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Crestron 

QM-DA

 

 

QuickMedia™ Distribution Amplifier

 

QM-DA (Rear View – QM-DA-8 Shown) 

2

3

4

6

3

5

 

Connectors, Controls & Indicators 

CONNECTORS

1

CONTROLS & 

INDICATORS 

DESCRIPTION 

1 PWR 

LED Indicates 24 Volts DC power supplied from 

Cresnet control network. 

QM IN

2, 3

 

 

(1) 8-wire RJ-45 female and (1) 4-pin 3.5 mm 
detachable terminal block comprising (1) 
QuickMedia input port with Cresnet; 
Connects to Cresnet and QM output port of 
another QuickMedia device via CresCAT-QM 
cable.

4

 

24 G 

 

(1, 2 or 4)

5

 2-pin 5 mm detachable terminal 

block(s) providing (1) power connector per 
every (4) output NET ports; 
Receives 24 Volts DC from an external 
Cresnet power supply; 
Maximum load: 75 Watts 

QM OUT

2, 3

 

 

(4, 8 or 16)

6

 8-wire RJ-45 female and (4, 8 or 

16)

5

 4-pin 3.5 mm detachable terminal 

blocks comprising (4, 8 or 16)

5

 QuickMedia 

output ports with Cresnet; 
Connect to Cresnet and QM input ports of 
other QuickMedia devices via CresCAT-QM 
cable.

4

 

 

(1) 6-32 screw, chassis ground lug. 

NET 

 

(1) 4-pin 5 mm detachable terminal block; 
Cresnet slave port; connects to Cresnet 
control network; 
Power input for QM-DA and input NET port. 

          

Pin 1  (24)  Power (24 Volts DC) 

          

Pin 2  (Y) 

Data 

          

Pin 3  (Z) 

Data 

          

Pin 4  (G) 

Ground 

1.  Interface connectors for 

24 G

 (2-pin) and 

NET

 (4-pin) ports are provided with the unit. 

2.  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 table on 
the following page for connector pinouts. 

 

Operations Guide – DOC. 6547A 

QuickMedia™ Distribution Amplifier: QM-DA  

  5 

Summary of Contents for QM-DA

Page 1: ...Crestron QM DA QuickMedia DistributionAmplifier Operations Guide...

Page 2: ...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 respectiv...

Page 3: ...iption 3 Industry Compliance 6 Setup 7 Network Wiring 7 QuickMedia Wiring 7 Installation 8 Hardware Hookup 10 Problem Solving 12 Troubleshooting 12 Check Network Wiring 13 Reference Documents 14 Furth...

Page 4: ......

Page 5: ...A 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...

Page 6: ...Video RGB DA Distribution amplifier 1 to 4 in QM DA 4 1 to 8 in QM DA 8 1 to 16 in QM DA 16 distributes QM video input signal to all outputs 4 in QM DA 4 8 in QM DA 8 16 in QM DA 16 Gain 0 dB Audio D...

Page 7: ...ns Height 1 70 in 4 32 cm Width 17 03 in 43 25 cm without ears 19 01 in 48 29 cm with ears Depth QM DA 4 and QM DA 8 6 64 in 16 86 cm QM DA 16 10 14 in 25 75 cm Weight QM DA 4 2 82 lbs 1 28 kg QM DA 8...

Page 8: ...View QM DA 8 Shown 19 01 in 48 29 cm 1 70 in 4 32 cm 17 03 in 43 25 cm 1 QM DA 4 QM DA 8 Overall Dimensions Bottom View QM DA 8 Shown 6 64 in 16 86 cm QM DA 16 Overall Dimensions Bottom View 10 14 in...

Page 9: ...3 4 8 or 16 6 8 wire RJ 45 female and 4 8 or 16 5 4 pin 3 5 mm detachable terminal blocks comprising 4 8 or 16 5 QuickMedia output ports with Cresnet Connect to Cresnet and QM input ports of other Qui...

Page 10: ...g 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...

Page 11: ...ckMedia 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 C...

Page 12: ...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 Topolog...

Page 13: ...ct 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 DA top cover Using a 2 Phillips screwdriver remove the three screws...

Page 14: ...24 VDC POWER DELIVERED INTERNALLY FROM A QM OUTPUTS QUICKMEDIA PORT CARRIES AUDIO VIDEO RGB AND MICROPHONE SIGNALS POWER 24 VDC TO FOUR OUTPUTS GROUND POWER 24 VDC TO FOUR OUTPUTS POWER 24 VDC TO FOU...

Page 15: ...ations Guide Doc 8190 NOTE Power to the QM ports on the QM DA can be applied using other configurations The total power usage of each port group must not exceed the port group s available input power...

Page 16: ...port Power LED does not illuminate QM DA is not receiving power Verify cable plugged into the large 5 mm Cresnet port is secure Power is not supplied to branch Apply sufficient power to branch Faulty...

Page 17: ...wing equation to calculate the cable length value on the equation s left side Cable Length Equation L Length of run or chain in feet R 6 Ohms Crestron Certified Wire 18 AWG 0 75 MM or 1 6 Ohms Cresnet...

Page 18: ...ce in your local time zone refer to the Crestron website www crestron com offices for a listing of Crestron worldwide offices You can also log onto the online help section of the Crestron website www...

Page 19: ...r 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 r...

Page 20: ...Crestron Electronics Inc Operations Guide DOC 6547A 15 Volvo Drive Rockleigh NJ 07647 2018196 Tel 888 CRESTRON 11 07 Fax 201 767 7576 Specifications subject to www crestron com change without notice...

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