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BLUE SKY
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AMC
Instruction Manual
32 pgs10.4 Mb0

BLUE SKY AMC Instruction Manual

Page 1
AUDIO MANAGEMENT CONTROLLER (AMC) MANUAL
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Description
Each channel of the AMC has a sample rate converter (by stereo pair), a 31 band 1/3 octave equalizer, eight parametric / free assignable filters, individual channel delays, and lip-sync delay.
An 8x8 cross-point mixer allows any input to be mixed to any output.
The flexible bass management system can be customized on a channel-by-channel basis, or turned-off completely.
The AMC has 6 presets, each of which stores complete setup information, including filter setting, I/O configuration, delays, etc.
The AMC includes control software that is a PC (Mac in process) application that connects through the USB port.
The AMC includes SRO (Sound Room Optimization) software which includes an MLS based measurement system with auto room correction or expert manual mode, correcting the in room speaker response to a user definable target curve.
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Table of Contents
AMC Features ...................................................................................................................................5
AMC I/O connections .......................................................................................................................6
Analog I/0 ................................................................................................................................. 6
Digital I/0 .................................................................................................................................. 6
External Mute Input .................................................................................................................. 7
Remote cable............................................................................................................................ 8
Quick setup and use ........................................................................................................................8
The AMC Remote .............................................................................................................................9
The AMC Remote / Operation .................................................................................................. 9
The Menu ............................................................................................................................... 10
Menu Items ........................................................................................................................... 11
Firmware Updates ..........................................................................................................................12
Upgrading the firmware in the AMC RACK to the latest version. ........................................... 12
Upgrading the firmware in the AMC Remote to the latest version.......................................... 13
The AMC Control Software ...........................................................................................................14
Installing the AMC Control software ...................................................................................... 14
Running the Program ............................................................................................................. 14
AMC Main Control Panel ..............................................................................................................15
Navigating around the interface.............................................................................................. 15
Cross Mixer ....................................................................................................................................18
Bass Management .........................................................................................................................19
EQ Screen .......................................................................................................................................21
Speaker Room Optimization (SRO) ..............................................................................................23
Overview ................................................................................................................................ 23
Additional equipment you will need ....................................................................................... 23
Measuring and optimizing your speaker system .................................................................. 24
Guidelines on microphone setup ........................................................................................... 25
Setting up the ART USB Dual Pre to use with Blue Sky SRO Software................................. 26
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Setting up the ART USB Dual Pre for use with the AMC SRO .............................................. 27
The SRO Main Screen ...................................................................................................................28
Target Curves ................................................................................................................................30
AMC Specifications .......................................................................................................................32
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AMC Features
o 8 balanced analog inputs and outputs with switchable +12 / +24 dBu maximum levels
o 8 AES 110 ohm digital inputs and outputs, each transformer Isolated
o Burr Brown / TI PCM1792A digital to analog converter with 132 dB SNR
o Burr Brown / TI PCM4222 analog to digital converter with 124 dB SNR.
o Cirrus Logic CS8422 sample rate converter with 140 dB SNR
o National LME49760 op amps, with 55 MHz bandwidth and 20V/us slew rate
o Analog / Digital I/O selectable in pairs.
o Simultaneous digital and analog outputs
o Adjustable analog and digital output offset
o Quad Analog Devices 56 bit fixed point processor
o Digital input sample rate range 44.1 kHz to 192 kHz.
o Internal sample rate 48 kHz or 96 kHz (switchable)
o 31 Band 1/3 octave double-precision digital EQ per channel
o 8 user definable 2nd order double precision digital filers per channel
o 6 user defined presets
o 4 line large lighted high contrast display on remote
o Solo / Mute channel selection buttons.
o Mute, Dim, and Ref gain buttons
o Adjustable channel and lip sync delays
o Adjustable individual channel calibration
o SRO room optimization software
o Firmware updatable through the USB port.
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AMC I/O connections
The AMC I/O connections use Tascam DB25 connectors for both analog and digital. These DB25 cables are not supplied.
Channel assignments
The channel assignments are SMPTE standard
1) Left
2) Right
3) Center
4) LFE
5) Left Surround
6) Right Surround
7) Left Rear
8) Right Rear
The channel assignments match the labels on the remote.
However, these channels labels are for reference only. Any channel can be used for any purpose desired. The only exception is the LFE channel which includes the bass management filters. Since these filters can be disabled (using the AMC Control Software), the LFE channel can be reconfigured as a standard channel like the others.
Analog I/0
The analog inputs and outputs are balanced with a switchable maximum level of +12/+24 dBu. Both analog and digital outputs are active irrespective of whether the inputs are digital or analog.
Digital I/0
The digital inputs and outputs are AES/ EBU 110 ohm and transformer isolated. All digital inputs have an integrated sample rate converter that automatically converts incoming sample rate to the internal AMC sample rate. The internal sample rate can be set as a global parameter to 48 kHz or 96kHz through the menu on the remote.
NOTE: Setting the sample rate, 48 kHz or 96 kHz, will reset the AMC rack unit and load the new sample rate into the software program.
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The digital inputs have built-in 140 dB dynamic range sample rate converters, which convert any digital input to the native sample rate. The 4 input pairs do not have to be at the same sample rate or synchronized to a master clock.
External Mute Input
The green barrier strip has an external mute input, which allows the external switch or +5 volt trigger to mute and un-mute the entire system. This function is normally used for talk-back muting.
The mute input is opto-isolated to prevent ground loops when using an external supply. To use an on-off switch, connect the normally open switch from across pin 4 and 5 and connect a jumper wire from pin 1 to pin 4. Closing the switch will activate mute.
To use an external voltage trigger voltage to mute the rack, connect the trigger source across pin 4 and 5. Applying 5 volts will mute the AMC. Removing the 5 volts will un-mute the AMC.
When the AMC is muted externally, the remote will display the mute status.
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Remote cable
The cable between the remote and the rack unit is a standard Ethernet Cat-5/6 UTP cable with RJ–45 connectors.
However the signal protocol between the remote and rack is RS-232 not Ethernet. The remote cable has been tested to 50 ft.
Warning: Do not plug the remote or rack unit into an Ethernet port. It was not designed for this, and doing so may damage the port or unit.
Quick setup and use
The AMC comes with six default presets.
Any preset can be reconfigured to analog, digital or a mix
The display will show a brief description of the selected presets. These presets can be modified on a limited basis using the menu on the remote, or completely reconfigured using the AMC Control Software.
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The AMC Remote
The AMC Remote / Operation
MUTE – mutes all channels, both digital and analog
REF – sets the system gain to a user defined reference level. The default setting is -20 dB. The
default setting can be changed using the remote menu or the AMC Control Software.
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DIM/CANCEL – sets the system gain to a user defined level. The default setting is -30 dB. The default setting can be changed using the menu or the AMC Control Software. The DIM/CANCEL switch is also used to exit the menu mode
MUTE MODE – mutes the selected channels when the channel button is pressed.
SOLO MODE – solos the selected channels when the channel pressed.
SOLO/MUTE BUTTON – switches between modes
PRESETS – loads the preset.
MENU – switches the remote to menu mode, which allows a limited number of parameters to be
changed on a preset. When exiting the menu mode, the changed parameters are automatically stored in flash memory.
GAIN – changes the system gain in increments of +/- 1 dB. Also used to scroll through the menu and change parameters.
The Menu
You enter the menu by pressing the Menu switch and leave the menu by pressing the Dim/Cancel switch. The menu works in 2 modes. A scroll mode to scroll the parameters using the gain control. And a parameter mode to change parameters using the gain control. To switch between modes, you tap the Menu switch. When you tap the Dim/Cancel switch to leave the menu mode, the preset is automatically saved with the updated parameters.
An example of using the MENU to change the left calibration to +3 dB.
1) Tap the Menu switch.
2) Rotate the gain control to cycle through the menu items to Left Cal.
3) Tap the Menu switch to enter parameter mode.
4) Rotate the Gain control CW or CCW until the display reads +3.0 dB.
5) Tap the Menu key to go back to scroll mode.
6) Tap the DIM/CANCEL button to exit the menu and store the preset.
7) To change multiple items, follow 1-5 on each parameter and then hit the Dim /Cancel button when you have completed all your changes.
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