QSC Audio CM16a Introduction- Detailed Description of Functions, Amplifier Monitoring Functions

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Section 1: Introduction- Detailed Description of Functions

AMPLIFIER MONITORING FUNCTIONS

Amplifier Model Detect- Identifies what model of QSC amplifier is connected to the CM16a’s DataPort.

Amplifier Gain Detect- Reports the setting of the amplifier’s gain setting (in dB) for each channel.

Bridge Mode Detect- Detects the position of the bridge mode switch on each amplifier.

Clip Detect- Detects amplifier clipping on each chan-

nel.

Headroom Metering- Reports the “available” re- maining signal level that the input signal can be driven before clipping will occur.

Heat Sink Temperature Metering- Monitors the heatsink temperature of each channel of each amplifier connected to the CM16a. If the temperature exceeds a user specified value (in software) then the Over-Temp. “object” will alert the system operator.

Load Monitor Detect- Monitors the impedance of the load at the amplifier output for each channel.

Output Current Meter- Provides for metering of the amplifier’s output current on each channel.

Output Voltage Meter- Provides for metering of the amplifier’s output voltage on each channel.

Output Open Detect- Detects when the load con- nected to the amplifier is above a user specified value in software.

Output Short Detect- Detects when the amplifier load is below a user specified value in software.

Power Status Detect- Reports AC power status of the amplifier (ON/standby/ OFF).

Protect Status Detect- Reports if the amplifier has entered “protect” mode (such as thermal, over-current or power-up muting protect status).

Real Power Detect- Reports the “real” power the amplifier is delivering. This “real” power is not the same as “reactive” power. Real power is the product of current and voltage times the cosine of the phase angle between them.

Threshold Adjust- This indicates that the behavior of the associated block requires the input of a threshold value in software that must be crossed for the detection to occur. This allows the system operator to tailor the behavior of the system to each application.

PAGING FUNCTIONS

Input Sensitivity- Sets the sensitivity of the Page Input to either 1 Vrms or 3 Vrms. This selection should coincide with the level of the audio signal provided for the Page Input.

DAC- This is a digital-to-analog converter that takes digital information from the internal microcontroller and outputs the corresponding analog “equivalent” to the appropriate channel PAGE insert points . This oc- curs only by instructions issued by the system operator or a custom control application.

Page Input- This is a 3-pin terminal block connector used for balanced line level page audio-signal input.

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Contents CM16a Amplifier Network Monitor ¨ Warning ¨ Table of Contents CM16a Amplifier Network Monitor Federal Communications Commission FCC Information Introduction- Overview Series are not supported by the CM16aIntroduction- Physical Characteristics & Layout Physical CharacteristicsIntroduction- Physical Layout Diagram RS-232 port for network and firmware utilitiesIntroduction- List of Functions & Features Functional LISTING, Block Diagram & Detailed DescriptionsIntroduction- Block Diagram part Introduction- Block Diagram part Introduction- Detailed Description of Functions Introduction- Detailed Description of Functions Amplifier Monitoring FunctionsRS-232 Port Functions Introduction- Network Description Introduction- Sample Network Topologies Introduction- Sample Network Topologies Installation- Basics and Mounting What is Included in the CartonUnpacking Location ConsiderationsInstallation- Mounting and AC Power Connecting AC PowerInstallation- Connections Connecting Audio InputsConnecting page Input Connecting the RLY/TRGConnecting the RLY OUT Connecting the Monitor Chain IN/OUTConnecting to the RS-232 Port Connecting to 2-CHANNEL AmplifiersConnecting to 4-CHANNEL Amplifiers Installation- Rear Panel Detail Operation- LED Indicators Port Connected LED’sOperation- General Information & Presets START-UP Behavior and Preset OperatingOperation- Recalling Presets Using RLY/TRG Most up-to-date informationOperation- Bypass Modes and Switch Location HOW to put the CM16a into Bypass Mode #1HOW to put the CM16a into Bypass Mode #2 RS-232 Communications Procedure Operation- Serial Port I/O InterfaceXon/Xoff IP Address Assignment Only Required for Attaching to Existing NetworksOperation- Telnet Access This is the basic procedure for opening a Telnet sessionOperation- Fuse Replacement Fuse ReplacementSpecifications- Dimensions Specifications Input Signal ProcessingPower amplifier output processing Power amplifier management Control room foldback monitoringContact closure inputs and outputs RS232 Port GeneralARCHITECT’S and ENGINEER’S Specifications Appendix- Ethernet Cable Pinouts Ethernet CablingAppendix- DataPort Pin-out & Connector P-N’s Pin Signal DescriptionRS-232 Pinout How to Contact QSC Audio Products
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CM16a specifications

The QSC Audio CM16a is a versatile and powerful amplifier designed to meet the demands of professional audio applications. Known for its reliability and performance, the CM16a is ideal for both live sound and installation scenarios, offering a perfect blend of advanced technology and user-friendly features.

One of the standout features of the CM16a is its Class D amplifier architecture. This technology ensures not only high efficiency but also a lightweight design, making it easier to transport and install in various settings. The amplifier delivers an impressive output power of 1600 watts at 4 ohms, providing ample headroom for demanding audio applications. The CM16a is capable of handling multiple speaker configurations, making it a flexible choice for various setups.

Another key characteristic of the QSC CM16a is its advanced thermal management system. This built-in feature ensures the amplifier operates within safe temperature limits, enhancing reliability and extending the lifespan of the unit. The CM16a also includes an intelligent protection circuit that safeguards the amplifier from overload and short circuits, allowing users to operate it confidently even during intense performances.

The CM16a comes equipped with multiple inputs and outputs, including XLR and TRS connectors, enabling seamless integration with a range of audio sources and systems. This versatility allows for easy connection to mixers, microphones, and instruments, making it suitable for diverse applications from concerts to corporate events.

In addition to its robust performance, the QSC CM16a features an intuitive front panel design with LED indicators for quick monitoring of system status and performance. Users can easily adjust levels and settings, ensuring optimal audio quality for any given situation.

The amplifier is also designed with efficiency in mind, incorporating Power Factor Correction (PFC) technology. This enhances power usage, reducing operational costs while minimizing environmental impact.

In conclusion, the QSC Audio CM16a stands out as a premier choice for audio professionals seeking a reliable, high-performance amplifier that can deliver exceptional sound quality. With its Class D technology, advanced protection features, versatile connectivity, and user-friendly design, the CM16a is a worthy investment for any audio application. Whether for live sound reinforcement or permanent installations, the CM16a promises to meet the needs of even the most demanding audio environments.
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