Crestron QuickMedia QM-MD5x1 User manual

Crestron QM-MD5x1
QuickMedia™ Matrix Switcher/Mixer
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.
©2005 Crestron Electronics, Inc.

Crestron QM-MD5x1 QuickMedia™ Matrix Switcher/Mixer
Contents
QuickMedia™ Matrix Switcher/Mixer: QM-MD5x1 1
Introduction ...............................................................................................................................1
Features and Functions................................................................................................1
Applications.................................................................................................................4
Specifications ..............................................................................................................6
Physical Description....................................................................................................7
Industry Compliance .................................................................................................14
Setup ........................................................................................................................................14
Network Wiring.........................................................................................................14
QuickMedia Wiring................................................................................................... 16
Identity Code .............................................................................................................18
Rack Mounting .......................................................................................................... 21
Stacking.....................................................................................................................22
Hardware Hookup ..................................................................................................... 22
Programming Software............................................................................................................23
Earliest Version Software Requirements for the PC .................................................24
Programming with SIMPL Windows ........................................................................24
Programming with VisionTools Pro-e......................................................................53
Creating Labels with Crestron Engraver ...................................................................53
Uploading and Upgrading........................................................................................................ 53
Communication Settings ...........................................................................................54
Uploading a SIMPL Windows Program....................................................................56
Firmware Upgrade..................................................................................................... 57
Operation .................................................................................................................................58
Operating Modes .......................................................................................................58
Viewing Signal Routes in the System Mode ............................................................. 59
Switching Signals in the Local Mode........................................................................59
Adjusting Speech and Program Audio Levels........................................................... 60
Problem Solving ......................................................................................................................62
Troubleshooting......................................................................................................... 62
Further Inquiries ........................................................................................................62
Future Updates .......................................................................................................... 63
Appendix: Serial Protocol.......................................................................................................64
Front Panel Functions................................................................................................ 64
Verbose Mode Functions........................................................................................... 64
Switching/Routing Functions ....................................................................................65
“Switch All” Example ...............................................................................................66
Return and Warranty Policies ..................................................................................................67
Merchandise Returns / Repair Service ...................................................................... 67
CRESTRON Limited Warranty.................................................................................67
Operations Guide - DOC. 6300 Contents •i

Crestron QM-MD5x1 QuickMedia™ Matrix Switcher/Mixer
QuickMedia™ Matrix
Switcher/Mixer: QM-MD5x1
Introduction
Features and Functions
The Crestron®QuickMedia Matrix Switcher/Mixer, QM-MD5x1 (hereinafter
referred to as MD5x1) is part of the Crestron MediaManager line of network devices,
room control systems, and signal routing solutions.
Functional Summary
• Multimedia switcher/mixer with video, audio, RGB, and QuickMedia
inputs
• Two composite/S-video/component video (three BNC connectors)
inputs and two RGBHV (15-pin) inputs with built-in sync sensing
• One RGBHV monitor pass-through connector
• One QuickMedia input port can receive RGB, S-video, composite
video, and multi-channel audio signals from another QM switcher or
QM FlipTop/Wall Plate transmitters.
• One QuickMedia™ output port for connection to QM receivers or other
QM switchers
• Four unbalanced stereo audio inputs
• Two-channel MIC mixer mixes QM microphone signals with
electronically adjustable 4-band graphic equalization for output to
respective audio mixers and QM outputs
• One line-level, balanced/unbalanced, local audio output consisting of a
stereo program channel and a mono speech channel that follows the
respective QM output (Audio Output same as QM Output)
• Mixer at the local audio output allows independent mixing of left
program, right program, and microphone signals for each local output
channel
• Local audio output features electronically adjustable volume, bass,
treble, mute and 12-band parametric/graphic equalizer
• Separate switching of audio and video portions of each input signal
(continued on next page)
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QuickMedia™ Matrix Switcher/Mixer Crestron QM-MD5x1
Functional Summary (continued)
• Auto Compensation automatically recalls microphone EQ settings,
source compensation settings and peak and boost preset values of
multiple QM origination points when acting as an endpoint
• Stores and transmits audio
p
arameters for recall by a QM receiver when
acting as a QM origination point
• Cresnet®connector for each QM port simplifies the use of QM cables
• Switching operations can be performed through a Crestron control
system or the MD5x1’s front panel
• Custom-labeled front panel buttons provide local control of switching
functions
• Expandable switching capabilities by connecting to another MD5x1, a
QM-MD7x2, a QM-MD8x8, or a QM-MD4x2 switcher
• Touch-settable ID (TSID) ready
The MD5x1 is a QuickMedia™ (also known as QM) signal routing device used for
the mixing, switching, and routing of audio, video, microphone, and QM signals
within a QM system. Audio and video input signals can be switched to the QM/line-
level output port. The presence of an MD5x1 in a system does not necessarily
improve or degrade QM signal quality, nor does it increase or decrease the length of
QM cable that can be used. An MD5x1 can be connected to another MD5x1 or other
QM switcher (such as the QM-MD8x8, QM-MD7x2, or QM-MD4x2) to provide
additional switching capabilities.
Switching
Audio and video input signals are independently switched to the output port.
Any of the five video input signals can be switched to the QM output. The five audio
inputs can be switched to the QM output and mixed into the program audio or speech
channels of the local audio output.
Mixing
The MD5x1 has built in mixers for the mixing of microphone and program audio
signals.
Microphone Mixing
The QM input can carry up to two microphone channels from a remote QM
transmitter.
The microphone signals are fed into a microphone mixer while four bands of
equalization are applied to each microphone signal. The output is routed to the
microphone channel of the QM output and the speech and program audio mixers of
the local audio output.
Program Mixing
A mixing stage is provided at the line-level output. The microphone mix described
previously, and the selected audio input is fed to this mixer. The mixer mixes the
program audio and the microphone signal into two outputs, program (stereo) and
speech (monaural). The microphone mix can be mixed into the stereo program and
the stereo program can be mixed into the speech. After mixing, volume, equalization
and tone control can be applied.
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Crestron QM-MD5x1 QuickMedia™ Matrix Switcher/Mixer
The following diagram represents the switching and mixing capabilities of the
MD5x1. The MD5x1 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 58.
Functional Diagram of the QM-MD5x1
Buffer
RGB Monitor
Passthrough
QM OUT*
QM IN 5
Program/
Mic
Splitter
QM Audio Output
Combiner
5 X 1 Video
Crosspoint
RGB 3 RGB 4
Video
Sense
EQ
Local
Stereo
Audio
Inputs
5 X 1
Stereo
Switcher
A/D
A/D
A/D
A/D
1
2
3
4
Mute
Program L
Program R
Mute Speech
AUDIO
OUT
D/A
D/A
D/A
Delay
Vol/EQ
Vol/EQ
Mix
Mix
L
L
R
R
Mic
Mic
Mic Mix
L+R
QM L+R
QM L+R
QM Mic
1 + 2
12
Video Inputs
QM-MD5X1
* ALL QM MICROPHONE MIX SIGNALS FROM THE QM-MD5X1 ARE SENT OUT ON THE
MIC 1 CHANNEL OF THE QM OUTPUT. THERE ARE NO MICROPHONE SIGNALS
ON THE MIC 2 CHANNEL OF THE QM OUTPUT.
Mix
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QuickMedia™ Matrix Switcher/Mixer Crestron QM-MD5x1
A MD5x1 can also be connected to another MD5x1, a QM-MD8x8 switcher, a
QM-MD4x2 switcher or any combination of QM switching devices. This provides
additional inputs for one MD5x1 as shown in the following diagrams.
QM-MD5x1 Connected with Other QM-Switching Devices
NOTE: When connecting multiple QM devices, the route between a QM origination
point (e.g. QM-WMC) and a QM endpoint (e.g. QM-RMCRX) cannot have more
than two midpoints (e.g. MD5x1 or other QM switchers). Refer to the following
diagram when configuring a QM network.
QM Network Topology
Applications
The MD5x1 is part of the Crestron MediaManager line of integrated presentation
solutions. It is ideally suited to work with Crestron’s MediaManager distribution
systems, wall plate media centers, FlipTop media centers, receivers and control
processors to allow quick switching of multiple A/V sources in a presentation
system. MediaManager devices are designed for conference room, auditorium, and
lecture hall applications, or anywhere else where audio, video, or computer
equipment needs to be easily connected and disconnected from a presentation system
or room control system.
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Crestron QM-MD5x1 QuickMedia™ Matrix Switcher/Mixer
The following diagram shows an MD5x1 in a lectern application.
QM Solution in Lectern using QM-MD5x1
For more information on this and other QM applications, refer to the latest revision
of the Crestron MediaManager Control, Switching and Management Applications
Guide (Doc. 6244) which can be downloaded from the Crestron website
(http://www.crestron.com/manuals).
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QuickMedia™ Matrix Switcher/Mixer Crestron QM-MD5x1
Specifications
Specifications for the QM-MD5x1 are listed in the following table.
QM-MD5x1 Specifications
SPECIFICATION DETAILS
Cresnet Power Usage 25 Watts (1.04 Amp @ 24 VDC)
Default Net ID 1D
Control System Update Files
2-Series Control System1, 2
Version C2-V3.137.CUZ or later
Input Channels
(2) Composite/RGB/S-video/component video over
BNC with built-in sensing
(2) RGBHV with built-in sensing
(4) Stereo unbalanced audio
(1) QuickMedia channel over RJ-45
Output Channels
(1) Buffered RGBHV output for port RGB4
(1) Stereo balanced/unbalanced audio output
(1) Monaural Speech balanced/unbalanced audio
outputs
(1) QuickMedia channel over RJ-45
Video Input Details (BNC)
Gain
Maximum Input
Input Impedance
Signal Sense
Signal Sync:
Resolution
Bandwidth
(Composite & S-video)
YPBPR/RGB: 0 dB (Unity gain, 75 Ohm termination)
S-video: 0 dB (Unity gain, 75 Ohm termination)
Composite: 0 dB (Unity gain, 75 Ohm termination)
PBPR/RB: 0.7 VPP, Y/G: 1.0 VPP
S-video: 1.0 VPP
Composite: 1.0 VPP
YPBPR/RGB: 75 Ohm
S-video: 75 Ohm
Composite: 75 Ohm
YPBPR: On Y
RGB: On G
S-video: On Luma
Composite: On Composite
YPBPR: On Y
RGB: On G
Up to 1600 x1200 @ 60 Hz vertical rate, NTSC up to
HDTV
> 100 MHz (-3 dB) at unity gain
RGBHV Input Details (DB15HD)
Gain
Maximum Input
Maximum Resolution
Signal Sense
Signal Sync:
0 dB (Unity gain, double termination)
R/G/B: 0.7 VPP, H/V: 5.0 VPP
1600 x 1200 @ 60 Hz vertical rate with CAT5/5E/6
cable length of 100 meters and skew rating ≤15 ns /
100 meters3
On H
Separate H & V
(continued on next page)
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Crestron QM-MD5x1 QuickMedia™ Matrix Switcher/Mixer
QM-MD5x1 Specifications (continued)
SPECIFICATION DETAILS
Audio Input Details
Format
Maximum Line-level Input
Input Impedance
Bandwidth
Stereo, unbalanced
2 VRMS
10k Ohm
20 Hz to 20k Hz
Audio Output Performance
Max. Line-level output
Output Impedance
Bandwidth
Signal-to-Noise Ratio
Total Harmonic Distortion
2 VRMS unbalanced, 4 VRMS balanced
100 Ohms unbalanced, 200 Ohms balanced
20 Hz to 20k Hz
90 dB max
0.05%
QuickMedia Performance
Gain
Nominal input impedance
Nominal output impedance
Differential input impedance
Differential output impedance
0 dB
100 Ohms
100 Ohms
50 Ohms common
50 Ohms common
QM-MD5x1 Firmware QM-MD5x1.v4.3.031.upg or later
Rack Space 1U high
Operating Temperature and Humidity 41º to 104º F (5º to 40º C),
10 to 90% Relative Humidity (non-condensing)
Dimensions and Weight Height: 1.70 in (4.32 cm) without mounting feet
Width: 17.03 in (43.24 cm) without mounting ears
Depth: 7.15 in (18.17cm)
Weight: 3.2 lbs (1.5 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.
3. Longer lengths of CAT5/5E/6 cable can be used. However, the cumulative skew must be ≤15 ns for
the entire length of cable used between all QM devices. Longer lengths of cable may experience
eventual loss of bandwidth when viewing higher resolution sources. For more information, refer to
“QuickMedia Wiring” on page 16.
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).
Physical Description
The MD5x1 is housed in a black enclosure with labeling on the front and rear panels.
Fifteen buttons with accompanying light emitting diodes (LEDs) on the front panel
are used for local control of source and destination signal switching and volume
adjustment. The source and destination selection buttons can be custom-labeled with
Crestron Engraver software and 100-pound paper. Two LEDs on the front panel
indicate power and network activity. All audio, video, QM, Cresnet®, and power
connections are made to the back of the unit. A pushbutton on the rear panel with an
accompanying LED is used to set the MD5x1’s network ID. Refer to the following
illustrations of the front and rear panels and the physical views.
Two mounting ears are provided for rack mounting, and four square rubber feet are
supplied for stability and to prevent slippage in tabletop placement or stacking
configurations.
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QuickMedia™ Matrix Switcher/Mixer Crestron QM-MD5x1
QM-MD5x1 Physical View (Front)
QM-MD5x1 Physical View (Rear)
QM-MD5x1 Physical Views
17.03 in
(43.24 cm)
7.15 in
(18.17 cm)
16.92 in
(42.98 cm)
1.70 in
(4.32 cm)
6.44 in
(16.35 cm)
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Crestron QM-MD5x1 QuickMedia™ Matrix Switcher/Mixer
Ports
All connections to the MD5x1 are made through the ports on the rear panel. Refer to
the illustrations and descriptions that follow.
NOTE: Interface connectors for the audio and NET ports are provided with the
MD5x1.
VIDEO IN
The MD5x1 contains two video inputs for connecting component, RGB (sync-on-
green), S-video, and composite video source signals using three BNC connectors for
each input. Each input is linked to a respective audio input (Video In 1 linked to the
AUD 1 port).
Connect the appropriate connectors for each incoming video signal. The following
table lists the connections to be used for each signal format as well as the signal lines
used for sync and signal detection.
Video Input Connections
SIGNAL
TYPE
COMP/PBY/Y C/PRSYNC SENSE
Component PBY PRY Y
RGB Blue Green Red G G
S-video Not connected Luma Chroma N/A Luma
Composite Composite Not Connected Not Connected N/A Composite
AUD
The MD5x1 contains four audio inputs that correspond to the two video inputs and
two RGBHV inputs. These inputs receive unbalanced stereo audio signals through a
3-position mini-terminal block connector. Inputs 1 and 2 correspond to video inputs 1
and 2 while audio inputs 3 and 4 correspond to RGB inputs 3 and 4 respectively. The
following table lists the pin assignments for the audio input connector.
Audio Input Connections
PIN NAME SIGNAL NAME
L Left
G Ground
R Right
RGB
The MD5x1 is equipped with two RGBHV inputs for receiving a computer’s RGB
video output signal. These ports can automatically detect the presence of an RGB
signal using the H-sync signal on pin 13 and can sync on the H signal on pin 13 or
the V signal on pin 14. A buffered pass-through port for connecting a secondary
computer display is connected to the port labeled RGB 4. Refer to the following table
for pin-assignments.
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QuickMedia™ Matrix Switcher/Mixer Crestron QM-MD5x1
RGB DB15HD Pin Assignments
PIN FUNCTION PIN FUNCTION
1 Red Video 9 No Connect
2 Green Video 10 Ground
3 Blue Video 11 No Connect
4 Reserved 12 Monitor Sense 1
5 Ground 13 Horizontal Sync
6 Red Ground 14 Vertical Sync
7 Green Ground 15 Monitor Sense 2
8 Blue Ground
NOTE: When looking at the MD5x1, pin 1 is the top-right pin on the connector. Pin
15 is located on the bottom-left of the connector.
IN 5
The MD5x1 contains a QM input port for connecting a QM source. This port is
designated as input 5. The QM port has an RJ-45 port for QM signals and a
corresponding 4-position mini-terminal block connector for Cresnet control signals.
For wiring information, refer to “QuickMedia Wiring” on page 16 and “Network
Wiring” on page 14.
RJ-45 Pin Assignments
PIN WIRE
COLORS
(568B)
QM ASSIGNMENT:
RGB
QM ASSIGNMENT
COMPOSITE, S-VIDEO
AND AUDIO
1 WHITE/ORANGE - RGB Red - CHROMINANCE
2 ORANGE + RGB Red + CHROMINANCE
3 WHITE/GREEN - RGB Green - LUMINANCE
4 BLUE + Digital Audio + AUDIO
5 WHITE/BLUE - Digital Audio - AUDIO
6 GREEN + RGB Green + LUMINANCE
7 WHITE/BROWN - RGB Blue - COMPOSITE
8 BROWN + RGB Blue + COMPOSITE
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: Use Crescat-QM, or good quality CAT5E / CAT6 cable to make QM
connections. The cumulative skew over the entire length must be less than 15 ns.
Refer to “QuickMedia Wiring” on page 16 for cable specifications.
NOTE: When using Crescat-QM wiring, four additional wires are included for
making Cresnet connections. Refer to “QuickMedia Wiring” on page 16 for cable
specifications.
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Crestron QM-MD5x1 QuickMedia™ Matrix Switcher/Mixer
AUDIO OUT
The line-level audio output follows the output of the QM output port. The output
consists of a 3-position mini-terminal block connector for speech output and a
5-position mini-terminal block connector for stereo program audio output. This
output provides balanced or unbalanced line-level output for use by an audio
amplifier.
The following tables list the pin assignments (from left to right) for the 3-position
and 5-position mini-terminal block connectors. For additional information, refer to
“Hardware Hookup” on page 22.
Speech Output Connections
PIN NAME SIGNAL NAME
+ Positive
- Negative
G Ground
Program Audio Output Connections (left to right)
PIN NAME SIGNAL NAME
+ Positive (left)
- Negative (left)
G Ground (right and left)
+ Positive (right)
- Negative (right)
OUT
The MD5x1 has a QM port for connecting a QM receiver or any other device with a
QM input. The QM port has an RJ-45 connector for QM signals and a corresponding
4-position mini-terminal block connector for Cresnet control signals.
The QM pin assignments for the OUT port are the same as the IN 5 port described
previously.
For wiring information, refer to “QuickMedia Wiring” on page 16 and “Network
Wiring” on page 14.
For additional information, refer to “Hardware Hookup” on page 22.
NET
This 4-position terminal block connector is used to connect the MD5x1 to the
Cresnet system. Data and power for the MD5x1 are provided via the connection.
Refer to “Network Wiring” on page 14.
Indicators & Pushbuttons
The MD5x1s indicators and pushbuttons are described in the following paragraphs.
PWR (Power)
This LED, located on the front panel, illuminates when 24 VDC is supplied to the
MD5x1 via the NET port.
NET
This LED, located on the front panel, illuminates when communication between the
control system and the MD5x1 is established (the unit is polled on the network).
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QuickMedia™ Matrix Switcher/Mixer Crestron QM-MD5x1
Illumination indicates that the SIMPL Windows program currently loaded has a
network device defined at the same Net ID as the MD5x1. The LED flashes when
communication with the processor occurs.
AUDIO BREAK
When operating in the local mode, press this button to enable separate switching of a
QM signal’s audio and video portions. Push again to disable this feature and enable
simultaneous switching. When the accompanying LED is illuminated, a QM signal’s
audio and video portions can be switched separately. When the LED is not
illuminated, the QM signals audio and video portions are switched simultaneously.
For more information on the MD5x1’s operating modes, refer to “Operating Modes”
on page 58.
A
Press this button to switch the audio portion of an input signal when operating in the
local mode. When the accompanying LED is illuminated, only the audio portion of a
QM signal will be switched. Audio can be switched separately from video only when
the AUDIO BREAK LED is illuminated.
While in the system mode, pressing A will indicate where the audio portion of a
signal is routed. For more information on the MD5x1’s operating modes, refer to
“Operating Modes” on page 58.
V
Press this button to switch the video portion of an input signal when in the local
mode. When the accompanying LED is illuminated, only the video portion of a QM
signal will be switched. Video can be switched separately from audio only when the
AUDIO BREAK LED is illuminated.
While in the system mode, pressing V will indicate where the video portion of a
signal is routed. For more information on the MD5x1’s operating modes, refer to
“Operating Modes” on page 58.
SYS (System)
Press this button to set the MD5x1 to the system mode. When the accompanying
LED is illuminated, all switching functions are controlled by the Crestron control
system. While in the system mode, routing paths for each input can be viewed on the
front panel by pressing an input or output button. For more information on the
MD5x1’s operating modes, refer to “Operating Modes” on 58.
LOCAL
Press this button to set the MD5x1 to the local mode. When the accompanying LED
is illuminated, all switching functions are controlled by MD5x1’s front panel. For
more information on the MD5x1’s operating modes, refer to “Operating Modes” on
page 58.
ENTER
When switching signals in the local mode, switch changes are not implemented until
the ENTER button is pressed. After selecting an input source and an output
destination, press ENTER to implement the change.
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Crestron QM-MD5x1 QuickMedia™ Matrix Switcher/Mixer
IN (1 through 5)
Select an input source to view or switch (depending on the selected operating mode)
by pressing the corresponding IN button. If audio break is enabled (indicated by the
AUDIO BREAK LED), only the audio or video portion (indicated by the Aor V
LED) will be switched or viewed (depending on the selected mode). For information
on operating modes and selecting input sources, refer to “Operation” on page 58.
OUT
Enable the output destination to view or switch (depending on the selected operating
mode) by pressing the OUT button. If audio break is enabled (indicated by the
AUDIO BREAK LED), only the audio or video portion (indicated by the Aor V
LED) will be switched or viewed (depending on the selected mode). For information
on operating modes and selecting output destinations, refer to “Operation” on page
58.
AUDIO OUT
Use these buttons to adjust the speech and program audio volume levels for the audio
output. Press SELECT to toggle between speech audio, program audio, speech and
program audio, or none. Adjust the selected volume level (indicated by LED) by
pressing the Jor Kbuttons.
SETUP LED and Pushbutton
The MD5x1 is TSID ready. Located on the rear of the MD5x1, the SETUP
pushbutton and its associated LED are used for setting up the unit’s network ID
during the initial configuration of a Cresnet system or when the device is being
added/replaced. Refer to “Method B (Touch Settable ID)” on page 19 for detailed
information.
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QuickMedia™ Matrix Switcher/Mixer Crestron QM-MD5x1
Industry Compliance
As of the date of manufacture, the QM-MD5x1 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.
Setup
Network Wiring
CAUTION: In order to ensure optimum performance over the full range of your
installation topology, Crestron Certified Wire, and only Crestron Certified Wire,
should be used. Failure to do so, may incur additional charges if support is required
to identify performance deficiencies as a result 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 (www.crestron.com/calculators) to help calculate how much power is
needed for the system.
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Crestron QM-MD5x1 QuickMedia™ Matrix Switcher/Mixer
CAUTION: Possible equipment damage if miswired.
NOTE: When installing network wiring, refer to the latest revision of the wiring
diagram(s) appropriate to your specific system configuration, available from the
Crestron website.
NOTE: Do not power up system until all wiring is verified. Care should be taken to
ensure data (Y, Z) and power (24, G) connections are not crossed.
When calculating the wire gauge for a particular Cresnet run, the length of the run
and the Cresnet power usage of each Cresnet unit to be connected must be taken into
consideration. If Cresnet units are to be daisy-chained on the run, the Cresnet power
usage of each network unit to be daisy-chained must be added together to determine
the Cresnet power usage of the entire chain. The length of the run in feet and the
Cresnet power usage of the run should be used in the following resistance equation
to calculate the value on the right side of the equation.
Resistance Equation
R = Resistance (refer to the following table).
L = Length of run (or chain) in feet.
P = Cresnet power usage of entire run (or chain).
R < L x P
40,000 Where:
The required wire gauge should be chosen such that the resistance value is less than
the value calculated in the resistance equation. Refer to the table after this paragraph.
Wire Gauge Values
RESISTANCE (R) WIRE GAUGE
416
618
10 20
15 22
13 Doubled CAT5
8.7 Tripled CAT5
NOTE: All network wiring must consist of two twisted pairs. One twisted pair is
the +24V conductor and the GND conductor. The other twisted pair is the Y and Z
conductors.
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.
Operations Guide - DOC. 6300 QuickMedia™ Matrix Switcher/Mixer: QM-MD5x1 •15

QuickMedia™ Matrix Switcher/Mixer Crestron QM-MD5x1
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 one set of QM wires from the output of one device to
the input of another. Installations are flexible, affordable, and fast.
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 QM transport mechanism (receiver) uses frequency compensation on each
twisted pair video input to maintain high resolutions (1600 x 1200) with
CRESCAT-QM cable (which contains both Cresnet and CAT5E wiring) and most
good quality CAT5E and CAT6 cables (where skew rating is ≤15 ns / 100 meters).
The total accumulated length of the cable determines the actual skew. For example,
when connecting the QM-WMC to an MD5x1 and then to the QM-RMCRX, the
total accumulated skew must not exceed 15 ns and the total cable length cannot
exceed 300 feet.
NOTE: The length of CAT5/5E/6 cable that can be used can vary. However, the
total skew must be ≤15 ns.
NOTE: Longer lengths of cable may experience eventual loss of bandwidth when
viewing higher resolution sources.
16 •QuickMedia™ Matrix Switcher/Mixer: QM-MD5x1 Operations Guide - DOC. 6300