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External Control Calibration

Page 37

Peavey Electronics Corporation

Calibrating CV Inputs

To calibrate these controls, the buttons must be set when the external control device is set at its operating maximum and mini-
mum positions.  For example, in the case of a rotary control acting as a variable resistor, these positions would be full counter
clockwise for absolute minimum, and full clockwise for absolute maximum.  When the control is at these positions, the scale of
the raw input value should track likewise.  In order to properly calibrate the control, the control should be installed in its final
position with the wire and terminations that will actually be used on the jobsite.  You may need two people and radios to prop-
erly accomplish this procedure on most jobsites, one person at the control location, the other at the MediaMatrix

®

computer.

STEP 1:

Ensure that all connec-

tions are permanent and proper-
ly terminated.

SSE

ET

T

STEP 2:

Turn the rotary control

completely to its minimum posi-
tion, or whatever position
would be considered "OFF".

STEP 3:

Press the Set Min but-

ton for the appropriate port.
NOTE: In this example, the mini-
mum value is 45.  This is typical,
as it represents the total resist-
ance to the control voltage.  The
resistance includes the loss across
the wire, termination points, etc.
Do not be alarmed if your
min/max values do not reach the
limits of 0 or 255.

STEP 4:

Turn the rotary control

completely to its maximum
position, or whatever position
would be considered full "ON".

STEP 5:

Press the Set Max but-

ton for that port within the
MM

™

-8802's software control

panel within MediaMatrix. The
max value in this example is 116,
which again is short of the max
value of 255. Do not be con-
cerned about these discrepancies
in the range. The point is to cali-
brate your control to the software
so the control will track correctly.

Now operate the external rotary
control and observe the range in
the Raw Input indicator. If you
calibrated the control to its maxi-
mum (full clockwise & counter-
clockwise) travel, then the high
and low limits of this range
should match the values now
showing in the Set Min and Set
Max indicators. Repeat this pro-
cedure for each externally con-
nected control in your system.

SSE

ET

T

T

TU

UR

RN

N

C

CC

CW

W

T

TU

UR

RN

N

C

CW

W

«
...
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36
37
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39
...
»

Содержание MediaMatrix MM-8802

Страница 1: ...MM 8802 MediaMatrix Break out Box BoB User Manual ...

Страница 2: ...bole est utilisé dans ce manuel pour indiquer à l utilisateur la présence d une tension dangereuse pouvant être d amplitude suffisante pour constituer un risque de choc électrique Ce symbole est utilisé dans ce manuel pour indiquer à l utilisateur qu il ou qu elle trouvera d importantes instructions concernant l utilisation et l entretien de l appareil dans le paragraphe signalé ATTENTION Risques ...

Страница 3: ... should be taken to ensure that the installation is clear of possible sources of contamination Make sure that the product s ventilation openings are not exposed to possible sources of liquid gases or other contaminants This product should be inspected by a qualified service technician if the power supply cord or con nector has been damaged if the unit has been dropped or if a foreign substance has...

Страница 4: ...onnections 26 Control Voltage CV Input Ports 29 Control Voltage CV Connection Examples Gain Structure 16 MM 8802 Software Control Device 20 21 MediaMatrix Software Input Output Wiring Block Devices 22 23 Panel Features 24 25 The Test View 13 Audio Inputs 14 MM 8802 User Manual Table of Contents Software Devices for Control Ports 36 Calibrating CV Inputs 37 Fault Contacts 38 Switch 30 Audio 27 Exte...

Страница 5: ...nput Connections Fig 4 29 Control Voltage CV Circuit Fig 5 29 Control Voltage CV Input Switch Interface Example 30 Control Voltage CV Rotary Control Interface Example 31 External DC Power Supply Interface Example 32 Logic Output Port Connections Fig 6 33 Logic Output Circuit Fig 7 33 Using Logic Ports LEDs 34 Using Logic Ports with High Current Devices 35 CV Input Values TTL Logic Output Toggle Bu...

Страница 6: ...al lation of any active electronic component Failure to implement proper cabling systems may cause your system to perform at inferior levels Several associated products are required to complete a working system using the MM 8802 This manual frequently makes reference to these products but does not provide specific configuration or installation information on them Please refer to the manuals for th...

Страница 7: ... comment about this manual or would like to make a sugges tion please write to Peavey Electronics Corp Architectural Acoustics Division 711 A St Meridian MS 39301 Thank you again for using Peavey What s In The Box The MM 8802 is packaged in a single container This container includes the following items 1 MM 8802 Break out Box 1 IEC removable power supply line cord 120VAC Domestic 230VAC Export 17 ...

Страница 8: ...ontrol fea tures monitoring and installation benefits Using state of the art technolo gy and advanced audio converters make the MM 8802 one of best values in the commercial digital audio market Designed for high end fixed install engineered audio systems the MM 8802 includes functionality designed for the system designer These new features make large scale system design engineering and implementat...

Страница 9: ...Rooms Board Rooms Houses of Worship Courtrooms Auditorium Cafetorium Lecture Hall Sound Reinforcement Meeting Rooms Convention Centers Stadiums Arenas Paging Background Music Retail Spaces Restaurants Live Performance Venues The new features performance advantages and functionality included in the MM 8802 make this product one of the best audio values avail able From simple X Frame systems with ba...

Страница 10: ...rom the RJ 45 connector Creating tightly wrapped CAT 5 wire bundles can cause loose crimp joints and defective terminations To successfully install your new MM 8802 and perform the testing exam ples contained in this manual you will need the following components In MediaMatrix the minimum configuration consists of a single DPU pro cessing engine X Frame or frame DSP card combination and I O Depend...

Страница 11: ...SP The two audio channels left and right from the CD player are then inside the MediaMatrix dig ital processing engine or DPU You use wire and audio devices to create any signal flow you desire for your CD audio signal You can split it process it mix it switch it squash it loop it delay it whatever you need to do you can do with MediaMatrix In this example we have a stereo mixer stereo compressor ...

Страница 12: ... 8802 and its software control device The second half to this equation is the audio transport The concept of audio I O is an extremely important part of configuring MediaMatrix systems It is the wire that gets audio into through and out of the system Within MediaMatrix this process is represented by two I O blocks with nodes on them These represent the actual input and output points for the system...

Страница 13: ...ath within MediaMatrix Audio enters and exits the MediaMatrix system at the wire blocks and travels within the MediaMatrix system digitally The wires represent this audio path within the MediaMatrix system Remember the BoB Control Block includes only the analog audio controls for the MM 8802 while the wiring blocks include the digital audio controls Both of these control sets are critical to the p...

Страница 14: ... level inputs and installs into slot 1 or slot 2 of the MM 8802 input section The MM Line 4 includes full software control of input sensitivity and analog gain It is possible to install one or two MM Line 4 modules into the MM 8802 MM Mic 4 The MM Mic 4 input card includes four mic or line level inputs and installs into slot 1 or slot 2 of the MM 8802 input section The MM Mic 4 features studio gra...

Страница 15: ...e is no input module present At the time of this printing there is no option for using an MM 8802 without any input modules installed If this LED is illuminated it may indicate an unsuccessful installation of the input module Input Connector Header Input Channels 1 4 Shown installed with MM Line 4 input module Black header Input Connector Header Input Channels 5 8 Shown installed with MM Mic 4 inp...

Страница 16: ... running in New mode the MM 8802 includes functionality that sup ports software control of all analog settings when using current MWare V3 1 2 or X Frame 88 V2 0 or higher software When running in Legacy mode that is systems that are running older software the adjustments of Full Scale Input Sensitivity and Full Scale Output Drive levels are adjustable from internal DIP switches In this mode the M...

Страница 17: ...switches simply shift this dynamic range upwards or downwards before the signal gets into the MediaMatrix DPU This is done primarily to accom modate the connection of third party components and to match source output levels The setting of the Full Scale Input Sensitivity will determine what level is required to drive the A D converter to full scale and illuminate the 0 dB front panel input meter F...

Страница 18: ...dB on the front panel meters Remember the 23 0 dB DPU level is always the maximum full scale level that can be received by or sent to the MM 8802 Anything above 23 0 dB DPU level that is sent to the BoB out put block and thus to the MM 8802 s D A will be clipped The additional 12 dB of headroom is only available within the DPU MM 8802 User Manual Page 18 http aa peavey com copyright 2000 All Right...

Страница 19: ...on If the switch is located in the center of its trav el it is not adjusted correctly Just below the switches is a printed key of the switch positions and their relative levels The key applies to all channels Front Rear Adjustment of the DIP switches requires access to the inside of the MM 8802 It is highly recommended that this proce dure be performed ONLY by qualified service personnel Remove th...

Страница 20: ...knob and the corresponding indicator above it This controls the ana log output stage after the D A converter The range is 95 5 to 30 5 dB 0 5 dB TTL OUT This is a maintained ON OFF button In the down ON position a positive control voltage is output on the corresponding TTL logic output port CV INPUTS Displays the value of the control voltage input when an external device is connected to the corre ...

Страница 21: ...nnel Functional only with MWare 3 1 2 or X Frame 88 Version 2 see pages 16 19 RAW INPUT CV CAL DIALOG BOX This control indicates the actual value as deter mined by an external control Use this indicator to see exact performance of external devices The range is 0 255 There is an indicator for each channel See page 37 SET MAX BUTTON CV CAL DIALOG BOX This is a momentary button used to set the minimu...

Страница 22: ...ed ON OFF button When in the down ON or MUTE position the incoming digital audio is muted The mute stage is in the DPU after the MM 8802 s A D converter LEVEL Typ each channel This control and its associated numeric indicator adjusts the amount of digital input level This control is in the DPU after the MM 8802 s A D converter The range is 100 dB to 12 dB 1 2 1 2 ...

Страница 23: ... output block exceeds 23 dB MUTE Typ each channel This is a maintained ON OFF button When in the down ON or MUTE position the outgoing digital audio is muted The mute stage is in the DPU before the MM 8802 s D A converter LEVEL Typ each channel This control and its associated numeric indicator adjusts the amount of digital output level This control is in the DPU before the MM 8802 s D A con verter...

Страница 24: ...on digital signal level at the MediaMatrix BoB output device This meter does not indi cate analog levels at the output of the MM 8802 Actual analog audio levels will vary based on the setting of the Full Scale Output switches see pages 16 19 21 SAMPLE RATE LEDS Indicates the current operating sample frequency The sample rate is determined by the compiled configuration in the connected MediaMatrix ...

Страница 25: ...ECTORS Two RJ 45 connectors for connecting the TX transmit and RX receive CAT cables to MM DSP RJ or X Frame 88 digital audio proces sor products RX LED This LED will illuminate when audio data is successfully received by the transmit ting DPU product CONTROL VOLTAGE CV INPUTS Eight 2 wire 0 10 V DC control voltage ports for connecting external analog controls Positive voltage is supplied across a...

Страница 26: ...inal MediaMatrix audio processing card also known as the legacy DPU card The MM DSP uses a proprietary 9 pin DB 9 connector for the digital audio interface with MM 8800 Series break out boxes This cus tom cable available only from Peavey is designed to carry the high speed data between the MM DSP and MM 8800 Series Break out Boxes in a single cable Both TX and RX conductors are housed in the same ...

Страница 27: ...ossible to connect to pins of an adjacent channel If you are not careful instead of connecting to Positive Negative and Shield you may end up connecting Negative Shield Positive or Shield Positive Negative Your finished connection should look like this STEP 2 Carefully insert each conductor into the opening of the Euro connec tor Take care to ensure that polarity is observed and that the shield is...

Страница 28: ...arrangement used for the audio connections These connectors provide ter mination to the MM 8802 s Control Voltage CV and Logic Output ports There are separate connectors for the eight CV ports and the eight Logic Output ports The method for terminating these connectors is the same as for the audio connectors See page 27 however there are only two conduc tors for each port instead of three The use ...

Страница 29: ... 3 5 etc are return ports and each is independent of the other There are a total of eight return ports To enable an external control the supplied voltage must be returned to the odd num bered pins referenced to the MM 8802 s internal ground What is very important to understand about the CV input port is that this is NOT a dry contact configuration It is not a Form A closure where the contacts are ...

Страница 30: ...r It is important to note that what is happening here is a switching of the DC voltage The ground is not nec essary for the switching action as it is internally referenced When making this type of connection it is advisable to use a high quality 2 conductor cable A shield is not necessary but the conductors should be at least 20AWG Heavier wire should be used as cable runs exceed 100 Remember unle...

Страница 31: ...can convert the above configuration into a true potentiometer by moving the wiper to the IN terminal the top of the con trol to the terminal and bringing the ground terminal out to the bottom leg of the pot This ground connection can be found on the second row of pins If you require this configuration you should use a 10k Ohm linear taper potentiometer for best results Normally this is not require...

Страница 32: ...ts For example in a switching configuration there are only two values ON or OFF When the return pin sees 10 volts an ON condition is present How fine the range between ON and OFF is a matter of calibra tion In the case of variable controls such as a fader that has a value of 100 dB to 0 dB the range of the control voltage is calibrated across 256 individual values that represent the audio range of...

Страница 33: ...uts When logic is toggled ON from the MediaMatrix software the odd numbered pin will output 5 V DC referenced to the ground pin This is typical of each port Each logic port shares a logic driver and a common load capability The total amount of current sink or source is 7 mA per port It is very important to observe this current limit Connecting a device that will require more than the available cur...

Страница 34: ...d terminal in this case is pin 2 GND of the TTL output connector and is wired to the cathode side of the LED The OUT pin Pin 1 is wired to a current limiting resistor then to the anode side of the LED As before it is advisable to use a high quality 2 conductor cable A shield is not necessary but the conductors should be at least 20AWG Heavier wire should be used as cable runs exceed 100 Unlike the...

Страница 35: ...gle N O output The circuit examples shown on this page are intended to illustrate the use of the TTL Logic Output port with simple transistor circuits This is NOT a circuit design The values parts and configuration of this circuit are an approximation of what would actually be required in real world audio systems installations Any circuit constructed for this purpose should be designed specificall...

Страница 36: ...ional controls and indica tors These controls display raw input values and allow for calibration for each individual port Refer to Fig 9 The row of indicators labeled Raw Input displays the exact input Raw Input from the return pin of the CV port The scale represents the return of 0 10 Volts in precise hexadecimal steps The scale is 0 255 with 255 representing 10 Volts Use this indi cator to see e...

Страница 37: ...onsidered OFF STEP 3 Press the Set Min but ton for the appropriate port NOTE In this example the mini mum value is 45 This is typical as it represents the total resist ance to the control voltage The resistance includes the loss across the wire termination points etc Do not be alarmed if your min max values do not reach the limits of 0 or 255 STEP 4 Turn the rotary control completely to its maximu...

Страница 38: ...ons exist within the MM 8802 Essentially the fault monitoring functionality is limited to conditions specific to the MM 8802 To correctly supervise an inte grated system fault monitoring should be implemented on each hardware component separately MediaMatrix software pro vides many additional features that can be used to provide supervision functionality For more information on these features plea...

Страница 39: ...ber that when using the legacy connection the proprietary cable MUST be used The presence of the 9 pin DB 9 connector does not constitute using standard computer cables The legacy cable avail able only from Peavey Electronics is the only supported method of connect ing the BoB to the MM DSP or X Frame digital audio processor NOTE Although microphone level audio could theoretically be terminat ed t...

Страница 40: ...ry inexpensive and are available in many lengths and colors However we realize that in order to properly dress off your rack wiring you may at some point be required to build your own CAT 5 cables Just like most wire types there are stranded and solid varieties of CAT 5 cable This is important to know because the RJ 45 connector is different for each type of wire The standard bent tyne style conne...

Страница 41: ... is a positive and negative conductor for each pair indicated by the color code In Bell parlance positive is labeled as the Tip and negative as the Ring It is important to know this since a lot of documentation on the subject still uses this terminolo gy Notice on the chart that the order of the wire pairs does not follow the connector pins as mentioned earlier Don t let that confuse you The first...

Страница 42: ...can also get help by sending us an e mail or posting a request on the message board Finally if you still cannot get the information you need please do not hesitate to call us We have extensive phone support services and will be happy to assist you The contact infor mation for the Architectural Acoustics Division is shown below Peavey Electronics Corp Architectural Acoustics Division 711 A St Merid...

Страница 43: ... work with network fiber interconnects Connecting the MM 8802 to net working equipment can cause damage to the MM 8802 and or the networking equipment Q Is it possible to use a hub to daisy chain multiple MM 8802s I want to do this to extend the capacity of the DSP card A No The cabling interface on the MM 8802 is not ethernet or other network standard This interface is a proprietary con nection a...

Страница 44: ...c Range Equivalent Input Noise EIN Common Mode Rejection Ratio Crosstalk Full Scale Input Sensitivity Settings Full Scale Output Settings Analog Gain Range Input Impedance Output Impedance Minimum Load Impedance Audio I O LED Metering 0 0 3 dB 20 20 kHz referenced 1 kHz Line Level 0 006 Mic Level 0 01 106 dB Mic Level 126 dBu 55 dB 90 dB Line Level 30 24 18 or 12 dBu Mic Level 42 dBu at 63 dB gain...

Страница 45: ...w Mode 100 240 VAC 47 to 63 Hz Universal Power Supply 456 mA rms 31 5 W 107 5 BTU 27 kcal Grey powder coat painted steel UL CUL CE and FCC part 15 Class A Notes 1 All specifications are typical for any channel s 2 All measurements are made from analog input to analog output Typical performance reflects both input and output analog circuit behavior 3 All specifications are for an AC line input of 1...

Страница 46: ...our Authorized Peavey Dealer or Authorized Peavey Service Center OR 2 Ship the defective item prepaid to Peavey Electronics Corporation International Service Center 412 Highway 11 80 East Meridian MS 39301 or Peavey Canada Ltd 95 Shields Court Markham Ontario Canada L3R 9T5 Include a detailed description of the problem together with a copy of your sales receipt or other proof of date of purchase a...

Страница 47: ...Index Page 47 Peavey Electronics Corp Index ...

Страница 48: ...onductors 26 Configure minimum system 10 Configuring 12 Connections 26 Connections specifications 44 Connector assembly 27 Connector header 27 Contacting Peavey 42 Contractor fabricated example 35 Control Block 12 13 Control device 20 Control Grouping 36 Control Mode 20 Control panel 12 16 Control voltage 20 28 Control Voltage CV Input Ports 29 Control voltage CV Inputs 25 Control Voltage Input Co...

Страница 49: ...able 25 26 39 43 Legacy digital interface connector 25 Legacy mode 16 19 Legacy operation 16 Legacy DPU card 26 Level control digital output 23 Level digital control 22 Lights 35 Line input gain 20 Line inputs 14 Line level 14 19 Link LED 24 Locked LED 20 Logic driver 33 Logic Output 28 Logic Output Ports 20 25 33 Logic Output software controls 36 Logic outputs 25 33 Logic Ports 35 36 Logic Ports ...

Страница 50: ...ts 36 Software meters 18 Software based audio meters 17 18 Software based controls 34 Source output levels 17 Specifications 44 SPST switch 30 Static sensitive components 19 Studio grade microphone preamplifiers 14 Supervised systems 38 System crashes 38 T T Transistor logic 35 Technical Services Group 42 Technical Support 42 Termination 27 Termination to rotary control 31 Test file view 13 THD No...

Страница 51: ...tions subject to change without notice A product of Peavey Electronics Corporation 711 A Street Meridian MS 39301 USA 601 483 5376 FAX 601 486 1678 http aa peavey com Copyright 2001 All Rights Reserved Printed in USA 3 2001 ...

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