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<h1 class="firstHeading">PIP-BLU</h1>
<p><img src="PipBLuPanel.bmp" alt="" style="border-left-style: Solid; border-top-style: Solid;
border-right-style: Solid; border-bottom-style: Solid; border-left-width: 2px;
border-top-width: 2px; border-right-width: 2px; border-bottom-width: 2px;" width="140" height="95" border="2"></p>
<p>The PIP-BLU is a Programmable Input Processor input module for Crown
CTs Series, two channel amplifiers. &#160;The PIP-BLU connects to an Ethernet
network allowing it to be remotely controlled and monitored via London
Architect. &#160;In addition the PIP-BLU allows the transport of real-time
digital audio via the BSS Audio <a href="BLU_link.html">BLU link</a> audio
bus allowing digital audio to be transported between BSS London devices
and the amplifier.</p>
<h2>Inputs and Outputs</h2>
<ul type="disc">
<li class="p"><p>&#160;Two analogue audio inputs and BLU link i/o.
&#160;Up to 4 channels of BLU link audio can be assigned to the input
channels.</p></li>
<li class="p"><p>Two amplifier outputs, two analogue audio outputs
(for monitoring) and BLU link. &#160;Two channels of audio can be
assigned to the BLU link output channels.</p></li>
</ul>
<h2>Properties</h2>
<p class="hcp1"><img src="PipBluProps.bmp" alt="" width="299" height="137" border="0" class="hcp2"></p>
<h1>Clock</h1>
<p class="hcp1">Sample
Rate - <span class="hcp3">The sample rate can be set to
48kHz or 96kHz</span></p>
<h1>Parameter Presets</h1>
<p><span class="hcp4">Proxy Device For Presets -</span> Presets
cannot be recalled directly from the PIP BLU which means that <span class="hcp5">you
are required to use a London device as a proxy.</span> <span class="hcp5">&#160;</span><span class="hcp5">All London devices which are in your design
will be listed for you to select which one you wish to use as proxy. &#160;When
a parameter preset or venue preset is recalled the proxy device manages
the setting of the PIP BLU to its preset state.</span></p>
<h1><a name="BLU_link" id="BLU_link"></a>BLU link</h1>
<p><span class="hcp4">BLU link -</span> Click on the ...
icon to assign the BLU link network you want the device to be part of
.</p>
<p class="hcp1">Channel
Assignment <span class="hcp3">- The BLU link input and
output channels can be assigned in properties, click on the icon to open
the channel assignment dialog.</span></p>
<p style="margin-left: 40px; text-indent: -40px; font-weight: normal;"><img src="PIP_BLU_Assignments.bmp" alt="" width="825" height="471" border="0" class="hcp2"></p>
<p style="margin-left: 0px;">Use the channel assignment dialog to select
which BLU link channels you want to pick off for the BLU link inputs and
outputs. &#160;Up to 4 channels of BLU link can be assigned to the inputs
and 2 channels to the outputs. &#160;See <a href="BLU_link.html#Configurin_A_Device">BLU
link Configuring a device</a>. &#160;For the PIP-BLU the dialog displays
the BLU link channel, the BLU link channel name from the transmitting
device, the name of the transmitting device and the name of the receiving
device. &#160;Since the PIP-BLU doesn't have BLU link objects as such,
the fields for Tx object and Rx object are blank for the amps.</p>
<h2>Control Panel</h2>
<h2><img src="PIP_BLU_Panel.PNG" alt="" width="1016" height="599" border="0" class="hcp2"></h2>
<h1>Main Panel</h1>
<p class="hcp6">Limit LEDs - <span class="hcp3">The
LED indicator IS GREEN when no gain reduction is applied and changes to
AMBER when gain reduction is greater than 0dB throughout the signal path.</span></p>
<p class="hcp6">Temp LEDs - <span class="hcp3">The
Thermal Status indicator is normally GREEN and will change to AMBER when
the thermal headroom used reaches 60% or more.</span></p>
<p class="hcp6"><span class="hcp4">Power -</span>
<span class="hcp3">Power on/off for each channel of the
amplifier. &#160;Displays GREEN when power is on.</span></p>
<p class="hcp6">Mute <span class="hcp3">-
This control mutes / un-mutes the input signal through the control module.</span></p>
<p class="hcp6">Polarity <span class="hcp3">-
Inverts the signal per channel.</span></p>
<p class="hcp6">Output Gain - <span class="hcp3">The
output fader controls allow you to manually set the output level for both
channels of the amplifier.</span></p>
<p class="hcp6">Output Clip LEDs <span class="hcp3">-
These indicators turn RED when the output is clipping.</span></p>
<p class="hcp6">Amplifier Output Meter <span class="hcp3">-
Displays the amplifier peak output levels for both channels.</span></p>
<p class="hcp6">Input Clip LEDs <span class="hcp3">-
These indicators turn RED when the input signal is clipping.</span></p>
<p class="hcp6">Amplifier Input Meter - <span class="hcp3">Displays
the &quot;raw&quot; (before attenuation) RMS input level presented to
both amplifier inputs. &#160;The signal displayed on these meters is the
Amplifier Input Source which has been selected on the Signal Path page.</span></p>
<p class="hcp6">Data <span class="hcp3">-
Engaging this control will illuminate the data LED on the front panel
of the amplifier thus allowing you to see which amplifier is being controlled.
&#160;</span></p>
<p class="hcp6">Stereo / Mono <span class="hcp3">-
You can select between three modes, Dual, Y, and Bridge</span></p>
<p class="hcp7">Dual - <span class="hcp3">This
mode is the default configuration for the amplifier. In this configuration
the amplifier will act as a typical amplifier. It can also be referred
to as 2 x 2 mode. Each channel acts independently.</span></p>
<p style="margin-left: 40px; font-weight: normal;"><span class="hcp4">Y</span>
- When Y mode is selected, whichever source is selected for Amplifier
output 1 will be processed through both amplifier channels and will be
applied to both amplifier outputs.</p>
<p class="hcp7">Bridge <span class="hcp3">-
This mode is typical bridge mono mode as the amplifier will act as one
large single channel amplifier. The output wiring must be changed to match
this mode. With the PIP-BLU module installed in a 2 Channel CTs amplifier,
this control still functions. It is not necessary to move the switch on
the rear of the amplifier. However, the light on the front of the CTs
will not illuminate to indicate that it is in bridge mode. &#160;In this
mode only the channel 1 indicators and controls are available, channel
2 controls have no effect.</span></p>
<p class="hcp6">Testing LEDs - <span class="hcp3">Conditions
are not always adequate for load testing. The PIP-BLU reports this through
a pair of &quot;Testing&quot; LEDs. These LEDs may be found both on the
Load Monitoring Page and on the Main View of the Control Panel. If conditions
are adequate for load testing, these LEDs will be illuminated.</span></p>
<p class="hcp6">Status - <span class="hcp3">When
Load Monitoring is turned on and conditions are sufficient for testing
to be taking place, then the Status, as shown both on the main View and
the Load Monitoring pages of the Control Panel, displays:</span></p>
<p class="hcp8"><span class="hcp4">Low</span>
- displayed if the detected average impedance falls below the low limit
as set on the Load Monitoring page.</p>
<p class="hcp8"><span class="hcp4">Normal</span>
-displayed if the detected average impedance falls in the range between
the low and high limits.</p>
<p class="hcp8"><span class="hcp4">High</span>
- displayed if the detected average impedance rises above the high limit.</p>
<h1>Error Reporting</h1>
<p class="hcp9">Channel Specific</p>
<p class="hcp10"><span class="hcp4">Channel Error Reporting -</span> Report
errors to the <a href="MAINEvent_Log_Monitor.htm">Event Log Monitor</a>
and the <a href="MAINEvent_Log.htm">Event Log</a>.</p>
<p class="hcp10"><span class="hcp4">Clip Count -</span> The Count slider lets
you set number of Clip events per unit of time allowed before an error
is generated.</p>
<p class="hcp10"><span class="hcp4">Thermal Level % -</span> This control lets
you set an acceptable thermal level between 1% and 100%. If the actual
thermal level exceeds this setting, an error message will be generated
if selected.</p>
<p class="hcp10"><span class="hcp4">Clip Detect Time % -</span> With the time
control, you can set the number of seconds (1 to 10) during which the
number of &#160;Clip error events are counted for possible error reporting.</p>
<p class="hcp10"><span class="hcp4">Auto Standby Threshold -</span> The PIP-BLU
module has an auto-standby feature that will turn off the high voltage
rails of the amplifier. &#160;The threshold control allows you to set
an input level threshold between -40 dB to +16 dB. If the input level
fails to exceed this threshold for a period of time set by the Turn-off
Delay, this amplifier channel will be put into standby.</p>
<p class="hcp10"><span class="hcp4">Auto Standby Turn-off Delay -</span> The
Turn-off Delay control lets you set the amount of time for which the input
level must remain below the Input Gate Level before the amplifier channel
is put into standby. The range of control is 1 minute to 255 minutes.</p>
<p class="hcp9">Device Specific</p>
<p class="hcp10"><span class="hcp4">Report via Network -</span> The Line Voltage
section allows you to monitor the line voltage in real time. &#160;With
this button engaged the amplifier will report errors to London Architect
and the London Architect Event Log. &#160;You can use the Logic <a href="MAINEvent_Log_Monitor.htm">Event
Log Monitor</a> to set the <a href="Event_IDs.htm">Event IDs</a> and detect
the errors &#160;&#160;</p>
<p class="hcp10"><span class="hcp4">Actual (Volts) -</span> The actual Line
Voltage is displayed here.</p>
<p class="hcp10"><span class="hcp4">High Limit (Volts) -</span> Set the Line
Voltage upper limit.</p>
<p class="hcp10"><span class="hcp4">Low Limit (Volts) -</span> Set the Line
Voltage lower limit.</p>
<h1>Load Monitoring</h1>
<p class="hcp9">On/Off - <span class="hcp3">This
button activates or deactivates Load Monitoring for the selected channel.</span></p>
<p class="hcp9">Impedance Limits - <span class="hcp3">You can define both the high and low
impedance limits. If the average impedance goes outside of these bounds
while Load Monitoring is enabled, then the High or Low Status message
will be shown.</span></p>
<p class="hcp9">Nominal Load Impedance -
<span class="hcp3">Enter a nominal load impedance in ohms.
The value of this setting determines the outcome of the testing.</span></p>
<p class="hcp9">Reporting Out Of Range -
<span class="hcp3">Allows errors to be reported to the
Event Log and the <a href="MAINEvent_Log_Monitor.htm">Event Log Monitor.</a>
&#160;</span></p>
<p class="hcp9">Testing LEDs - <span class="hcp3">The
load can only be measured when there is adequate output level. &#160;Otherwise
the signals are too small to measure and the testing LED is Off. &#160;The
Testing LEDs are also on the Main view.</span></p>
<p class="hcp9">Load Status (see Main Panel
above) - <span class="hcp3">When Load Monitoring is turned
on and conditions are sufficient for testing to be taking place, then
the Status, as shown both on the main View and the Load Monitoring pages
of the Control Panel,displays:</span> &#160;</p>
<p class="hcp8"><span class="hcp4">Low</span>
- displayed if the detected average impedance falls below the low limit
as set on the Load Monitoring page.</p>
<p class="hcp8"><span class="hcp4">Normal</span>
- displayed if the detected average impedance falls in the range between
the low and high limits.</p>
<p class="hcp8"><span class="hcp4">High</span>
- displayed if the detected average impedance rises above the high limit.</p>
<p class="hcp11">Testing LEDs - <span class="hcp3">T</span><span
style="font-size: 10pt; font-weight: normal;">he load can only be
measured when there is adequate output level. &#160;Otherwise the signals
are too small to measure and the testing LED is Off.</span></p>
<p class="hcp11">Impedance Monitor - <span class="hcp3">The average impedance is displayed here.</span></p>
<h1>Signal Path</h1>
<p><img src="AmpSource.GIF" alt="" width="267" height="210" border="0" class="hcp2"> &#160;&#160;&#160;&#160;<img src="Analog&#32;source.GIF" alt="" width="271" height="279" border="0" class="hcp2"> &#160;&#160;&#160;<img src="BluLinkSource.GIF" alt="" width="274" height="279" border="0" class="hcp2"></p>
<p>On this page you can select which input sources are to be processed
and routed to the Amplifier outputs and which sources to route to the
Analogue outputs and the BLU link outputs. &#160;</p>
<p>Scaled Amplifier Outputs 1 and 2 can be routed to both the Analog and
Blu link outputs for monitoring.</p>
<p>PIP outputs 1 and 2 can also be routed to the Analogue and Blu link
outputs. &#160;The PIP outputs are the signals which are presented at
the amplifier inputs.</p>
<p>If routing audio <span class="hcp12">from</span> BLU link
inputs or <span class="hcp12">to</span> BLU link outputs
you must also remember to <a href="PIP-BLU.htm#BLU_link">assign the BLU link output
channels</a>.</p>
<h1>BLU link</h1>
<p class="hcp9">BLU link V2 - <span class="hcp3">The
indicator is On if all devices connected via BLU link have BLU link version
2. &#160;BLU link version 2 has fixed latency.</span></p>
<p class="hcp9">Mastership Priority - <span class="hcp3">The BLU link network requires one device
on the ring to act as master for the whole ring. The master will provide
the clock for all the other devices on the ring. This means that the whole
ring is synchronised to a single audio clock. &#160;Priority can be set
from 0 to 254 with 254 being the highest priority.</span></p>
<p class="hcp9">Sync LEDs - <span class="hcp3">One
of the following LEDs will be lit to show how this device is synchronized:-</span></p>
<p class="hcp13">Error
- <span class="hcp3">This BLU link network is connected
to multiple CobraNet networks</span></p>
<p class="hcp13">Master
- <span class="hcp3">This device is clock master</span></p>
<p class="hcp13">BLU link
In - <span class="hcp3">This device is receiving clock
from the BLU link 'In' connection.</span></p>
<p class="hcp13">BLU link
Out - <span class="hcp3">This device is receiving clock
from the BLU link 'Out' connection.</span></p>
<p class="hcp13">Link
In/Out - <span class="hcp3">Link In is illuminated if
a valid ethernet link is present on the 'In' port. &#160;Link Out is illuminated
if a valid ethernet link is present on the 'Out' port.</span></p>
<p class="hcp13">Valid
In/Out - <span class="hcp3">Valid In is illuminated if
valid BLU link audio is present on the 'In' port. &#160;Valid Out is illuminated
if valid BLU link audio is present on the 'Out' port.</span></p>
<p class="hcp13">Corrected
Counters - <span class="hcp3">The corrected counters show
the number of recoverable bit errors that have occurred.</span></p>
<p class="hcp13">Error
Counters - <span class="hcp3">The error counters show
the number of unrecoverable bit errors that have occurred.</span></p>
<p class="hcp13">Reset
- <span class="hcp3">Resets the counters.</span></p>
<h1>Meters</h1>
<p>The meters display the signal present on the analogue and BLU link inputs
and outputs as well as the amplifier outputs.</p>
<h1>Input Compressor</h1>
<p class="hcp9">Input RMS Meter</p>
<p class="hcp9">Output RMS Meter</p>
<p class="hcp9">Enable - <span class="hcp3">This
button activates or deactivates input compression for the selected channel.</span></p>
<p class="hcp9">Threshold - <span class="hcp3">The
Threshold control sets the level that the input must exceed before compression
is activated.</span></p>
<p class="hcp9">Ratio - <span class="hcp3">The
compression ratio controls the amount of compression that is applied for
each step of input above the threshold. The range of control is 2:1 through
32:1.</span></p>
<p class="hcp9">Attack - <span class="hcp3">The
Attack Time control sets the amount of time it takes to attenuate the
input signal by 20 dB. The range of control is 1 millisecond up to 100
milliseconds.</span></p>
<p class="hcp9">Release - <span class="hcp3">The
Release Time control sets the amount of time it takes to increase the
gain by 20 dB once the input signal has fallen below the Threshold. The
range of control is 10 milliseconds through to 10 seconds.</span></p>
<p class="hcp9">Gain Reduction Meter - <span class="hcp3">This meter displays the amount of reduction
that is occurring in the processing block. This meter does not show any
compression or limiting that is occurring as a result of the output limiters.</span></p>
<p class="hcp9">Compressor Link - <span class="hcp3">The link button links the two channels
of the compressor so that if either channel is in compression the other
channel will also compress. Note this button will not function if one
of the channels of the compressor block is disabled or if the amplifier
is not in Dual mode.</span> &#160;</p>
<h1>Output Limiters</h1>
<p class="hcp9">Peak Voltage Limiter - <span class="hcp3">The Peak Voltage Limiter block allows
you to limit the peak voltage of the output signal through the amplifier.
Each Peak Voltage Limiter section includes:</span></p>
<p class="hcp13">Enable
- <span class="hcp3">Click on this button to turn the
Peak Voltage Limiter on and off.</span></p>
<p class="hcp13">Threshold
- <span class="hcp3">Use this control to set a peak voltage
in volts.</span></p>
<p class="hcp13">Attack
- <span class="hcp3">Set the amount of time after the
voltage threshold is exceeded before limiting takes place. The range for
this control is from 1 to 100 milliseconds</span></p>
<p class="hcp13">Release
- <span class="hcp3">Set the amount of time after the
voltage drops below threshold before limiting is released. The range for
this control is 0.01 to 10 seconds.</span></p>
<p class="hcp13">Gain
Reduction Meter - <span class="hcp3">This meter displays
the amount of peak voltage limiting taking place.</span></p>
<p class="hcp13">Output
Peak Meter - <span class="hcp3">Displays the amplifier
peak output levels. &#160;These are the same meters as on the Main view.</span></p>
<p class="hcp14">RMS Power
Limiter - <span class="hcp3">The RMS Power Limiter block
allows you to base limiting on the average power of the output signal
through the amplifier. The RMS Power Limiter section includes four controls:</span></p>
<p class="hcp13">Enable
- <span class="hcp3">Click on this button to turn the
RMS Power Limiter on and off.</span></p>
<p class="hcp13">Threshold
- <span class="hcp3">Use this control to set a maximum
RMS power in watts. The range for this control is 10 to 10,000 watts.</span></p>
<p class="hcp13">Attack
- <span class="hcp3">Set the amount of time after the
RMS power threshold is exceeded before limiting takes place. This control
has a range from 1 to 30 seconds.</span></p>
<p class="hcp13">Release
- <span class="hcp3">Set the amount of time after the
RMS power drops below threshold before limiting is released. The range
of control is 1 to 30 seconds.</span></p>
<p class="hcp13">Gain
Reduction Meter - <span class="hcp3">This meter displays
the amount of RMS power limiting taking place.</span></p>
<p class="hcp13">Output
RMS Meter - <span class="hcp3">Displays the amplifier
RMS output levels.</span></p>
<p class="hcp14">Limiter
Link - <span class="hcp3">The link button links the two
channels of the limiter so that if either channel is limiting the other
channel will also limit. Note this button will not function if one of
the channels of the limiter block is disabled or if the amplifier is not
in Dual mode.</span> &#160;</p>
<h2>Firmware Loading</h2>
<p>If the firmware version is greater than that currently on PIP BLU, HiQnet
London Architect will automatically detect this when going Online and
will prompt to go through the firmware upgrade process.</p>
<p>The firmware upgrade process can be manually initiated by clicking on
the Load Firmware icon in the Network View: <img src="Load_firmware_icon.jpg" alt="Image:load_firmware_icon.jpg" title="Image:load_firmware_icon.jpg" style="border-width: 2px;
border-style: solid;
margin-top: 0px; margin-bottom: 0px;
margin-left: 0px;
margin-right: 0px;" width="37" height="29" border="2">.</p>
<h2>Changing network settings</h2>
<p>The network settings of the PIP-BLU can be changed in the HiQnet London
Architect Network View. To interact with the PIP-BLU in the Network View,
select it in the network tree and click on one of the Network View icons
show below:</p>
<p><img src="http://web.media.mit.edu/~benb/statics/bssmanual/MAIN/NetworkSettings.PNG" alt="" width="129" height="29" border="0" class="hcp2"></p>
<p>The following operations can be performed by clicking on the Network
View icons (left to right):</p>
<ul>
<li class="p"><p class="hcp15">Locate the device on the
network</p></li>
<li class="p"><p class="hcp15">This is greyed out. &#160;PIP
BLUs cannot be rebooted from London Architect.</p></li>
<li class="p"><p class="hcp15">Change the device's settings:</p></li>
<li style="list-style: none; display: inline;"><ul>
<li class="p"><p class="hcp15">Change the device name
(Note: a unique name should be given to each PIP-BLU in the system)</p></li>
<li class="p"><p class="hcp15">Change the device HiQnet
address - not supported for Crown amps.</p></li>
<li class="p"><p class="hcp15">Configure the device
to use AutoIP or DHCP addressing</p></li>
<li class="p"><p class="hcp15">Configure the device
to use manual IP address settings</p></li>
</ul></li>
<li class="p"><p class="hcp15">Automatically add network
devices to the design</p></li>
<li>Upload firmware to devices on the network</li>
</ul>
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