Crestron QM-MD4X4
4X4 QuickMedia™ Matrix Switcher
Operations Guide
This document was prepared and written by the Technical Documentation department at:
Crestron Electronics, Inc.
15 Volvo Drive
Rockleigh, NJ 07647
1-888-CRESTRON
All brand names, product names and trademarks are the property of their respective owners.
©2007 Crestron Electronics, Inc.
Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Contents
4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 1
Introduction ...............................................................................................................................1
Features and Functions................................................................................................ 1
Applications.................................................................................................................2
Internal Block Diagram ............................................................................................... 4
Specifications ..............................................................................................................6
Physical Description.................................................................................................... 7
Industry Compliance .................................................................................................11
Setup ........................................................................................................................................ 12
Network Wiring......................................................................................................... 12
QuickMedia Wiring................................................................................................... 12
Identity Code ............................................................................................................. 13
Supplied Hardware.................................................................................................... 13
Hardware Hookup .....................................................................................................15
Programming Software............................................................................................................17
Earliest Version Software Requirements for the PC .................................................17
Programming with Crestron SystemBuilder.............................................................. 17
Programming with SIMPL Windows........................................................................ 17
Example Program...................................................................................................... 19
Uploading and Upgrading........................................................................................................ 20
Establishing Communication.....................................................................................20
Programs and Firmware ............................................................................................20
Program Checks ........................................................................................................21
Operation .................................................................................................................................22
Operating Modes .......................................................................................................22
System Mode Operation-Viewing Signal Routing..................................................... 22
Local Mode Operation-Switching Signal Routing ....................................................22
Problem Solving ...................................................................................................................... 24
Troubleshooting......................................................................................................... 24
Check Network Wiring..............................................................................................25
Reference Documents................................................................................................26
Further Inquiries........................................................................................................ 26
Future Updates ..........................................................................................................26
Return and Warranty Policies.................................................................................................. 27
Merchandise Returns / Repair Service ......................................................................27
CRESTRON Limited Warranty.................................................................................27
Operations Guide – DOC. 6546A Contents • i
Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
g
4X4 QuickMedia™ Matrix
Switcher: QM-MD4X4
Introduction
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
• QuickMedia technology carries high-resolution RGB, video, stereo
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.
®
ports with 24VDC power
®
Operations Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 1
4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
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.
QM-MD4X4 in a Lecture Hall Application
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Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
QM-MD4X4 in 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
Operations Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 3
).
4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Internal Block Diagram
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.
Internal Block Diagram of the QM-MD4X4
4 • 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 Operations Guide – DOC. 6546A
Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Up to two tiers of QM-MD4X4s can be cascaded to provide up to 16 QM inputs
through one QM-MD4X4 as shown in the following block diagram.
Multiple QM-MD4X4s Cascaded to One QM-MD4X4
Operations Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 5
4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Specifications
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).
6 • 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 Operations Guide – DOC. 6546A
Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Physical Description
This section provides information on the connections, controls and indicators
available on your QM-MD4X4.
QM-MD4X4 Physical View (front)
QM-MD4X4 Physical View (rear)
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4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
QM-MD4X4 Overall Dimensions
10.14 in
(25.75 cm)
17.07 in
(43.35 cm)
1 2 3 4 5 6 7 8 9 10
1112 1311
1
# CONNECTORS
,
CONTROLS, &
INDICATORS
1 PWR LED
2 NET LED
3 AUDIO BREAK
(1) green LED, indicates 24 Volts DC power
supplied from Cresnet control network
(1) yellow LED, indicates communication with
Cresnet system
(1) recessed pushbutton & red LED, enables
audio breakaway in Local mode, indicates
audio breakaway in System mode
14
15
DESCRIPTION
1.70 in
(4.32 cm)
(continued on following page)
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Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Connectors, Controls, & Indicators (continued)
# CONNECTORS1,
CONTROLS, &
INDICATORS
4 A
5 V
6 SYS
7 LOCAL
8 ENTER
DESCRIPTION
(1) pushbutton & red LED, selects audio
routing in Local mode when audio breakaway
is enabled, selects audio routing view in
System mode
(1) pushbutton & red LED, selects video
routing in Local mode when audio breakaway
is enabled, selects video routing view in
System mode
(1) pushbutton & red LED, activates Cresnet
system control mode
(1) recessed pushbutton & red LED,
activates local front panel control mode
(1) pushbutton & red LED, implements
routing set by IN and OUT buttons in Local
mode
9 IN 1 through 4
10 OUT 1 through 4
11 24/G
(continued on following page)
(4) pushbuttons & red LEDs, select inputs to
be routed in Local mode, select routing view
for a given input in System mode
(4) pushbuttons & red LEDs, select output
destination(s) in Local mode, select routing
view for a given output in System mode
(2) 2-pin 5mm detachable terminal blocks
providing (1) power connector per (4)
Cresnet ports;
Receive 24 Volts DC from external Cresnet
power supplies;
Maximum Load: 75 watts each
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4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Connectors, Controls, & Indicators (continued)
# CONNECTORS1,
DESCRIPTION
CONTROLS, &
INDICATORS
12 QM IN 1 through 4
1
2,3
8
13 QM OUT 1 through 4
1
8
14 NET
15
SETUP
(LED and button)
1. Interface connectors for NET and 24/G ports are provided with the unit.
2. To determine which is pin 1 on the cable, hold the cable so that the end of the eight pin modular jack
is facing away from you, with the clip down and copper side up. Pin 1 is on the far left.
3. The eight-pin RJ-45 QuickMedia transport port accepts CAT5E/CAT6 carrying audio, video and
microphone signals. The QM input port conforms to the 568B wiring standard. Refer to the following
table for connector pinouts.
RJ-45 PIN
NUMBER
1 WHITE/ORANGE
2 ORANGE
3 WHITE/GREEN
4 BLUE
5 WHITE/BLUE
6 GREEN
7 WHITE/BROWN
8 BROWN
4. For QuickMedia wiring, use CAT-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
(137m) 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).
WIRE COLORS
(EIA 568B)
(4) 8-wire RJ-45 female and (4) 4-pin 3.5mm
detachable terminal blocks comprising (4)
QuickMedia input ports with Cresnet;
Connect to Cresnet and QM output ports of
other QuickMedia devices via CresCAT-QM
cable4
2,3
(4) 8-wire RJ-45 female and (4) 4-pin 3.5mm
detachable terminal blocks comprising (4)
QuickMedia output ports with Cresnet;
Connect to Cresnet and QM input ports of
other QuickMedia devices via CresCAT-QM
cable4
(1) 4-pin 5mm detachable terminal block;
Cresnet slave port; connects to Cresnet
control network
Pin 1 (24) Power
Pin 2 (Y) Data
Pin 3 (Z) Data
Pin 4 (G) Ground
(1) miniature pushbutton & red LED, used for
touch-settable ID (TSID)
QM ASSIGNMENT: RGB
- RGB RED
+ RGB RED
- RGB GREEN
+ DIGITAL AUDIO
- DIGITAL AUDIO
+ RGB GREEN
- RGB BLUE
+ RGB BLUE
QM ASSIGNMENT:
COMPOSITE, S-VIDEO,
COMPONENT AND AUDIO
- CHROMINANCE (- Pr)
+ CHROMINANCE (+ Pr)
- LUMINANCE (- Y)
+ DIGITAL AUDIO
- DIGITAL AUDIO
+ LUMINANCE (+ Y)
- COMPOSITE (- Pb)
+ COMPOSITE (+ Pb)
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Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Industry Compliance
As of the date of manufacture, the QM-MD4X4 has been tested and found to comply
with specifications for CE marking and standards per EMC and
Radiocommunications Compliance Labelling.
NOTE: This device complies with part 15 of the FCC rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful interference and
(2) this device must accept any interference received, including interference that may
cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy
and if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Operations Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 11
4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Setup
Network Wiring
When wiring the network, consider the following:
• Use Crestron Certified Wire.
• Use Crestron power supplies for Crestron equipment.
• Provide sufficient power to the system.
CAUTION: Insufficient power can lead to unpredictable results or damage
to the equipment. Please use the Crestron Power Calculator to help calculate
how much power is needed for the system (www.crestron.com/calculators
• For larger networks, use a Cresnet Hub/Repeater (CNXHUB) to maintain
signal quality.
For more details, refer to “Check Network Wiring” on page 25.
).
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), which is available for download from the Crestron website.
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 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
12 • 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 Operations Guide – DOC. 6546A
Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
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 transmitting S-video, luminance uses the green video pathway and
chrominance uses the red video pathway. When transmitting composite video, the
signal is carried on the blue video pathway.
NOTE: When using CresCAT-QM-P or CresCAT-QM-NP 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-MD4X4 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.
QM Network Topology
Origination Points Endpoints
QM
QM-TX
QM
QM-FTDC
QM-WMC
Midpoints
QM
QM
QM
QM-MD4X4QM-MD4X4
TPS-12G/15G-QM-L
TPS-12G/15G-QM-L
QM
Identity Code
The Net ID of the QM-MD4X4 has been factory set to 32. The Net IDs of multiple
QM-MD4X4 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 20).
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 Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 13
4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Installation
Ventilation
Rack Mounting
The QM-MD4X4 should be used in a well-ventilated area. The venting holes should
not be obstructed under any circumstances.
To prevent overheating, do not operate this product in an area that exceeds the
environmental temperature range listed in the table of specifications. Consider using
forced air ventilation and/or incrementing the spacing between units to reduce
overheating. Consideration must be given if installed in a closed or multi-unit rack
assembly since the operating ambient temperature of the rack environment may be
greater than the room ambient temperature. Contact with thermal insulating materials
should be avoided on all sides of the unit.
The QM-MD4X4 can be mounted in a rack or stacked with other equipment. Two
“ears” are provided with the QM-MD4X4 so that the unit can be rack mounted.
These ears must be installed prior to mounting. Complete the following procedure to
attach the ears to the unit. The only tool required is a #2 Phillips screwdriver.
WARNING: To prevent bodily injury when mounting or servicing this unit in a
rack, take special precautions to ensure that the system remains stable. The following
guidelines are provided to ensure your safety:
• When mounting this unit in a partially filled rack, load the rack from the
bottom to the top with the heaviest component at the bottom of the rack.
• If the rack is provided with stabilizing devices, install the stabilizers before
mounting or servicing the unit in the rack.
NOTE: If rack mounting is not required, rubber feet are provided for tabletop
mounting or stacking. Apply the feet near the corner edges on the underside of the
unit.
NOTE: Reliable earthing of rack-mounted equipment should be maintained.
Particular attention should be given to supply connections other than direct
connections to the branch circuit (e.g. use of power strips).
To install the ears:
1. There are screws that secure each side of the QM-MD4X4 top cover. Using
a #2 Phillips screwdriver, remove the three screws closest to the front panel
from one side of the unit. Refer to the diagram following step 3 for a
detailed view.
2. Position a rack ear so that its mounting holes align with the holes vacated
by the screws in step 1.
3. Secure the ear to the unit with three screws from step 1, as shown in the
following diagram.
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Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Ear Attachment for Rack Mounting (this image shows a 1RU device)
4. Repeat procedure (steps 1 through 3) to attach the remaining ear to the
opposite side.
Stacking
Connect the Device
Hardware Connections for the QM-MD4X4
POWER:
24 VDC TO
QM INPUTS
1 - 4
Four “feet” are provided with the QM-MD4X4 so that if the unit is not rack
mounted, the rubber feet can provide stability when the unit is placed on a flat
surface or stacked. These feet should be attached prior to the hookup procedure.
Hardware Hookup
Make the necessary connections as called out in the illustration that follows this
paragraph. Refer to “Network Wiring” on page 12 before attaching the 4-position
terminal block connector. Apply power after all connections have been made.
When making connections to the QM-MD4X4, use Crestron power supplies for
Crestron equipment.
QM INPUTS:
QUICKMEDIA PORT CARRIES AUDIO,
VIDEO, RGB, AND MICROPHONE
SIGNALS
POWER:
24 VDC TO
QM OUTPUTS
1 - 4
QM OUTPUTS:
QUICKMEDIA PORT CARRIES AUDIO,
VIDEO, RGB, AND MICROPHONE
SIGNALS
GROUND
CRESNET:
CONNECT TO THE
CRESNET
CONTROL
NETWORK
NOTE: Ensure the unit is properly grounded.
NOTE: For optimum performance, Crestron strongly recommends using
CresCAT-QM cable, available from Crestron. Other high-quality/low skew
CAT5e/CAT6 wiring may also be used with varying performance.
The required 24 VDC power for each group of QM inputs and QM outputs can be
supplied in a variety of ways. The following wiring diagram suggests one method of
applying 24 VDC power to the QM ports. In this configuration, the C2N-SPWS300
can supply up to 75 watts of power to each group of QM ports to ensure that
sufficient power is available for QM devices that are connected to the QM-MD4X4.
The C2N-SPWS300 can also supply the power required by the QM-MD4X4.
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4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Suggested Power Connections for QM-MD4X4
QUICKMEDIA RECEIVER/PROCESSOR
QM-RMCRX-BA
300 WATT POWER SUPPLY
C2N-SPWS300
Label the Buttons
QM-MD4X4
NOTE: The QM-MD4X4 can only be powered by the 4-position terminal block
connector labeled “NET”.
NOTE: Cresnet data is fed through the NET connector that is internally wired to the
4-position mini-terminal block connector at each QM connector.
NOTE: In the configuration shown, the C2N-SPWS300 can operate in the “PWR
ON” position or the “PWR OFF SLAVE” position. For more information, refer to
the latest revision of the C2N-SPWS300 System Power Supply Operations Guide
(Doc. 8190).
NOTE: Power to the QM ports on the QM-MD4X4 can be applied using other
configurations. The total power usage of each port group must not exceed the port
group’s available input power. For example, if 75 watts is supplied to QM inputs 1
through 4, the total power consumption for those ports cannot exceed 75 watts.
Use Crestron Engraver software to print custom labels for the QM-MD4X4’s front
panel buttons and LEDS. Crestron recommends printing on 100-pound paper. Paper
weighing less than 100 pounds will tend to crumple while sliding in, while paper
weighing more than 100 pounds may not fit.
Labels can also be created using a 3/8” label maker.
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Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Programming Software
Have a question or comment about Crestron software?
Answers to frequently asked questions (FAQs) can be viewed in the Online Help
section of the Crestron website. To post a question or view questions you have
submitted to Crestron’s True Blue Support, log in at http://support.crestron.com
First-time users will need to establish a user account.
Earliest Version Software Requirements for the PC
NOTE: Crestron recommends that you use the latest software to take advantage of
the most recently released features. The latest software is available from the Crestron
website.
Crestron has developed an assortment of Windows-based software tools to develop
a Cresnet system. The following are the minimum recommended software versions
for the PC:
.
Software
TASK REQUIRED SOFTWARE VERSION
Program control system to
operate QM-MD4X4.
Upload program and firmware. Crestron Toolbox 1.06.24 or later.
Simplified programming with
wizards for QuickMedia systems
(optional but recommended)
Create labels for front panel
buttons.
SIMPL Windows version 2.08 or later with
SIMPL+ Cross Compiler version 1.1 or later
and Library update 497 or later; Also
requires Crestron Database version 19.1.0
or later
Crestron SystemBuilder™ version 3.5 or
later with Systembuilder Templates version
3.5 or later. Refer to software release notes
or Crestron website for other required
Crestron software packages.
Crestron Engraver 3.8.0.0 or later.
Programming with Crestron SystemBuilder
Crestron SystemBuilder is the easiest method of programming but does not offer as
much flexibility as SIMPL Windows. For additional details, download
SystemBuilder from the Crestron website and examine the extensive help file.
Programming with SIMPL Windows
NOTE: While SIMPL Windows can be used to program the QM-MD4X4, it is
recommended to use SystemBuilder and Digital Media Tools software for
configuring a QuickMedia system.
SIMPL Windows is Crestron’s premier software for programming Crestron control
systems. It is organized into two separate but equally important “Managers”.
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4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Configuration Manager
Configuration Manager is the view where programmers “build” a Crestron control
system by selecting hardware from the Device Library.
• To incorporate the QM-MD4X4 into the system, drag the QM-MD4X4
from the Cresnet Control Modules | QM Series folder of the Device Library
and drop it in the System Views.
Locating the QM-MD4X4 in the Device Library
• The system tree of the control system displays the device in the appropriate
slot with a default Net ID of 32 as shown in the following illustration.
C2Net Device, Slot 5
• Additional QM-MD4X4 devices are assigned different Net ID numbers as
they are added.
• If necessary, double click a device to open the “Device Settings” window
and change the Net ID, as shown in the following figure.
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Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
“QM-MD4X4 Device Settings” Window
• The ID code specified in the SIMPL Windows program must match the Net
ID of each unit. Refer to “Identity Code” on page 13.
Program Manager
Program Manager is the view where programmers “program” a Crestron control
system by assigning signals to symbols.
The symbol can be viewed by double clicking on the icon or dragging it into Detail
View. Each signal in the symbol is described in the SIMPL Windows help file (F1).
Example Program
An example program for the QM-MD4X4 is available from the Crestron website
(www.crestron.com/exampleprograms
).
Operations Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 19
4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Uploading and Upgrading
Crestron recommends using the latest programming software and that each device
contains the latest firmware to take advantage of the most recently released features.
However, before attempting to upload or upgrade it is necessary to establish
communication. Once communication has been established, files (for example,
programs or firmware) can be transferred to the control system (and/or device).
Finally, program checks can be performed (such as changing the device ID or
creating an IP table) to ensure proper functioning.
Establishing Communication
Use Crestron Toolbox for communicating with the QM-MD4X4; refer to the
Crestron Toolbox help file for details. There is a single method of communication:
indirect communication.
Indirect Communication
PC RUNNING
CRESTRON TOOLBOX
SERIAL,
ETHERNET
OR USB
CONTROL SYSTEM
CRESNET
QM-MD4 X4
• QM-MD4X4 connects to control system via Cresnet.
• Establish communication between the PC and the control system as
described in the latest version of the 2-Series Control Systems Reference
Guide (Doc. 6256).
• Use the Address Book in Crestron Toolbox to create an entry for the
QM-MD4X4 using the expected communication protocol (Indirect). Select
the Cresnet ID of the QM-MD4X4 and the address book entry of the control
system that is connected to the QM-MD4X4.
• Display the QM-MD4X4’s “System Info” window (click the
icon);
communications are confirmed when the device information is displayed.
Programs and Firmware
Program or firmware files may be distributed from programmers to installers or from
Crestron to dealers. Firmware upgrades are available from the Crestron website as
new features are developed after product releases. One has the option to upload
programs via the programming software or to upload and upgrade via the Crestron
Toolbox. For details on uploading and upgrading, refer to the SIMPL Windows help
file or the Crestron Toolbox help file.
SIMPL Windows
If a SIMPL Windows program is provided, it can be uploaded to the control system
using SIMPL Windows or Crestron Toolbox
Firmware
Check the Crestron website to find the latest firmware. (New users may be required
to register to obtain access to certain areas of the site, including the FTP site.)
To upgrade QM-MD4X4 firmware via Crestron Toolbox:
• Establish communication with the QM-MD4X4 and display the “System
Info” window.
• Select Functions | Firmware… to upgrade the QM-MD4X4 firmware.
20 • 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 Operations Guide – DOC. 6546A
Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Program Checks
Using Crestron Toolbox, display the network device tree (Tools | Network Device
Tree) to show all network devices connected to the control system. Right-click on
the QM-MD4X4 to display actions that can be performed on the QM-MD4X4.
Operations Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 21
4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Operation
Operating Modes
The QM-MD4X4 operates in either the System mode or the Local mode.
System Mode
Local Mode
Viewing Source Routing
Viewing Output Routing
Switching functions controlled by control system program. Press the SYS button to
activate System mode (accompanying LED will light).
• When in System mode, pressing input or output buttons shows
source/destination information.
Switching functions controlled by front panel buttons. Press LOCAL to activate
Local mode (accompanying LED will flash).
• Local mode may not be available if the buttons on the front panel are locked
by the control system. If the buttons are locked, the LOCAL LED will
rapidly flash three times and turn off when LOCAL is pressed. The front
panel can only be unlocked with control system programming.
System Mode Operation-Viewing Signal Routing
Press an input signal button to display all of the outputs that are connected to it.
Press an output signal button to display the input signal that is connected. All outputs
that are receiving the same input signal are also displayed.
The AUDIO BREAK LED will illuminate if there is any difference between the
audio and video route for any signal. The A and V LEDs indicate which portion of a
signal is displayed. Press A or V to select the portion to display.
NOTE: The AUDIO BREAK button has no function when the QM-MD4X4 is
operating in the System mode.
Local Mode Operation-Switching Signal Routing
Signals coming in to the QM-MD4X4 can be switched to individual or multiple
output locations. Additionally, the audio and video portions of an input signal can be
switched simultaneously or separately.
Switching Audio & Video
Simultaneously
22 • 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 Operations Guide – DOC. 6546A
1. Press LOCAL to place the QM-MD4X4 in the Local mode (the LOCAL
LED is flashing slowly).
2. Press AUDIO BREAK to turn off the audio break function. The AUDIO
BREAK LED will turn off and the V LED will be on.
NOTE: If any outputs have different audio and video sources, the audio
inputs will switch to match the video inputs.
3. Press the button corresponding to the input to be switched. The LED of the
selected input will light.
4. Press the button(s) corresponding to the output(s) to be switched. The
LED(s) of the selected output(s) will light.
Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
To disable routing to a specific output, press the corresponding output
button again. The LED will turn off.
If a button press will result in changing the current routing, the ENTER
LED will flash rapidly.
5. Press ENTER to make the connection(s) shown on the front panel. The
ENTER LED will turn off.
Changes made on the front panel are made only after the ENTER button is
pressed. If you do not press ENTER, the connection is not made.
NOTE: If ENTER has not been pressed, you can go back and “undo”
changes made to the current routing.
Switching Audio & Video
Separately
1. Press LOCAL to place the QM-MD4X4 in the Local mode (the LOCAL
LED is flashing slowly).
2. Press AUDIO BREAK to turn on the audio break function. The AUDIO
BREAK and A LEDs will turn on.
3. Press the button corresponding to the audio portion of the input to be
switched. The LED of the selected input will light.
4. Press the button(s) corresponding to the output(s) to be switched. The
LED(s) of the selected output(s) will light.
To disable audio routing to a specific output, press the corresponding output
button again. The LED will turn off.
If a button press will result in changing the current routing, the ENTER
LED will flash rapidly.
5. Press ENTER to make the audio connection(s) shown on the front panel.
The ENTER LED will turn off.
Changes made on the front panel are made only after the ENTER button is
pressed. If you do not press ENTER, the connection is not made.
NOTE: If ENTER has not been pressed, you can go back and “undo”
changes made to the current routing.
6. Press V to switch the video portion of a signal. The A LED will turn off and
the V LED will turn on.
7. Press the button corresponding to the video portion of the input to be
switched. The LED of the selected input will light.
8. Press the button(s) corresponding to the output(s) to be switched. The
LED(s) of the selected output(s) will light.
To disable video routing to a specific output, press the corresponding output
button again. The LED will turn off.
If a button press will result in changing the current routing, the ENTER
LED will flash rapidly.
9. Press ENTER to make the video connection(s) shown on the front panel.
The ENTER LED will turn off.
Changes made on the front panel are made only after the ENTER button is
pressed. If you do not press ENTER, the connection is not made.
NOTE: If ENTER has not been pressed, you can go back and “undo” and
changes made to the current routing.
Operations Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 23
4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Problem Solving
Troubleshooting
The following table provides corrective action for possible trouble situations. If
further assistance is required, please contact a Crestron customer service
representative.
QM-MD4X4 Troubleshooting
TROUBLE POSSIBLE CAUSE(S) CORRECTIVE ACTION
Device does not
function.
PWR LED does
not illuminate.
NET LED does
not illuminate.
Connected QM
devices are not
receiving power.
Poor picture
quality.
Device is not
communicating with the
network.
Device is not receiving
power from a Crestron
power source.
Device is not receiving
sufficient power.
QM-MD4X4 is not
receiving power.
QM-MD4X4 Net ID is
not set to match the Net
ID of the SIMPL
Windows program.
Power is not supplied to
the 24/G connector.
Faulty Cresnet wiring or
faulty Cresnet device.
Cables improperly
connected.
Incorrect skew settings
in the QM-RMCRX-BA
device.
Use Crestron Toolbox to poll
the network. Verify network
connection to the device.
Use the provided Crestron
power source. Verify
connections.
Use the Crestron Power
Calculator to help calculate
how much power is needed
for the system.
Verify that cables plugged
into the NET ports are
secure.
Using Crestron Toolbox, poll
the network. Verify that the
Net ID for the QM-MD4X4 is
set to match the ID specified
in the SIMPL Windows
program.
Apply sufficient power to the
24/G connector.
Remove each Cresnet
connection on the affected
input or output until power is
restored to the remaining
devices.
Verify that all cables are
secure.
Use QM Tools software to set
correct skew settings for each
QM-RMCRX-BA in the
system.
24 • 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 Operations Guide – DOC. 6546A
Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Check Network Wiring
Use the Right Wire
Calculate Power
In order to ensure optimum performance over the full range of your installation
topology, Crestron Certified Wire and only Crestron Certified Wire may be used.
Failure to do so may incur additional charges if support is required to identify
performance deficiencies because of using improper wire.
CAUTION: Use only Crestron power supplies for Crestron equipment. Failure to
do so could cause equipment damage or void the Crestron warranty.
CAUTION: Provide sufficient power to the system. Insufficient power can lead to
unpredictable results or damage to the equipment. Please use the Crestron Power
Calculator to help calculate how much power is needed for the system
(www.crestron.com/calculators).
When calculating the length of wire for a particular Cresnet run, the wire gauge and
the Cresnet power usage of each network unit to be connected must be taken into
consideration. Use Crestron Certified Wire only. If Cresnet units are to be daisychained on the run, the Cresnet power usage of each network unit to be daisychained must be added together to determine the Cresnet power usage of the entire
chain. If the unit is home-run from a Crestron system power supply network port, the
Cresnet power usage of that unit is the Cresnet power usage of the entire run. The
wire gauge and the Cresnet power usage of the run should be used in the following
equation to calculate the cable length value on the equation’s left side.
Cable Length Equation
Strip and Tin Wire
Add Hubs
L = Length of run (or chain) in feet
R = 6 Ohms (Crestron Certified Wire: 18 AWG (0.75 MM ))
or 1.6 Ohms (Cresnet HP: 12 AWG (4 MM ))
P = Cresnet power usage of entire run (or chain)
2
2
L <
40,000
Where:
R x P
Make sure the cable length value is less than the value calculated on the right side of
the equation. For example, a Cresnet run using 18 AWG Crestron Certified Wire and
drawing 20 watts should not have a length of run more than 333 feet. If Cresnet HP
is used for the same run, its length could extend to 1250 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.
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.
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.
Operations Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 25
4X4 QuickMedia™ Matrix Switcher Crestron QM-MD4X4
Reference Documents
The latest version of all documents mentioned within the guide can be obtained from
the Crestron website (www.crestron.com/manuals). This link will provide a list of
product manuals arranged in alphabetical order by model number.
List of Related Reference Documents
DOCUMENT TITLE
2-Series Control Systems Reference Guide
C2N-SPWS300 System Power Supply Operations Guide
MediaManager Applications Guide
Further Inquiries
If you cannot locate specific information or have questions after reviewing this
guide, please take advantage of Crestron's award winning customer service team by
calling the Crestron corporate headquarters at 1-888-CRESTRON [1-888-273-7876].
For assistance in your local time zone, refer to the Crestron website
(www.crestron.com/offices
You can also log onto the online help section of the Crestron website
(www.crestron.com/onlinehelp
users will need to establish a user account to fully benefit from all available features.
) for a listing of Crestron worldwide offices.
) to ask questions about Crestron products. First-time
Future Updates
As Crestron improves functions, adds new features and extends the capabilities of
the QM-MD4X4, additional information may be made available as manual updates.
These updates are solely electronic and serve as intermediary supplements prior to
the release of a complete technical documentation revision.
Check the Crestron website periodically for manual update availability and its
relevance. Updates are identified as an “Addendum” in the Download column.
26 • 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 Operations Guide – DOC. 6546A
Crestron QM-MD4X4 4X4 QuickMedia™ Matrix Switcher
Return and Warranty Policies
Merchandise Returns / Repair Service
1. No merchandise may be returned for credit, exchange or service without prior authorization
from CRESTRON. To obtain warranty service for CRESTRON products, contact an
authorized CRESTRON dealer. Only authorized CRESTRON dealers may contact the factory
and request an RMA (Return Merchandise Authorization) number. Enclose a note specifying
the nature of the problem, name and phone number of contact person, RMA number and
return address.
2. Products may be returned for credit, exchange or service with a CRESTRON Return
Merchandise Authorization (RMA) number. Authorized returns must be shipped freight
prepaid to CRESTRON, 6 Volvo Drive, Rockleigh, N.J. or its authorized subsidiaries, with
RMA number clearly marked on the outside of all cartons. Shipments arriving freight collect
or without an RMA number shall be subject to refusal. CRESTRON reserves the right in its
sole and absolute discretion to charge a 15% restocking fee plus shipping costs on any
products returned with an RMA.
3. Return freight charges following repair of items under warranty shall be paid by CRESTRON,
shipping by standard ground carrier. In the event repairs are found to be non-warranty, return
freight costs shall be paid by the purchaser.
CRESTRON Limited Warranty
CRESTRON ELECTRONICS, Inc. warrants its products to be free from manufacturing defects in materials
and workmanship under normal use for a period of three (3) years from the date of purchase from
CRESTRON, with the following exceptions: disk drives and any other moving or rotating mechanical
parts, pan/tilt heads and power supplies are covered for a period of one (1) year; touchscreen display and
overlay components are covered for 90 days; batteries and incandescent lamps are not covered.
This warranty extends to products purchased directly from CRESTRON or an authorized CRESTRON
dealer. Purchasers should inquire of the dealer regarding the nature and extent of the dealer's warranty, if
any.
CRESTRON shall not be liable to honor the terms of this warranty if the product has been used in any
application other than that for which it was intended or if it has been subjected to misuse, accidental
damage, modification or improper installation procedures. Furthermore, this warranty does not cover any
product that has had the serial number altered, defaced or removed.
This warranty shall be the sole and exclusive remedy to the original purchaser. In no event shall
CRESTRON be liable for incidental or consequential damages of any kind (property or economic damages
inclusive) arising from the sale or use of this equipment. CRESTRON is not liable for any claim made by a
third party or made by the purchaser for a third party.
CRESTRON shall, at its option, repair or replace any product found defective, without charge for parts or
labor. Repaired or replaced equipment and parts supplied under this warranty shall be covered only by the
unexpired portion of the warranty.
Except as expressly set forth in this warranty, CRESTRON makes no other warranties, expressed or
implied, nor authorizes any other party to offer any warranty, including any implied warranties of
merchantability or fitness for a particular purpose. Any implied warranties that may be imposed by law are
limited to the terms of this limited warranty. This warranty statement supersedes all previous warranties.
Trademark Information
All brand names, product names and trademarks are the sole property of their respective owners. Windows is a registered trademark
of Microsoft Corporation. Windows95/98/Me/XP/Vista and WindowsNT/2000 are trademarks of Microsoft Corporation.
Operations Guide – DOC. 6546A 4X4 QuickMedia™ Matrix Switcher: QM-MD4X4 • 27
Crestron Electronics, Inc. Operations Guide – DOC. 6546A
15 Volvo Drive Rockleigh, NJ 07647 (2016915)
Tel: 888.CRESTRON 10.07
Fax: 201.767.7576 Specifications subject to
www.crestron.com change without notice.
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