Qsc - Cm16A Amplifier Network Monitor 电路图.pdf

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1、N E T W O R K A U D I O S Y S T E M S The CM16a Amplifier Network Monitor is a key hardware component of QSControl,QSCs Ethernet based audio network.The CM16a provides sixteen channels of gain control,monitoring,and amplifier management for DataPort-equipped QSC amplifiers.The CM16a is operated remo

2、tely by a Pentium-based PC or QSC System Controller running QSControl application software.Control and monitoring data is communicated between the Pentium-based PC or QSC System Controller and CM16a via an Ethernet network.The CM16a,located in the amplifier rack,is linked to each amplifier via a Dat

3、aPort. CM16a P r e l i m i n a r y S p e c i f i c a t i o n s Amplifier Network Monitor Front View Rear View 1675 MacArthur Boulevard Costa Mesa, CA 92626 Ph: 800/854-4079 or 714/957-7100 Fax: 714/754-6174 Web: Email: Hear the Power of Technology. CM16a Input / Output Control 60 Threshold is adjust

4、able in software OUTPUT VOLTAGE METER:Range automatically matches to amplifier model used OUTPUT CURRENT METER:Range automatically matches to amplifier model used *Signal level must be higher than -32 dB,referenced to maximum output of amplifier POWER AMPLIFIER MANAGEMENT POWER AMPLIFIER INTERFACE:

5、Compatibility QSC Data Port equipped amps Connector and cable HD-15 VGA cable,2 meters length qualified (for longer runs, contact QSCs Technical Services Department AMPLIFIERS:Up to eight 2-channel amplifiers or four 4-channel amplifiers (or some combination thereof) AC POWER CONTROL: AC mode contro

6、l Switches amplifier between normal and standby mode AC power indicatorIndicates operate,standby,or power-down mode AMPLIFIER STATUS MONITOR: Clip indicator Senses channel clip status Protect indicator Senses amplifier protect status Temperature meter Reports amplifier operating temperature (above 5

7、0C) Over-temp.alertSoftware adjustable threshold CONTROL ROOM FOLDBACK MONITORING NUMBER OF SIGNAL MONITORING BUSES PER CM16a:1 NUMBER OF CHANNELS PER CM16a:4 INTERNAL SIGNAL MONITOR POINTS (EACH WITH AN ATTENUATOR): Pre-fader input signal 16 Post-fader input signal 16 Power amplifier output 16 MONI

8、TOR INPUT:Mixed with tap point signal at unity gain Nominal level +4 dBu Maximum level +21 dBu Input impedance 10kbalanced Configuration Active balanced,shield connected to chassis Common-mode rejection Worst case,54 dB at 20 Hz rolling off to 40 dB at 20 kHz Typical case,50 dB 20 Hz-20 kHz OUTPUT:S

9、um of monitor input and signals from internal monitor tap point Frequency response:20 Hz20 kHz 0.5 dB Distortion: 90.5 dB unweighted,22 Hz22 kHz Noise floor:-90.5 dB Nominal level:+4 dBu Maximum level:+21 dBu Output impedance:75balanced Output load:600min Configuration:Active balanced LEVEL:Adjusts

10、amplitude of signal from tap point Monitor in to monitor out 0 dB, 1 dB Control range -95.5 to 0 dB in .5 dB steps INTERNAL DIGITAL TO ANALOG CONVERTER (DAC) Internally generated test signals or pre-stored .WAV files can be routed to any/all inputs. This preempts the paging input. .WAV files are net

11、work downloadable and can be stored to CM16a internal memory. CONTACT CLOSURE INPUTS AND OUTPUTS INPUTS:1 discrete input Configuration Single-ended input. Resistance for closure detect 5kmin Input voltage limit7.000 VDC maximum Ground limits Potential to case:3V maximum (“-”input terminal)Resistance

12、 to case:100 OUTPUT:1 discrete output Configuration Electromechanical relay,dry contacts, floating,C,NC,NO Maximum steady-state current 0.5A Maximum switched current 0.25A Ground isolation 70V maximum CONNECTOR:“Phoenix-style”(a.k.a.“Euro-style”) detachable terminal block connectors NETWORK INTERFAC

13、E PHYSICAL NETWORK:Ethernet Raw data rate 10 megabits per second Frame format D.I.X.(Ethernet) Connector RJ-45 female Ethernet type10BASE-T:(via RJ-45) Cable type 10BASE-T:CAT-3 (or better) twisted pair Max cable length10BASE-T:100 m to hub Grounding Floating TRANSPORT NETWORK:TCP/IP Internetwork pr

14、otocol IP Transport protocol UDP APPLICATION PROTOCOL:QSC24 Version1 Revision7 RS-232 PORT CABLE TYPENull-Modem (a.k.a.Laplink) PORT SETTINGSBits per Second9600 Data Bits8 Paritynone Stop Bits1 Flow ControlXon/Xoff GENERAL PHYSICAL Height:1.72”(1RU) Width:19”(standard rack mount) Depth:14.84”(37.7 c

15、m),including rear supports Weight11 lbs.(5 kg) Mounting:Rear support recommended for portable or mobile use Operating Temp.:0 to 50C AC POWER: Voltage 100-240 VAC (Universal Supply) Current 1A RMS 120V,1.1A RMS 100V, 0.5A RMS 230V Frequency 47440 Hz Specifications subject to change ARCHITECTS AND EN

16、GINEERS SPECIFICATIONS The CM16a Amplifier Network Monitor shall provide input,output,and status control for Data Port equipped QSC power amplifiers in an Ethernet-TCP/IP based network audio system. Sixteen independent channels shall be provided, grouped in pairs to support up to sixteen power ampli

17、fier channels. Amplifier Input Control and Monitoring. For each of the sixteen power amplifier input signals,the CM16a shall provide gain,mute and polarity control,pre- and post-fade signal level meteringand audio monitoring,and selectable +4 dBu/-10 dBV (3V/1V) input sensitivity. The CM16a shall pr

18、ovide a page input,separate from the normal program inputs,whose signal may preempt the program signal of any or all of the sixteen program channels.This input shall have selectable +4 dBu/-10 dBV (3V/1V) sensitivity. The CM16a shall provide an internal Digital to Analog converter circuit. Such circ

19、uit shall be used for generating test signals and for playback of pre-recorded .WAV files. These .WAV files shall be network downloadable and storable in the CM16as on-board memory. As with the page input,this DAC circuit may preempt any or all of the sixteen program channels. The CM16a shall provid

20、e for the storage and recall of up to sixteen different presets,numbered 0 through 15. Each preset shall be a snapshot of all of the CM16a functions and settings. Preset #0 shall be the default boot-up preset. Amplifier Output Monitoring. For each of the sixteen power amplifier outputs, the CM16a sh

21、all provide clip detect monitoring, short/open circuit detect, voltage and current metering, amplifierheadroom,load impedance,real output power to load,and audio monitoring of the voltage signal. Amplifier Management.For each of the eight dual-channel power amplifiers,the CM16a shall provide AC stan

22、dby/operate mode control,AC power state indication,temperature metering, amp gain settings (front panel knob position with respect to full output), over-temperature detection,stereo/parallel/bridge-mono indication,amplifier model detection,and protect status detection (subject to the capabilities of

23、 each amplifier). Audio Monitoring Chain.For each of the sixteen program channels,the CM16a shall provide three monitor points as follows:(1) pre fader gain control,(2) post fader gain control,or (3) post power amplifier output.A channels monitor output may be selected from one of these three signal

24、s,or it may be switched off.The signal at the CM16as monitor output connector shall be the sum of the signal at its monitor input connector and as many as four of the sixteen chan- nel monitor signals at one time per CM16a.A monitor gain control shall be provided for each monitor tap point to adjust

25、 the individual levels of the channel monitor signals prior to their being mixed with the monitor input signal. Contact Closure I/O.The CM16a shall provide one trigger contact-closure sense input which shall also be TTL signal compatible, and one dry-contact floating SPDT relay output. These shall b

26、e under software control,with functions definable by the QSControl custom software application. Data Network.All CM16a functions shall be controlled and monitored via an Ethernet digital control network using the TCP/IP transport protocol and the QSC24 control and monitoring application protocol.Rea

27、r-panel connections shall be provided for 10BASE-T Ethernet utilizing a standard RJ45 Unshielded Twisted Pair Category-5 connection. Other than the AC power switch,the CM16a shall have no manual controls. A 9-pin,D subminiature connector shall be provided to allow interfacing to an RS-232 connection

28、. This connector shall be used for firmware upgrades as well as device testing and diagnosis via a computers COM port. Amplifier Interface.The CM16as interface to each power amplifier Data Port shall be via a miniature HD-15 connector.The amplifier interface shall use a standard personal computer Vi

29、deo Graphics Adapter (VGA) CRT monitor cable.This interface shall transmit two amplifier input audio signals as well as all control and monitoring signals.Special signal conditioning and grounding techniques shall be used in this interface to ensure negligible levels of noise and crosstalk. 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 Euro-style depluggable barrier strip type.