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QSC CM16a Hardware Manual

Amplifier network monitor
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CM16a
Amplifier Network Monitor
HARDWARE MANUAL
TD-000086-00
TD-000086-00
Rev. A

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Summary of Contents for QSC CM16a

  • Page 1 CM16a Amplifier Network Monitor HARDWARE MANUAL TD-000086-00 TD-000086-00 Rev. A...
  • Page 2 © Copyright 2000, QSC Audio Products, Inc. QSC® is a registered trademark of QSC Audio Products, Inc., Costa Mesa, CA “QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office “HyperTerminal” is the copyrighted property of Hilgraeve Inc., Monroe, MI “Phoenix Contact”...

  • Page 3: Table Of Contents

    Rear Panel Detailed Illustration & Hookup Example...22 General: Amp Setup, Network Setup...24 LED Behavior...25 BYPASS Switch Usage...25 Serial Port Interface...27 Telnet Access...30 Fuse Replacement...31 ...32 ...36 Ethernet Cable & RS-232 Pinouts ...37 DataPort Pinout and “Phoenix”-type Connector Part Numbers...38 How to Contact QSC Audio Products...39...
  • Page 4 EXPLANATION OF GRAPHICAL SYMBOLS The lightning flash with arrowhead sym- bol, within an equilateral triangle, is in- tended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans.

  • Page 5: Overview

    Ethernet networking technology to communicate with the host computer/system controller. From all of us at QSC Audio Products, thank you for your purchase. The host computer uses the QSControl application software to operate the networked audio system, including the CM16a’s and their amplifiers.

  • Page 6: Physical Characteristics & Layout

    PHYSICAL CHARACTERISTICS Each CM16a is one rack space in height (1RU) and has an internal AC power supply. Its chassis depth is 37.7 cm (14.84 in.). The width of the chassis is 44.0 cm (17.32 in.). For the detailed mounting dimensions, please see specification section. The weight of the CM16a is approximately 5 kilograms (11 pounds).
  • Page 7 Section 1: Introduction- Physical Layout Diagram...

  • Page 8: List Of Functions & Features

    QSC amplifiers. The following two pages (Block Diagram part 1 & 2) graphically illustrate the main functions of the CM16a. Following the diagram is a section giving detailed explanations on each functional block that will aid in the use of the CM16a. Note that not all features may be supported by the current revision level of software (consult software documentation for supported feature set).

  • Page 9: Block Diagram

    Section 1: Introduction- Block Diagram (part 1) The following diagrams illustrate the basic functional blocks of the CM16a. Keep in mind that the first diagram is “duplicated” for each of the eight ports.
  • Page 10 Section 1: Introduction- Block Diagram (part 2)

  • Page 11: Detailed Description Of Functions

    AUDIO MONITOR CHAIN FUNCTIONS Pre-Fader Monitor- Monitors the audio path at the point before the Level Control block (i.e. the input to the CM16a). Post-Fader Monitor- Monitors the audio path at the point after the Level Control, Mute , and Polarity blocks (i.e. the output from the CM16a).
  • Page 12 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.
  • Page 13 This involves connecting a computer with a prop- erly configured serial port to the CM16a using a null- modem type cable (such as a “Laplink” cable) and running a dumb-terminal program (HyperTerminal is the Microsoft®...

  • Page 14: Network Description

    5 due to its increased data rate capabilities. The extra capability may be needed for future system expansion where 100 BASE-T devices are used. 10BASE-T capability is all that is required for the CM16a and thus the call out for Category 3 as the minimum.

  • Page 15: Network Examples

    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 type of cable switches (or crosses over) the transmit and receive sig- nals from one end to the other enabling con- nection without a hub or repeater.
  • Page 16 Section 1: Introduction- Sample Network Topologies 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. To create the more complex distributed star topologies needed for larger systems, use additional hubs.

  • Page 17: Basics: Unpacking

    There are no special unpacking precautions for the CM16a. However, it is recommended that you 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, ensure that the unit is adequately protected for shipment (strong box of appropriate size, sufficient packing material to prevent impact damage or load shifting).

  • Page 18: Connecting: Ac Power

    MOUNTING THE CM16a (continued): The illustration below shows the basic mounting technique. The CM16a uses fan-drawn air for cooling. The air intake is on the left side of the chassis and the exhaust vents are on the front panel. Be certain not to obstruct these openings! Allow ample “open space”...

  • Page 19: Audio Inputs

    (or other unbalanced- to-balanced “converter”) to provide a balanced input to the CM16a. If this is not possible, then it is recommended that the negative terminal and shield terminal be connected to one another with a jumper wire.

  • Page 20: Page Input

    C to NC connection is opened and the C to NO connection is closed. DO NOT CONNECT VOLTAGES EXCEEDING 70 VOLTS (DC or AC rms) TO THE RLY OUT CONNECTOR! DAMAGE TO THE CM16a COULD RESULT OR CREATE HAZARDOUS OPERATING CONDITIONS! REAR PANEL- PAGE, RELAY &...

  • Page 21: Base -T Input/Output

    Insure that both amplifier DataPorts are used and that they are connected to the same CM16a. You do not have to use adjacent ports on the CM16a (i.e. PORT C and PORT D). You can use any two ports for convenience; the only impact of doing this is that the System Manager software control panel will not show all four channels next to each other.

  • Page 22: Rear Panel Detailed Illustration & Hookup Example

    Section 2: Installation- Rear Panel Detail...
  • Page 23 Section 2: Installation- Hookup Example...

  • Page 24: General: Amp Setup, Network Setup

    Preset #1 through Preset #15. The reason for not actively using Preset #0 is as follows: Let’s say you’re operating your system in Preset #12 and you change the setting of one fader. The new setup is NOT the same as Preset #12, so the CM16a starts a 4 minute timer from the time the control was changed.

  • Page 25: Led Behavior

    The first mode is the “Oops, I forgot the computer” or system troubleshooting type of BYPASS. If you are unable to communicate with the CM16a for any reason and you need to bypass the unit, it can be done with the push of a button instead of rewiring the system.
  • Page 26 If sent a corrupted application file, the CM16a will not accept this file. The LED’s might even act in unexpected ways. If this occurs, there is a “backup” file in the CM16a that will enable you to communicate with it.

  • Page 27: Serial Port Interface

    Terminal are used, you will need to follow your software’s instructions for establishing communications through your PC’s COM (serial) port. Connect the RS-232 port of the CM16a to an unused serial port (COM port) of a PC using a null modem type cable. These cables are different than the ordinary serial cable.
  • Page 28 It will require that you name your connection.Enter a name for your new connection (example: CM16a ) and click OK to continue. Next, Hyper Terminal needs to know how to “talk” to the CM16a. This selection depends on which port on your PC the null-modem cable is connected.
  • Page 29 The next screen will look similar to the Hyper Terminal window above. After typing “h” and “Enter”, a text menu will appear. The menu should appear very similar to the example above. This is sent by the CM16a and will detail your options and instructions for changing the address information.

  • Page 30: Telnet Access

    The features outlined for the RS-232 port can also be accessed via the Ethernet network connection. This feature can save a trip out to the remote CM16a with a laptop computer as long as the network and software are fully operable.

  • Page 31: Fuse Replacement

    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 condition of the fuses should be checked.
  • Page 32 Section 4: Specifications- Dimensions Below are shown the dimensions s of interest for the CM16a. These dimensions are helpful for locating the rear-supports for the CM16a when used in portable or touring installations. This drawing is NOT to scale!

  • Page 33: Section 4: Specifications

    Section 4: Specifications Input Signal Processing 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...
  • Page 34 Section 4: Specifications Power amplifier management Power amplifier interface Compatibility QSC Data Port equipped amplifiers Connector and cable HD-15 VGA cable, 2 meters length qualified (for longer runs, contact QSC’s Technical Services Department) Amplifiers Up to eight 2-Ch. amplifiers or four 4-Ch. amplifiers ( or some combination thereof) Amplifier status monitor Clip indicator...
  • Page 35 Section 4: Specifications Network Interface 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 BASE Cable type CAT-3 (or better) twisted pair Max cable length 100 m to hub Grounding Floating RS232 Port...

  • Page 36: Section 5: Architect's & Engineer's Specification

    General—All audio inputs and outputs shall be balanced with a nominal input level of +4 dBu and maximum level of +21 dBu. Input connectors shall be of the “Phoenix” detachable terminal strip type. The Amplifier Network Monitor shall be the QSC CM16a. BASE...

  • Page 37: Ethernet Cable & Rs-232 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.

  • Page 38: Dataport Pinout And "Phoenix"-Type Connector Part Numbers

    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 feature is specific to QSC products and not intended for interface to other manufacturer’s equipment.

  • Page 39: How To Contact Qsc Audio Products

    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 Sales Direct Line Sales & Marketing Technical Services FACSIMILE (FAX) NUMBERS: Sales & Marketing FAX...
  • Page 40 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...

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