Crestron
QM-DA
QuickMedia™ Distribution Amplifier
QuickMedia™ Distribution
Amplifier: QM-DA
Introduction
The QM-DA-4, QM-DA-8 and QM-DA-16 are QuickMedia™ (QM) distribution
amplifiers designed to distribute a single QM signal to up to four, eight or 16 QM
receivers. (The QM-DA-4 has four outputs, the QM-DA-8 has eight outputs and the
QM-DA-16 has 16 outputs.) All signal distribution is provided over inexpensive
CAT5e type cable via Crestron’s exclusive QM transport, supporting high resolution
RGB, video, stereo audio and microphone signals up to a total distance of 450 feet
(137 meters).
Up to two QM distribution amplifiers, matrix switchers and distribution centers may
be cascaded in a given QM signal path to support versatile system configurations.
For instance, a QM-DA-4 may be used to expand the output capacity of a
QM-MD4X2 to feed a single output to four different displays. A QM-DA-8 may be
used to feed that output to eight different displays and a QM-DA-16 may be used to
feed that output to sixteen different displays.
Every QM port on the rear panel is accompanied by a Cresnet
®
port with 24 VDC
power distribution built in to simplify termination of the QM and Cresnet wiring.
On the QM-DA-16 (only), a built-in Cresnet hub provides three isolated segments,
each supporting 3000 feet (914 meters) of Cresnet cabling and approximately 25
Cresnet devices.
NOTE:
For QM wiring use CresCAT-QM, CresCAT-IM or quality CAT5e/CAT6
cable with a maximum delay skew of 15 ns per 100 m. The maximum aggregate
cable length and delay skew between any QM transmitter (origination point) and QM
receiver (endpoint) is 450 feet (137 meters) and 22 ns. A maximum of two QM
midpoint devices may be inserted into a given QM signal path. Exceptions apply;
refer to each respective product manual for details.
For simplicity within this guide, all models will hereinafter collectively be referred to
as QM-DA, except where noted.
Operations Guide – DOC. 6547A
QuickMedia™ Distribution Amplifier: QM-DA
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