QSC Audio CM16a manual

CM16a Amplifier Network Monitor HARDW ARE MANUAL *TD-000086-00* TD-000086-00 Rev . B[...]

¨ WARNING ¨ While QSC has endeavored to develop and produce the most depend- able and robust ‘network’ audio product for your use, due to the myriad of network situations and equipment that may be encountered in its implementation, QSC cannot be held responsible for network conflicts and associated consequences that may result. For this reaso[...]

T ABLE OF CONTENTS: CM16a Amplifier Network Monitor Section 1: INTRODUCTION Overview ...................................................................................................5 Physical Characteristics & Layout........................................................6 List of Functions & Features.....................................[...]

CAUTION: To reduce the risk of electric shock, do not remove the cover. No user-serviceable parts inside. Refer servicing to qualified service personnel. WARNING: To prevent fire or electric shock, do not expose this equip- ment to rain or moisture. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN SAFEGUARDS Electrical energy can perform many useful func[...]

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 the QSControl application software to operate the [...]

Section 1: Introduction- Physical Characteristics & Layout FRONT P ANEL (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- DIAGNOSTIC indicator 5- RCV , XMT and LINK STATUS networ[...]

Section 1: Introduction- Physical Layout Diagram REAR P ANEL (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 , IN and OUT five-pin receptacle for audio monito[...]

Section 1: Introduction- List of Functions & Features FUNCTIONAL LISTING, BLOCK DIAGRAM & DET AILED 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 Diagram part 1 & 2) illustrate the main functions [...]

Section 1: Introduction- Block Diagram (part 1) 9[...]

Section 1: Introduction- Block Diagram (part 2) 10[...]

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 Audio Inputs to either 1 Volt or 3 Volts ([...]

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 bridg[...]

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 networks and for troubleshooting system problems, it may[...]

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, each IP address should be unique. When shipped from [...]

Section 1: Introduction- Sample Network T opologies 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 directly to the system con- troller computer. This typ[...]

Section 1: Introduction- Sample Network T opologies Some networks have multiple system con- troller computers. This configuration is es- sentially the same as the second example with the addition of the second computer attached to the hub or switch. To create the more complex distributed star topologies needed for larger systems, use additional hub[...]

Section 2: Installation- Basics and Mounting UNP ACKING 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 protect for shipment (strong box of appropriate [...]

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 firmly into the receptacle. The power supply will acce[...]

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 sometimes called “Phoenix” or “Euro”connectors. These connectors al- low the installer to pre-wire the input ter- minations before the CM16a is installed in the [...]

Section 2: Installation- Connections REAR PANEL- PAGE, RELAY & MONITOR CONNECTIONS 20 CONNECTING THE RL Y 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 ACrms), 250 mA (switched) and is isolated from grou[...]

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. Do Not Change the Network Address unless you are[...]

Section 2: Installation- Rear Panel Detail 22[...]

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 power switch is in the “on” position. Th[...]

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 for the lowest useful gain (volume) setting u[...]

25 Section 3: Operation- Recalling Presets Using RL Y/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 sessions. The purpose of this portion of the manual[...]

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 communications after a new application file is upload[...]

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 users. But should any system problems arise, the [...]

28 Section 3: Operation- Serial Port I/O Interface 5) The Properties window for the selected COM port should now be active. It should be similar in appearance as the example to the right. For the Port Settings, use the following information so communica- tion between the CM16a and the computer is in the same “language”. Bits per Second 9600 Dat[...]

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 similar to the Hyper Terminal window above[...]

30 Section 3: Operation- T elnet 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 START, select RUN, type Telnet followed by a space, [...]

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 connected and in good condition, then the conditio[...]

32 Section 4: Specifications- Dimensions SIDE FRONT TOP[...]

33 Section 4: Specifications Frequency response 20 Hz–20 kHz ±0.5 dB 10 Hz–80 kHz ±3 dB Distortion <0.01% THD+N @ +4 dBu out (page input <0.03%) Dynamic range >110 dB unweighted 20 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 Precision attenuator better than 112 d[...]

34 Power amplifier management Signal monitoring buses 1 (per CM16) Number of Channels 4 Internal signal tap points Pre-fader input signal 16 Post-fader input signal 16 Power amplifier output 16 Monitor input Mixed with tap point signal at unity gain Nominal level +4 dBu Maximum level +21 dBu Input impedance 10 kOhm balanced Configuration Electronic[...]

35 Physical network Ethernet, IEEE 802.3 compliant Raw data rate 10 megabits per second Frame format D.I.X. (Ethernet) Connector RJ-45 female Ethernet type 10 BASE -T Cable type CAT-3 (or better) twisted pair Max cable length 100 m to hub Grounding Floating Factory IP Address Supplied on front-panel sticker as shipped from factory General Transport[...]

SECTION 5 : ARCHITECT ’ S AND ENGINEER ’ S SPECIFICA TIONS 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. Amplifier Input Control and Monitoring —For ea[...]

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 that don’t have uplink ports. ETHERNET CABLING Th[...]

38 Section 6: Appendix- DataPort Pin-out & Connector P-N ’ s DA T A 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 feature is specific to QSC products and not i[...]

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 (714) 957-7150 (800) 772-2834 toll free in U.S.A. onl[...]

1675 MacArthur Boulevard Costa Mesa, California 92626 USA PH: (714) 754-6175 FAX: (714) 754-6174 “ QSC ” and the QSC logo are registered with the U.S. Patent and Trademark Office[...]