Shure DFR11EQ User Guide

Shure

Main Menu

Brothers Incorporated 222 Hartrey A Evanston IL 60202-3696 U.S.A.

venue

Model DFR1

1EQ V

ersion 4 User Guide

DFR11EQ

Digital Feedback Reducer

with Windows Software Version 4 for Equalizer and Delay

avec logiciel Windows version 4 pour égaliseur et délai

mit Windows Softwareversion 4 für Equalizer und Delay

Reductor digital de realimentación y ecualizador gráfico

con software Versión 4 compatible con Windows

con software Windows, versione 4, per equalizzatore

Réducteur de Larsen numérique

Digitale Rückkopplungsreduzier–Stufe

para ecualizador y retardo

Attenuatore di retroazione digitale



1997, Shure Brothers Inc.

27A8595 (QG)

e ritardo

Printed in U.S.A.

TABLE OF CONTENTS

Main Menu

WHAT’S INTRODUCTION 3

THE

VERSION

FEEDBACK EQUALIZER 19

DELAY 25 OUTPUT

NEW IN VERSION 4 SOFTW

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Features 3 Added

DFR1

Overview 4 DFR11EQ Theory 6. Setup Audio

Introduction 12 Overview 15

Graphic Parametric

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IN/OUT Reversing

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Features When Interfaced with a Personal Computer3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1EQ 4.

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for Feedback Control8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connections

4 SOFTW

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REDUCER

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Equalizer

CONTROLS

Meters and Output Control

the Signal Polarity

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ARE 12.

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ARE 2.

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28.

RESPONSE

Response Snapshots 30

SHURE MAINTENANCE 32

Scenes 32 Customizing Exiting Printing

APPENDIX APPENDIX APPENDIX APPENDIX

GRAPH

Curves

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LINK NETWORKS

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the DFR1

DFR1

A. SPECIFICA B. RACK MOUNTING THE DFR1 C. CONNECT D. KEYBOARD CONTROLS

Trademark

registered trademark of Microsoft Corporation. Crystal is a trademark of Crystal Semiconductor Corporation. the

IBM Corporation.

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Graph Colors

1EQ Application

1EQ Settings

Motorola is a registered trademark of Motorola, Inc. IBM is a registered trademark of

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TIONS 35.

ORS AND CABLES

Notifications:

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1EQ 37.

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Shure is a registered

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trademark of Shure Brothers, Inc. Windows is a

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WHAT’S NEW IN VERSION 4 SOFTWARE...

Main Menu

Software

ersion 4 for the DFR1

1EQ of

fers the same features as before,

plus much more...

Switchable Graphic or Parametric Equalization...

graphic situations arise. Use the graphic equalizer to equalize overall room sound; or use the parametric equalizer up

Editable Digital Feedback Filters...

feedback

Digital

in fill systems. The delay can improve the audio quality of a sound system by delaying the audio signal to the remote loudspeaker until it is in alignment with the sound waves coming from other loudspeakers

More Scenes...

DFR11EQ.INI separate Scene

equalizer or as a parametric equalizer

to control the major feedback frequencies covered by the feedback filters, so you can free

all the feedback filters to act as dynamic filters for stray feedback.

filters, so the feedback filters can be utilized as additional parametric filters.

Delay

...

For use in larger sound systems which utilize widely spaced loudspeakers, such

in front. Phase cancellation and sound localization problems are minimized.

Unlike the Version 3 software, which is limited to 16 scenes stored in the

file on the computer

files. There is now a field for entering descriptions of scenes which appears in the Recall

function, so you can find the desired scene before loading.

, the V

. This flexibility can help

You can edit the frequency, depth, and width of individual

ersion 4 software can

Hold Mode Automatically Restores the Basic Feedback Filter Setup...

room, just flip the Update/Hold DIP switch to the Hold position. In Hold mode, a DFR11EQ may change you power up the unit. This is useful for storing the best filter settings for a given system — that system can then be set in Update mode for a different program, then returned to Hold mode to restore

Dynamic filters or deepen Fixed filters, but the original settings will be restored the next time

the usual settings.

Now, you can set the equalizer to work as a

meet your needs as dif

store any number of scenes each in

Once you ring out a

ferent

Reverse

inverts the polarity of the audio signal, use the Version 4 software to provide the correct signal polarity.

DFR11EQ

you

Input

you see There response

Undo... Response Graph Snapshots...

response see

Advanced

ID, Device

Window

can you hide the Response Graph to leave room on the screen to view other applications you may be running.

the Output Signal Polarity

Setting Printouts...

can now printout a hardcopy which shows all of the settings for a selected DFR1

and Output Level Meters and Output Control...

can see the ef if the equalized output sound levels are getting too low compared

is now a output control you can use to raise the output level to compensate.

curve graph will adjust with the

It is now possible to undo the most immediate filter deletions.

curve.

the dif

ference between the old response and the new

fect of the signal processing on the audio signal. Y

As you make changes in the filters or equalization, you can show the snapshot to

Shure Link Networking Options...

to make it easier to remember the Devices in a system. The new networking menu identifies the

ID, name, scene, modified status of that scene, and Device type.

Hiding...

now independently hide the Equalizer panel and the Response Graph panel. For instance, if want to set the graphic equalizer

If you want to use the software but need to conserve space on the screen, you

...

If there is a piece of equipment in the sound system which

These are useful for documenting a sound system.

There are now input and output meters, so

ou can check these meters to

to the unaf

output level slider

When you take a snapshot, the computer stores the frequency

ou can assign an individual name to each Device

, but have no current need

, showing you the current operating level.

to see the Response Graph, you can

With this option,

1EQ.

fected input levels.

The frequency

Backwards

Upgradeability

...

Using software V

ersion 4, earlier DFR1

1EQs can be upgraded.

INTRODUCTION

Main Menu

The Shure Model DFR11EQ is a single channel signal processor that combines a feedback reducer, in a sound reinforcement signal path to automatically detect and control acoustical feedback and equalize overall sound system response. The DFR11EQ is designed for installed sound reinforcement DFR11EQ is also an effective setup tool for controlling major feedback modes in live music applications.

feedback frequencies. These notch filters stop a sound system from feeding back, but are narrow enough so their effect on audio quality is minimized. The feedback detection algorithm constantly searches for feedback, with or without the presence of program audio. The feedback reducer functions

equalizer

The feedback reducer of the DFR11EQ automatically inserts narrow notch filters at detected

on its own or under external computer control.

The equalizer of the DFR1

, and delay in a single, half-rack enclosure. The DFR1

applications: theater

1EQ is designed

, conference

1EQ can be set to act as either a graphic or parametric equalizer

rooms, meeting halls, houses of worship, etc. The

to be placed

Hardware



Adaptive

which automatically detects feedback and deploys

up to 10 narrow band notch filters.



Crystal* 20-bit A/D and D/A converters

(Analog-to-Digital, Digital-to-Analog) for 104 dB

dynamic range.



48 kHz sampling rate for flat response to 20 kHz.



one or two units in a single rack space with no

sagging or bending.



Shure Link Interface allows multiple units to be

programmed with a single computer



No internal batteries. Settings and DSP program

stored in internal EEPROM.



Electronically balanced input with combination

balanced or unbalanced outputs.

Software



A tamper

between 30–band graphic or 10–band parametric.



The graphic equalizer is constant-Q, 30-band,

dB or cut 12 dB for each band.



The parametric equalizer offers 10 filters with adjustable frequency, up to 6 dB of boost or –18

dB of cut, and up to a two octave bandwidth.

Features

Notch Filter algorithm (patent pending)

rack space chassis allows rack mounting of

-in. and XLR connector

. Can be used with

Features

-proof equalizer which can be switched

-octave graphic equalizer.

Can boost up to 6



Independently driven, cross-coupled, balanced

-in. and XLR outputs. Can be used with

balanced or unbalanced inputs, without signal

loss.



+4 dBu/–10 dBV DIP-switch-selectable input and

output levels.



80 MHz Motorola* DSP56009 processor engine with full 24-bit internal processing.



RS-232 interface for external computer control and firmware updates.



Internal linear power supply switchable between 120 and 240 V

cumbersome external power supply



Solid state bypass eliminates unreliable mechanical relays and switches.



Up to 100 ms Digital Delay



Front/back panel lockout control.



Response Curve V

response of the feedback reducer

both.



Storage of multiple scenes to floppy or hard disk.

ac eliminates the need for a

iewing. Displays frequency

, equalizer

, or

THE DFR11EQ

Main Menu

Overview

Front Panel

     

BYPASS Button and LED. Press this button to

suspend filters from the audio path. Does not affect the graphic feedback

feedback reducer operation and remove

equalizer. When the LED illuminates, the

reducer is bypassed.

 SIGNAL LED. Illuminates when input signal is

present.

Intensity varies with input signal level.

 CLIP LED. Illuminates when the input signal is

6 dB of clipping.

within

 CLEAR Filters Button and LED. Press this

recessed button to reset all the feedback filters.

filters even if Lock Filters is enabled. LED

Clears illuminates

Back Panel

as the button is pressed.

 LOCK

Filters Button and LED.

lock the filters at their current values. When the LED is on, the unit will not change or add any feedback

filters.

Press this button

 FILTERS LEDs (10). Indicate when individual

feedback or

is added, the LED flashes, then stays on.

filters are active. When a filter changes

 NEW LED. Flashes in unison with the feedback

filter LEDs when the detector is deploying a new feedback filter or changing an existing one. Also flickers from

whenever the unit is receiving commands

a connected computer

 POWER Switch and LED. Press this button to

turn the power on. LED illuminates when unit is powered on. When the power is off, the unit is bypassed

automatically.

Power

to AC power. The fuse is located in the drawer below

 9-Pin RS-232 Port. Connects the unit to a

computer. For use with DFR11EQ software and for

 Shure Link Interface. Allows linking of up to 16

DFR11EQs

 DIP  Output Connector—

Connector

the connector.

DSP firmware upgrades.

which may be accessed by computer

Switches.

with Integral Fuse.

See

DIP Switches

/4-Inch & XLR. Active,

Connects



cross-coupled, balanced between +4 dBu/–10 dBV line-level operation by DIP switch. independently and either can be balanced or unbalanced

balanced outputs can be used with

or unbalanced inputs.

/4-Inch and XLR are driven

without af

fecting the other

Can be switched

 Input Connector—Combined XLR and

/4-Inch.

balanced between +4 dBu/–10 dBV line-level operation by DIP

Active balanced input can be used with

or unbalanced outputs. Can be switched

switch.

DIP

Main Menu

Switches

The

DIP switches located on the rear panel are used for adapting the unit to the sound system

requirements.

DIP

SWITCH

1–4

8 unused — — 9

Switches 5 through 10 change other available options, see the table below

FUNCTION POSITION

UP DOWN

Device ID see below see below Feedback Filter Bandwidth Select

Determines

Feedback Filter Memory Mode

Front Panel Lockout

Disables the front panel controls, except the power switch. Protects current settings from tampering.

Output Sensitivity Input Sensitivity

the Q of the feedback

filter

High

1/10-octave

Feedback Filters re main narrow as they

deepens

Update

Stores changed

feedback

filter settings

power down

Unlock

Front panel buttons

operational

+4 dBu +4 dBu

1/10-octave

widenFeedback

widen

as they deepen

Discards changed

feedback

power down, but

holds original

settings

Front panel buttons

inactive

–10 dBV –10 dBV

Low Q

Filters

Hold

filter settings

Lock

Shure Link Device ID

When multiple DFR11EQ’s are linked, each one musty be assigned a unique Device ID, 0 through Device Device

SWITCH UP

SWITCH DOWN

15. DIP switches 1 through 4 on the rear panel are used to set the Device ID. T

ID,

align the switches according to the illustrations below

ID 15.

DEVICE

123

DEVICE ID 4

123

DEVICE ID 8

123

DEVICE ID 12

123

ID 0

DEVICE ID 1

123

DEVICE ID 5

123

DEVICE ID 9

123

DEVICE ID 13

123

. The unit comes factory preset to

DEVICE ID 2

123

DEVICE ID 6

123

DEVICE ID 10

123

DEVICE ID 14

123

DEVICE ID 3

123

DEVICE ID 7

123

DEVICE ID 1

123

DEVICE ID 15

123

o change the

DFR11EQ Theory

Main Menu

Feedback

high. Since no sound system (microphones, loudspeakers, room acoustics, etc.) has an absolutely flat frequency response, feedback will occur at specific frequencies before others; these are the frequencies with the most gain. If the gain at only these specific frequencies is lowered, then the system can operate with more overall gain before it feeds back, without a perceptible difference in tonal

discriminate detects gain in

3 dB increments (up to –18 dB) until the feedback stops.

the and installed

and DFR1

When

acoustical feedback occurs in a sound system, it

quality

At the heart of the DFR11EQ is a very powerful algorithm that can accurately and quickly

feedback, it smoothly inserts a –3 dB, 1/10-octave notch filter into the audio path to reduce the

at the frequency which is feeding back. If the feedback does not stop, the filter depth is increased

The

illustrations below demonstrate how

left shows a feedback loop, where the microphone picks up of

sends it back

in the sound system, senses that loop and filters out the excess gain on that frequency

AMPLIFIER

1EQ Operation

is because the gain of the system is too

. This is the operating principle of the DFR1

between feedback and non-feedback

the DFR11EQ works in a sound system. The system on

into the sound system. The system on the right shows how the DFR1

1EQ.

sounds (speech and music). When this algorithm

f axis sound from the loudspeaker

DFR11EQ

AMPLIFIER

1EQ, when

MIXER

After the DFR11EQ stops the feedback at one frequency, the sound system may start feeding back

at another frequency

the new frequency

DFR11EQ Limitations

The

DFR1

1EQ (or any other notch filter system) cannot entirely eliminate feedback in a sound system, 4 to 8 notch filters are set. This is because generally there are only a few dominant frequency response very well controlling these peaks. The user can expect a 6 to 9 dB improvement of gain-before-feedback of the frequencies have too much gain; instead of trying to notch out all of the frequencies, better results other changes must be made to the sound system such as different microphone or loudspeaker placement.

it can only help to reduce it. In a typical system, a point of diminishing returns is reached after

peaks above the response of the entire system (see diagram

will be obtained by lowering the gain of the system. If the system still has insuf

MICROPHONE

. In this case, the DFR1

. The DFR1

in a typical system. However

1EQ can insert a total of 10 notch filters to reduce feedback.

MIXER

1EQ inserts another notch filter into

below). The DFR1

, if the system has too much overall gain, then all

MICROPHONE

the audio path

1EQ works

ficient gain, then

FREQUENCY

RESPONSE OF AN UNEQUALIZED SOUND SYSTEM

Fixed and Dynamic Notch Filters

Main Menu

The

DFR1

1EQ can

filters

are factory preset as 5 fixed and 5 dynamic filters. The first filters to be set are fixed, then the remaining detected, the DFR1 frequency. as an existing dynamic or fixed filter, the existing filter will deepen. The number of fixed versus dynamic

that has fixed microphone and loudspeaker locations. In this type of system, the most dominant frequencies placement, and will not change appreciably. However, feedback can still occur, for instance, when someone’s fixed frequencies

several this experimentation

filters are set as dynamic. After all 10 notch filters are set and a new feedback frequency is

The fixed filters remain unchanged. However

filters can be adjusted via the DFR1

example of a system that would benefit from more fixed filters and fewer dynamic filters is one

of feedback are defined

hand or head approaches a microphone. A good setting for this type of system would be 7

filters for the non-changing feedback frequencies, and

caused by the talker

On the other hand, more dynamic than fixed filters would be appropriate in a system that has

non-stationary wireless microphones. Eight or even all 10 filters could be set to dynamic in

type of system to obtain maximum feedback protection. As every application is dif

control the notch filters as either

1EQ will remove the oldest set dynamic filter and re-deploy it at the new feedback

by the room dimensions and the microphone and loudspeaker

is recommended to get the best results from a given sound system.

High Q Filters vs. Low Q Filters

The

DFR1

1EQ of

is the default setting. A High Q filter’s width stays very narrow as the filter depth is increased. This attenuates the minimum amount of signal possible to ensure system stability, while maintaining excellent

effectively greater system stability than the High Q setting, but with slightly diminished sound quality. This setting the

sound quality

The Low Q setting maintains the filter’s shape as it is deepened, so the width of the filter

widens as the depth increases. Using this setting attenuates the signal more, producing a

is appropriate for systems such as a speech-only P

sound quality can be compromised a bit.

fers two selections for the shape of the 1/10-octave notch filters. The first, High

. This setting is appropriate for most applications.

dynamic

, if feedback occurs at the same frequency

1EQ’

s Windows interface.

A where stability is an absolute must, but

HIGH

fixed.

The DFR1

3 dynamic filters to catch the feedback

1EQ’

s 10 notch

ferent, some

Filter Locking

LOW Q

The

feedback filters When locked, new filters will not be deployed and existing filters will not be deepened, even if feedback is detected. The DFR11EQ’s algorithm is designed to accurately differentiate feedback from

non-feedback sounds such as speech. However, certain sounds which sound like feedback,

such

as high notes on a piano or synthesizer

You

may want to lock the feedback filters during a musical performance for artistic

guitar

players

removing

For most applications, locking the feedback filters is unnecessary. As a rule of thumb, if the application the

filters after ringing out the sound system.

like to play with feedback as part of their sound, so locking the filters keeps them from

any desired feedback.

will contain material which sounds similar to acoustic feedback, then it is

can be locked from the front panel of the unit or from the computer interface.

, may cause the algorithm to deploy an unwanted filter

reasons—many

prudent to lock

Setup for Feedback Control

Main Menu

The

DFR1

1EQ will operate stand-alone as a feedback reducer

personal

Computer Interface

“Insurance Policy” method. Each is valid for different situations. The “Ring Out” method is a preemptive measure in which the system gain is raised beyond the normal setting to deliberately make the system feed back. The DFR11EQ will then set its filters, and the system gain is then reduced slightly, and the system is stable and useable. This set-up method is primarily used for systems

filters not for systems which already have sufficient gain-before-feedback, but need protection from the occasional stray feedback which can occur due to non-stationary microphones or user-adjustable gain

Setup

computer running the supplied DFR1

for details.

There are two basic ways in which to set-up the DFR11EQ: The “Ring Out” method and the

which are operated near the feedback point and need an extra margin of stability

For the “Insurance Policy” method, the DFR11EQ is simply installed in the sound system, but

are not set prior to use.

expected to feed back, but if it does, the DFR11EQ is there to catch it. This set-up method is used

controls.

Connect the DFR1

Set the input and output level DIP switches to the appropriate settings for the sensitivities of the connected equipment.

The DFR1

1EQ in the desired signal path location. See

1EQ adds extra insurance against feedback: the system is

. However

1EQ software, additional options are available. See

, when connected to a

Audio Connections.

WARNING:

power of recommended that you avoid using this setting.

Set the system gain to minimum, and power up all of the equipment.

Slowly raise the gain of the system, and set the gain of each microphone to achieve the desired level.

The red CLIP LED should illuminate only on the highest signal peaks. If it illuminates more frequently level of the signal going into the DFR1

At this point it is highly recommended to equalize the sound system with the DFR1 built–in equalizer (see feedback reducer is more ef

Other equipment may potentially be damaged after DFR1

f if the DFR1

1EQ input is set to +4 and the output is set to –10. It is

, check to see that the input level switch is set properly. If it is, lower the

1EQ.

Computer Interface

fective on a well–equalized sound system.

) or an external equalizer

Ringing Out the System (“Ring Out” method only)

1. If

necessary, clear any notch filters in the DFR1

f the BYP

Slowly raise the gain of the signal going through the DFR1 the DFR1

Repeat step 2 until all fixed filters are set. (There are 5 fixed filters, unless changed by the user via the computer interface.)

Lower the gain by 3 to 6 dB to stabilize the sound system.

ASS and LOCK LEDs if they are not already of

1EQ will insert a filter deep enough to stop the feedback.

1EQ by pressing the CLEAR button. T

1EQ

1EQ’s

. The DFR1

1EQ. When feedback occurs,

1EQ’s

urn

Hold/Update

Main Menu

UPDATE

the

DFR1 powered on again, the feedback filters will be at exactly the same settings as when the unit was powered

HOLD

DFR11EQ immediately saves the feedback filters at the current settings. When the DFR11EQ is powered off, any changes made to the feedback filters after the switch was set will be forgotten. When powered on again, the feedback filter settings will be exactly the same as when the HOLD/UPDATE best

filter settings for a sound system.

o store filter settings in the HOLD memory:

position...

1EQ saves the feedback filters every time the unit is powered of

down.

position...

DIP switch was changed to the HOLD

Set the Hold/Update DIP switch to the Update position; Ring out the room until all fixed filters are set; Set the Hold/Update DIP switch to the Hold position; During the performance, the DFR1

ones; After the performance, turn the power of

state they were in before the performance.

When the HOLD/UPDA

1EQ will change dynamic filters and deepen fixed

TE DIP switch is

TE DIP switch is changed to the HOLD position, the

position. This feature is useful for storing the

f and back on; the DFR filters are restored to the

in the UPDA

TE position (default),

f. When the DFR1

1EQ is

Audio Connections

ССССССССССССС

Main Menu

The

DFR1

1EQ should be placed where an equalizer would be in a signal path — it should be

of the final pieces of equipment a sound signal passes through before going to a power amplifier.

signal processors (for

Other DFR11EQ along the signal path. However, dynamics processors such as compressor/limiters should

be placed after the DFR1

The following four diagrams show typical connections. Because of its utility and flexibility, the

DFR11EQ

can be connected in a large variety of different setups to benefit a sound system.

NOTE

: See Appendix C. for descriptions of all cable and connection wiring.

Between the Mixer Main Output and the Power Amplifier

The

DFR1

1EQ is most commonly placed between the main output of a mixer and the input of power the

amplifier

DFR1

. At the main output, the unit will af

1EQ as a feedback reducer and as an equalizer

example, delay or reverb ef

1EQ.

fect all input channels. This setup is ideal for using

LINE

DFR11EQ

fects devices) should be placed before the

one

LINE IN

POWER AMPLIFIER

LINE OUT

ÑÑÑ

MIXER

ÑÑÑ

At a Subgroup Insert

When

using a multiple bus mixer, the DFR1 The unit will af unaffected.

SUB SEND

SUB RETURN

fect only the channels associated with that

LINE

OUT

MAIN

LINE OUT

DFR11EQ

LOUDSPEAKER

1EQ can be connected to a single subgroup insert.

subgroup:

LINE

the other channels will remain

LINE IN

POWER AMPLIFIER

MIXER

LINE OUT

LOUDSPEAKER

Inserted in an Input Channel

Main Menu

only a single microphone is creating feedback problems, the DFR1 channel of

alone. This is especially useful for wireless microphones, because the constant movement

a performer may bring the microphone too close to the sound reinforcement loudspeakers.

CHANNEL 1 IN

CHANNEL 1

INSERT

LINE OUT

MAIN

LINE OUT

DFR11EQ

LINE IN

1EQ

can be inserted on that

LINE IN

POWER AMPLIFIER

MIXER

LINE OUT

WIRELESS RECEIVER

Inserted Between Mixer and Monitor

Since

monitor loudspeakers and microphones are usually in close proximity

connected to stabilize a monitor system. Place a DFR1 the monitor loudspeaker each

monitor send.

AUX 2

AUX 1

OUT

. For multiple monitor mixes, a DFR1

LINE

DFR11EQ

LINE OUT

DFR11EQ

LINE OUT

LOUDSPEAKER

, the DFR1

1EQ on the monitor output which goes to

1EQ should be placed at the output of

LINE IN

MONITOR

POWER AMPLIFIER

MONITOR

LOUDSPEAKERS

1EQ can

MIXER

VERSION 4 SOFTWARE

Main Menu

Introduction

This

section describes the V

you

to utilize the full features of the Shure DFR1 you can access additional control features to customize the operating characteristics of the feedback filters. The computer interface also allows access to the built-in digital equalizer, which can be configured in one of two ways: as a 30-band, 10-band response combined.

parametric equalizer

graph for an accurate

In addition, there is a

Minimum Computer Requirements

The

following are the minimum requirements to run the Shure DFR1



One 486DX 50 MHz IBM*-compatible computer (math coprocessor required)



2 MB hard drive space



4 MB RAM



Windows version 3.1x, or greater



1 available RS-232 serial (COM) port

 One RS-232 cable to connect the COM port of the computer to the DB-9

connector

of the DFR1

ersion 4 Windows-based computer interface software which allows

. The resulting equalization

display of either the feedback filter response, EQ response, or both digital delay which can add up to 100 ms of delay from input to output.

1EQ

1EQ. By connecting the DFR1

/3-octave, constant-Q, graphic equalizer, or as a

curves can be displayed in the frequency

1EQ to your computer

1EQ software.

Connecting

the DFR1

Before connecting the DFR11EQ to the computer, determine whether the computer’s RS-232 (COM) port is 9-pin or 25-pin. Use the proper cable (purchased separately). For RS-232 cable diagrams,

see

Appendix C. Cables and Connectors.

1. Connect

Connect the other end of the cable to the RS-232 port of the computer

the 9-pin plug (male) of the cable to the RS-232 port of the DFR1

Software Installation

1. Insert

the supplied 3.5-in floppy disk into the disk drive of your computer

With Windows Program Manager active, click on the click on

In the disk.

Shure Setup will suggest a destination on your hard disk for the DFR1 Setup will check the computer hardware to ensure that a coprocessor is present. Setup will also prompt you for your name and organizational information.

NOTE: Remember to register your software by filling out and mailing the enclosed registration card, or online via the Shure World Wide Web site (“http://www.shure.com”). This will ensure that you receive information about software

Run...

Run

window

updates with additional features as they become available.

1EQ to a Computer via the RS-232 (COM) Port

TO COMPUTER

RS-232 CONNECTOR

TO DFR11EQ

RS-232 CONNECTOR

(9-PIN MALE)

1EQ.

File

heading of the main menu, then

, type “a:\setup”, where “a” is the drive containing the Shure Setup

1EQ files. Shure

The Shure DFR11EQ Program Group

Main Menu

The DFR11EQ program group contains the main application icon, a Windows Help file, and a Readme file with up-to-date information. To launch the application, double-click on the DFR11EQ icon.

Configuring the Computer Serial Port

1. Launch

Click on

Click on the

the DFR1

Communications

1EQ software.

COM port

in the main menu bar

option of the drop-down menu.

Accessing

select the program

In the

Serial Port Options

Click on the OK button.

NOTE:

The COM port selection is saved in the DFR1

be selected again unless you need to change the hardware configuration.

the Connected DFR1

bring

the networked DFR1

Connect

searches for each

option of the

window

, select an available COM port on the computer

1EQ file, and will not need

1EQs

1EQ’

s online, click on the

Communications

unit connected in the network, reading the Shure Link Device ID of each.

drop-down menu of the main menu bar. The

CONNECT

button of the DFR panel. Or

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