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Crestron 

QM-WMIC

 

Wall Plate Media Center Microphone Input

 

QM-WMIC Media Center Microphone Input Troubleshooting 
(continued) 

TROUBLE 

POSSIBLE 

CAUSE(S) 

CORRECTIVE ACTION 

Microphone 
does not 
produce sound. 

Incorrect volume 
and/or mixer 
settings on  
QM-RMCRX. 

Adjust volume and/or mixer 
settings on QM-RMCRX as 
required. 

Incorrect peak 
setting. 

Adjust QM-RMCRX peak 
control until audio is 
restored. For more 
information refer to the 
latest revision of the  
QM-RMCRX Operations 
and Installation Guide  
(Doc. 6236). 

Intermittent 
microphone 
output. 

Poor cable 
connection. 

Verify all cable 
connections. 

Microphone 
produces harsh, 
distorted sound. 

Input gain is set too 
high. 

Lower microphone input 
gain. 

“Hum” in 
microphone 
audio. 

QM device is 
improperly 
grounded. 

Ensure that all devices in 
the system are properly 
grounded. 

Operations & Installation Guide - DOC. 6245 

Wall Plate Media Center Microphone Input:  QM-WMIC  

  23 

Summary of Contents for QM-WMIC

Page 1: ...Crestron QM WMIC Wall Plate Media Center Microphone Input Operations Installation Guide ...

Page 2: ...n 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 2003 Crestron Electronics Inc ...

Page 3: ...ware 11 Programming with Crestron SystemBuilder 12 Programming with SIMPL Windows 13 Programming with VisionTools Pro e 17 Example Program 17 Adjusting the QM WMIC 18 Definitions 18 Setting Microphone Gain 20 Setting the Gating Level 20 Problem Solving 22 Troubleshooting 22 Further Inquiries 24 Future Updates 24 Return and Warranty Policies 25 Merchandise Returns Repair Service 25 CRESTRON Limited...

Page 4: ......

Page 5: ...hat are present on the QM WMC The microphone inputs feature adjustable gain and an integrated noise gate with adjustments for gating level attack time and decay time The microphone signals are transmitted with the program audio over the Crestron QuickMedia transport A QM WMIC requires a QM WMC the far right space in a 2 deep triple gang electrical box and a Decora style faceplate sold by other for...

Page 6: ...IC The following block diagram illustrates the functional capabilities of a QM WMC with the QM WMIC installed Block Diagram of Wall Plate Media Center Microphone Input 2 Wall Plate Media Center Microphone Input QM WMIC Operations Installation Guide DOC 6245 ...

Page 7: ...ic Inputs 2 Neutrik Combo XLR phone per input Rear Connectors QM WMC 1 Multi pin ribbon connector for connecting to QM WMC Microphone XLR Accepts microphones with 60 Ohm to 600 Ohm output impedance balanced Concentric Accepts line level inputs balanced tip ring sleeve or unbalanced tip sleeve Input Level Range XLR 60 dBV to 20 dBV 28 dBV to 12 dBV balanced 30 dBu to 10 dBu 28 dBV to 6 dBV unbalanc...

Page 8: ...Dimensions and Weight Width 1 77 in 4 49 cm Height 4 11 in 10 44 cm Depth 2 14 in 5 43 cm Weight 4 1 oz 0 12 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 C2N DVP4DI CP2 CP2E MC2E MC2W MP2 MP2E PAC2 PRO2 QM RMCRX an...

Page 9: ...ogram audio and can be manipulated at the receiver NOTE Phantom power is applied to the XLR connectors of both microphone inputs It cannot be switched on an individual microphone input An LED on the front of the QM WMIC indicates whether phantom power is enabled The following illustration shows the QM WMIC properly installed with a QM WMC NOTE Decorative faceplates as shown in the following illust...

Page 10: ...4 cm 1 77 in 4 49 cm All microphone connections to the QM WMIC are made through the connectors on the front panel An LED on the front of the QM WMIC indicates when phantom power is on The connection to the QM WMC is made on the rear of the unit Refer to the illustrations and descriptions that follow 6 Wall Plate Media Center Microphone Input QM WMIC Operations Installation Guide DOC 6245 ...

Page 11: ...OTE Phantom power is not applied to the inputs Phantom Power Indicator The QM WMIC has an LED that illuminates when phantom power is enabled on the XLR connectors Connection for QM WMC not labeled This 14 pin connector is used to connect the QM WMIC to the QM WMC Industry Compliance As of the date of manufacture the QM WMIC has been tested and found to comply with specifications for CE marking and...

Page 12: ...t the same time as a QM WMC Detailed installation instructions for the QM WMC can be found in the latest revision of the QM WMC Operations Installation Guide Doc 6237 which can be downloaded from the Downloads Product Manuals section of the Crestron website www crestron com NOTE If the QM WMIC is to be installed into an existing QM WMC installation all electronic connections to the QM WMC should b...

Page 13: ...ectrical box must be earth grounded or a ground wire in the electrical box OR Connect the ground wires to the Cresnet shield and connect the Cresnet shield at the QM RMCRX to the chassis of the QM RMCRX The QM RMCRX chassis must be connected to an earth ground In this instance the Cresnet shield is not connected to Cresnet ground NOTE When the Cresnet shield is used to connect QM WMC QM WMIC assem...

Page 14: ...side the electrical box and not between the box and the wall plate 8 Attach the wall plate to the electrical box using the supplied pan head screws as shown in the following diagram Install Wall Plate into Wall Box 3 GANG ELECTRICAL BOX 21 2 INCH MINIMUM DEPTH NOT SUPPLIED QM WMIC MUST BE MOUNTED TO THE RIGHT OF THE QM WMC 6 32 X 3 4 INCH PAN HEAD SCREW SUPPLIED TO MOUNT TO ELECTRICAL BOX 9 Attach...

Page 15: ... For information on programming the QM WMC refer to the latest revision of the QM WMC Operations Installation Guide Doc 6237 which can be downloaded from the Downloads Product Manuals section of the Crestron website www crestron com Setup is easy thanks to Crestron s Windows based programming software Crestron s SystemBuilder software creates a complete project with no special programming required...

Page 16: ...res The latest software is available from the Downloads Software Updates section of the Crestron website www crestron com The following are recommended software version requirements for the PC Optional SystemBuilder first release due in fourth quarter of 2003 Requires SIMPL Windows SIMPL Windows version 2 05 08 or later Requires SIMPL Cross Compiler version 1 1 Crestron Database version 16 0 5 or ...

Page 17: ...r instructions on adding a QM WMC to a SIMPL Windows program refer to the latest revision of the QM WMC Operations Installation Guide Doc 6237 which can be downloaded from the Downloads Product Manuals section of the Crestron website www crestron com NOTE While SIMPL Windows can be used to program the QM WMIC it is recommended to use SystemBuilder and Digital Media Tools software for configuring a...

Page 18: ...cribes the QM WMIC symbol in the SIMPL Windows Programming Manager NOTE Many of the signals in the QM WMIC symbol are used to adjust operating parameters such as gain gating gating level attack time and decay time For definitions and information on the effects of adjusting these parameters refer to Adjusting the QM WMIC on page 18 QM WMIC symbol in SIMPL Windows Programming Manager The following t...

Page 19: ...Specifies gating level for Mic 1 0 to 100 Mic2GatingLevel Specifies gating level for Mic 2 0 to 100 Mic1Gain Specifies gain level for Mic 1 0 to 100 Mic2Gain Specifies gain level for Mic 2 0 to 100 AttackTime Specifies attack time 10 to 100 ms DecayTime Specifies decay time 10 to 5000 ms NOTE AttackTime and DecayTime are applied to both microphone inputs QM WMIC Digital Output Signal Descriptions ...

Page 20: ... gating function is not enabled NOTE Nominal indication is reported at 20 dB below input clip level Clip indication is reported at 6 dB below input clip level QM WMIC Analog Output Signal Descriptions OUTPUT DESCRIPTION Mic1GatingLevel F Gating level feedback for Mic 1 Mic2GatingLevel F Gating level feedback for Mic 2 Mic1Gain F Gain level feedback for Mic 1 Mic2Gain F Gain level feedback for Mic ...

Page 21: ...mes and decay times Digital Media Tools software already has these controls built in Refer to the section Adjusting the QM WMIC on page 18 for instructions Example Program An example program for the wall plate is available from the Crestron FTP site ftp ftp crestron com Examples Search for the file named QM WMC_QM WMIC ZIP Operations Installation Guide DOC 6245 Wall Plate Media Center Microphone I...

Page 22: ...s that are commonly used when making adjustments to the QM WMIC Attack Time The time it takes in milliseconds from when an input signal rises above the gating level until the microphone output signal is enabled Clipping A condition in which a signal level exceeds the maximum level the clipping level a circuit can handle This is usually caused by improper gating parameters and gain settings Decay T...

Page 23: ...d Decay Time Clipping Level Gating Level Attack Time Mic Off TIME SIGNAL LEVEL Decay Time Mic On SIGNAL LEVEL TIME MICROPHONE INPUT SIGNAL QM OUTPUT SIGNAL Mic On Attack Time Decay Time Mic Off Gating Level Reached Gating Level Reached Operations Installation Guide DOC 6245 Wall Plate Media Center Microphone Input QM WMIC 19 ...

Page 24: ... normal sound level input to the microphone When the Norm indicator shows fairly consistent activity you ve reached a good signal level for the QM WMIC NOTE The clip indicator shows that the signal is clipping Let your ears be the judge but when the clip indicator is active you are approaching or have reached distortion in your QM WMIC signal Occasional clip indications on loud input are expected ...

Page 25: ...e background noise that should be gated out increase the noise gate level until the Gated indicator turns off When the input sound levels are at or below the established noise gate level the microphone output signal will be gated off 4 Set the attack time to the minimum level and the decay time to the maximum level These settings provide the shortest time to enable the microphone output when an in...

Page 26: ...Net ID is not set to match the Net ID specified in SIMPL Windows Verify SIMPL Windows program for setting Net ID QM WMIC is not functioning QM WMC Net ID is the same as another device s Net ID Assign a different Net ID for the QM WMC to match the Net ID specified in the SIMPL Windows program Microphone requires phantom power or cannot use phantom power Enable or disable phantom power as necessary ...

Page 27: ...QM RMCRX peak control until audio is restored For more information refer to the latest revision of the QM RMCRX Operations and Installation Guide Doc 6236 Intermittent microphone output Poor cable connection Verify all cable connections Microphone produces harsh distorted sound Input gain is set too high Lower microphone input gain Hum in microphone audio QM device is improperly grounded Ensure th...

Page 28: ...203 You can also log onto the online help section of the Crestron website www crestron com to ask questions about Crestron products First time users will need to establish a user account to fully benefit from all available features Future Updates As Crestron improves functions adds new features and extends the capabilities of the QM WMIC additional information may be made available as manual updat...

Page 29: ...ps are not covered This warranty extends to products purchased directly from CRESTRON or an authorized CRESTRON dealer Purchasers should inquire of the dealer regarding the nature and extent of the dealer s warranty if any CRESTRON shall not be liable to honor the terms of this warranty if the product has been used in any application other than that for which it was intended or if it has been subj...

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Page 32: ...Crestron Electronics Inc Operations Installation Guide DOC 6245 15 Volvo Drive Rockleigh NJ 07647 12 03 Tel 888 CRESTRON Fax 201 767 7576 Specifications subject to www crestron com change without notice ...

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