New users
may be required to register to obtain access to certain areas of the site (including the
FTP site).