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IQ-PIP-USP3/CN

page 28

Reference Manual

5 Audio Signal Wiring and Network Basics

This section provides additional information about audio signal wiring and TCP/IQ Network
basics. For more information about any of these topics, contact Crown Technical Support.

5.1 A Closer Look at Audio Signal Wiring

Balanced audio inputs are connected to the IQ-PIP-USP3/CN through a 5-pin removable
barrier block. The audio cables should be wired in the following manner (See Figure 5.1)

If possible, the use of balanced wiring is strongly recommended. Some important guide-
lines follow.

• Always use shielded wire. The higher the density of the shield (the outer conductor) the
better. Spiral wrapped shield is not recommended.
• When using unbalanced lines keep the cables as short as possible. Avoid lengths greater
than 10 feet (3 meters).
• Do not run the audio input cables together with the high-level wiring such as loud-
speaker wires or AC cords. (This lessens the chance of hum and noise being induced into
the input cables.)
• Turn the entire sound system off before changing any connections. Turn the level con-
trols down before powering the system back up. Crown is not liable for damage incurred
when any transducer or component is overdriven.

DO NOT USE THE CHANNEL 2 INPUT if the amplifier is used in either Bridge-Mono or
Parallel-Mono mode.

For additional information on audio input wiring please refer to the Crown

Amplifier Appli-

cation Guide

available online at www.crownaudio.com. It contains helpful information on

preventing unwanted subsonic frequencies, radio frequency interference, ground loops,
and feedback oscillation.

Figure 5.1 Input Wiring for the IQ-PIP-USP3/CN

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Содержание IQ-PIP-USP3

Страница 1: ...manual was deemed accurate as of the publication date However updates to this information may have occurred To obtain the latest version of this manual please visit the Crown website at www crownaudio com Trademark Notice Crown Amcron Com Tech Macro Tech IQ and IQ System are reg istered trademarks of Crown International SmartAmp IQ2 PIP and PIP2 are trademarks of Crown International Other trademar...

Страница 2: ...te radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or televi sion reception which can be determined by turning the equipment off and on the user is...

Страница 3: ... 20 pin cable A should connect to the con nector closest to the corner and the 18 pin cable B should connect to the other connector Important Be careful when attaching the ribbon cable to the connector Applying pressure to an improperly seated connector could cause the keying tabs which ensure proper pin alignment to break Connecting the ribbon cables with improper pin alignment will likely result...

Страница 4: ...alanced Audio Inputs 15 4 1 7 Aux Input Output Connector 16 4 1 8 Preset Reset Switch 17 4 2 Amplifier Control and Monitoring 17 4 2 1 User Presets 17 4 2 2 Clip Event Monitor 17 4 2 3 Input Signal Level Monitor 18 4 2 4 Output Signal Level Monitor 18 4 2 5 Thermal Headroom Level Monitor 18 4 2 6 Power Standby Control 18 4 2 7 Signal Mute 18 4 2 8 Polarity Inverter 18 4 2 9 Input Signal Fader 18 4...

Страница 5: ...Signal Wiring 28 5 2 TCP IQ Network Basics 29 5 3 A Closer Look at CobraNet 32 5 3 1 Fast Ethernet 32 5 3 2 Audio Specs 33 5 3 3 The Conductor 33 5 3 4 Bundles and Audio Channels 34 5 3 5 Repeater Networks 34 5 3 6 Switched Networks 35 6 Advanced Features and Options 36 6 1 Using the AUX Connector 36 6 1 1 AUX Output 36 6 1 2 AUX Input 38 6 2 Load Supervision Applications 38 6 2 1 Typical Load Cha...

Страница 6: ...gnal Flow Block Diagram 14 4 2 Input Routing Screen 14 5 1 Input Wiring for the IQ PIP USP3 CN 28 5 2 A TCP IQ Network 29 5 3 Multiple Network Communication Via an IP Router 31 5 4 Star Network Topoogy 32 5 5 Multi Star Topology 33 6 1 AUX Output Control of a Relay 36 6 2 AUX Out Use to Switch In a Redundant Amplifier On Fault 37 6 3 Wiring a Remote Preset Selector 37 ...

Страница 7: ...ide noise masking and test capabilities The enhanced AUX port capability allows the user to interface with the amplifier to provide external manual control and monitoring 1 1 Unpacking The unit is shipped in a protective antistatic bag CAUTION STATIC ELECTRICITY MAY DAMAGE THE UNIT Use caution when handling the unit Carefully ground your self BEFORE touching the unit Avoided unnecessary touching t...

Страница 8: ... setup or operation that might occur under every condition For additional information please con sult Crown Tech Support your system installer or retailer We strongly recommend that you read all instructions warnings and cautions contained in this manual Also for your protection please send in your warranty registration card today or register online at www crownaudio com And save your bill of sale...

Страница 9: ... PIP USP3 CN receives a valid TCP IQ command that is addressed to the IQ PIP USP3 CN See Section 4 1 1 D Fan Vent E Mounting Holes F Balanced Audio Input Connector Single 5 pin removable barrier strip connector for both channels G AUX Connector Configurable for AUX input or AUX output Listen Bus is available through CobraNet H I Network Connectors The dual RJ45 CobraNet connectors allow a Primary ...

Страница 10: ...r in a MA3600 due to the amount of power required 3 1 Prepare the IQ PIP USP3 CN The IQ PIP USP3 CN comes ready to install in the amplifier This unit does not require setting the IQ address as the older current loop Crown bus units did Each IQ PIP USP3 CN as well as all TCP IQ components come preprogrammed with a unique network MAC address The IQ address is then set automatically or manually via t...

Страница 11: ... connect to the other connector Important Be careful when attaching the ribbon cable to the connector Applying pressure to an improperly seated connector could cause the keying tabs which ensure proper pin alignment to break Connecting the ribbon cables with improper pin alignment will likely result in damage to the PIP module 3 Set amplifier sensitivity Mount the PIP module in the amplifier 1 Wit...

Страница 12: ... using IQWic software 2 Connect the auxiliary audio input wiring The USP3 CN allows the use of standard bal anced audio inputs to act either as CobraNet backup an emergency override of CobraNet audio or as an audio input to the CobraNet network See Section 4 1 6 for additional details The single 5pin removable barrier block connector allows both audio channels to be inserted into the USP3 CN then ...

Страница 13: ...ng and addressing In addition to TCP IQ series components the TCP IQ network solution allows connection to legacy IQ2 components via traditional IQ loop communications as well as interface to 3rd party controller support such as AMX and Crestron The USP3 CN can function independently from the network control Once the processing is setup the module s non volatile memory allows the amplifier to cont...

Страница 14: ...te that there are two pairs of source selectors each allows selection of 1 2 or the sum of both for both Analog and CobraNet Inputs What goes into each of the input channel paths is one of a selection of four possible input configurations of the channel pair Figure 4 1 Signal Flow Block Diagram Figure 4 2 Input Routing Screen ...

Страница 15: ...ork If the Primary connection fails due to cut wire failed network switch etc this port is automatically enabled and ready to receive the CobraNet network data witin a few seconds Connection is made using standard CAT5 cable to a network switch port Crown strongly recommends the use of switches and not hubs in the implementation of the CobraNet network Use of hubs will limit the amount of CobraNet...

Страница 16: ...tivate the AUX output when the error conditions are met Flash preset mode The AUX output can be configured to flash the preset number like the front panel indicator An inversion control allows the AUX output functionally to be inverted for the manual and error reporting modes The inversion control is ignored for flash preset mode The AUX input is a two state input with a high state defined as volt...

Страница 17: ...tore the unit to factory default settings Remove all audio input signals Hold the Reset Preset switch in for two flashes of the Data light longer than 2 seconds The Data indicator will flash rapidly for a moment Restore the audio input signals To restore the unit including presets to factory default settings Remove all audio input signals Hold the Reset Preset switch while applying power to the un...

Страница 18: ...lifier cannot produce any more power and it will begin to protect the output devices by limiting their drive level The thermal limiter feature of the IQ PIP USP3 CN can be set to engage at a pre selected thermal level See Section 4 2 17 4 2 6 Power Standby Control Each channel can be independently turned on and off 4 2 7 Signal Mute The output signal of each channel can be independently muted This...

Страница 19: ...ser and Channel Labels The IQ PIP USP3 CN can store two user labels and two channel labels These labels are 30 character strings that can be set by the user to indicate the function of the amplifier and its channels 4 2 14 Amplifier Mode The host amplifier s mode status Stereo Dual Bridge Mono or Parallel Mono can be sent to the IQ PIP USP3 CN with this control IQ software then becomes aware of th...

Страница 20: ... provide a fault signal to the IQ PIP USP3 CN if it detects some catastrophic amplifier failure LOAD If the load monitoring feature is activated an error report can be generated if the load impedance falls outside the pre selected range See Section 4 2 29 for instructions on setting up load monitoring LINE VOLTAGE On the CTs series of amplifiers the AC line voltage can be monitored and an error ge...

Страница 21: ...ease The range is from 0 seconds to 10 seconds Compression Ratio Sets the compression ratio of the compressor The ratio is the rela tion between the amount of attenuation applied by the compressor verses the amount that the input signal is over the threshold The available settings are 2 1 to 32 1 Beyond the three controls for each channel a single control Compressor Tie connects the compressors to...

Страница 22: ...frequency tone 19kHz into the signal in paging type system to continually drive the speaker allowing continuous monitoring of the speaker load The following controls exist Sine On Off The sinewave signal generator s function Sine Frequency Controllable from 20Hz to 20KHz Sine Level Each channel s sinewave signal level can be independently controlled 4 2 24 Peak Voltage Limiter This limits the peak...

Страница 23: ...nnel Enable Enables or disables this limiter Threshold Sets the thermal level in percent above which the limiting will begin The range is from 1 to 100 Attenuation Sets the amount in dB that will be attenuated for each percentage point that the thermal level exceeds the threshold The range is from 0 5 dB to 6 dB in 0 5 dB steps 4 2 28 Limiter Tie This control forces both channels to track by using...

Страница 24: ...a licensed technology developed by Peak Audio Inc consisting of proprietary communications protocol firmware and hardware It allows reliable deterministic transmis sion of digital audio over a 100Base T Fast Ethernet network The IQ PIP USP3 CN oper ates as a networked device on a CobraNet network and interfaces digital audio from the network to the amplifer Refer to Section 5 3 for a more thorough...

Страница 25: ...tory and is read only The intended use is to commu nicate a unique device description to a network System Location This parameter is user settable to any alpha numeric string of 30 characters or less The intended use is to communicate a unique description of the device location to a network This object is stored in presets System Contact This parameter is user settable to any alpha numeric string ...

Страница 26: ...raNet Bundles TxA TxB TxC TxD Each Transmit Bundle includes the following controls and monitor functions Receiver Count This meter reports the number of CobraNet nodes actively receiving the Bundle being sourced to the network by this bundle Transmit Position This meter reports the transmitter s relative position as assigned by th e CobraNet Conductor Lower numbers are transmitted before higher nu...

Страница 27: ... modules to any network user allowing them to listen to the output of any networked amplifier from any location on the network Balanced Audio Inputs This allows the USP3 CN to be used not only as a CobraNet receiver for amplifier audio it provides a remote access point to allow audio to go onto the CobraNet network In applications where a single pair of audio inputs is required into CobraNet this ...

Страница 28: ...lines keep the cables as short as possible Avoid lengths greater than 10 feet 3 meters Do not run the audio input cables together with the high level wiring such as loud speaker wires or AC cords This lessens the chance of hum and noise being induced into the input cables Turn the entire sound system off before changing any connections Turn the level con trols down before powering the system back ...

Страница 29: ... shows a typical TCP IQ network TCP IQ offers a number of advantages over other non network communications platforms The use of off the shelf networking hardware This technology makes use of network connectivity and hardware commonly used in the computer industry making it both low cost and readily available Better Performance The capacity for real time display of meters is greatly enhanced throug...

Страница 30: ...d their use is highly encour aged 100Mb switches are required in CobraNet networks Communications between networks is allowed but requires the use of a special piece of equipment called an IP router The router acts as a Gateway to allow this communications to exist Any data traffic that is to go to the other network is routed through the IP Router Each IQ Component has three identifiers that are u...

Страница 31: ...ate utility is then run which queries the network and establishes what IQ components and their associated MAC addresses are present An IP Address and IQ Address can then be assigned to each IQ component The MAC address does uniquely identify each TCP IQ component and can be used to estab lish the physical location of the unit The binding of the MAC address to the IQ address through the use of the ...

Страница 32: ...y within IQWin 5 3 A Closer Look at CobraNet CobraNet is a licensed technology developed by Peak Audio Inc consisting of propri etary communications protocol firmware and hardware It allows reliable deterministic transmission of digital audio over a 100Base T Fast Ethernet network This section provides an overview of CobraNet Peak Audio has provided a number of technical papers that describe Cobra...

Страница 33: ...ired for reliable transmission is fixed at 256 samples yielding a network transmission latency of 5 333 ms 256 samples at 1 48 kHz per sample 5 3 3 The Conductor A CobraNet system is coordinated by one of the devices called the conductor When two or more CobraNet devices are interconnected properly one of the devices will be elected the network conductor based on a priority scheme The Conductor in...

Страница 34: ...eivers This type is most used on repeater networks limited to 64 channels Bundles from 256 to 65 279 are uni cast This means that they are transmitted to one and only one receiver This type is most used on switched networks requiring more than 64 channels A Bundle can carry up to 8 audio channels see the block diagram in Section The usual assignment is 8 channels at 20 bits Using less audio channe...

Страница 35: ...switching technology to significantly conserve overall network bandwidth and in turn allow many more Bundles and Audio Channels Another enhancement available with most switched network environments is full duplex links A full duplex link allows simultaneous send and receive over the same Ethernet con nection This allows simultaneous send and receive of up to 64 channels per node for a total of 128...

Страница 36: ... 5 is a voltage supply pin for use with the control input Pins 1 and 6 support the Listen Bus feature 6 1 1 AUX Output The AUX output provides a 15 VDC output current limited to 10 mA which can be switched on or off under firmware control In its basic mode the AUX output can be used to control auxiliary equipment To control AC line powered equipment the AUX output must actuate a relay The relay wo...

Страница 37: ...is used for such a system This way if the panel light is on the operator knows all is well If it is off the operator knows the amplifier has an error or that it is not powered Figure 6 2 Wiring a Remote Preset Selector The other enhanced AUX output mode is Flash Preset This mode allows remote indication of the selected preset In this mode the AUX output will flash a number of times equal to the se...

Страница 38: ...P3 CN Load Supervision feature can be used to monitor the amplifier load in real time with almost any program material Average load impedance is calculated as a function of amplifier output voltage and current The system requires approximately 20 30 mA of average amplifier output current for adequate supervision This allows typically low average output power levels of less than watt with most load...

Страница 39: ...tion level it is not uncomfortable An 8 ohm example 30 mA into 8 ohms 0 007watts 8 ohm driver sensitivity 100dB for 1W 1 meter 0 007W 1W 20dB Required SPL for supervision test is 100dB 20dB 80dB SPL 1 meter 6 2 1 Typical Load Characteristics It is well known that the typical loudspeaker impedance is not the same for all frequencies This variance is due to the effect of electrical properties such a...

Страница 40: ...12 µs latency Signal to Noise Ratio 70 dB A weighted 20Hz 20kHz Crosstalk 60 dB 1KHz Common Mode Rejection CMR 50 dB typical Distortion 0 05 THD N 20Hz 20kHz Frequency Response 0 5 dB 20Hz 20kHz Overall Audio Performance DSP Processing 32 bit Floating Point 665 µs latency DAC Conversion 24 bit 135 µs latency Dynamic Range 105 dB A weighted 20Hz 20kHz audio sourced from muted CobraNet channel Disto...

Страница 41: ...usly with the PIP s data indicator Problem Green Preset indicator is flashing or is not flashing Possible cause This is not a problem This indicator signals the number of the current preset if active by flashing a series of flashes equal to the current preset number A preset is considered active if the PIP settings match those in the selected preset If a change is made to any setting then the pres...

Страница 42: ...pay the cost of shipping and Crown will reimburse you Send copies of the shipping receipts to Crown to receive reimbursement Your repaired unit will be returned via UPS ground Please contact us if other arrange ments are required 9 2 2 Factory Service Shipping Instructions 1 Before sending a Crown product to the factory for service first call Crown Factory Ser vice for a return authorization RA nu...

Страница 43: ...n all six sides of unit securely seal the package with an adequate carton sealing tape Do not use light boxes or peanuts Damage caused by poor packing cannot be covered under warranty 4 Do not ship the unit in any kind of cabinet wood or metal Ignoring this warning may result in extensive damage to the unit and the cabinet Accessories are not needed do not send the product documentation cables and...

Страница 44: ...uthorized service center or our factory All expenses in remedying the defect including surface shipping costs in the United States will be borne by us You must bear the expense of shipping the product between any foreign country and the port of entry in the United States and all taxes duties and other customs fees for such foreign shipments HOW TO OBTAIN WARRANTY SERVICE You must notify us of your...

Страница 45: ...ing costs and other finance charges less a reasonable depreciation on the product from the date of original purchase Warranty work can only be performed at our authorized ser vice centers We will remedy the defect and ship the product from the service center within a reasonable time after receipt of the defective product at our authorized service center HOW TO OBTAIN WARRANTY SERVlCE You must noti...

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