Oxmoor DEQ-1 - Manual (Page 3)

Page 1
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 spac-
ings. 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
an IBM compatible, Macintosh, or another DEQ-II.
Once a PRESET has been set, it can be locked to pre-
vent 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 program-
mable 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 con-
trol device) or through the DEQ-I’s internal controls.
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 (INPUT-
male), (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.
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 dis-
play dedicated to displaying the Softkey labels and mes-
sages. This area also displays DEQ TITLE and PRESET
name information.
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 con-
trol of the audio.
ACTIVE FILTER BAND: The filter band which is cur-
rently addressed by the cursor and for which the slider
may be adjusted.
LOGGING ON: Term which describes the act of gain-
ing control of a DEQ-II through its front panel; accom-
plished 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.
DEQ-I & DEQ-II QUICK REFERENCE