QSC CM16a - Manual

Section 1: Introduction- Overview The QSC CM16a Amplifier Network Monitor provides power- ful amplifier management and zone paging capability in a QSControl networked audio system using Ethernet network- ing technology to communicate with the host computer/ system controller. The host computer uses ...

Section 1: Introduction- Physical Characteristics & Layout FRONT PANEL (numbers correspond to reference locations shown in illustration above) 1- POWER switch 2- Cooling air exhaust vents (intake vents are located on left side of chassis as viewed from the front) 3- POWER on indicator 4- DIAGNOS...

Section 1: Introduction- Physical Layout Diagram REAR PANEL (numbers correspond to reference locations shown above) 1- DataPort connectors PORT A - PORT H 2- PORT A CH 1 - PORT H CH 16 three-pin receptacles for audio inputs 3- PAGE three-pin receptacle for paging audio signal input 4- MONITOR CHAIN ...

Section 1: Introduction- List of Functions & Features FUNCTIONAL LISTING, BLOCK DIAGRAM & DETAILED DESCRIPTIONS The CM16a performs remote control and monitoring of amplifiers. Below is a listing of the functions available for the supported QSC amplifiers. The following two pages (Block Diagr...

Section 1: Introduction- Detailed Description of Functions AUDIO FUNCTIONS Audio Inputs - These are the 3-pin terminal block connectors used for balanced line level audio-signal input. This type of connector is sometimes called“Phoenix”or “Euro” style. Input Sensitivity- Sets the sensitivity of the ...

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 ...

Section 1: Introduction- Detailed Description of Functions RS-232 PORT FUNCTIONS RS-232 Port- The RS-232 (serial) port is used to communicate with the CM16a for Ethernet address setup and other diagnostic purposes. Most users will never have a need to access the RS232 port, but for customized networ...

Section 1: Introduction- Network Description 14 QSC CM16a Amplifier Network Monitors are designed to operate on standard 10 BASE -T Ethernet. Each CM16a operates as a respective node on its network; each unit contains a programmable IP address in nonvolatile memory. To minimize network conflicts, ea...

Section 1: Introduction- Sample Network Topologies The simplest network configuration is a single system controller computer and a CM16a con- nected by a single Ethernet crossover cable. A standard Ethernet cable would NOT work. The crossover-type cable must be used when con- necting the CM16a direc...

Section 2: Installation- Basics and Mounting UNPACKING There are no special unpacking precautions for the CM16a. Keep the original packing material for reuse in the rare event that service be required on the CM16a. If service is required and the original packing material is not available, adequately...

Section 2: Installation- Mounting and AC Power CONNECTING AC POWER The CM16a uses a detachable IEC standard power cord for connecting to a grounded AC source. To connect power to the CM16a: identify the proper end of the cord, match the orientation of the receptacle on the rear panel and insert firm...

Section 2: Installation- Connections CONNECTING AUDIO INPUTS The audio inputs are located on the rear panel. The CM16a uses terminal block connectors for the audio inputs. They are s o m e t i m e s c a l l e d “ P h o e n i x ” o r “Euro”connectors. These connectors al- low the installer to pre-wir...

Section 2: Installation- Connections REAR PANEL- PAGE, RELAY & MONITOR CONNECTIONS 20 CONNECTING THE RLY OUT The RLY OUT connector provides access to the internal relay’s contacts for remotely controlling an external low voltage device or circuit. This internal relay is rated for 70V (DC or ACrm...

CONNECTING TO THE RS-232 PORT Connection is made with a null-modem serial cable with a DB-9 male plug to the CM16a. The RS-232 port can be used for setting various operational parameters that are CRITICAL to proper operation of the CM16a. The network address settings can be changed through this port...

23 Section 3: Operation- LED Indicators LED Indicators- When the power is switched “on”, all of the LED’s light briefly and then the PORT LED’s sequence through two patterns. The LED’s then resume normal operation. The LED functions are described below. This indicator illuminates when the CM16a powe...

NETWORK- The network should be operable and QSControl software should be installed/running on the system controller computer. 24 AMPLIFIER SETUP- The amplifiers connected to the CM16a must have their power switches in the “on” position. For initial testing, it is advisable that the amplifiers be set...

25 Section 3: Operation- Recalling Presets Using RLY/TRG IN There are three operating modes for recalling presets using the RLY/TRG IN of the CM16a and a set of external contacts (switch, relay or other such device). These modes are set up and accessed using the QSControl software or RS232/Telnet se...

26 Section 3: Operation- Bypass Modes and Switch Location BYPASS MODE #2 (SAFE MODE): Use if the CM16a becomes inoperable (or behaves in completely unexpected ways) after uploading a new application file (TFTP file transfer). If the CM16a operates in an unexpected way or is not responding to any com...

The RS-232 connector on the rear panel is used as a serial port input/output (I/O). This I/O port is used for accessing Ethernet/IP settings, stand alone control capabilities, system “health” data, firmware version information and other related data. This interface is not used by the majority of use...

29 Section 3: Operation- Serial Port I/O Interface 6) The Hyper Terminal main window will appear next, but blank. Type the letter “h” (for help) and then the “Enter” key. This will prompt the CM16a to post its menu text. The “h” key is the Help prompt for the CM16a. 7) The next screen will look simi...

30 Section 3: Operation- Telnet Access The RS-232 features can be accessed via the network. The Microsoft Telnet application is a Windows program. Consult Windows documentation for Telnet information . This is the basic procedure for opening a Telnet session: 1 - To open the Telnet sesion- Click STA...

31 FUSE REPLACEMENT If the CM16a does not power-up when the POWER switch is in the “on” position ( POWER indicator LED does not illuminate) check the source of AC power and the connection of the power cord at the outlet and IEC receptacle ends. If the AC source is “on” and the power cord is connecte...

32 Section 4: Specifications- Dimensions SIDE FRONT TOP

33 Section 4: Specifications Frequency response 20 Hz–20 kHz ±0.5 dB10 Hz–80 kHz ±3 dB Distortion <0.01% THD+N @ +4 dBu out(page input <0.03%) Dynamic range >110 dB unweighted20 Hz–20 kHz(page input >100 dB) Polarity In-phase or inverted Level control range -95.5 to 0 dB in 0.5 dB steps ...

SECTION 5 : ARCHITECT’S AND ENGINEER’S SPECIFICATIONS The Amplifier Network Monitor shall provide input, output, and status control for DataPort equipped QSC power amplifiers in an Ethernet-TCP/IP based network audio system. Sixteen indepen- dent channels shall be provided, grouped in pairs. Amplifi...

37 Section 6: Appendix- Ethernet Cable Pinouts A crossover cable has the RX and TX wire pairs switched around at one end. There are only two likely situations that would require a crossover cable: to connect a single system controller computer directly to a single CM16a device; and to cascade hubs t...

38 Section 6: Appendix- DataPort Pin-out & Connector P-N’s DATA PORT PINOUT: The diagram to the right shows the pin assignments used for the HD-15 connectors on the CM16a and amplifier. NOTE! This information is shown for reference only and is subject to change without notice as the DataPort fea...

39 Section 7: How to Contact QSC Audio Products ADDRESS: QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, CA 92626-1468 USA TELEPHONE NUMBERS: Main Number (714) 754-6175 Sales Direct Line (714) 957-7100 Sales & Marketing (800) 854-4079 toll free in U.S.A. only Technical Services (71...