Crestron
QM-MD7x2
QuickMedia™ Matrix Switcher/Mixer
QM-MD7x2 Specifications (continued)
SPECIFICATION DETAILS
Audio Input Details
Format
Maximum Line-level Input
Input
Impedance
Bandwidth
Stereo, unbalanced
2 V
RMS
10k Ohm
20 Hz to 20k Hz
Microphone Input Details
Types
Accepted
Performance
Input Level Range
Max Input Voltage
Input
Impedance
•
Low impedance (mic-level) microphones with 60
to 600 ohms output impedance
•
Line-level microphones with balanced or
unbalanced output
Mic-level: -60 dBV to -20 dBV (-58 dBU to -18 dBU)
Line-level: -28 dBV to +12 dBV / -26 dBu to +14 dBu
(balanced)
-28 dBV to +6 dBV / -26 dBu to +8 dBu
(unbalanced)
4 V
RMS
balanced, 2 V
RMS
unbalanced (line-level)
10K Ohm
Phantom
Power
Noise
Gate
48V @ 10 mA per input, software switchable, 3.4k
Ohms impedance
User adjustable level with variable attack and decay
time (10 ms to 5 seconds)
Audio Output Performance
Max. Line-level output
Output
Impedance
Bandwidth
Signal-to-Noise
Ratio
Total Harmonic Distortion
2 V
RMS
unbalanced, 4 V
RMS
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-MD7x2 Firmware
QM-MD7x2.v3.2.262.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: 4.2 lbs (1.9 kg)
1.
The latest software versions can be obtained from the Downloads | Software Updates section of the
Crestron website (www.crestron.com). 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 15.
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).
Operations Guide - DOC. 6273
QuickMedia™ Matrix Switcher/Mixer: QM-MD7x2
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