Oxmoor DEQ-1 User Manual
DEQ-I™ & DEQ-II
HIGH-RESOLUTION
PROGRAMMABLE EQUALIZERS
™
Installation
&
Operation
Manual
TABLE OF CONTENTS
DEQ-I & DEQ-II INTRODUCTION ...................................................................................................... 1
DEQ-I & DEQ-II QUICK REFERENCE ................................................................................................. 1
DEQ-I QUICK REFERENCE .............................................................................................................. 2
DEQ-II QUICK REFERENCE ............................................................................................................. 3
DEQ-II QUICK REFERENCE (CONTINUED) ....................................................................................... 4
DEQ-II QUICK REFERENCE (CONTINUED) ....................................................................................... 5
DEQ-II QUICK START TUTORIAL ...................................................................................................... 6
DEQ-II QUICK START TUTORIAL (CONTINUED)................................................................................ 7
DEQ-II QUICK START TUTORIAL (CONTINUED)................................................................................ 8
DEQ-II EQUALIZE MENU ................................................................................................................. 9
DEQ-II EQUALIZE MENU (CONTINUED) .......................................................................................... 10
DEQ-II EQUALIZE MENU (CONTINUED) .......................................................................................... 11
DEQ-II EDIT MENU......................................................................................................................... 12
DEQ-II EDIT MENU (CONTINUED) .................................................................................................. 13
DEQ-II UTILITY MENU .................................................................................................................... 14
DEQ-II UTILITY MENU (CONTINUED) ............................................................................................. 15
DEQ-II UTILITY MENU (CONTINUED) ............................................................................................. 16
SYSTEM SECURITY ....................................................................................................................... 17
DEQ-I & II MULTI-UNIT SYSTEM ..................................................................................................... 18
DEQ-I & DEQ-II MULTI-UNIT SYSTEM (CONTINUED) ....................................................................... 19
DEQ-I & DEQ-II MULTI-UNIT SYSTEM (CONTINUED) ....................................................................... 20
DEQ-I & DEQ-II MULTI-UNIT SYSTEM (CONTINUED) ....................................................................... 21
DEQ-I INTERNAL CONTROLS .........................................................................................................22
DEQ-I INTERNAL CONTROLS (CONTINUED) ................................................................................... 23
APPENDIX A: HARDWARE INTERCONNECTION DETAILS ................................................................ 24
APPENDIX B: ERROR MESSAGES ................................................................................................... 25
APPENDIX C: CHARACTER SET ...................................................................................................... 25
APPENDIX D: GLOSSARY ............................................................................................................... 26
APPENDIX E: DEQ-I DISPLAY CODES ............................................................................................. 27
APPENDIX F: PRESET SELECT TALLY ............................................................................................. 28
INSTALLATION & SET-UP NOTES ................................................................................................... 29
INSTALLATION & SET-UP NOTES...................................................................................................30
DEQ-I & DEQ-II SPECIFICATIONS ...................................................................................................31
OXMOOR FACTORY SERVICE ......................................................................................................... 32
OXMOOR TWO YEAR LIMITED WARRANTY ..................................................................................... 32
CONTACT OXMOOR ....................................................................................................................... 32
DEQ-I & DEQ-II INTRODUCTION
There are two versions of the DEQ equalizer.
The DEQ-II is a two rack-space device. Its sophisticated
control panel includes a number of buttons for parameter
entry and a large LCD display that provides setting and
status information. The single-channel, 29-band DEQ-II
offers 1/3–octave filters and second–order high-pass and
low-pass filters, selectable on 1/6–octave frequency spacings. Filter settings are stored in any of eight nonvolatile,
programmable memories called PRESETS. The contents
of a PRESET can be modified by either the DEQ-II’s own
control panel, or by a remote controlling device, such as
DEQ-I & DEQ-II QUICK REFERENCE
TERMS USED
PRESET: One of the 8 groups of settings that completely
configure the equalizer and defines how it will process
audio.
PRESET PORT: A 15–pin D-sub connector on the back
panel through which Presets may be selected.
COMMUNICATIONS PORT: The 9–pin D-sub (INPUTmale), (OUTPUT-female) PA-422 connectors on the back
panel that are used for serial communication with other
equalizers, a PC or another PA-422 control device.
an IBM compatible, Macintosh, or another DEQ-II.
Once a PRESET has been set, it can be locked to prevent tampering.
Like the DEQ-II, the DEQ-I is a single-channel, 29-band,
1/3-octave graphic EQ with 2nd-order high-pass and
low-pass filters. Filter settings are stored in 8 programmable PRESETS. The DEQ-I is a one rack-space device
without a control panel. Programming is accomplished
either through the DEQ-I’s COMMUNICATIONS
PORT (using a PC, a DEQ-II or some other PA-422 control device) or through the DEQ-I’s internal controls.
EQUALIZATION CURVE (or simply, CURVE): A term
describing the collection of filter settings (bandpass,
high-pass, and low-pass) that completely define how
the equalizer will process audio. (See PRESET at left.)
ACTIVE PRESET: The Preset that currently has control of the audio.
ACTIVE FILTER BAND: The filter band which is currently addressed by the cursor and for which the slider
may be adjusted.
HARDKEYS: Those buttons on the front panel of the
DEQ-II whose functions are constant. Hardkeys have
labels screened on the front panel.
SOFTKEYS: The buttons on the front panel of the DEQ-II
whose functions change depending on the menu.
STATUS AREA: The portion of the LCD display dedicated
to displaying the present state of equalizer function.
CURVE AREA: The portion of the LCD display dedicated
to displaying the “Active Preset” curve.
SOFTKEY/MESSAGE AREA: The portion of the LCD display dedicated to displaying the Softkey labels and messages. This area also displays DEQ TITLE and PRESET
name information.
LOGGING ON: Term which describes the act of gaining control of a DEQ-II through its front panel; accomplished by selecting a Main Menu key and (possibly)
giving a Password.
LAST EQUALIZER RECALL: Function similar to “last
channel recall” of a television remote control; switches
between last two active equalizers.
ADDRESS SELECTOR: An 8-position dip-switch
which sets the PA-422 address of the equalizer. Note:
This address must be unique for each equalizer in the system.
BAND CURSOR: A solid “bar” that overlaps the slider
“slot” of the “Active Filter Band;” denotes the Active
Filter Band.
Page 1
DEQ-I DESCRIPTION
(Callouts refer to Figures 1.0 and 1.1)
DEQ-I QUICK REFERENCE
1. POWER on LED is illuminated when the unit is on.
2. SIGNAL-presence LED is illuminated when a signal
above -40 dBu is present at the unit's output.
3. PEAK LED is illuminated when an output level of 17
dBu is reached.
4. LED DISPLAY - A seven-segment LED Display that
displays the active Preset number.
5. INPUT CONNECTOR - XLR input, Pin 2 positive,
accepts balanced or unbalanced signals from line-level
audio devices.
6. OUTPUT CONNECTOR - XLR output, pin 2 positive, accommodates balanced or unbalanced lines.
7. PRESET SELECT - Female, 15–pin D-sub connector.
Provides for connection of external switches for remote
Preset selection. Momentary contact closures required.
8. PA-422 OUT - Female, 9–pin D-sub connector. It is
used to carry the PA-422 data to the next equalizer's PA422 IN or to another PA-422 device.
9. PA-422 IN - Male, 9–pin D-sub connector. This port is
connected to the PA-422 OUT of another equalizer, a Personal Computer, or a controller with PA-422 output.
10. PA-422 ADDRESS - A selector switch that is used to
assign an address to the equalizer when connecting two
or more equalizers together to form a network.
11. FUSE HOLDER - Replace only with approved type
of fuse in a rating appropriate to the mains voltage, as
indicated on back panel. (See SPECIFICATIONS).
12. POWER CONNECTOR - Standard IEC 3-pin connector for AC power cord. Use only with grounded (3wire) outlets. Cord sets are available for all world connection standards.
13. CHASSIS GROUND - A screw with a star washer
enables the installer to secure a ground wire to the
chassis.
3
2
1
OXMOOR
MADE IN USA BY
OXMOOR CORPORATION
BIRMINGHAM, ALABAMA
PUSH
INPUT
5
DEQ-I HIGH RESOLUTION PROGRAMMABLE EQUALIZER
PEAK
SIGNAL
POWER
STATUS LEDs
Figure 1.0: Front Panel View of DEQ-I
AUDIO CONNECTORS
OUTPUT
6
PRESET SELECTPIN 2 POSITIVE ON ALL
7
Figure 1.1:
Rear Panel View of DEQ-I
PA-422 OUTPUT
8 9
PA-422 INPUT
PA-422 ADDRESS
128643216842
ON
1
10 11
PRESET
4
FUSE
POWER
12
CHASSIS
SERIAL NUMBER
13
Page 2
DEQ-II DESCRIPTION
(Callouts refer to Figures 1.2 and 1.3)
DEQ-II QUICK REFERENCE
SIGNAL STATUS LEDs:
1. POWER on LED is illuminated when the unit
is on.
2. SIGNAL-PRESENCE LED is illuminated
when a signal above -40 dBu is present at the
unit's output.
3. PEAK LED is illuminated when an output
level of 17 dBu is reached.
LCD DISPLAY - A large backlit display that gives a
graphic representation of the active curve and immediate information on the status of the equalizer. The
LCD display also defines the functions that the
Softkeys perform.
CURSOR KEYS - Buttons which are used for selecting
and adjusting values and editing text.
SELECT BUTTONS:
7. EDIT - This menu allows:
Logging on to the equalizer
Copying and Pasting of equalization curves
Clearing equalization curves stored in Presets
Naming the Presets
Locking and Unlocking Presets
Bypassing and inserting the Equalizer
Setting Preset Titles
8. UTILITY - This menu allows:
Logging on to the equalizer
Logging Off (terminating an equalization session)
Setting Passwords
Adjusting the contrast of the display
Turning off the display light
Naming the equalizer
SOFTKEYS - These buttons are used to select an action available when you are in EQUALIZE, EDIT, or
UTILITY mode. The function each Softkey performs
may change depending on which menu has been accessed.
4. DEQ - Accesses the DEQ select menu. In this
mode, select the desired equalizer using the Cursor keys.
5. PRESET - Accesses the Preset mode. In this
mode you can select the desired Preset by using
the Cursor keys. Use the UP and DOWN Cursor
keys to select one of eight Presets.
HARDKEYS - These buttons perform dedicated functions as labeled on the front panel.
MENU Buttons - There are three menus which control
all functions. Selection of each is confirmed by the illumination of an adjacent LED.
6. EQUALIZE - This menu allows:
Logging on to the equalizer
Adjusting filter settings
Adjusting High- and Low-pass Filters
Adjusting equalizer gain
BACK PANEL FEATURES:
9. INPUT CONNECTOR - Female, XLR connector,
pin 2 positive, accepts balanced or unbalanced
signals from line-level devices.
10. OUTPUT CONNECTOR - Male, XLR connector,
pin 2 positive, accommodates balanced or unbalanced lines.
11. PRESET SELECT - Female, 15–pin D-sub connector. Provides for connection of external
switches for remote Preset selection. Momentary
contact closures required.
12. PA-422 OUT - Female, 9–pin D-sub connector. It
is used to carry the PA-422 data to the next
equalizer's PA-422 IN or to another PA-422 device.
13. PA-422 IN -Male, 9–pin D-sub connector. This
port is connected to the PA-422 OUT of another
equalizer, a Personal Computer, or a controller
with PA-422 output.
Page 3
DEQ-II QUICK REFERENCE (CONTINUED)
14. PA-422 ADDRESS -A selector switch that is
used to assign an address to the equalizer when
connecting two or more equalizers together to
form a network.
15. FUSE HOLDER - Replace only with approved
type of fuse in a rating appropriate to the mains
voltage, as indicated on back panel. (See SPECIFI-
CATIONS).
SIGNAL STATUS
®
DEQ-II High Resolution Programmable Equalizer
BYPASS
PEAK
SIGNAL
POWER
LCD DISPLAY
MUTE TITLELOCK
16. POWER CONNECTOR - Standard IEC 3-pin
connector for AC power cord. Use only with
grounded (3-wire) outlets. Cord sets are available for all world connection standards.
17. CHASSIS GROUND POST - A screw with a
star washer enables the installer to secure a
ground wire to the chassis.
CURSOR KEYS
SELECT
BUTTONS
DEQ
1
PRE
1
1 kHz
0 dB
OUT
OUT
ENTER
CURSOR SELECT MENU
HARD KEYS
DEQ
PRESET
MENU
BUTTONS
EQUALIZE
EDIT
UTILITY
3
2
1
OXMOOR
MADE IN USA BY
OXMOOR CORPORATION
BIRMINGHAM, ALABAMA
PUSH
INPUT
9
OUTPUT
10
AUDIO CONNECTORS
SOFTKEYS
Figure 1.2: Front Panel View of DEQ-II
PRESET SELECTPIN 2 POSITIVE ON ALL
11
PA-422 OUTPUT
12
PA-422 INPUT
13
Figure 1.3: Rear Panel View of DEQ-II
PA-422 ADDRESS
128643216842
ON
14
4
5
6
7
8
CHASSIS
1
FUSE
POWER
15
SERIAL NUMBER
1716
Page 4
DEQ-II QUICK REFERENCE (CONTINUED)
SOFTKEY &
MESSAGE AREAS
DEQ-II LCD DISPLAY LAYOUT
(Callouts refer to Figure 1.4)
1
CURVE AREA
2
BYPASS
Figure 1.4: LCD LAYOUT
MUTE TITLELOCK
STATUS AREA
3
OUT
ENTER
DEQ
PRE
25 Hz
0 dB
OUT
6
5
4
1
8
8
9
7
The LCD display information is organized into three
main sections, as shown in Figure 1.4. These sections
are: The Softkey/Message Area , the Curve Area, and
the Status Area.
SOFTKEY/MESSAGE AREA: This area is used to label the Softkeys (i.e., identify the Softkey functions)
and to display messages, such as error announcements. The Softkey/Message Area is also used, depending on the action being performed, to display and
allow editing of the Name, Title, or Passwords of the
equalizer.
THE CURVE AREA: Gives a quick graphical view of
the filter settings for the Active Preset. While the
graduations allow an estimation of the actual setting
for any given band, the Status Area will display the
exact setting.
1. Each "slug" represents a Bandpass Filter setting. The Bandpass Filters may be adjusted in
1/2 dB steps over a ±12 dB range.
2. This is the Band Cursor, a solid "bar" that
overlaps the slider "slot" of the "Active Filter
Band." It denotes the Active Filter Band.
3. This area represents the output gain slider.
Adjustable in 1/2 dB steps over ±12 dB range.
STATUS AREA: Provides information about the current operational state of the equalizer. In particular:
4. Displays the number (address) of the Active
equalizer. This is the equalizer with which the
controlling DEQ-II is currently communicating.
5. Displays the number of the active Preset.
6. Displays the center frequency of the Active
Bandpass Filter.
7. Displays the setting of the Active Bandpass
Filter, or Gain control.
8. Displays the setting of the Low-Pass Filter.
9. Displays the setting of the High-Pass filter.
NOTE: Back-light will time out; see page 18.
Page 5
DEQ-II QUICK START TUTORIAL
CAUTION: If you set a Password, you must use it
to address the DEQ. It is best not to set a Password
until your equalization session is over.
This section allows a first-time user to quickly and
efficiently begin using the basic (and more frequently
used) functions of the equalizer. The procedure described below assumes that you have just one DEQII, and that it has not been programmed or modified
since it left the factory. This ensures that none of the
Presets have been Locked and no Passwords have
been set. Locking Presets and setting Passwords are
advanced topics that are covered in detail in later
chapters.
TURNING ON THE EQUALIZER
Apply power to the unit. There is no on/off switch;
simply plug the equalizer in. After a few seconds,
the Oxmoor logo will be displayed. Several seconds
later, the Oxmoor logo will be replaced by the Active
Preset curve, which will have (if the equalizer has
not already been adjusted) all sliders set to 0 dB. The
DEQ address (shown in line 1 of the Status Area)
should be 1, and the Preset number (shown in line 2
of the Status Area) should be 1. The bottom line of
the display (i.e., the Softkey/Message Area) should
be displaying: PRESET:
Since this preset currently has no Title, Figure 1.5
shows the LCD display as it should appear at this
point. Note that none of the Main Menu LED indicators are lit. This is because you are not “logged on”
to the unit.
DEQ
1
PRE
1
1 kHz
0 dB
OUT
OUT
LE
ENTER
CURSOR SELECT MENU
DEQ
PRESET
EQUALIZE
EDIT
UTILITY
Figure 1.6: Main Menu Buttons
Figure 1.7 shows what the display should now look like.
Notice that the Softkey/Message Area now displays a
number of labels above the Softkey buttons. Each label
defines the function that the Softkey performs. If a label is
in reverse-video it indicates that the softkey under that
label can be used at this time. Normal-video labels indicate
functions that are currently unavailable (but may be
available later in the session, depending on the action
performed). At this point, the labels LOCK, BYPASS,
MUTE, and TITLE are all in reverse-video and ENTER is
in normal-video. Also, note that the 25 Hz bandpass filter
slider is now in reverse-video and the Status Area has
been updated to give the bandpass filter information. A
1
DEQ
8
PRE
25 Hz
0 dB
OUT
OUT
BYPASS
MUTE TITLELOCK
ENTER
DEQ 0
PRE 1
OUT OUT
PRESET:
Figure 1.5: Start-Up Screen
LOGGING ON TO THE EQUALIZER
To log on to the equalizer, press any one of the three
Main Menu buttons, (see Figure 1.6). Any one of the
Main Menu buttons will log you on to the equalizer,
but for this exercise, press the Equalize Menu button.
If you inadvertently pushed the EDIT or UTILITY
buttons, that’s OK. Simply push the Equalize button.
Figure 1.7: Equalize Menu Screen
slider in reverse-video, called the “Band Cursor”, indicates
the Active Filter Band, that is, the band that can currently
be adjusted. You are now logged on and may begin using
the equalizer. Note: The Preset Select connector on the
rear of the DEQ is disabled when you are "logged on.”
CHANGING MENUS
Before describing how to change the filter settings let's
become a little more familiar with the menus. You should
currently be in the EQUALIZE menu (the Equalize Menu
LED indicator should be on). Now, change to the EDIT
menu by pressing the EDIT menu key (see Figure 1.8).
Notice that the Softkey/Message Area has been changed
so that the menu options available in this menu are
displayed.
(Continued on next page)
Page 6
DEQ-II QUICK START TUTORIAL (CONTINUED)
DEQ
1
1
PRE
OUT
OUT
PASTE
CLEAR TITLECOPY
ENTER
Figure 1.8: Edit Menu Screen
Also note that the LED indicator beside the Menu key
you pushed is now lit, and the EQUALIZE Menu key
indicator is no longer lit.
Finally, note that none of the filter sliders are now in
reverse-video, and the sections of the Status Area which
give frequency and setting information have been erased.
This denotes that there is no Active Filter Band, hence,
no band may be adjusted. Filter sliders (and high-pass
and low-pass filters) may be adjusted only while in the
EQUALIZE menu.
Now, change to the UTILITY menu by pressing the
UTILITY menu key (see Figure 1.9). Notice that the only
changes are that the appropriate Menu indicator is now
lit and the Softkeys have been relabeled. Finally, go back
to the EQUALIZE menu by pressing the EQUALIZE
menu key. Once in EQUALIZE, you may begin adjusting
the sliders.
Filter Band frequency and slider position) has been
updated to reflect this change. Continue pushing the
UP and DOWN cursor keys to adjust the slider until
you are comfortable with the action of the keys and the
repeat rate. Notice that each time the UP or DOWN
cursor key is pressed, the Status Area is updated. Now,
let's change the slider settings in some other bands.
CHANGING THE ACTIVE FILTER BAND
To make another frequency band become the Active
Filter Band, press the RIGHT cursor key. Observe that
the Band Cursor has moved one position to the right,
and that the Status Area has been updated. Push the
RIGHT button several more times. Now push the
LEFT cursor key and notice that the Band Cursor has
moved back one position to the left. Each time the
LEFT or RIGHT cursor key is pressed the Band Cursor
moves and the Status Area is updated. Continue to use
the LEFT and RIGHT cursor keys to change the Active
Filter Band and make slider adjustments using the UP
and DOWN keys until you feel familiar with the
function. Now, move the Band Cursor until it rests on
the 16 kHz frequency band. Push the RIGHT cursor
key one time and notice that the Band Cursor has
skipped over the right graduation and now rests on
the GAIN band. The Gain slider may be adjusted exactly
like the bandpass filter sliders. Now, press the LEFT
cursor key once and notice that the Band Cursor again
rests on the 16 kHz band. Finally, push the RIGHT
cursor key one more time so that the Band Cursor
again rests on the GAIN band. We may now learn how
to adjust the high-pass and low-pass filters.
DEQ 1
PRE 1
OUT
OUT
LOG OUT
PASSWRD
DISPLAY NAME
ENTER
Figure 1.9: Utility Menu Screen
ADJUSTING THE SLIDERS
While in the EQUALIZE menu, it is possible to adjust
the slider position. To adjust the active slider (the slider
that is in reverse-video) push the UP or DOWN cursor
key. Notice that each push of the button changes the
level in 0.5 dB increments. If the button is held, it will
begin to repeat just like a computer's keyboard.
Notice that the slug in the Active Filter Band has moved,
and that the band information in the Status Area (Active
ADJUSTING HIGH-PASS & LOW-PASS FILTERS
The high- and low-pass filters are accessed just like the
bandpass filter bands, by using the LEFT and RIGHT
cursor keys to move the Band Cursor to the desired
band. With the Band Cursor resting on the GAIN band,
push the RIGHT cursor key one time. Notice that the
line in the Status Area that displays the high-pass filter
setting is now in reverse-video, which indicates that
the high-pass filter is now the Active Filter Band and
may be adjusted by using the UP and DOWN cursor
keys. Use the Up and DOWN cursor keys to adjust the
high-pass filter band. Now, push the RIGHT cursor
key one time and observe that the Band Cursor now
rests on the low-pass filter. Adjust the low-pass filter
with the UP and DOWN cursor keys.
Push the RIGHT cursor key once and notice that the
Band Cursor moves to the 25 Hz frequency band. The
Band Cursor “scrolls” in this fashion in both directions.
For instance, pushing the LEFT cursor key puts the
Band Cursor back on the low-pass filter band.
Page 7
DEQ-II QUICK START TUTORIAL (CONTINUED)
Continue practicing selecting and adjusting the filters
until you are comfortable with the action of the cursor
keys. If you are processing audio you will hear the effects
of the changes as you make them.
CHANGING PRESETS
So far we have only been making adjustments to one
Preset, in this case, Preset 1. This section will describe
how to access the other Presets so that adjustments may
be made to them.
You may change Presets from within any of the main
menus. To do so, simply push the Preset Select button as
shown in Figure 1.10.
DEQ
1
PRE
1
1 kHz
0 dB
OUT
OUT
E
ENTER
CURSOR SELECT MENU
DEQ
PRESET
EQUALIZE
EDIT
UTILITY
information is displayed in the Status Area). As usual,
the Softkey labels indicate the action that will be
performed if the corresponding Softkey is pressed. Press
the Softkey labeled "PRE 2" now. Notice that the Active
Preset is now Preset 2 as displayed in the status area (line
2). Also, notice that you have returned to the menu that
you were in when you pushed the Preset Select button
and that the Softkey have been given labels appropriate
for that menu. Now, reenter Preset Select mode by
pressing the Preset Select button. The screen should
1
DEQ
2
PRE
OUT
OUT
PRE 6 PRE 7 PRE 8PRE 5
CANCEL
CANCEL
Figure 1.12: Presets 5 though 8
Figure 1.10: Preset Select
The LCD display should appear as shown in Figure 1.11
(if the DEQ is set to Preset 1). Note that the Softkey label
for the Active Preset (Preset 1 ) is in normal-video while
the other labels are in reverse-video. This serves as an
indication of the Active Preset number (the same
DEQ 1
PRE 1
OUT
OUT
Title:
()
ENTER
Figure 1.11: Presets 1 through 4
again appear as in Figure 1.11 except that the PRE 2
Softkey is now in normal-video indicating that Preset 2 is
the Active Preset. Note that only Preset 1 through 4 are
currently accessible. To access Preset 5 through 8 press
the Softkey labeled MORE and note that the Softkeys
have been relabeled as "PRE 5", "PRE 6", "PRE 7", "PRE
8", and "CANCEL", as shown in Figure 1.12.
If you decide not to change Presets simply push
"CANCEL" and you will be returned to the menu you
were in before you entered Preset Select mode.
To summarize the procedure for changing Preset:
1. Enter the Preset Select mode by pressing the Preset
Select key.
2. Push the Softkey that is labeled with the number of
the Preset to which you wish to change.
3. Push the Softkey labeled "MORE" to access Preset 5
through 8 and press "CANCEL" to exit Preset Select
mode without changing Presets.
Page 8
DEQ-II EQUALIZE MENU
TERMS USED
EQUALIZATION CURVE (or simply, CURVE):
A term describing the collection of filter settings
(bandpass, high-pass, or low-pass) that completely
define how the equalizer will process audio
REVERSE-VIDEO: Light characters on a dark
background
NORMAL-VIDEO: Dark characters on a light
background
SYSTEM PASSWORD: The password that
permits the highest level of access
TITLE: The name of a Preset
EQUALIZE MENU SCREEN and
EQUALIZE MENU SOFTKEY EXPLANATIONS
Described below are the functions of the Softkeys in
the EQUALIZE menu. Step-by-step examples of how
to use each function are included.
USING LOCK/UNLOCK
1
DEQ
8
PRE
25 Hz
0 dB
OUT
OUT
BYPASS
MUTE TITLELOCK
ENTER
1
DEQ
L1
PRE
OUT
OUT
BYPASS
MUTE TITLEUNLOCK
ENTER
Figure 2.1: Preset Lock
action that Softkey performs (see Figure 2.1). Also notice
that the Band Cursor has disappeared and the
frequency and setting information has been erased
from the Status Area to indicate that you may no longer
alter this Preset. Finally, note that the letter “L” appears
beside the Active Preset number in the Status Area. An
“L” in this location indicates that the Preset is LOCKed
and may not be modified without being UNLOCKed
by someone with the proper password.
To UNLOCK a LOCKed Preset simply press the
UNLOCK Softkey (provided the label for this Softkey is
in reverse-video; i.e., the function is available). The
Band Cursor and frequency and setting information
should return and the “L” should disappear from the
Status Area. Also, the function of the UNLOCK Softkey
should now be LOCK. The Preset may again be
modified as desired.
Figure 2.0: EQUALIZE Menu Screen
The LOCK/UNLOCK function allows a user with the
System Password to prevent modification of selected
Presets. Any number of Presets in any combination
may be LOCKed, provided the user has entered the
correct System Password (If the equalizer does not
have a password set, the LOCK/UNLOCK function is
available to anyone). To see how LOCK/UNLOCK is
used, enter the EQUALIZE menu by pressing the
EQUALIZE menu key. The Softkey labels should be
LOCK, BYPASS, MUTE, TITLE, and ENTER. All but
ENTER should be in reverse-video, indicating that
they may be used at this time.
Now, press the LOCK Softkey. You should see that
the function of the LOCK Softkey changes to
UNLOCK, which means that UNLOCK is now the
NOTE: If the system has been secured with passwords
then you may not have access to the LOCK/UNLOCK
function, depending on the level of the Password you
entered when logging on (see Chapter 5, System
Security). Only users with the System level password
may lock or unlock Presets.
USING BYPASS/INSERT
It is often desirable to be able to quickly compare the
sound of the system with and without equalization.
That is, one would like to be able to, in effect, “remove”
the equalizer from the system and “reinsert” it at the
touch of a button. The BYPASS/INSERT Softkey
provides this function. The BYPASS function
temporarily sets all of the filters and the gain control to
0 dB (but doesn’t change the stored settings). Setting
the filters to 0 dB effectively removes the equalizer from
the system since no filtering is being performed. The
INSERT function restores the filters to their stored
settings.
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