Crestron QM-DA Specifications download pdf (Page 5)

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 • 1

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Crestron QM-DA Specifications Page 5