LEXICON STUDIO V1.20 ADDENDUM
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This file contains information that could not be included in the
User's Manual before shipping the current version of the Core2 card.
The following topics are discussed (by category):

	LexPanel issues:
		Addendum #1: NEW USER INTERFACE FEATURES
		Addendum #2: AUXILIARY SENDS AND RETURNS
		Addendum #3: TEXT ENTRY OF FADER VALUES
		Addendum #4: LEVEL ON EXTERNAL OUTPUT WHEN CLOSING 
		             LEXPANEL

	Cubase issues:
		Addendum #5: ROUTING IN CUBASE	
		Addendum #6: PUNCH ROUTING IN CUBASE
		Addendum #7: CLOCK SOURCE CONSISTENCY IN CUBASE

	Wave (Multimedia I/O) issues:
		Addendum #8: THE EFFECT OF ROUTING CHANGES ON WAVE 
		             DRIVERS
		Addendum #9: SELECTION OF WINDOWS SOUNDS
		Addendum #10: CLOCK SOURCE SELECTION IN MMIO
		Addendum #11: MMIO BUS ALIGNMENT IN ACID AND COOL
		              EDIT PRO

	Samplitude issues:
		Addendum #12: NOISES THAT OCCUR AFTER SHUTDOWN OF 
		             SAMPLITUDE

	Other issues:	
		Addendum #13: S/PDIF EFFECTS LOOP

In addition, at the end of this file there is a list of errors in the
User's Manual that were detected at the last minute.

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Addendum #1: NEW USER INTERFACE FEATURES

<MESSAGES>
A message will warn the user that undesirable noise could occur if 
input channels are opened from an audio group that does not conform 
to the selected clock source.
  
Example: S/PDIF inputs routed with an Internal clock source will 
cause a warning message to appear.

NOTE: clock source warning message will appear based on the currently
open input channels, regardless of which channels are currently 
routed (an open input channel is a channel playing audio). When the 
monitor button is active, however, all routed channels are open, and 
not just those channels selected for punch.  Therefore, you might 
receive a warning message that pertains to input channels that you do
not actually intend to use, just because the monitor button is 
selected.

<GREEN LEDS & CHECKBOX OPTIONS>
Indicate whether or not there is a valid clock source and sample 
rate.  The two check boxes allow the user the option to turn on/off 
the pop-up messages about lost and regained word clock, as well as 
changes in the sample rate (which is now displayed for the user's 
reference). The messages are there purely for the user's convenience.
Core-2 will lock and change sample-rates without the user hitting OK. 

<CLOCK SOURCE LIST>
Certain clock source selections will not be available based on the 
current I/O routing.

Example: Routed S/PDIF inputs disallow selection of WC RCA and ADAT
data clock sources. Routed ADAT inputs disallow the selection of 
S/PDIF clock source.

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Addendum #2: AUXILIARY SENDS AND RETURNS

The Auxiliary Send / Return selections in the Core-2 Tab are not 
available in V1.20 These selections have been placed here for future
upgrades, and are not connected to anything.

NOTE: If the Auxiliary selections are enabled, 4 digital streams 
will be not be available for audio. Until these upgrades are made 
available, please leave the auxiliaries in the panel disabled.

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Addendum #3: TEXT ENTRY OF FADER VALUES

If you type in a value under the Mix output fader or the analog input
faders, audio level will update with the text entry in real time. 
Please lower speaker levels when entering levels in these text boxes,
or use the faders on the panel instead.

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Addendum #4: LEVEL ON EXTERNAL OUTPUT WHEN CLOSING LEXPANEL

Sometimes when closing the LexPanel you may notice constantly high
level of an inaudible DC signal on S/PDIF input of your digital mixer.
To eliminate this DC signal, send audio to the S/PDIF output or 
close the LexPanel.

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Addendum #5: ROUTING IN CUBASE
	
When a song or arrangement is saved in Cubase, all bus and FX settings
are also stored. If changes are made to the Routing tab in the Lexicon 
control panel, Cubase will see the ASIO driver as a new device and 
clear all the bus and FX settings that were saved. Because of this,
it is a good idea to make a note of which I/O streams you were using 
when you saved your song and to reset the Routing tab to match this 
configuration before reloading the song. In this way you can avoid 
manually rerouting audio and effects.

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Addendum #6: PUNCH ROUTING IN CUBASE

When using an ASIO application (such as Cubase), the available 
sources and destinations of Punch are those which are enabled 
(active) in Cubase. If, for example, you wish to route audio from the
Core2 A/D 1&2 to the Core2 D/A 1&2 you must activate the 
corresponding input and output bus in Cubase. The Lexicon control
panel must be exited, then re-launched each time a change is made to
Cubase's active streams list.

When using the Wave drivers, if the Monitor button is turned on all 
channels will be available for selection in the Punch and Reverb 
source/destination lists. When the wave audio application is in play,
only the channels that it is using will be available to Punch and 
Reverb routing. The same applies if the audio application has been
configured so that it keeps its audio channels open even when it is 
in stop (see the specific application's User Guide for details on how
to set this up). When there is no audio application running, or the 
application is in "stop" and has not been configured to keep the 
audio channels open, all channels will be available to punch routing. 

=====================================================================
Addendum #7: CLOCK SOURCE CONSISTENCY IN CUBASE

Whenever changing the clock source setting within Cubase, it is a
good practice to verify that the identical setting is selected in
the LexPanel clock source tab at that time.  Any differences in these
settings could result in undesirable static.  If such a condition 
should occur, simply invoke the LexPanel from the task bar, and
Lexicon Studio will internally correct this problem.

=====================================================================
Addendum #8: THE EFFECT OF ROUTING CHANGES ON WAVE DRIVERS

If you are using the Wave drivers and make any changes to the Routing
Tab in the Lexicon control panel, you MUST restart Windows in order
to have these changes take effect. If the ASIO drivers are being used,
it is not necessary to restart Windows. Simply quit then re-launch the
audio application in order for the routing changes to take effect.
If you are using Cubase, for example, and see that some of the Input
or Output buses have a blank label, this is an indication that the
application must be restarted. If you are using Cubase and have 
launched the Lexicon control panel from the Windows Taskbar, Cubase
must be quit before changes can be made to the Routing tab. 

Note: at least one Input pair and one Output pair must be enabled
in order to launch Cubase. If no streams are active an error message
will come up saying that the ASIO Lexicon Studio Core-2 1.2 driver 
could not be loaded. If this occurs, quit Cubase, launch the LexPanel
from the Windows Taskbar, turn on one or more I/O streams, then 
re-launch Cubase.

=====================================================================
Addendum #9: SELECTION OF WINDOWS SOUNDS

As a high-performance audio card, the Core2 is designed for use with
sample rates of 44.1 kHz and 48.0 kHz frequencies.  Because most wave
files that are installed with the Windows operating system are
formatted at the 22 kHz or 11 kHz sampling rate, the Core2 may not play
such wave files in a desirable fashion.  It is recommended that you
assign the PC's native sound card to the task of playing Windows
sounds by making it the "preferred" device in the Multimedia Control
Panel applet.  In that way, there will be no conflicts while Windows
sounds are being played, even while you are using the Core2 in an
audio application.

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Addendum #10: CLOCK SOURCE SELECTION IN MMIO

After changing the clock source from the LexPanel, be sure to shut
down then re-start any applications that are using wave audio at the
time.  This action will guarantee that the application correctly
recognizes the current clock source selection.

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Addendum #11: MMIO BUS ALIGNMENT IN ACID AND COOL EDIT PRO

It has been observed that occasionally the first output bus can be 
out of alignment with the rest of the output buses in Acid and Cool
Edit Pro. This seems to be setting related: adjusting the number and
size of the audio playback buffers can help fix the problem. Another
work around is to put 2 dummy tracks at the top of your arrangement
and assign them to some outputs that you are not using.

=====================================================================
Addendum #12: NOISES THAT OCCUR AFTER SHUTDOWN OF SAMPLITUDE

It has been found that in order to release channels in SAMPLITUDE
for Lexpanel or other applications to use, the "Close all audio 
devices" selection must be selected before quitting the 
Samplitude audio application.  If this is not done manually by you
prior to shutdown, an undesirable noise might result.

=====================================================================
Addendum #13: S/PDIF EFFECTS LOOP

It is possible to use the Core2 as the sample clock master in an 
SPDIF effects loop. In this configuration the Core2 SPDIF output is 
sent to external effects gear and output from this gear drives the 
Core2 SPDIF input. The Core is set to be the sample clock master for 
the SPDIF interface by selecting the internal oscillators or the ADAT
input. The external effects gear should be set to derive the sample
clock from the SPDIF input or alternately from a sample clock source
that is synchronized to the Core2. In this configuration we recommend
muting the SPDIF inputs to the Core2 before connecting or 
disconnecting the SPDIF input to the Core2 to avoid clicks while 
monitoring. When the Core2 is set up to derive its sample clock from
the SPDIF input this precaution is not necessary since the SPDIF 
input is automuted when the input cable is disconnected.

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CORE2 USER'S GUIDE ERRATA
                             
All references to "Cool Edit Pro" should be "Cool Edit Pro SE"

Page 5: Referencing the ADAT connectors, ADAT IN is closest to the
	DB-25 connector.

Page 9: At the end of the installation procedure, step #7 instructs
	you to "cold boot" your computer even though the message that
	appears simply asks you to restart.  In fact, a "warm boot" or
	simple restart is all that is required.

Page 11: The statement that sample rate is selectable from the
	LexPanel is not accurate.  On the clock source page, the
	current sample rate is displayed but not selectable.

Page 12: The note at the bottom of the page refers to an error message
	that pertains to ASIO Lexicon Studio v4.20 (for the Core32).

Page 17: Change "Punch from the LSI-10T A/D 1&2 to LDI-10T D/A 1&2" to
	"Punch from the Core2 A/D 1&2 to Core2 D/A 1&2"

Page 18: Figure does not accurately represent Clock Source Tab.